feat: Audit log for system and project setting changes (OD-2142)

server-core/src/main/java/io/onedev/server/CoreModule.java

@@ -371,6 +371,7 @@ import io.onedev.server.util.oauth.OAuthTokenManager;
 import io.onedev.server.util.xstream.CollectionConverter;
 import io.onedev.server.util.xstream.HibernateProxyConverter;
 import io.onedev.server.util.xstream.MapConverter;
+import io.onedev.server.util.xstream.ObjectMapperConverter;
 import io.onedev.server.util.xstream.ReflectionConverter;
 import io.onedev.server.util.xstream.StringConverter;
 import io.onedev.server.util.xstream.VersionedDocumentConverter;
@@ -393,7 +394,6 @@ import io.onedev.server.web.editable.EditSupport;
 import io.onedev.server.web.editable.EditSupportLocator;
 import io.onedev.server.web.editable.EditSupportRegistry;
 import io.onedev.server.web.exceptionhandler.PageExpiredExceptionHandler;
-import io.onedev.server.web.page.layout.AdministrationMenuContribution;
 import io.onedev.server.web.page.layout.AdministrationSettingContribution;
 import io.onedev.server.web.page.project.blob.render.BlobRenderer;
 import io.onedev.server.web.page.project.setting.ProjectSettingContribution;
@@ -691,8 +691,6 @@ public class CoreModule extends AbstractPluginModule {
 		bind(UploadManager.class).to(DefaultUploadManager.class);
 		
 		bind(TaskButton.TaskFutureManager.class);
-		
-		contribute(AdministrationMenuContribution.class, (AdministrationMenuContribution) ArrayList::new);
 	}
 	
 	private void configureBuild() {
@@ -856,6 +854,7 @@ public class CoreModule extends AbstractPluginModule {
 				xstream.registerConverter(new HibernateProxyConverter(), XStream.PRIORITY_VERY_HIGH);
 				xstream.registerConverter(new CollectionConverter(xstream.getMapper()), XStream.PRIORITY_VERY_HIGH);
 				xstream.registerConverter(new MapConverter(xstream.getMapper()), XStream.PRIORITY_VERY_HIGH);
+				xstream.registerConverter(new ObjectMapperConverter(), XStream.PRIORITY_VERY_HIGH);
 				xstream.registerConverter(new ISO8601DateConverter(), XStream.PRIORITY_VERY_HIGH);
 				xstream.registerConverter(new ISO8601SqlTimestampConverter(), XStream.PRIORITY_VERY_HIGH); 
 				xstream.registerConverter(new ReflectionConverter(xstream.getMapper(), xstream.getReflectionProvider()), 

server-core/src/main/java/io/onedev/server/data/DefaultDataManager.java

@@ -99,6 +99,7 @@ import io.onedev.server.model.Setting.Key;
 import io.onedev.server.model.User;
 import io.onedev.server.model.support.administration.AgentSetting;
 import io.onedev.server.model.support.administration.AlertSetting;
+import io.onedev.server.model.support.administration.AuditSetting;
 import io.onedev.server.model.support.administration.BackupSetting;
 import io.onedev.server.model.support.administration.BrandingSetting;
 import io.onedev.server.model.support.administration.ClusterSetting;
@@ -897,6 +898,12 @@ public class DefaultDataManager implements DataManager, Serializable {
 			clusterSetting.setReplicaCount(1);
 			settingManager.saveClusterSetting(clusterSetting);
 		}
+
+		setting = settingManager.findSetting(Key.AUDIT);
+		if (setting == null) {
+			AuditSetting auditSetting = new AuditSetting();
+			settingManager.saveAuditSetting(auditSetting);
+		}
 		
 		if (roleManager.get(Role.OWNER_ID) == null) {
 			Role owner = new Role();

server-core/src/main/java/io/onedev/server/data/migration/DataMigrator.java

@@ -8129,4 +8129,7 @@ public class DataMigrator {
 		}		
 	}
 
+	private void migrate205(File dataDir, Stack<Integer> versions) {
+	}
+	
 }

server-core/src/main/java/io/onedev/server/entitymanager/AuditManager.java

@@ -0,0 +1,20 @@
+package io.onedev.server.entitymanager;
+
+import java.util.List;
+
+import javax.annotation.Nullable;
+
+import io.onedev.server.entitymanager.support.AuditQuery;
+import io.onedev.server.model.Audit;
+import io.onedev.server.model.Project;
+import io.onedev.server.persistence.dao.EntityManager;
+
+public interface AuditManager extends EntityManager<Audit> {
+		
+	void audit(@Nullable Project project, String action, @Nullable String oldContent, @Nullable String newContent);
+
+	List<Audit> query(@Nullable Project project, AuditQuery query, int firstResult, int maxResults);
+
+	int count(@Nullable Project project, AuditQuery query);
+	
+}

server-core/src/main/java/io/onedev/server/entitymanager/LinkAuthorizationManager.java

@@ -1,15 +1,16 @@
 package io.onedev.server.entitymanager;
 
+import java.util.Collection;
+
 import io.onedev.server.model.LinkAuthorization;
 import io.onedev.server.model.LinkSpec;
 import io.onedev.server.model.Role;
 import io.onedev.server.persistence.dao.EntityManager;
 
-import java.util.Collection;
-
 public interface LinkAuthorizationManager extends EntityManager<LinkAuthorization> {
 
 	void syncAuthorizations(Role role, Collection<LinkSpec> authorizedLinks);
 
     void create(LinkAuthorization authorization);
+
 }

server-core/src/main/java/io/onedev/server/entitymanager/ProjectManager.java

@@ -1,5 +1,20 @@
 package io.onedev.server.entitymanager;
 
+import java.io.File;
+import java.util.Collection;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.Future;
+import java.util.function.Consumer;
+
+import javax.annotation.Nullable;
+import javax.persistence.criteria.CriteriaBuilder;
+import javax.persistence.criteria.Path;
+import javax.persistence.criteria.Predicate;
+
+import org.eclipse.jgit.lib.ObjectId;
+import org.eclipse.jgit.lib.Repository;
+
 import io.onedev.server.cluster.ClusterTask;
 import io.onedev.server.model.Project;
 import io.onedev.server.model.support.code.GitPackConfig;
@@ -11,19 +26,6 @@ import io.onedev.server.util.criteria.Criteria;
 import io.onedev.server.util.facade.ProjectCache;
 import io.onedev.server.util.facade.ProjectFacade;
 import io.onedev.server.util.patternset.PatternSet;
-import org.eclipse.jgit.lib.ObjectId;
-import org.eclipse.jgit.lib.Repository;
-
-import javax.annotation.Nullable;
-import javax.persistence.criteria.CriteriaBuilder;
-import javax.persistence.criteria.Path;
-import javax.persistence.criteria.Predicate;
-import java.io.File;
-import java.util.Collection;
-import java.util.List;
-import java.util.Map;
-import java.util.concurrent.Future;
-import java.util.function.Consumer;
 
 public interface ProjectManager extends EntityManager<Project> {
 

server-core/src/main/java/io/onedev/server/entitymanager/RoleManager.java

@@ -15,9 +15,9 @@ public interface RoleManager extends EntityManager<Role> {
 	
 	void replicate(Role role);
 	
-	void create(Role role, Collection<LinkSpec> authorizedLinks);
+	void create(Role role, @Nullable Collection<LinkSpec> authorizedLinks);
 	
-	void update(Role role, Collection<LinkSpec> authorizedLinks, @Nullable String oldName);
+	void update(Role role, @Nullable Collection<LinkSpec> authorizedLinks, @Nullable String oldName);
 	
 	@Nullable
 	Role find(String name);

server-core/src/main/java/io/onedev/server/entitymanager/SettingManager.java

@@ -83,6 +83,10 @@ public interface SettingManager extends EntityManager<Setting> {
 	ClusterSetting getClusterSetting();
 
 	void saveClusterSetting(ClusterSetting clusterSetting);
+
+	AuditSetting getAuditSetting();
+
+	void saveAuditSetting(AuditSetting auditSetting);
 	
 	SecuritySetting getSecuritySetting();
 	

server-core/src/main/java/io/onedev/server/entitymanager/impl/DefaultAccessTokenManager.java

@@ -29,7 +29,6 @@ import io.onedev.server.persistence.dao.BaseEntityManager;
 import io.onedev.server.persistence.dao.Dao;
 import io.onedev.server.util.CryptoUtils;
 import io.onedev.server.util.facade.AccessTokenCache;
-import io.onedev.server.util.facade.AccessTokenFacade;
 
 @Singleton
 public class DefaultAccessTokenManager extends BaseEntityManager<AccessToken> implements AccessTokenManager {
@@ -134,7 +133,7 @@ public class DefaultAccessTokenManager extends BaseEntityManager<AccessToken> im
 	@Listen
 	public void on(EntityPersisted event) {
 		if (event.getEntity() instanceof AccessToken) {
-			var facade = (AccessTokenFacade) event.getEntity().getFacade();
+			var facade = ((AccessToken) event.getEntity()).getFacade();
 			transactionManager.runAfterCommit(() -> cache.put(facade.getId(), facade));
 		}
 	}

server-core/src/main/java/io/onedev/server/entitymanager/impl/DefaultGroupManager.java

@@ -190,7 +190,7 @@ public class DefaultGroupManager extends BaseEntityManager<Group> implements Gro
 	@Listen
 	public void on(EntityPersisted event) {
 		if (event.getEntity() instanceof Group) {
-			var facade = (GroupFacade) event.getEntity().getFacade();
+			var facade = ((Group) event.getEntity()).getFacade();
 			transactionManager.runAfterCommit(() -> cache.put(facade.getId(), facade));
 		}
 	}

server-core/src/main/java/io/onedev/server/entitymanager/impl/DefaultIssueManager.java

@@ -1093,7 +1093,6 @@ public class DefaultIssueManager extends BaseEntityManager<Issue> implements Iss
 			Project oldProject = issue.getProject();
 			Project numberScope = targetProject.getForkRoot();
 			Long nextNumber = getNextNumber(numberScope);
-			issue.setOldVersion(issue.getFacade());
 			issue.setProject(targetProject);
 			issue.setNumberScope(numberScope);
 			Long oldNumber = issue.getNumber();

server-core/src/main/java/io/onedev/server/entitymanager/impl/DefaultLinkAuthorizationManager.java

@@ -6,6 +6,7 @@ import javax.inject.Inject;
 import javax.inject.Singleton;
 
 import com.google.common.base.Preconditions;
+
 import io.onedev.server.entitymanager.LinkAuthorizationManager;
 import io.onedev.server.model.LinkAuthorization;
 import io.onedev.server.model.LinkSpec;

server-core/src/main/java/io/onedev/server/entitymanager/impl/DefaultLinkSpecManager.java

@@ -164,7 +164,7 @@ public class DefaultLinkSpecManager extends BaseEntityManager<LinkSpec> implemen
 	@Listen
 	public void on(EntityPersisted event) {
 		if (event.getEntity() instanceof LinkSpec) {
-			var facade = (LinkSpecFacade) event.getEntity().getFacade();
+			var facade = ((LinkSpec) event.getEntity()).getFacade();
 			transactionManager.runAfterCommit(() -> updateCache(facade));
 		}
 	}
@@ -173,7 +173,7 @@ public class DefaultLinkSpecManager extends BaseEntityManager<LinkSpec> implemen
 	@Listen
 	public void on(EntityRemoved event) {
 		if (event.getEntity() instanceof LinkSpec) {
-			var facade = (LinkSpecFacade) event.getEntity().getFacade();
+			var facade = ((LinkSpec) event.getEntity()).getFacade();
 			transactionManager.runAfterCommit(() -> {
 				cache.remove(facade.getId());
 				idCache.remove(facade.getName());

server-core/src/main/java/io/onedev/server/entitymanager/impl/DefaultProjectManager.java

@@ -117,6 +117,8 @@ import io.onedev.server.StorageManager;
 import io.onedev.server.attachment.AttachmentManager;
 import io.onedev.server.cluster.ClusterManager;
 import io.onedev.server.cluster.ClusterTask;
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.entitymanager.BuildManager;
 import io.onedev.server.entitymanager.IssueManager;
 import io.onedev.server.entitymanager.LinkSpecManager;
@@ -256,6 +258,8 @@ public class DefaultProjectManager extends BaseEntityManager<Project>
 	private final PackBlobManager packBlobManager;
 	
 	private final ProjectLabelManager labelManager;
+
+	private final AuditManager auditManager;
 	
 	private final Collection<String> reservedNames = Sets.newHashSet("robots.txt", "sitemap.xml", "sitemap.txt",
 			"favicon.ico", "favicon.png", "logo.png", "wicket", "projects");
@@ -282,7 +286,8 @@ public class DefaultProjectManager extends BaseEntityManager<Project>
 								 AttachmentManager attachmentManager, BatchWorkManager batchWorkManager,
 								 VisitInfoManager visitInfoManager, StorageManager storageManager,
 								 PackManager packManager, PackBlobManager packBlobManager, 
-								 ProjectLabelManager labelManager, Set<ProjectNameReservation> nameReservations) {
+								 ProjectLabelManager labelManager, AuditManager auditManager, 
+								 Set<ProjectNameReservation> nameReservations) {
 		super(dao);
 
 		this.commitInfoManager = commitInfoManager;
@@ -308,6 +313,7 @@ public class DefaultProjectManager extends BaseEntityManager<Project>
 		this.packManager = packManager;
 		this.packBlobManager = packBlobManager;
 		this.labelManager = labelManager;
+		this.auditManager = auditManager;
 
 		for (ProjectNameReservation reservation : nameReservations)
 			reservedNames.addAll(reservation.getReserved());
@@ -369,8 +375,10 @@ public class DefaultProjectManager extends BaseEntityManager<Project>
 	public void create(Project project) {
 		Preconditions.checkState(project.isNew());
 		Project parent = project.getParent();
-		if (parent != null && parent.isNew())
+		if (parent != null && parent.isNew()) {
 			create(parent);
+			auditManager.audit(parent, "created project", null, VersionedXmlDoc.fromBean(parent).toXML());
+		}
 		project.setPath(project.calcPath());
 
 		ProjectLastEventDate lastEventDate = new ProjectLastEventDate();
@@ -440,17 +448,7 @@ public class DefaultProjectManager extends BaseEntityManager<Project>
 	@Transactional
 	@Override
 	public void delete(Collection<Project> projects) {
-		Collection<Project> independents = new HashSet<>(projects);
-		for (Iterator<Project> it = independents.iterator(); it.hasNext(); ) {
-			Project independent = it.next();
-			for (Project each : independents) {
-				if (!each.equals(independent) && each.isSelfOrAncestorOf(independent)) {
-					it.remove();
-					break;
-				}
-			}
-		}
-		for (Project independent : independents)
+		for (Project independent : Project.getIndependents(projects))
 			delete(independent);
 	}
 

server-core/src/main/java/io/onedev/server/entitymanager/impl/DefaultRoleManager.java

@@ -112,7 +112,9 @@ public class DefaultRoleManager extends BaseEntityManager<Role> implements RoleM
 	public void create(Role role, Collection<LinkSpec> authorizedLinks) {
 		Preconditions.checkState(role.isNew());
 		dao.persist(role);
-		linkAuthorizationManager.syncAuthorizations(role, authorizedLinks);
+
+		if (authorizedLinks != null)
+			linkAuthorizationManager.syncAuthorizations(role, authorizedLinks);
 	}
 
 	@Transactional
@@ -122,9 +124,10 @@ public class DefaultRoleManager extends BaseEntityManager<Role> implements RoleM
 		
 		if (oldName != null && !oldName.equals(role.getName())) 
 			settingManager.onRenameRole(oldName, role.getName());
-		dao.persist(role);
-		
-		linkAuthorizationManager.syncAuthorizations(role, authorizedLinks);
+		dao.persist(role);		
+
+		if (authorizedLinks != null)
+			linkAuthorizationManager.syncAuthorizations(role, authorizedLinks);
 	}
 
 	@Transactional
@@ -343,7 +346,7 @@ public class DefaultRoleManager extends BaseEntityManager<Role> implements RoleM
 	@Listen
 	public void on(EntityPersisted event) {
 		if (event.getEntity() instanceof Role) {
-			var facade = (RoleFacade) event.getEntity().getFacade();
+			var facade = ((Role) event.getEntity()).getFacade();
 			transactionManager.runAfterCommit(() -> cache.put(facade.getId(), facade));
 		}
 	}

server-core/src/main/java/io/onedev/server/entitymanager/impl/DefaultSettingManager.java

@@ -131,6 +131,11 @@ public class DefaultSettingManager extends BaseEntityManager<Setting>
 		return (ClusterSetting) getSettingValue(Key.CLUSTER_SETTING);
 	}
 
+	@Override
+	public AuditSetting getAuditSetting() {
+		return (AuditSetting) getSettingValue(Key.AUDIT);
+	}
+
 	@Override
 	public SecuritySetting getSecuritySetting() {
 		return (SecuritySetting) getSettingValue(Key.SECURITY);
@@ -260,6 +265,12 @@ public class DefaultSettingManager extends BaseEntityManager<Setting>
 	public void saveClusterSetting(ClusterSetting clusterSetting) {
 		saveSetting(Key.CLUSTER_SETTING, clusterSetting);
 	}
+
+	@Transactional
+	@Override
+	public void saveAuditSetting(AuditSetting auditSetting) {
+		saveSetting(Key.AUDIT, auditSetting);
+	}
 	
 	@Transactional
 	@Override

server-core/src/main/java/io/onedev/server/entitymanager/impl/DefaultSshKeyManager.java

@@ -54,7 +54,7 @@ public class DefaultSshKeyManager extends BaseEntityManager<SshKey> implements S
 	        sshKey.setContent(content);
 	        sshKey.setOwner(user);
 	        sshKey.setCreatedAt(new Date());
-	        sshKey.fingerprint();
+	        sshKey.generateFingerprint();
 	        syncMap.put(content, sshKey);
     	}
 

server-core/src/main/java/io/onedev/server/entitymanager/impl/DefaultUserManager.java

@@ -502,7 +502,7 @@ public class DefaultUserManager extends BaseEntityManager<User> implements UserM
 	public void on(EntityPersisted event) {
 		// Cache will be null when we run reset-admin-password command
 		if (cache != null && event.getEntity() instanceof User) {
-			var facade = (UserFacade) event.getEntity().getFacade();
+			var facade = ((User) event.getEntity()).getFacade();
 			if (facade.getId() > 0)
 				transactionManager.runAfterCommit(() -> cache.put(facade.getId(), facade));
 		}

server-core/src/main/java/io/onedev/server/entitymanager/support/AuditQuery.java

@@ -0,0 +1,47 @@
+package io.onedev.server.entitymanager.support;
+
+import java.io.Serializable;
+import java.util.Date;
+import java.util.List;
+
+import javax.annotation.Nullable;
+
+import io.onedev.server.model.User;
+
+public class AuditQuery implements Serializable {
+    
+    private final List<User> users;
+
+    private final Date sinceDate;
+
+    private final Date untilDate;
+
+    private final String action;
+
+    public AuditQuery(List<User> users, @Nullable Date sinceDate, @Nullable Date untilDate, @Nullable String action) {
+        this.users = users;
+        this.sinceDate = sinceDate;
+        this.untilDate = untilDate;
+        this.action = action;
+    }
+
+    public List<User> getUsers() {
+        return users;
+    }
+
+    @Nullable
+    public Date getSinceDate() {
+        return sinceDate;
+    }
+
+    @Nullable
+    public Date getUntilDate() {
+        return untilDate;
+    }
+
+    @Nullable
+    public String getAction() {
+        return action;
+    }
+
+}

server-core/src/main/java/io/onedev/server/model/AbstractEntity.java

@@ -1,24 +1,27 @@
 package io.onedev.server.model;
 
-import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
-import com.fasterxml.jackson.annotation.JsonProperty;
-import io.onedev.server.model.support.EntityWatch;
-import io.onedev.server.rest.annotation.Api;
-import io.onedev.server.util.facade.EntityFacade;
-import org.apache.commons.lang3.builder.EqualsBuilder;
-import org.apache.commons.lang3.builder.HashCodeBuilder;
-import org.hibernate.annotations.GenericGenerator;
-import org.hibernate.proxy.HibernateProxy;
+import static com.fasterxml.jackson.annotation.JsonProperty.Access.READ_ONLY;
+
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.Collection;
 
 import javax.annotation.Nullable;
 import javax.persistence.GeneratedValue;
 import javax.persistence.Id;
 import javax.persistence.MappedSuperclass;
-import java.io.Serializable;
-import java.util.ArrayList;
-import java.util.Collection;
 
-import static com.fasterxml.jackson.annotation.JsonProperty.Access.READ_ONLY;
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import org.hibernate.annotations.GenericGenerator;
+import org.hibernate.proxy.HibernateProxy;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.model.support.EntityWatch;
+import io.onedev.server.rest.annotation.Api;
 
 @MappedSuperclass
 @JsonIgnoreProperties("handler")
@@ -36,7 +39,7 @@ public abstract class AbstractEntity implements Serializable, Comparable<Abstrac
 	
 	public static final String PROP_NUMBER = "number";
 	
-	private transient EntityFacade oldVersion;
+	private transient VersionedXmlDoc oldVersion;
 	
 	@Api(order=1)
 	@Id
@@ -117,11 +120,11 @@ public abstract class AbstractEntity implements Serializable, Comparable<Abstrac
 	}
 
 	@Nullable
-	public EntityFacade getOldVersion() {
+	public VersionedXmlDoc getOldVersion() {
 		return oldVersion;
 	}
 
-	public void setOldVersion(@Nullable EntityFacade oldVersion) {
+	public void setOldVersion(VersionedXmlDoc oldVersion) {
 		this.oldVersion = oldVersion;
 	}
 
@@ -146,10 +149,5 @@ public abstract class AbstractEntity implements Serializable, Comparable<Abstrac
 			return entity.getId();
 		}
 	}
-	
-	@Nullable
-	public EntityFacade getFacade() {
-		return null;
-	}
-	
+		
 }

server-core/src/main/java/io/onedev/server/model/AccessToken.java

@@ -122,7 +122,6 @@ public class AccessToken extends AbstractEntity implements AuthenticationInfo {
 			return SecurityUtils.asSubject(getPrincipals());
 	}
 
-	@Override
 	public AccessTokenFacade getFacade() {
 		return new AccessTokenFacade(getId(), getOwner().getId(), getName(), getValue(), getExpireDate());
 	}

server-core/src/main/java/io/onedev/server/model/AccessTokenAuthorization.java

@@ -1,9 +1,17 @@
 package io.onedev.server.model;
 
+import javax.persistence.Entity;
+import javax.persistence.FetchType;
+import javax.persistence.Index;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+import javax.persistence.Table;
+import javax.persistence.UniqueConstraint;
+
 import org.hibernate.annotations.Cache;
 import org.hibernate.annotations.CacheConcurrencyStrategy;
 
-import javax.persistence.*;
+import io.onedev.server.rest.annotation.Immutable;
 
 @Entity
 @Table(
@@ -21,6 +29,7 @@ public class AccessTokenAuthorization extends AbstractEntity {
 	
 	@ManyToOne(fetch=FetchType.LAZY)
 	@JoinColumn(nullable=false)
+	@Immutable
 	private AccessToken token;
 
 	@ManyToOne(fetch=FetchType.LAZY)
@@ -50,5 +59,5 @@ public class AccessTokenAuthorization extends AbstractEntity {
 	public void setRole(Role role) {
 		this.role = role;
 	}
-	
+		
 }

server-core/src/main/java/io/onedev/server/model/Audit.java

@@ -0,0 +1,116 @@
+package io.onedev.server.model;
+
+import static io.onedev.server.model.Audit.PROP_ACTION;
+import static io.onedev.server.model.Audit.PROP_DATE;
+
+import java.util.Date;
+
+import javax.annotation.Nullable;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.FetchType;
+import javax.persistence.Index;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+import javax.persistence.Table;
+
+@Entity
+@Table(
+		indexes={
+				@Index(columnList="o_project_id"), @Index(columnList= "o_user_id"),  
+				@Index(columnList= PROP_DATE), @Index(columnList= PROP_ACTION)}
+)
+public class Audit extends AbstractEntity { 
+
+	private static final long serialVersionUID = 1L;
+	
+	private static final int MAX_ACTION_LEN = 512;
+
+	private static final int MAX_CONTENT_LEN = 1048576;
+		
+	public static final String PROP_PROJECT = "project";
+
+	public static final String PROP_USER = "user";
+
+	public static final String PROP_ACTION = "action";
+	
+	public static final String PROP_DATE = "date";
+		
+	@ManyToOne(fetch=FetchType.LAZY)
+	@JoinColumn
+	private Project project;
+
+	@ManyToOne(fetch=FetchType.LAZY)
+	@JoinColumn(nullable=false)
+	private User user;
+	
+	@Column(nullable=false, length=MAX_ACTION_LEN)
+	private String action;
+
+	@Column(nullable = false)
+	private Date date = new Date();
+
+	@Column(length=MAX_CONTENT_LEN)
+	private String oldContent;
+
+	@Column(length=MAX_CONTENT_LEN)
+	private String newContent;
+	
+	@Nullable
+	public Project getProject() {
+		return project;
+	}
+
+	public void setProject(@Nullable Project project) {
+		this.project = project;
+	}
+	
+	public User getUser() {
+		return user;
+	}
+
+	public void setUser(@Nullable User user) {
+		this.user = user;
+	}
+
+	public Date getDate() {
+		return date;
+	}
+
+	public void setDate(Date date) {
+		this.date = date;
+	}
+
+	public String getAction() {
+		return action;
+	}
+
+	public void setAction(String action) {
+		if (action.length() > MAX_ACTION_LEN)
+			throw new IllegalArgumentException("Audit action is too long: " + action);
+		this.action = action;
+	}
+	
+	@Nullable
+	public String getOldContent() {
+		return oldContent;
+	}
+
+	public void setOldContent(@Nullable String oldContent) {
+		if (oldContent != null && oldContent.length() > MAX_CONTENT_LEN)
+			throw new IllegalArgumentException("Audit content is too long: " + oldContent);
+		this.oldContent = oldContent;
+	}
+	
+	@Nullable
+	public String getNewContent() {
+		return newContent;
+	}
+
+	public void setNewContent(@Nullable String newContent) {
+		if (newContent != null && newContent.length() > MAX_CONTENT_LEN)
+			throw new IllegalArgumentException("Audit content is too long: " + newContent);
+		this.newContent = newContent;
+	}
+	
+}

server-core/src/main/java/io/onedev/server/model/BaseAuthorization.java

@@ -11,6 +11,8 @@ import javax.persistence.UniqueConstraint;
 import org.hibernate.annotations.Cache;
 import org.hibernate.annotations.CacheConcurrencyStrategy;
 
+import io.onedev.server.rest.annotation.Immutable;
+
 @Entity
 @Table(
 		indexes={@Index(columnList="o_project_id"), @Index(columnList="o_role_id")},
@@ -27,6 +29,7 @@ public class BaseAuthorization extends AbstractEntity {
 
 	@ManyToOne(fetch=FetchType.LAZY)
 	@JoinColumn(nullable=false)
+	@Immutable
 	private Project project;
 		
 	@ManyToOne(fetch=FetchType.LAZY)

server-core/src/main/java/io/onedev/server/model/Build.java

@@ -896,7 +896,6 @@ public class Build extends ProjectBelonging
 		return commitsCache.get(sincePrevStatus);
 	}
 	
-	@Override
 	public BuildFacade getFacade() {
 		return new BuildFacade(getId(), getProject().getId(), getNumber(), getCommitHash());
 	}

server-core/src/main/java/io/onedev/server/model/EmailAddress.java

@@ -103,7 +103,6 @@ public class EmailAddress extends AbstractEntity {
     	return getVerificationCode() == null;
     }
 
-	@Override
 	public EmailAddressFacade getFacade() {
 		return new EmailAddressFacade(getId(), getOwner().getId(), getValue(), 
 				isPrimary(), isGit(), isOpen(), getVerificationCode());

server-core/src/main/java/io/onedev/server/model/GpgKey.java

@@ -15,8 +15,9 @@ import org.hibernate.annotations.CacheConcurrencyStrategy;
 
 import com.fasterxml.jackson.annotation.JsonIgnore;
 
-import io.onedev.server.model.support.BaseGpgKey;
 import io.onedev.server.annotation.Editable;
+import io.onedev.server.model.support.BaseGpgKey;
+import io.onedev.server.rest.annotation.Immutable;
 
 @Editable
 @Entity
@@ -38,6 +39,7 @@ public class GpgKey extends BaseGpgKey {
     
     @ManyToOne(fetch=FetchType.LAZY)
     @JoinColumn(nullable=false)
+    @Immutable
     private User owner;
     
     public long getKeyId() {

server-core/src/main/java/io/onedev/server/model/Group.java

@@ -1,5 +1,20 @@
 package io.onedev.server.model;
 
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashSet;
+
+import javax.persistence.CascadeType;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.OneToMany;
+import javax.validation.constraints.NotEmpty;
+
+import org.apache.shiro.authz.Permission;
+import org.hibernate.annotations.Cache;
+import org.hibernate.annotations.CacheConcurrencyStrategy;
+import org.jetbrains.annotations.Nullable;
+
 import io.onedev.server.annotation.Editable;
 import io.onedev.server.annotation.ShowCondition;
 import io.onedev.server.security.permission.BasePermission;
@@ -9,19 +24,6 @@ import io.onedev.server.security.permission.SystemAdministration;
 import io.onedev.server.util.EditContext;
 import io.onedev.server.util.facade.GroupFacade;
 import io.onedev.server.util.facade.UserFacade;
-import org.apache.shiro.authz.Permission;
-import org.hibernate.annotations.Cache;
-import org.hibernate.annotations.CacheConcurrencyStrategy;
-import org.jetbrains.annotations.Nullable;
-
-import javax.persistence.CascadeType;
-import javax.persistence.Column;
-import javax.persistence.Entity;
-import javax.persistence.OneToMany;
-import javax.validation.constraints.NotEmpty;
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.HashSet;
 
 @Entity
 @Cache(usage=CacheConcurrencyStrategy.READ_WRITE)
@@ -92,7 +94,7 @@ public class Group extends AbstractEntity implements BasePermission {
 		return !(boolean) EditContext.get().getInputValue("administrator");
 	}
 
-	@Editable(order=300, name="Can Create Root Projects", description="Whether or not to allow creating root projects (project without parent)")
+	@Editable(order=350, name="Can Create Root Projects", description="Whether or not to allow creating root projects (project without parent)")
 	@ShowCondition("isAdministratorDisabled")
 	public boolean isCreateRootProjects() {
 		return createRootProjects;
@@ -145,7 +147,6 @@ public class Group extends AbstractEntity implements BasePermission {
 		return members;
 	}
 
-	@Override
 	public GroupFacade getFacade() {
 		return new GroupFacade(getId(), getName());
 	}

server-core/src/main/java/io/onedev/server/model/Issue.java

@@ -929,7 +929,6 @@ public class Issue extends ProjectBelonging implements AttachmentStorageSupport
 		return observables;
 	}
 
-	@Override
 	public IssueFacade getFacade() {
 		return new IssueFacade(getId(), getProject().getId(), getNumber());
 	}

server-core/src/main/java/io/onedev/server/model/IssueComment.java

@@ -81,7 +81,6 @@ public class IssueComment extends EntityComment {
 		this.revisions = revisions;
 	}
 
-	@Override
 	public IssueCommentFacade getFacade() {
 		return new IssueCommentFacade(getId(), getIssue().getId(), getContent());
 	}

server-core/src/main/java/io/onedev/server/model/Iteration.java

@@ -1,13 +1,28 @@
 package io.onedev.server.model;
 
-import io.onedev.server.rest.annotation.Immutable;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Comparator;
+import java.util.HashMap;
+import java.util.Map;
+
+import javax.annotation.Nullable;
+import javax.persistence.CascadeType;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Index;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+import javax.persistence.OneToMany;
+import javax.persistence.Table;
+import javax.persistence.UniqueConstraint;
+
 import org.apache.commons.lang3.StringUtils;
 import org.hibernate.annotations.Cache;
 import org.hibernate.annotations.CacheConcurrencyStrategy;
 
-import javax.annotation.Nullable;
-import javax.persistence.*;
-import java.util.*;
+import io.onedev.server.rest.annotation.Api;
+import io.onedev.server.rest.annotation.Immutable;
 
 @Entity
 @Table(
@@ -39,11 +54,14 @@ public class Iteration extends AbstractEntity {
 	@Column(nullable=false)
 	private String name;
 	
+	@Api(description="Description of the iteration. May be null")
 	@Column(length=MAX_DESCRIPTION_LEN)
 	private String description;
 	
+	@Api(description="Start of the iteration in epoc day. May be null")
 	private Long startDay;
 	
+	@Api(description="Due of the iteration in epoc day. May be null")
 	private Long dueDay;
 	
 	private boolean closed;

server-core/src/main/java/io/onedev/server/model/LabelSpec.java

@@ -1,17 +1,24 @@
 package io.onedev.server.model;
 
+import static io.onedev.server.model.LabelSpec.PROP_NAME;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+import javax.persistence.CascadeType;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Index;
+import javax.persistence.OneToMany;
+import javax.persistence.Table;
+import javax.validation.constraints.NotEmpty;
+
+import org.hibernate.annotations.Cache;
+import org.hibernate.annotations.CacheConcurrencyStrategy;
+
 import io.onedev.server.annotation.Color;
 import io.onedev.server.annotation.Editable;
 import io.onedev.server.rest.annotation.Api;
-import org.hibernate.annotations.Cache;
-import org.hibernate.annotations.CacheConcurrencyStrategy;
-
-import javax.persistence.*;
-import javax.validation.constraints.NotEmpty;
-import java.util.ArrayList;
-import java.util.Collection;
-
-import static io.onedev.server.model.LabelSpec.PROP_NAME;
 
 @Entity
 @Table(indexes={@Index(columnList=PROP_NAME)})

server-core/src/main/java/io/onedev/server/model/LinkSpec.java

@@ -96,6 +96,14 @@ public class LinkSpec extends AbstractEntity {
 		return opposite?getOpposite().getName():getName();
 	}
 
+	public String getDisplayName() {
+		if (opposite != null) {
+			return getName() + " - " + getOpposite().getName();
+		} else {
+			return getName();
+		}
+	}
+
 	public int getOrder() {
 		return order;
 	}
@@ -162,7 +170,6 @@ public class LinkSpec extends AbstractEntity {
 		return updaters;
 	}
 
-	@Override
 	public LinkSpecFacade getFacade() {
 		return new LinkSpecFacade(getId(), getName(), getOpposite()!=null?getOpposite().getName():null);
 	}

server-core/src/main/java/io/onedev/server/model/Membership.java

@@ -1,10 +1,16 @@
 package io.onedev.server.model;
 
+import javax.persistence.Entity;
+import javax.persistence.FetchType;
+import javax.persistence.Index;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+import javax.persistence.Table;
+import javax.persistence.UniqueConstraint;
+
 import org.hibernate.annotations.Cache;
 import org.hibernate.annotations.CacheConcurrencyStrategy;
 
-import javax.persistence.*;
-
 @Entity
 @Table(
 		indexes={@Index(columnList="o_user_id"), @Index(columnList="o_group_id")},
@@ -42,5 +48,5 @@ public class Membership extends AbstractEntity {
 	public void setGroup(Group group) {
 		this.group = group;
 	}
-
+	
 }

server-core/src/main/java/io/onedev/server/model/Project.java

@@ -1,6 +1,5 @@
 package io.onedev.server.model;
 
-import static com.fasterxml.jackson.annotation.JsonProperty.Access.READ_ONLY;
 import static io.onedev.commons.utils.match.WildcardUtils.matchPath;
 import static io.onedev.server.model.Project.PROP_NAME;
 import static io.onedev.server.search.entity.EntitySort.Direction.DESCENDING;
@@ -58,8 +57,6 @@ import org.hibernate.annotations.Cache;
 import org.hibernate.annotations.CacheConcurrencyStrategy;
 import org.hibernate.annotations.DynamicUpdate;
 
-import com.fasterxml.jackson.annotation.JsonIgnore;
-import com.fasterxml.jackson.annotation.JsonProperty;
 import com.google.common.base.Optional;
 import com.google.common.base.Preconditions;
 import com.google.common.collect.Lists;
@@ -128,7 +125,6 @@ import io.onedev.server.model.support.pack.ProjectPackSetting;
 import io.onedev.server.model.support.pullrequest.MergeStrategy;
 import io.onedev.server.model.support.pullrequest.NamedPullRequestQuery;
 import io.onedev.server.model.support.pullrequest.ProjectPullRequestSetting;
-import io.onedev.server.rest.annotation.Api;
 import io.onedev.server.search.entity.SortField;
 import io.onedev.server.security.SecurityUtils;
 import io.onedev.server.util.ComponentContext;
@@ -251,17 +247,12 @@ public class Project extends AbstractEntity implements LabelSupport<ProjectLabel
 
 	@ManyToOne(fetch=FetchType.LAZY)
 	@JoinColumn(nullable=true)
-	@Api(description="Represents the project from which this project is forked. Remove this property if "
-			+ "the project is not a fork when create/update the project. May be null")
 	private Project forkedFrom;
 	
 	@ManyToOne(fetch=FetchType.LAZY)
 	@JoinColumn
-	@Api(description="Represents the parent project. Remove this property if the project does not " +
-			"have a parent project. May be null")
 	private Project parent;
 
-	@JsonIgnore
 	@OneToOne(fetch = FetchType.LAZY)
 	@JoinColumn(unique=true, nullable=false)
 	private ProjectLastEventDate lastEventDate;
@@ -269,21 +260,15 @@ public class Project extends AbstractEntity implements LabelSupport<ProjectLabel
 	@Column(nullable=false)
 	private String name;
 	
-	@JsonProperty(access = READ_ONLY)
 	@Column(nullable=false)
 	private String path;
 	
-	@JsonIgnore
 	private int pathLen;
 
-	// SQL Server does not allow duplicate null values for unique column. So we use 
-	// special prefix to indicate null
-	@JsonIgnore
 	@Column(unique=true)
 	private String key;
 	
 	@Column(length=MAX_DESCRIPTION_LEN)
-	@Api(description = "May be null")
 	private String description;
 	
     @OneToMany(mappedBy="project")
@@ -298,23 +283,19 @@ public class Project extends AbstractEntity implements LabelSupport<ProjectLabel
 	@OneToMany(mappedBy="project", cascade=CascadeType.REMOVE)
 	private Collection<Pack> packs = new ArrayList<>();
 		
-    @JsonIgnore
 	@Lob
 	@Column(nullable=false, length=65535)
 	private ArrayList<BranchProtection> branchProtections = new ArrayList<>();
 	
-    @JsonIgnore
 	@Lob
 	@Column(nullable=false, length=65535)
 	private ArrayList<TagProtection> tagProtections = new ArrayList<>();
 
-    @JsonIgnore
     @Lob
     @Column(nullable=false, length=65535)
 	private LinkedHashMap<String, ContributedProjectSetting> contributedSettings = new LinkedHashMap<>();
 	
 	@Column(nullable=false)
-	@JsonProperty(access = READ_ONLY)
 	private Date createDate = new Date();
 	
 	@OneToMany(mappedBy="targetProject", cascade=CascadeType.REMOVE)
@@ -387,6 +368,10 @@ public class Project extends AbstractEntity implements LabelSupport<ProjectLabel
 	@OneToMany(mappedBy="project", cascade=CascadeType.REMOVE)
 	@Cache(usage=CacheConcurrencyStrategy.READ_WRITE)
 	private Collection<Iteration> iterations = new ArrayList<>();
+
+	@OneToMany(mappedBy="project", cascade=CascadeType.REMOVE)
+	@Cache(usage=CacheConcurrencyStrategy.READ_WRITE)
+	private Collection<Audit> audits = new ArrayList<>();
 	
 	private boolean codeManagement = true;
 	
@@ -409,37 +394,30 @@ public class Project extends AbstractEntity implements LabelSupport<ProjectLabel
 	@Column(unique=true)
 	private String serviceDeskEmailAddress;
 	
-	@JsonIgnore
 	@Lob
 	@Column(length=65535, nullable=false)
 	private ProjectIssueSetting issueSetting = new ProjectIssueSetting();
 	
-	@JsonIgnore
 	@Lob
 	@Column(length=65535, nullable=false)
 	private ProjectBuildSetting buildSetting = new ProjectBuildSetting();
 	
-	@JsonIgnore
 	@Lob
 	@Column(length=65535, nullable=false)
 	private ProjectPullRequestSetting pullRequestSetting = new ProjectPullRequestSetting();
 
-	@JsonIgnore
 	@Lob
 	@Column(length=65535, nullable=false)
 	private ProjectPackSetting packSetting = new ProjectPackSetting();
 	
-	@JsonIgnore
 	@Lob
 	@Column(length=65535)
 	private ArrayList<NamedCommitQuery> namedCommitQueries;
 	
-	@JsonIgnore
 	@Lob
 	@Column(length=65535)
 	private ArrayList<NamedCodeCommentQuery> namedCodeCommentQueries;
 	
-	@JsonIgnore
 	@Lob
 	@Column(length=65535, nullable=false)
 	private ArrayList<WebHook> webHooks = new ArrayList<>();
@@ -774,7 +752,6 @@ public class Project extends AbstractEntity implements LabelSupport<ProjectLabel
 		return blobCache;
 	}
 	
-	@Override
 	public ProjectFacade getFacade() {
 		return new ProjectFacade(getId(), getName(), getKey(), getPath(), getServiceDeskEmailAddress(), 
 				isCodeManagement(), isIssueManagement(), getGitPackConfig(), lastEventDate.getId(), 
@@ -1088,15 +1065,13 @@ public class Project extends AbstractEntity implements LabelSupport<ProjectLabel
 			"the system email address in mail setting definition. Emails sent to this address will be " +
 			"created as issues in this project. The default value takes form of "
 			+ "<tt>&lt;system email address name&gt;+&lt;project path&gt;@&lt;system email address domain&gt;</tt>")
-	@Nullable
-	@JsonProperty
 	@Email
 	@Pattern(regexp = "[^~]+@.+", message = "character '~' not allowed in name part")
 	public String getServiceDeskEmailAddress() {
 		return serviceDeskEmailAddress;
 	}
 
-	public void setServiceDeskEmailAddress(@Nullable String serviceDeskEmailAddress) {
+	public void setServiceDeskEmailAddress(String serviceDeskEmailAddress) {
 		this.serviceDeskEmailAddress = serviceDeskEmailAddress;
 	}
 	
@@ -2042,4 +2017,18 @@ public class Project extends AbstractEntity implements LabelSupport<ProjectLabel
 		return decodeRepoNameAsPath(replace(text, FAKED_GITHUB_REPO_OWNER + "/", ""));
 	}
 	
+	public static Collection<Project> getIndependents(Collection<Project> projects) {
+		Collection<Project> independents = new HashSet<>(projects);
+		for (Iterator<Project> it = independents.iterator(); it.hasNext(); ) {
+			Project independent = it.next();
+			for (Project each : independents) {
+				if (!each.equals(independent) && each.isSelfOrAncestorOf(independent)) {
+					it.remove();
+					break;
+				}
+			}
+		}
+		return independents;
+	}
+	
 }

server-core/src/main/java/io/onedev/server/model/PullRequestComment.java

@@ -70,7 +70,6 @@ public class PullRequestComment extends EntityComment {
 		this.revisions = revisions;
 	}
 
-	@Override
 	public PullRequestCommentFacade getFacade() {
 		return new PullRequestCommentFacade(getId(), getRequest().getId(), getContent());
 	}

server-core/src/main/java/io/onedev/server/model/Role.java

@@ -1,6 +1,29 @@
 package io.onedev.server.model;
 
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.persistence.CascadeType;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Index;
+import javax.persistence.Lob;
+import javax.persistence.OneToMany;
+import javax.persistence.Table;
+import javax.persistence.Transient;
+import javax.validation.constraints.NotEmpty;
+import javax.validation.constraints.NotNull;
+
+import org.apache.shiro.authz.Permission;
+import org.hibernate.annotations.Cache;
+import org.hibernate.annotations.CacheConcurrencyStrategy;
+import org.jetbrains.annotations.Nullable;
+
 import com.google.common.collect.Lists;
+
 import io.onedev.server.OneDev;
 import io.onedev.server.annotation.ChoiceProvider;
 import io.onedev.server.annotation.Editable;
@@ -8,21 +31,40 @@ import io.onedev.server.annotation.RoleName;
 import io.onedev.server.annotation.ShowCondition;
 import io.onedev.server.entitymanager.LinkSpecManager;
 import io.onedev.server.entitymanager.SettingManager;
-import io.onedev.server.model.support.role.*;
-import io.onedev.server.security.permission.*;
+import io.onedev.server.model.support.role.AllIssueFields;
+import io.onedev.server.model.support.role.CodePrivilege;
+import io.onedev.server.model.support.role.IssueFieldSet;
+import io.onedev.server.model.support.role.JobPrivilege;
+import io.onedev.server.model.support.role.PackPrivilege;
+import io.onedev.server.security.permission.AccessBuild;
+import io.onedev.server.security.permission.AccessBuildLog;
+import io.onedev.server.security.permission.AccessBuildPipeline;
+import io.onedev.server.security.permission.AccessBuildReports;
+import io.onedev.server.security.permission.AccessConfidentialIssues;
+import io.onedev.server.security.permission.AccessProject;
+import io.onedev.server.security.permission.AccessTimeTracking;
+import io.onedev.server.security.permission.BasePermission;
+import io.onedev.server.security.permission.CreateChildren;
+import io.onedev.server.security.permission.EditIssueField;
+import io.onedev.server.security.permission.EditIssueLink;
+import io.onedev.server.security.permission.JobPermission;
+import io.onedev.server.security.permission.ManageBuilds;
+import io.onedev.server.security.permission.ManageCodeComments;
+import io.onedev.server.security.permission.ManageIssues;
+import io.onedev.server.security.permission.ManageJob;
+import io.onedev.server.security.permission.ManageProject;
+import io.onedev.server.security.permission.ManagePullRequests;
+import io.onedev.server.security.permission.ReadCode;
+import io.onedev.server.security.permission.ReadPack;
+import io.onedev.server.security.permission.RunJob;
+import io.onedev.server.security.permission.ScheduleIssues;
+import io.onedev.server.security.permission.UploadCache;
+import io.onedev.server.security.permission.WriteCode;
+import io.onedev.server.security.permission.WritePack;
 import io.onedev.server.util.EditContext;
 import io.onedev.server.util.facade.RoleFacade;
 import io.onedev.server.util.facade.UserFacade;
 import io.onedev.server.web.util.WicketUtils;
-import org.apache.shiro.authz.Permission;
-import org.hibernate.annotations.Cache;
-import org.hibernate.annotations.CacheConcurrencyStrategy;
-import org.jetbrains.annotations.Nullable;
-
-import javax.persistence.*;
-import javax.validation.constraints.NotEmpty;
-import javax.validation.constraints.NotNull;
-import java.util.*;
 
 /**
  * @author robin
@@ -37,6 +79,7 @@ public class Role extends AbstractEntity implements BasePermission {
 	private static final long serialVersionUID = 1L;
 
 	public static final String PROP_NAME = "name";
+	
 	public static final Long OWNER_ID = 1L;
 	
 	@Column(nullable=false, unique=true)
@@ -272,10 +315,7 @@ public class Role extends AbstractEntity implements BasePermission {
 	private static Map<String, String> getIssueLinkDisplayNames() {
 		Map<String, String> choices = new LinkedHashMap<>();
 		for (LinkSpec link: OneDev.getInstance(LinkSpecManager.class).queryAndSort()) {
-			if (link.getOpposite() != null)
-				choices.put(link.getName(), link.getName() + " - " + link.getOpposite().getName());
-			else
-				choices.put(link.getName(), link.getName());
+			choices.put(link.getName(), link.getDisplayName());
 		}
 		return choices;
 	}
@@ -338,7 +378,6 @@ public class Role extends AbstractEntity implements BasePermission {
 		this.linkAuthorizations = linkAuthorizations;
 	}
 
-	@Override
 	public RoleFacade getFacade() {
 		return new RoleFacade(getId(), getName());
 	}

server-core/src/main/java/io/onedev/server/model/Setting.java

@@ -21,7 +21,7 @@ public class Setting extends AbstractEntity {
 		GROOVY_SCRIPTS, PULL_REQUEST, BUILD, PACK, PROJECT, SSH, GPG, SSO_CONNECTORS,
 		EMAIL_TEMPLATES, CONTRIBUTED_SETTINGS, SERVICE_DESK_SETTING, 
 		AGENT, PERFORMANCE, BRANDING, CLUSTER_SETTING, SUBSCRIPTION_DATA, ALERT, 
-		SYSTEM_UUID
+		SYSTEM_UUID, AUDIT
 	};
 	
 	@Column(nullable=false, unique=true)

server-core/src/main/java/io/onedev/server/model/SshKey.java

@@ -1,26 +1,36 @@
 package io.onedev.server.model;
 
-import com.fasterxml.jackson.annotation.JsonIgnore;
-import io.onedev.commons.utils.StringUtils;
-import io.onedev.server.annotation.ClassValidating;
-import io.onedev.server.annotation.Editable;
-import io.onedev.server.annotation.Multiline;
-import io.onedev.server.annotation.OmitName;
-import io.onedev.server.ssh.SshKeyUtils;
-import io.onedev.server.validation.Validatable;
+import java.io.IOException;
+import java.security.GeneralSecurityException;
+import java.security.PublicKey;
+import java.util.Date;
+
+import javax.annotation.Nullable;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.FetchType;
+import javax.persistence.Index;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+import javax.persistence.Table;
+import javax.validation.ConstraintValidatorContext;
+import javax.validation.constraints.NotEmpty;
+
 import org.apache.sshd.common.config.keys.KeyUtils;
 import org.apache.sshd.common.digest.BuiltinDigests;
 import org.hibernate.annotations.Cache;
 import org.hibernate.annotations.CacheConcurrencyStrategy;
 
-import javax.annotation.Nullable;
-import javax.persistence.*;
-import javax.validation.ConstraintValidatorContext;
-import javax.validation.constraints.NotEmpty;
-import java.io.IOException;
-import java.security.GeneralSecurityException;
-import java.security.PublicKey;
-import java.util.Date;
+import com.fasterxml.jackson.annotation.JsonIgnore;
+
+import io.onedev.commons.utils.StringUtils;
+import io.onedev.server.annotation.ClassValidating;
+import io.onedev.server.annotation.Editable;
+import io.onedev.server.annotation.Multiline;
+import io.onedev.server.annotation.OmitName;
+import io.onedev.server.rest.annotation.Immutable;
+import io.onedev.server.ssh.SshKeyUtils;
+import io.onedev.server.validation.Validatable;
 
 @Editable
 @Entity
@@ -44,6 +54,7 @@ public class SshKey extends AbstractEntity implements Validatable {
     
     @ManyToOne(fetch=FetchType.LAZY)
     @JoinColumn(nullable=false)
+    @Immutable
     private User owner;
 
     @Editable(name="OpenSSH Public Key", placeholder="OpenSSH public key begins with 'ssh-rsa', "
@@ -93,7 +104,7 @@ public class SshKey extends AbstractEntity implements Validatable {
     		return null;
     }
     
-    public void fingerprint() {
+    public void generateFingerprint() {
         try {
             PublicKey pubEntry = SshKeyUtils.decodeSshPublicKey(content);
             fingerprint = KeyUtils.getFingerPrint(BuiltinDigests.sha256, pubEntry);

server-core/src/main/java/io/onedev/server/model/User.java

@@ -1076,7 +1076,6 @@ public class User extends AbstractEntity implements AuthenticationInfo {
 		return publicEmailAddress.orElse(null);
 	}
 	
-	@Override
 	public UserFacade getFacade() {
 		return new UserFacade(getId(), getName(), getFullName(), isServiceAccount(), isDisabled());
 	}

server-core/src/main/java/io/onedev/server/model/support/CodeAnalysisSetting.java

@@ -12,7 +12,7 @@ public class CodeAnalysisSetting implements Serializable {
 
 	private static final long serialVersionUID = 1L;
 
-	@Api(description = "May be null")
+	@Api(description = "<code>null</code> to inherit from parent project, or all files if no parent")
 	private String analysisFiles;
 	
 	@Editable(order=100, name="Files to Be Analyzed", placeholder="Inherit from parent", rootPlaceholder ="All files", description="OneDev analyzes repository files for code search, "

server-core/src/main/java/io/onedev/server/model/support/ProjectBelonging.java

@@ -1,10 +1,9 @@
 package io.onedev.server.model.support;
 
+import javax.persistence.MappedSuperclass;
+
 import io.onedev.server.model.AbstractEntity;
 import io.onedev.server.model.Project;
-import io.onedev.server.util.facade.ProjectBelongingFacade;
-
-import javax.persistence.MappedSuperclass;
 
 @MappedSuperclass
 public abstract class ProjectBelonging extends AbstractEntity {
@@ -12,15 +11,5 @@ public abstract class ProjectBelonging extends AbstractEntity {
 	private static final long serialVersionUID = 1L;
 
 	public abstract Project getProject();
-	
-	@Override
-	public ProjectBelongingFacade getOldVersion() {
-		return (ProjectBelongingFacade) super.getOldVersion();
-	}
-
-	@Override
-	public ProjectBelongingFacade getFacade() {
-		return new ProjectBelongingFacade(getId(), getProject().getId());
-	}
-	
+		
 }

server-core/src/main/java/io/onedev/server/model/support/administration/AuditSetting.java

@@ -0,0 +1,31 @@
+package io.onedev.server.model.support.administration;
+
+import java.io.Serializable;
+
+import javax.validation.constraints.Min;
+
+import io.onedev.server.annotation.Editable;
+import io.onedev.server.annotation.OmitName;
+
+@Editable
+public class AuditSetting implements Serializable {
+
+	private static final long serialVersionUID = 1L;
+	
+	public static final String PROP_PRESERVE_DAYS = "preserveDays";
+	
+	private int preserveDays = 365;
+
+	@Editable(order = 100, name="Preserve Days", description = "Audit log will be preserved for the specified number of days. " + 
+			"This setting applies to all audit events, including system level and project level")
+	@OmitName
+	@Min(value = 7, message = "At least 7 days should be specified")
+	public int getPreserveDays() {
+		return preserveDays;
+	}
+
+	public void setPreserveDays(int preserveDays) {
+		this.preserveDays = preserveDays;
+	}
+	
+}

server-core/src/main/java/io/onedev/server/model/support/administration/SystemSetting.java

@@ -1,6 +1,19 @@
 package io.onedev.server.model.support.administration;
 
+import java.io.Serializable;
+import java.net.MalformedURLException;
+import java.net.URL;
+
+import javax.annotation.Nullable;
+import javax.validation.ConstraintValidatorContext;
+import javax.validation.Valid;
+import javax.validation.constraints.NotEmpty;
+import javax.validation.constraints.NotNull;
+
+import org.apache.commons.lang3.StringUtils;
+
 import com.google.common.base.Preconditions;
+
 import io.onedev.server.OneDev;
 import io.onedev.server.ServerConfig;
 import io.onedev.server.annotation.ClassValidating;
@@ -13,16 +26,6 @@ import io.onedev.server.git.location.SystemGit;
 import io.onedev.server.util.EditContext;
 import io.onedev.server.validation.Validatable;
 import io.onedev.server.web.util.WicketUtils;
-import org.apache.commons.lang3.StringUtils;
-
-import javax.annotation.Nullable;
-import javax.validation.ConstraintValidatorContext;
-import javax.validation.Valid;
-import javax.validation.constraints.NotEmpty;
-import javax.validation.constraints.NotNull;
-import java.io.Serializable;
-import java.net.MalformedURLException;
-import java.net.URL;
 
 @Editable
 @ClassValidating
@@ -47,7 +50,7 @@ public class SystemSetting implements Serializable, Validatable {
 	private GitLocation gitLocation = new SystemGit();
 	
 	private CurlLocation curlLocation = new SystemCurl();
-	
+		
 	private boolean disableAutoUpdateCheck;
 	
 	private boolean disableDashboard;

server-core/src/main/java/io/onedev/server/model/support/code/GitPackConfig.java

@@ -12,16 +12,16 @@ public class GitPackConfig implements Serializable {
 
 	private static final long serialVersionUID = 1L;
 
-	@Api(description = "May be null", example = "0")
+	@Api(description = "<code>null</code> for default setting", example = "0")
 	private String windowMemory;
 
-	@Api(description = "May be null", example="1g")
+	@Api(description = "<code>null</code> for default setting", example="1g")
 	private String packSizeLimit;
 
-	@Api(description = "May be null", example="0")
+	@Api(description = "<code>null</code> for default setting", example="0")
 	private String threads;
 
-	@Api(description = "May be null", example="10")
+	@Api(description = "<code>null</code> for default setting", example="10")
 	private String window;
 
 	@Editable(order = 100, placeholder = "Use default", description = "Optionally specify value of git config " +

server-core/src/main/java/io/onedev/server/model/support/issue/BoardSpec.java

@@ -1,6 +1,25 @@
 package io.onedev.server.model.support.issue;
 
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import javax.annotation.Nullable;
+import javax.validation.constraints.NotEmpty;
+import javax.validation.constraints.Size;
+
+import org.unbescape.html.HtmlEscape;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.google.common.collect.Lists;
+import com.thoughtworks.xstream.annotations.XStreamOmitField;
+
 import io.onedev.server.OneDev;
 import io.onedev.server.annotation.ChoiceProvider;
 import io.onedev.server.annotation.Editable;
@@ -19,15 +38,12 @@ import io.onedev.server.model.support.issue.field.spec.userchoicefield.UserChoic
 import io.onedev.server.search.entity.issue.IssueQueryUpdater;
 import io.onedev.server.util.EditContext;
 import io.onedev.server.util.usage.Usage;
-import io.onedev.server.web.component.issue.workflowreconcile.*;
+import io.onedev.server.web.component.issue.workflowreconcile.ReconcileUtils;
+import io.onedev.server.web.component.issue.workflowreconcile.UndefinedFieldResolution;
+import io.onedev.server.web.component.issue.workflowreconcile.UndefinedFieldValue;
+import io.onedev.server.web.component.issue.workflowreconcile.UndefinedFieldValuesResolution;
+import io.onedev.server.web.component.issue.workflowreconcile.UndefinedStateResolution;
 import io.onedev.server.web.component.stringchoice.StringChoiceProvider;
-import org.unbescape.html.HtmlEscape;
-
-import javax.annotation.Nullable;
-import javax.validation.constraints.NotEmpty;
-import javax.validation.constraints.Size;
-import java.io.Serializable;
-import java.util.*;
 
 @Editable
 public class BoardSpec implements Serializable {
@@ -52,6 +68,8 @@ public class BoardSpec implements Serializable {
 	
 	private List<String> displayLinks = new ArrayList<>();
 	
+	@XStreamOmitField
+	@JsonIgnore
 	private List<String> editColumns;
 	
 	@Editable(order=100)

server-core/src/main/java/io/onedev/server/rest/resource/AccessTokenAuthorizationResource.java

@@ -1,18 +1,30 @@
 package io.onedev.server.rest.resource;
 
-import io.onedev.server.entitymanager.AccessTokenAuthorizationManager;
-import io.onedev.server.model.AccessTokenAuthorization;
-import io.onedev.server.rest.annotation.Api;
-import org.apache.shiro.authz.UnauthorizedException;
+import static io.onedev.server.security.SecurityUtils.canManageProject;
+import static io.onedev.server.security.SecurityUtils.getAuthUser;
+import static io.onedev.server.security.SecurityUtils.isAdministrator;
 
 import javax.inject.Inject;
 import javax.inject.Singleton;
 import javax.validation.constraints.NotNull;
-import javax.ws.rs.*;
+import javax.ws.rs.BadRequestException;
+import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.GET;
+import javax.ws.rs.POST;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 
-import static io.onedev.server.security.SecurityUtils.*;
+import org.apache.shiro.authz.UnauthorizedException;
+
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AccessTokenAuthorizationManager;
+import io.onedev.server.entitymanager.AuditManager;
+import io.onedev.server.model.AccessTokenAuthorization;
+import io.onedev.server.rest.annotation.Api;
 
 @Api(order=9500, description = "This resource manages project authorizations of access tokens. Note that " +
 		"project authorizations will not take effect if option <tt>hasOwnerPermissions</tt> is enabled " +
@@ -25,15 +37,18 @@ public class AccessTokenAuthorizationResource {
 
 	private final AccessTokenAuthorizationManager accessTokenAuthorizationManager;
 
+	private final AuditManager auditManager;
+
 	@Inject
-	public AccessTokenAuthorizationResource(AccessTokenAuthorizationManager accessTokenAuthorizationManager) {
+	public AccessTokenAuthorizationResource(AccessTokenAuthorizationManager accessTokenAuthorizationManager, AuditManager auditManager) {
 		this.accessTokenAuthorizationManager = accessTokenAuthorizationManager;
+		this.auditManager = auditManager;
 	}
 
 	@Api(order=100, description = "Get access token authorization of specified id")
 	@Path("/{authorizationId}")
 	@GET
-	public AccessTokenAuthorization get(@PathParam("authorizationId") Long authorizationId) {
+	public AccessTokenAuthorization getAuthorization(@PathParam("authorizationId") Long authorizationId) {
 		var authorization = accessTokenAuthorizationManager.load(authorizationId);
 		var owner = authorization.getToken().getOwner();
 		if (!isAdministrator() && !owner.equals(getAuthUser())) 
@@ -43,38 +58,53 @@ public class AccessTokenAuthorizationResource {
 	
 	@Api(order=200, description="Create access token authorization. Access token owner should have permission to manage authorized project")
 	@POST
-	public Long create(@NotNull AccessTokenAuthorization authorization) {
+	public Long createAuthorization(@NotNull AccessTokenAuthorization authorization) {
 		var owner = authorization.getToken().getOwner();
-		if (!isAdministrator() && !owner.equals(getAuthUser())
-				|| !canManageProject(owner.asSubject(), authorization.getProject())) {
+		if (!isAdministrator() && !owner.equals(getAuthUser())) 
 			throw new UnauthorizedException();
-		}
+		if (!canManageProject(owner.asSubject(), authorization.getProject()))
+			throw new BadRequestException("Access token owner should have permission to manage authorized project");
+
 		accessTokenAuthorizationManager.createOrUpdate(authorization);
+		if (!getAuthUser().equals(owner)) {
+			var newAuditContent = VersionedXmlDoc.fromBean(authorization).toXML();
+			auditManager.audit(null, "created access token authorization for account \"" + owner.getName() + "\" via RESTful API", null, newAuditContent);
+		}
 		return authorization.getId();
 	}
 
 	@Api(order=250, description="Update access authorization of specified id. Access token owner should have permission to manage authorized project")
 	@Path("/{authorizationId}")
 	@POST
-	public Response update(@PathParam("authorizationId") Long authorizationId, @NotNull AccessTokenAuthorization authorization) {
+	public Response updateAuthorization(@PathParam("authorizationId") Long authorizationId, @NotNull AccessTokenAuthorization authorization) {
 		var owner = authorization.getToken().getOwner();
-		if (!isAdministrator() && !owner.equals(getAuthUser())
-				|| !canManageProject(owner.asSubject(), authorization.getProject())) {
+		if (!isAdministrator() && !owner.equals(getAuthUser())) 
 			throw new UnauthorizedException();
-		}
+		if (!canManageProject(owner.asSubject(), authorization.getProject()))
+			throw new BadRequestException("Access token owner should have permission to manage authorized project");
+
 		accessTokenAuthorizationManager.createOrUpdate(authorization);
+		if (!getAuthUser().equals(owner)) {
+			var oldAuditContent = authorization.getOldVersion().toXML();
+			var newAuditContent = VersionedXmlDoc.fromBean(authorization).toXML();
+			auditManager.audit(null, "changed access token authorization for account \"" + owner.getName() + "\" via RESTful API", oldAuditContent, newAuditContent);
+		}
 		return Response.ok().build();
 	}
 	
 	@Api(order=300, description = "Delete access token authorization of specified id")
 	@Path("/{authorizationId}")
 	@DELETE
-	public Response delete(@PathParam("authorizationId") Long authorizationId) {
+	public Response deleteAuthorization(@PathParam("authorizationId") Long authorizationId) {
 		var authorization = accessTokenAuthorizationManager.load(authorizationId);
 		var owner = authorization.getToken().getOwner();
 		if (!isAdministrator() && !owner.equals(getAuthUser()))
 			throw new UnauthorizedException();
 		accessTokenAuthorizationManager.delete(authorization);
+		if (!getAuthUser().equals(owner)) {
+			var oldAuditContent = VersionedXmlDoc.fromBean(authorization).toXML();
+			auditManager.audit(null, "deleted access token authorization for account \"" + owner.getName() + "\" via RESTful API", oldAuditContent, null);
+		}
 		return Response.ok().build();
 	}
 	

server-core/src/main/java/io/onedev/server/rest/resource/AccessTokenResource.java

@@ -1,23 +1,34 @@
 package io.onedev.server.rest.resource;
 
-import io.onedev.commons.utils.ExplicitException;
-import io.onedev.server.entitymanager.AccessTokenManager;
-import io.onedev.server.model.AccessToken;
-import io.onedev.server.model.AccessTokenAuthorization;
-import io.onedev.server.rest.annotation.Api;
-import org.apache.shiro.authz.UnauthorizedException;
+import static io.onedev.server.security.SecurityUtils.getAuthUser;
+import static io.onedev.server.security.SecurityUtils.isAdministrator;
+
+import java.util.Collection;
 
 import javax.inject.Inject;
 import javax.inject.Singleton;
 import javax.validation.Valid;
 import javax.validation.constraints.NotNull;
-import javax.ws.rs.*;
+import javax.ws.rs.BadRequestException;
+import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.GET;
+import javax.ws.rs.POST;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
-import java.util.Collection;
 
-import static io.onedev.server.security.SecurityUtils.getAuthUser;
-import static io.onedev.server.security.SecurityUtils.isAdministrator;
+import org.apache.shiro.authz.UnauthorizedException;
+
+import io.onedev.commons.utils.ExplicitException;
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AccessTokenManager;
+import io.onedev.server.entitymanager.AuditManager;
+import io.onedev.server.model.AccessToken;
+import io.onedev.server.model.AccessTokenAuthorization;
+import io.onedev.server.rest.annotation.Api;
 
 @Api(order=5030)
 @Path("/access-tokens")
@@ -27,16 +38,19 @@ import static io.onedev.server.security.SecurityUtils.isAdministrator;
 public class AccessTokenResource {
 	
 	private final AccessTokenManager accessTokenManager;
+
+	private final AuditManager auditManager;
 	
 	@Inject
-	public AccessTokenResource(AccessTokenManager accessTokenManager) {
+	public AccessTokenResource(AccessTokenManager accessTokenManager, AuditManager auditManager) {
 		this.accessTokenManager = accessTokenManager;
+		this.auditManager = auditManager;
 	}
 
 	@Api(order=100)
 	@Path("/{accessTokenId}")
 	@GET
-	public AccessToken get(@PathParam("accessTokenId") Long accessTokenId) {
+	public AccessToken getToken(@PathParam("accessTokenId") Long accessTokenId) {
 		var accessToken = accessTokenManager.load(accessTokenId);
     	if (!isAdministrator() && !accessToken.getOwner().equals(getAuthUser())) 
 			throw new UnauthorizedException();
@@ -55,7 +69,7 @@ public class AccessTokenResource {
 	
 	@Api(order=200, description="Create access token")
 	@POST
-	public Long create(@NotNull @Valid AccessToken accessToken) {
+	public Long createToken(@NotNull @Valid AccessToken accessToken) {
 		var owner = accessToken.getOwner();
 		if (!isAdministrator() && !owner.equals(getAuthUser()))
 			throw new UnauthorizedException();
@@ -64,35 +78,55 @@ public class AccessTokenResource {
 		
 		if (accessTokenManager.findByOwnerAndName(owner, accessToken.getName()) != null)
 			throw new ExplicitException("Name already used by another access token of the owner");
-		
+			
 		accessTokenManager.createOrUpdate(accessToken);
+
+		if (!getAuthUser().equals(owner)) {
+			var newAuditContent = VersionedXmlDoc.fromBean(accessToken.getFacade()).toXML();
+			auditManager.audit(null, "created access token \"" + accessToken.getName() + "\" for account \"" + owner.getName() + "\" via RESTful API", 
+					null, newAuditContent);
+		}
+
 		return accessToken.getId();
 	}
 
 	@Api(order=250, description="Update access token")
 	@Path("/{accessTokenId}")
 	@POST
-	public Response update(@PathParam("accessTokenId") Long accessTokenId, @NotNull @Valid AccessToken accessToken) {
+	public Response updateToken(@PathParam("accessTokenId") Long accessTokenId, @NotNull @Valid AccessToken accessToken) {
 		var owner = accessToken.getOwner();
 		if (!isAdministrator() && !owner.equals(getAuthUser()))
 			throw new UnauthorizedException();
-		
+
 		var accessTokenWithSameName = accessTokenManager.findByOwnerAndName(owner, accessToken.getName());
 		if (accessTokenWithSameName != null && !accessTokenWithSameName.equals(accessToken))
-			throw new ExplicitException("Name already used by another access token of the owner");
+			throw new BadRequestException("Name already used by another access token of the owner");
 		
 		accessTokenManager.createOrUpdate(accessToken);
+
+		if (!getAuthUser().equals(owner)) {
+			var oldAuditContent = accessToken.getOldVersion().toXML();
+			var newAuditContent = VersionedXmlDoc.fromBean(accessToken).toXML();
+			auditManager.audit(null, "changed access token \"" + accessToken.getName() + "\" for account \"" + owner.getName() + "\" via RESTful API", 
+					oldAuditContent, newAuditContent);
+		}
 		return Response.ok().build();
 	}
 	
 	@Api(order=300)
 	@Path("/{accessTokenId}")
 	@DELETE
-	public Response delete(@PathParam("accessTokenId") Long accessTokenId) {
+	public Response deleteToken(@PathParam("accessTokenId") Long accessTokenId) {
 		var accessToken = accessTokenManager.load(accessTokenId);
 		if (!isAdministrator() && !accessToken.getOwner().equals(getAuthUser())) 
 			throw new UnauthorizedException();
 		accessTokenManager.delete(accessToken);
+
+		if (!getAuthUser().equals(accessToken.getOwner())) {
+			var oldAuditContent = VersionedXmlDoc.fromBean(accessToken.getFacade()).toXML();
+			auditManager.audit(null, "deleted access token \"" + accessToken.getName() + "\" for account \"" + accessToken.getOwner().getName() + "\" via RESTful API", 
+					oldAuditContent, null);
+		}
 		return Response.ok().build();
 	}
 

server-core/src/main/java/io/onedev/server/rest/resource/AgentResource.java

@@ -18,11 +18,13 @@ import javax.ws.rs.core.Response;
 import org.apache.shiro.authz.UnauthorizedException;
 
 import io.onedev.commons.utils.ExplicitException;
+import io.onedev.server.data.migration.VersionedXmlDoc;
 import io.onedev.server.entitymanager.AgentAttributeManager;
 import io.onedev.server.entitymanager.AgentManager;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.model.Agent;
-import io.onedev.server.rest.annotation.Api;
 import io.onedev.server.rest.InvalidParamException;
+import io.onedev.server.rest.annotation.Api;
 import io.onedev.server.search.entity.agent.AgentQuery;
 import io.onedev.server.security.SecurityUtils;
 
@@ -37,16 +39,19 @@ public class AgentResource {
 	
 	private final AgentAttributeManager agentAttributeManager;
 	
+	private final AuditManager auditManager;
+	
 	@Inject
-	public AgentResource(AgentManager agentManager, AgentAttributeManager agentAttributeManager) {
+	public AgentResource(AgentManager agentManager, AgentAttributeManager agentAttributeManager, AuditManager auditManager) {
 		this.agentManager = agentManager;
 		this.agentAttributeManager = agentAttributeManager;
+		this.auditManager = auditManager;
 	}
 
 	@Api(order=100)
 	@Path("/{agentId}")
     @GET
-    public Agent getBasicInfo(@PathParam("agentId") Long agentId) {
+    public Agent getAgent(@PathParam("agentId") Long agentId) {
     	if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
     	return agentManager.load(agentId);
@@ -63,7 +68,7 @@ public class AgentResource {
 	
 	@Api(order=300)
 	@GET
-    public List<Agent> queryBasicInfo(
+    public List<Agent> queryAgents(
     		@QueryParam("query") @Api(description="Syntax of this query is the same as in <a href='/~administration/agents'>agent management page</a>", example="\"Name\" is \"agentName\"") String query, 
     		@QueryParam("offset") @Api(example="0") int offset, 
     		@QueryParam("count") @Api(example="100") int count) {
@@ -89,8 +94,12 @@ public class AgentResource {
     	Agent agent = agentManager.load(agentId);
     	if (!agent.isOnline())
     		throw new ExplicitException("Unable to update attributes as agent is offline");
+		var oldAuditContent = VersionedXmlDoc.fromBean(agent.getAttributeMap()).toXML();
 		agentAttributeManager.syncAttributes(agent, attributes);
 		agentManager.attributesUpdated(agent);
+		var newAuditContent = VersionedXmlDoc.fromBean(agent.getAttributeMap()).toXML();
+		auditManager.audit(null, "changed attributes of agent \"" + agent.getName() + "\" via RESTful API", 
+				oldAuditContent, newAuditContent);
 		return Response.ok().build();
     }
 	

server-core/src/main/java/io/onedev/server/rest/resource/AgentTokenResource.java

@@ -1,23 +1,33 @@
 package io.onedev.server.rest.resource;
 
-import io.onedev.server.entitymanager.AgentManager;
-import io.onedev.server.entitymanager.AgentTokenManager;
-import io.onedev.server.model.Agent;
-import io.onedev.server.model.AgentToken;
-import io.onedev.server.persistence.dao.EntityCriteria;
-import io.onedev.server.rest.annotation.Api;
-import io.onedev.server.rest.InvalidParamException;
-import io.onedev.server.rest.resource.support.RestConstants;
-import io.onedev.server.security.SecurityUtils;
-import org.apache.shiro.authz.UnauthorizedException;
-import org.hibernate.criterion.Restrictions;
+import java.util.List;
 
 import javax.inject.Inject;
 import javax.inject.Singleton;
-import javax.ws.rs.*;
+import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.GET;
+import javax.ws.rs.POST;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.QueryParam;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
-import java.util.List;
+
+import org.apache.shiro.authz.UnauthorizedException;
+import org.hibernate.criterion.Restrictions;
+
+import io.onedev.server.entitymanager.AgentManager;
+import io.onedev.server.entitymanager.AgentTokenManager;
+import io.onedev.server.entitymanager.AuditManager;
+import io.onedev.server.model.Agent;
+import io.onedev.server.model.AgentToken;
+import io.onedev.server.persistence.dao.EntityCriteria;
+import io.onedev.server.rest.InvalidParamException;
+import io.onedev.server.rest.annotation.Api;
+import io.onedev.server.rest.resource.support.RestConstants;
+import io.onedev.server.security.SecurityUtils;
 
 @Api(order=10100)
 @Path("/agent-tokens")
@@ -30,22 +40,25 @@ public class AgentTokenResource {
 	
 	private final AgentManager agentManager;
 	
+	private final AuditManager auditManager;
+	
 	@Inject
-	public AgentTokenResource(AgentTokenManager tokenManager, AgentManager agentManager) {
+	public AgentTokenResource(AgentTokenManager tokenManager, AgentManager agentManager, AuditManager auditManager) {
 		this.tokenManager = tokenManager;
 		this.agentManager = agentManager;
+		this.auditManager = auditManager;
 	}
 
 	@Api(order=100)
 	@Path("/{tokenId}")
     @GET
-    public AgentToken getBasicInfo(@PathParam("tokenId") Long tokenId) {
+    public AgentToken getToken(@PathParam("tokenId") Long tokenId) {
     	if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
     	return tokenManager.load(tokenId);
     }
 
-	@Api(order=100)
+	@Api(order=100, description="Get agent using specified token")
 	@Path("/{tokenId}/agent")
     @GET
     public Agent getAgent(@PathParam("tokenId") Long tokenId) {
@@ -57,7 +70,7 @@ public class AgentTokenResource {
 	
 	@Api(order=200)
 	@GET
-    public List<AgentToken> queryBasicInfo(@QueryParam("value") String value, 
+    public List<AgentToken> queryTokens(@QueryParam("value") String value, 
     		@QueryParam("offset") @Api(example="0") int offset, 
     		@QueryParam("count") @Api(example="100") int count) {
 		if (!SecurityUtils.isAdministrator())
@@ -76,21 +89,23 @@ public class AgentTokenResource {
 	
 	@Api(order=500, description="Create new token")
     @POST
-    public Long create() {
+    public Long createToken() {
     	if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
 		AgentToken token = new AgentToken();
 	    tokenManager.createOrUpdate(token);
+		auditManager.audit(null, "created agent token via RESTful API", null, null);
 	    return token.getId();
     }
 	
 	@Api(order=600)
 	@Path("/{tokenId}")
     @DELETE
-    public Response delete(@PathParam("tokenId") Long tokenId) {
+    public Response deleteToken(@PathParam("tokenId") Long tokenId) {
     	if (!SecurityUtils.isAdministrator())
 			throw new UnauthorizedException();
     	tokenManager.delete(tokenManager.load(tokenId));
+		auditManager.audit(null, "deleted agent token via RESTful API", null, null);
     	return Response.ok().build();
     }
 	

server-core/src/main/java/io/onedev/server/rest/resource/ArtifactResource.java

@@ -47,7 +47,7 @@ public class ArtifactResource {
 	
 	private final BuildManager buildManager;
 	
-	private final ClusterManager clusterManager;
+	private final ClusterManager clusterManager;	
 	
 	@Inject
 	public ArtifactResource(ProjectManager projectManager, BuildManager buildManager, 

server-core/src/main/java/io/onedev/server/rest/resource/BaseAuthorizationResource.java

@@ -15,6 +15,8 @@ import javax.ws.rs.core.Response;
 
 import org.apache.shiro.authz.UnauthorizedException;
 
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.entitymanager.BaseAuthorizationManager;
 import io.onedev.server.model.BaseAuthorization;
 import io.onedev.server.rest.annotation.Api;
@@ -29,15 +31,18 @@ public class BaseAuthorizationResource {
 
 	private final BaseAuthorizationManager authorizationManager;
 
+	private final AuditManager auditManager;
+
 	@Inject
-	public BaseAuthorizationResource(BaseAuthorizationManager authorizationManager) {
+	public BaseAuthorizationResource(BaseAuthorizationManager authorizationManager, AuditManager auditManager) {
 		this.authorizationManager = authorizationManager;
+		this.auditManager = auditManager;
 	}
 
 	@Api(order=100, description = "Get base authorization of specified id")
 	@Path("/{authorizationId}")
 	@GET
-	public BaseAuthorization get(@PathParam("authorizationId") Long authorizationId) {
+	public BaseAuthorization getAuthorization(@PathParam("authorizationId") Long authorizationId) {
 		var authorization = authorizationManager.load(authorizationId);
 		if (!SecurityUtils.canManageProject(authorization.getProject()))
 			throw new UnauthorizedException();
@@ -46,21 +51,25 @@ public class BaseAuthorizationResource {
 	
 	@Api(order=200, description="Create base authorization")
 	@POST
-	public Long create(@NotNull BaseAuthorization authorization) {
+	public Long createAuthorization(@NotNull BaseAuthorization authorization) {
 		if (!SecurityUtils.canManageProject(authorization.getProject()))
 			throw new UnauthorizedException();
 		authorizationManager.create(authorization);
+		var newAuditContent = VersionedXmlDoc.fromBean(authorization).toXML();
+		auditManager.audit(authorization.getProject(), "created base authorization via RESTful API", null, newAuditContent);
 		return authorization.getId();
 	}
 
 	@Api(order=300, description = "Delete base authorization of specified id")
 	@Path("/{authorizationId}")
 	@DELETE
-	public Response delete(@PathParam("authorizationId") Long authorizationId) {
+	public Response deleteAuthorization(@PathParam("authorizationId") Long authorizationId) {
 		var authorization = authorizationManager.load(authorizationId);
 		if (!SecurityUtils.canManageProject(authorization.getProject()))
 			throw new UnauthorizedException();
 		authorizationManager.delete(authorization);
+		var oldAuditContent = VersionedXmlDoc.fromBean(authorization).toXML();
+		auditManager.audit(authorization.getProject(), "deleted base authorization via RESTful API", oldAuditContent, null);
 		return Response.ok().build();
 	}
 	

server-core/src/main/java/io/onedev/server/rest/resource/BuildLabelResource.java

@@ -29,7 +29,7 @@ public class BuildLabelResource {
 	
 	@Api(order=200, description="Create build label")
 	@POST
-	public Long create(@NotNull BuildLabel buildLabel) {
+	public Long createLabel(@NotNull BuildLabel buildLabel) {
 		if (!SecurityUtils.canManageBuild(buildLabel.getBuild()))
 			throw new UnauthorizedException();
 		buildLabelManager.create(buildLabel);
@@ -39,7 +39,7 @@ public class BuildLabelResource {
 	@Api(order=300)
 	@Path("/{buildLabelId}")
 	@DELETE
-	public Response delete(@PathParam("buildLabelId") Long buildLabelId) {
+	public Response deleteLabel(@PathParam("buildLabelId") Long buildLabelId) {
 		BuildLabel buildLabel = buildLabelManager.load(buildLabelId);
 		if (!SecurityUtils.canManageBuild(buildLabel.getBuild()))
 			throw new UnauthorizedException();

server-core/src/main/java/io/onedev/server/rest/resource/BuildResource.java

@@ -17,18 +17,20 @@ import javax.ws.rs.QueryParam;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 
-import io.onedev.server.model.BuildLabel;
 import org.apache.commons.lang3.SerializationUtils;
 import org.apache.shiro.authz.UnauthorizedException;
 
 import io.onedev.server.buildspec.param.spec.ParamSpec;
+import io.onedev.server.buildspecmodel.inputspec.SecretInput;
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.entitymanager.BuildManager;
 import io.onedev.server.model.Build;
 import io.onedev.server.model.BuildDependence;
+import io.onedev.server.model.BuildLabel;
 import io.onedev.server.model.BuildParam;
-import io.onedev.server.buildspecmodel.inputspec.SecretInput;
-import io.onedev.server.rest.annotation.Api;
 import io.onedev.server.rest.InvalidParamException;
+import io.onedev.server.rest.annotation.Api;
 import io.onedev.server.rest.resource.support.RestConstants;
 import io.onedev.server.search.entity.build.BuildQuery;
 import io.onedev.server.security.SecurityUtils;
@@ -44,15 +46,18 @@ public class BuildResource {
 
 	private final BuildManager buildManager;
 	
+	private final AuditManager auditManager;
+	
 	@Inject
-	public BuildResource(BuildManager buildManager) {
+	public BuildResource(BuildManager buildManager, AuditManager auditManager) {
 		this.buildManager = buildManager;
+		this.auditManager = auditManager;
 	}
 
 	@Api(order=100)
 	@Path("/{buildId}")
     @GET
-    public Build getBasicInfo(@PathParam("buildId") Long buildId) {
+    public Build getBuild(@PathParam("buildId") Long buildId) {
 		Build build = buildManager.load(buildId);
     	if (!SecurityUtils.canAccessBuild(build)) 
 			throw new UnauthorizedException();
@@ -118,7 +123,7 @@ public class BuildResource {
 	
 	@Api(order=600)
 	@GET
-    public List<Build> queryBasicInfo(
+    public List<Build> queryBuilds(
     		@QueryParam("query") @Api(description="Syntax of this query is the same as in <a href='/~builds'>builds page</a>", example="\"Job\" is \"Release\"") String query, 
     		@QueryParam("offset") @Api(example="0") int offset, 
     		@QueryParam("count") @Api(example="100") int count) {
@@ -139,11 +144,13 @@ public class BuildResource {
 	@Api(order=700)
 	@Path("/{buildId}")
     @DELETE
-    public Response delete(@PathParam("buildId") Long buildId) {
+    public Response deleteBuild(@PathParam("buildId") Long buildId) {
     	Build build = buildManager.load(buildId);
     	if (!SecurityUtils.canManageBuild(build))
 			throw new UnauthorizedException();
     	buildManager.delete(build);
+		var oldAuditContent = VersionedXmlDoc.fromBean(build).toXML();
+		auditManager.audit(build.getProject(), "deleted build \"" + build.getReference().toString(build.getProject()) + "\" via RESTful API", oldAuditContent, null);
     	return Response.ok().build();
     }
 	

server-core/src/main/java/io/onedev/server/rest/resource/CodeCommentResource.java

@@ -1,16 +1,24 @@
 package io.onedev.server.rest.resource;
 
+import javax.inject.Inject;
+import javax.inject.Singleton;
+import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.GET;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+
+import org.apache.shiro.authz.UnauthorizedException;
+
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.entitymanager.CodeCommentManager;
 import io.onedev.server.model.CodeComment;
 import io.onedev.server.rest.annotation.Api;
 import io.onedev.server.security.SecurityUtils;
-import org.apache.shiro.authz.UnauthorizedException;
-
-import javax.inject.Inject;
-import javax.inject.Singleton;
-import javax.ws.rs.*;
-import javax.ws.rs.core.MediaType;
-import javax.ws.rs.core.Response;
 
 @Api(order=4700)
 @Path("/code-comments")
@@ -21,15 +29,18 @@ public class CodeCommentResource {
 
 	private final CodeCommentManager commentManager;
 
+	private final AuditManager auditManager;
+
 	@Inject
-	public CodeCommentResource(CodeCommentManager commentManager) {
+	public CodeCommentResource(CodeCommentManager commentManager, AuditManager auditManager) {
 		this.commentManager = commentManager;
+		this.auditManager = auditManager;
 	}
 
 	@Api(order=100)
 	@Path("/{commentId}")
 	@GET
-	public CodeComment get(@PathParam("commentId") Long commentId) {
+	public CodeComment getComment(@PathParam("commentId") Long commentId) {
 		var comment = commentManager.load(commentId);
     	if (!SecurityUtils.canReadCode(comment.getProject()))  
 			throw new UnauthorizedException();
@@ -39,11 +50,13 @@ public class CodeCommentResource {
 	@Api(order=200)
 	@Path("/{commentId}")
 	@DELETE
-	public Response delete(@PathParam("commentId") Long commentId) {
+	public Response deleteComment(@PathParam("commentId") Long commentId) {
 		var comment = commentManager.load(commentId);
     	if (!SecurityUtils.canModifyOrDelete(comment)) 
 			throw new UnauthorizedException();
 		commentManager.delete(comment);
+		var oldAuditContent = VersionedXmlDoc.fromBean(comment).toXML();
+		auditManager.audit(comment.getProject(), "deleted code comment on file \"" + comment.getMark().getPath() + "\" via RESTful API", oldAuditContent, null);
 		return Response.ok().build();
 	}
 	

server-core/src/main/java/io/onedev/server/rest/resource/EmailAddressResource.java

@@ -1,22 +1,30 @@
 package io.onedev.server.rest.resource;
 
-import io.onedev.commons.utils.ExplicitException;
-import io.onedev.server.entitymanager.EmailAddressManager;
-import io.onedev.server.entitymanager.SettingManager;
-import io.onedev.server.model.EmailAddress;
-import io.onedev.server.rest.annotation.Api;
-import io.onedev.server.security.SecurityUtils;
-import org.apache.shiro.authz.UnauthorizedException;
+import static io.onedev.server.security.SecurityUtils.getAuthUser;
 
 import javax.inject.Inject;
 import javax.inject.Singleton;
 import javax.validation.Valid;
 import javax.validation.constraints.NotNull;
-import javax.ws.rs.*;
+import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.GET;
+import javax.ws.rs.POST;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 
-import static io.onedev.server.security.SecurityUtils.getAuthUser;
+import org.apache.shiro.authz.UnauthorizedException;
+
+import io.onedev.commons.utils.ExplicitException;
+import io.onedev.server.entitymanager.AuditManager;
+import io.onedev.server.entitymanager.EmailAddressManager;
+import io.onedev.server.entitymanager.SettingManager;
+import io.onedev.server.model.EmailAddress;
+import io.onedev.server.rest.annotation.Api;
+import io.onedev.server.security.SecurityUtils;
 
 @Api(order=5010)
 @Path("/email-addresses")
@@ -29,16 +37,19 @@ public class EmailAddressResource {
 	
 	private final SettingManager settingManager;
 
+	private final AuditManager auditManager;
+
 	@Inject
-	public EmailAddressResource(EmailAddressManager emailAddressManager, SettingManager settingManager) {
+	public EmailAddressResource(EmailAddressManager emailAddressManager, SettingManager settingManager, AuditManager auditManager) {
 		this.emailAddressManager = emailAddressManager;
 		this.settingManager = settingManager;
+		this.auditManager = auditManager;
 	}
 
 	@Api(order=100)
 	@Path("/{emailAddressId}")
 	@GET
-	public EmailAddress get(@PathParam("emailAddressId") Long emailAddressId) {
+	public EmailAddress getEmailAddress(@PathParam("emailAddressId") Long emailAddressId) {
 		EmailAddress emailAddress = emailAddressManager.load(emailAddressId);
     	if (!SecurityUtils.isAdministrator() && !emailAddress.getOwner().equals(getAuthUser())) 
 			throw new UnauthorizedException();
@@ -48,7 +59,7 @@ public class EmailAddressResource {
 	@Api(order=150)
 	@Path("/{emailAddressId}/verified")
 	@GET
-	public boolean getVerified(@PathParam("emailAddressId") Long emailAddressId) {
+	public boolean isEmailAddressVerified(@PathParam("emailAddressId") Long emailAddressId) {
 		EmailAddress emailAddress = emailAddressManager.load(emailAddressId);
     	if (!SecurityUtils.isAdministrator() && !emailAddress.getOwner().equals(getAuthUser())) 
 			throw new UnauthorizedException();
@@ -57,7 +68,7 @@ public class EmailAddressResource {
 	
 	@Api(order=200, description="Create new email address")
 	@POST
-	public Long create(@NotNull @Valid EmailAddress emailAddress) {
+	public Long createEmailAddress(@NotNull @Valid EmailAddress emailAddress) {
 		var owner = emailAddress.getOwner();
 		if (!SecurityUtils.isAdministrator() && !owner.equals(getAuthUser()))
 			throw new UnauthorizedException();
@@ -72,9 +83,46 @@ public class EmailAddressResource {
 			emailAddress.setVerificationCode(null);
 		
 		emailAddressManager.create(emailAddress);
+
+		if (!getAuthUser().equals(owner)) 
+			auditManager.audit(null, "added email address \"" + emailAddress.getValue() + "\" for account \"" + owner.getName() + "\" via RESTful API", null, null);
 		return emailAddress.getId();
 	}
 	
+	@Api(order=220, description="Set as public email address")
+	@Path("/public")
+	@POST
+	public Long setAsPublic(@NotNull Long emailAddressId) {
+		var emailAddress = emailAddressManager.load(emailAddressId);
+		var owner = emailAddress.getOwner();
+		if (!SecurityUtils.isAdministrator() && !owner.equals(getAuthUser()))
+			throw new UnauthorizedException();
+				
+		emailAddressManager.setAsPublic(emailAddress);
+
+		if (!getAuthUser().equals(owner)) 
+			auditManager.audit(null, "set email address \"" + emailAddress.getValue() + "\" as public for account \"" + owner.getName() + "\" via RESTful API", null, null);
+		
+		return emailAddressId;
+	}
+
+	@Api(order=230, description="Set as private email address")
+	@Path("/private")
+	@POST
+	public Long setAsPrivate(@NotNull Long emailAddressId) {
+		var emailAddress = emailAddressManager.load(emailAddressId);
+		var owner = emailAddress.getOwner();
+		if (!SecurityUtils.isAdministrator() && !owner.equals(getAuthUser()))
+			throw new UnauthorizedException();
+		
+		emailAddressManager.setAsPrivate(emailAddress);
+
+		if (!getAuthUser().equals(owner)) 
+			auditManager.audit(null, "set email address \"" + emailAddress.getValue() + "\" as private for account \"" + owner.getName() + "\" via RESTful API", null, null);
+		
+		return emailAddressId;
+	}
+
 	@Api(order=250, description="Set as primary email address")
 	@Path("/primary")
 	@POST
@@ -88,6 +136,9 @@ public class EmailAddressResource {
 			throw new ExplicitException("Can not set primary email address for externally authenticated user");
 		
 		emailAddressManager.setAsPrimary(emailAddress);
+
+		if (!getAuthUser().equals(owner)) 
+			auditManager.audit(null, "set email address \"" + emailAddress.getValue() + "\" as primary for account \"" + owner.getName() + "\" via RESTful API", null, null);
 		
 		return emailAddressId;
 	}
@@ -102,6 +153,9 @@ public class EmailAddressResource {
 		
 		emailAddressManager.useForGitOperations(emailAddress);
 		
+		if (!getAuthUser().equals(emailAddress.getOwner())) 
+			auditManager.audit(null, "specified email address \"" + emailAddress.getValue() + "\" for git operations for account \"" + emailAddress.getOwner().getName() + "\" via RESTful API", null, null);
+		
 		return emailAddressId;
 	}
 	
@@ -126,7 +180,7 @@ public class EmailAddressResource {
 	@Api(order=300)
 	@Path("/{emailAddressId}")
 	@DELETE
-	public Response delete(@PathParam("emailAddressId") Long emailAddressId) {
+	public Response deleteEmailAddress(@PathParam("emailAddressId") Long emailAddressId) {
 		var emailAddress = emailAddressManager.load(emailAddressId);
 		if (!SecurityUtils.isAdministrator() && !emailAddress.getOwner().equals(getAuthUser())) 
 			throw new UnauthorizedException();
@@ -138,6 +192,10 @@ public class EmailAddressResource {
 		if (emailAddress.getOwner().getEmailAddresses().size() == 1)
 			throw new ExplicitException("At least one email address should be present for a user");
 		emailAddressManager.delete(emailAddress);
+
+		if (!getAuthUser().equals(emailAddress.getOwner())) 
+			auditManager.audit(null, "deleted email address \"" + emailAddress.getValue() + "\" for account \"" + emailAddress.getOwner().getName() + "\" via RESTful API", null, null);
+
 		return Response.ok().build();
 	}
 	

server-core/src/main/java/io/onedev/server/rest/resource/GroupAuthorizationResource.java

@@ -15,6 +15,8 @@ import javax.ws.rs.core.Response;
 
 import org.apache.shiro.authz.UnauthorizedException;
 
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.entitymanager.GroupAuthorizationManager;
 import io.onedev.server.model.GroupAuthorization;
 import io.onedev.server.rest.annotation.Api;
@@ -29,15 +31,18 @@ public class GroupAuthorizationResource {
 
 	private final GroupAuthorizationManager authorizationManager;
 
+	private final AuditManager auditManager;
+
 	@Inject
-	public GroupAuthorizationResource(GroupAuthorizationManager authorizationManager) {
+	public GroupAuthorizationResource(GroupAuthorizationManager authorizationManager, AuditManager auditManager) {
 		this.authorizationManager = authorizationManager;
+		this.auditManager = auditManager;
 	}
 
 	@Api(order=100, description = "Get group authorization of specified id")
 	@Path("/{authorizationId}")
 	@GET
-	public GroupAuthorization get(@PathParam("authorizationId") Long authorizationId) {
+	public GroupAuthorization getAuthorization(@PathParam("authorizationId") Long authorizationId) {
 		var authorization = authorizationManager.load(authorizationId);
 		if (!SecurityUtils.canManageProject(authorization.getProject()))
 			throw new UnauthorizedException();
@@ -46,21 +51,25 @@ public class GroupAuthorizationResource {
 	
 	@Api(order=200, description="Create new group authorization")
 	@POST
-	public Long create(@NotNull GroupAuthorization authorization) {
+	public Long createAuthorization(@NotNull GroupAuthorization authorization) {
 		if (!SecurityUtils.canManageProject(authorization.getProject()))
 			throw new UnauthorizedException();
 		authorizationManager.createOrUpdate(authorization);
+		var newAuditContent = VersionedXmlDoc.fromBean(authorization).toXML();
+		auditManager.audit(authorization.getProject(), "created group authorization via RESTful API", null, newAuditContent);
 		return authorization.getId();
 	}
 
 	@Api(order=300, description = "Delete group authorization of specified id")
 	@Path("/{authorizationId}")
 	@DELETE
-	public Response delete(@PathParam("authorizationId") Long authorizationId) {
+	public Response deleteAuthorization(@PathParam("authorizationId") Long authorizationId) {
 		var authorization = authorizationManager.load(authorizationId);
 		if (!SecurityUtils.canManageProject(authorization.getProject()))
 			throw new UnauthorizedException();
 		authorizationManager.delete(authorization);
+		var oldAuditContent = VersionedXmlDoc.fromBean(authorization).toXML();
+		auditManager.audit(authorization.getProject(), "deleted group authorization via RESTful API", oldAuditContent, null);
 		return Response.ok().build();
 	}
 	

server-core/src/main/java/io/onedev/server/rest/resource/GroupResource.java

@@ -6,7 +6,15 @@ import java.util.List;
 import javax.inject.Inject;
 import javax.inject.Singleton;
 import javax.validation.constraints.NotNull;
-import javax.ws.rs.*;
+import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.GET;
+import javax.ws.rs.NotFoundException;
+import javax.ws.rs.POST;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.QueryParam;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 
@@ -14,6 +22,8 @@ import org.apache.shiro.authz.UnauthorizedException;
 import org.hibernate.criterion.MatchMode;
 import org.hibernate.criterion.Restrictions;
 
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.entitymanager.GroupManager;
 import io.onedev.server.model.Group;
 import io.onedev.server.model.GroupAuthorization;
@@ -21,7 +31,6 @@ import io.onedev.server.model.Membership;
 import io.onedev.server.persistence.dao.EntityCriteria;
 import io.onedev.server.rest.annotation.Api;
 import io.onedev.server.security.SecurityUtils;
-import io.onedev.server.util.facade.GroupFacade;
 
 @Api(order=6000)
 @Path("/groups")
@@ -32,15 +41,18 @@ public class GroupResource {
 
 	private final GroupManager groupManager;
 	
+	private final AuditManager auditManager;
+	
 	@Inject
-	public GroupResource(GroupManager groupManager) {
+	public GroupResource(GroupManager groupManager, AuditManager auditManager) {
 		this.groupManager = groupManager;
+		this.auditManager = auditManager;
 	}
 
 	@Api(order=100)
 	@Path("/{groupId}")
     @GET
-    public Group getBasicInfo(@PathParam("groupId") Long groupId) {
+    public Group getGroup(@PathParam("groupId") Long groupId) {
     	if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
     	return groupManager.load(groupId);
@@ -66,7 +78,7 @@ public class GroupResource {
 	
 	@Api(order=400)
 	@GET
-    public List<Group> queryBasicInfo(@QueryParam("name") String name, @QueryParam("offset") @Api(example="0") int offset, 
+    public List<Group> queryGroups(@QueryParam("name") String name, @QueryParam("offset") @Api(example="0") int offset, 
     		@QueryParam("count") @Api(example="100") int count) {
 		if (!SecurityUtils.isAdministrator())
 			throw new UnauthorizedException();
@@ -81,7 +93,7 @@ public class GroupResource {
 	@Api(order=450)
 	@Path("/ids/{name}")
 	@GET
-	public Long getId(@PathParam("name") @Api(description = "Group name") String name) {
+	public Long getGroupId(@PathParam("name") @Api(description = "Group name") String name) {
 		var group = groupManager.find(name);
 		if (group != null)
 			return group.getId();
@@ -91,35 +103,42 @@ public class GroupResource {
 
 	@Api(order=500, description="Create new group")
     @POST
-    public Long create(@NotNull Group group) {
+    public Long createGroup(@NotNull Group group) {
     	if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
 		
 		groupManager.create(group);
-    		
+		var newAuditContent = VersionedXmlDoc.fromBean(group).toXML();
+		auditManager.audit(null, "created group \"" + group.getName() + "\" via RESTful API", null, newAuditContent);
     	return group.getId();
     }
 
 	@Api(order=550, description="Update group of specified id")
 	@Path("/{groupId}")
 	@POST
-	public Response update(@PathParam("groupId") Long groupId, @NotNull Group group) {
+	public Response updateGroup(@PathParam("groupId") Long groupId, @NotNull Group group) {
 		if (!SecurityUtils.isAdministrator())
 			throw new UnauthorizedException();
-		if (group.getOldVersion() != null)
-			groupManager.update(group, ((GroupFacade) group.getOldVersion()).getName());
-		else
-			groupManager.update(group, null);
+		var oldName = group.getOldVersion().getRootElement().elementText(Group.PROP_NAME);
+		groupManager.update(group, oldName);
+
+		var oldAuditContent = group.getOldVersion().toXML();
+		var newAuditContent = VersionedXmlDoc.fromBean(group).toXML();
+		auditManager.audit(null, "changed group \"" + group.getName() + "\" via RESTful API", oldAuditContent, newAuditContent);
+
 		return Response.ok().build();
 	}
 	
 	@Api(order=600)
 	@Path("/{groupId}")
     @DELETE
-    public Response delete(@PathParam("groupId") Long groupId) {
+    public Response deleteGroup(@PathParam("groupId") Long groupId) {
     	if (!SecurityUtils.isAdministrator())
 			throw new UnauthorizedException();
-    	groupManager.delete(groupManager.load(groupId));
+		var group = groupManager.load(groupId);
+    	groupManager.delete(group);
+		var oldAuditContent = VersionedXmlDoc.fromBean(group).toXML();
+		auditManager.audit(null, "deleted group \"" + group.getName() + "\" via RESTful API", oldAuditContent, null);
     	return Response.ok().build();
     }
 	

server-core/src/main/java/io/onedev/server/rest/resource/IssueCommentResource.java

@@ -47,7 +47,7 @@ public class IssueCommentResource {
 	@Api(order=100)
 	@Path("/{commentId}")
 	@GET
-	public IssueComment get(@PathParam("commentId") Long commentId) {
+	public IssueComment getComment(@PathParam("commentId") Long commentId) {
 		IssueComment comment = commentManager.load(commentId);
     	if (!SecurityUtils.canAccessProject(comment.getIssue().getProject()))  
 			throw new UnauthorizedException();
@@ -56,7 +56,7 @@ public class IssueCommentResource {
 	
 	@Api(order=200, description="Create new issue comment")
 	@POST
-	public Long create(@NotNull IssueComment comment) {
+	public Long createComment(@NotNull IssueComment comment) {
 		if (!canAccessIssue(comment.getIssue()) 
 				|| !isAdministrator() && !comment.getUser().equals(getUser())) {
 			throw new UnauthorizedException();
@@ -68,7 +68,7 @@ public class IssueCommentResource {
 	@Api(order=250, description="Update issue comment of specified id")
 	@Path("/{commentId}")
 	@POST
-	public Response update(@PathParam("commentId") Long commentId, @NotNull String content) {
+	public Response updateComment(@PathParam("commentId") Long commentId, @NotNull String content) {
 		var comment = commentManager.load(commentId);
 		if (!canModifyOrDelete(comment)) 
 			throw new UnauthorizedException();
@@ -91,7 +91,7 @@ public class IssueCommentResource {
 	@Api(order=300)
 	@Path("/{commentId}")
 	@DELETE
-	public Response delete(@PathParam("commentId") Long commentId) {
+	public Response deleteComment(@PathParam("commentId") Long commentId) {
 		IssueComment comment = commentManager.load(commentId);
     	if (!canModifyOrDelete(comment)) 
 			throw new UnauthorizedException();

server-core/src/main/java/io/onedev/server/rest/resource/IssueLinkResource.java

@@ -32,7 +32,7 @@ public class IssueLinkResource {
 	@Api(order=100)
 	@Path("/{linkId}")
 	@GET
-	public IssueLink get(@PathParam("linkId") Long linkId) {
+	public IssueLink getLink(@PathParam("linkId") Long linkId) {
 		var link = linkManager.load(linkId);
 		if (!canAccessIssue(link.getTarget()) && !canAccessIssue(link.getSource()))
 			throw new UnauthorizedException();
@@ -41,7 +41,7 @@ public class IssueLinkResource {
 	
 	@Api(order=200, description="Create new issue link")
 	@POST
-	public Long create(@NotNull IssueLink link) {
+	public Long createLink(@NotNull IssueLink link) {
 		if (!canEditIssueLink(link.getSource().getProject(), link.getSpec())
 				&& !canEditIssueLink(link.getTarget().getProject(), link.getSpec())) {
 			throw new UnauthorizedException();
@@ -76,7 +76,7 @@ public class IssueLinkResource {
 	@Api(order=300)
 	@Path("/{linkId}")
 	@DELETE
-	public Response delete(@PathParam("linkId") Long linkId) {
+	public Response deleteLink(@PathParam("linkId") Long linkId) {
 		var link = linkManager.load(linkId);
 		if (!canEditIssueLink(link.getSource().getProject(), link.getSpec()) 
 				&& !canEditIssueLink(link.getTarget().getProject(), link.getSpec())) {

server-core/src/main/java/io/onedev/server/rest/resource/IssueResource.java

@@ -1,10 +1,57 @@
 package io.onedev.server.rest.resource;
 
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.inject.Inject;
+import javax.inject.Singleton;
+import javax.validation.Valid;
+import javax.validation.constraints.NotEmpty;
+import javax.validation.constraints.NotNull;
+import javax.ws.rs.BadRequestException;
+import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.GET;
+import javax.ws.rs.POST;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.QueryParam;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+
+import org.apache.shiro.authz.UnauthorizedException;
+
 import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.ObjectMapper;
+
 import io.onedev.server.OneDev;
-import io.onedev.server.entitymanager.*;
-import io.onedev.server.model.*;
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
+import io.onedev.server.entitymanager.IssueChangeManager;
+import io.onedev.server.entitymanager.IssueManager;
+import io.onedev.server.entitymanager.IterationManager;
+import io.onedev.server.entitymanager.ProjectManager;
+import io.onedev.server.entitymanager.SettingManager;
+import io.onedev.server.model.Issue;
+import io.onedev.server.model.IssueChange;
+import io.onedev.server.model.IssueComment;
+import io.onedev.server.model.IssueLink;
+import io.onedev.server.model.IssueSchedule;
+import io.onedev.server.model.IssueVote;
+import io.onedev.server.model.IssueWatch;
+import io.onedev.server.model.IssueWork;
+import io.onedev.server.model.Iteration;
+import io.onedev.server.model.Project;
+import io.onedev.server.model.PullRequest;
+import io.onedev.server.model.User;
 import io.onedev.server.model.support.issue.transitionspec.ManualSpec;
 import io.onedev.server.rest.InvalidParamException;
 import io.onedev.server.rest.annotation.Api;
@@ -16,18 +63,6 @@ import io.onedev.server.security.SecurityUtils;
 import io.onedev.server.util.ProjectScopedCommit;
 import io.onedev.server.web.page.help.ApiHelpUtils;
 import io.onedev.server.web.page.help.ValueInfo;
-import org.apache.shiro.authz.UnauthorizedException;
-
-import javax.inject.Inject;
-import javax.inject.Singleton;
-import javax.validation.Valid;
-import javax.validation.constraints.NotEmpty;
-import javax.validation.constraints.NotNull;
-import javax.ws.rs.*;
-import javax.ws.rs.core.MediaType;
-import javax.ws.rs.core.Response;
-import java.io.Serializable;
-import java.util.*;
 
 @Api(order=2000, description="In most cases, issue resource is operated with issue id, which is different from issue number. "
 		+ "To get issue id of a particular issue number, use the <a href='/~help/api/io.onedev.server.rest.IssueResource/queryBasicInfo'>Query Basic Info</a> operation with query for "
@@ -49,23 +84,26 @@ public class IssueResource {
 	private final ProjectManager projectManager;
 	
 	private final ObjectMapper objectMapper;
+
+	private final AuditManager auditManager;
 	
 	@Inject
 	public IssueResource(SettingManager settingManager, IssueManager issueManager, 
 						 IssueChangeManager issueChangeManager, IterationManager iterationManager, 
-						 ProjectManager projectManager, ObjectMapper objectMapper) {
+						 ProjectManager projectManager, ObjectMapper objectMapper, AuditManager auditManager) {
 		this.settingManager = settingManager;
 		this.issueManager = issueManager;
 		this.issueChangeManager = issueChangeManager;
 		this.iterationManager = iterationManager;
 		this.projectManager = projectManager;
 		this.objectMapper = objectMapper;
+		this.auditManager = auditManager;
 	}
 
 	@Api(order=100)
 	@Path("/{issueId}")
     @GET
-    public Issue getBasicInfo(@PathParam("issueId") Long issueId) {
+    public Issue getIssue(@PathParam("issueId") Long issueId) {
 		Issue issue = issueManager.load(issueId);
     	if (!SecurityUtils.canAccessIssue(issue)) 
 			throw new UnauthorizedException();
@@ -196,7 +234,7 @@ public class IssueResource {
 	
 	@Api(order=900, exampleProvider = "getIssuesExample")
 	@GET
-    public List<Map<String, Object>> query(
+    public List<Map<String, Object>> queryIssues(
     		@QueryParam("query") @Api(description="Syntax of this query is the same as in <a href='/~issues'>issues page</a>", example="\"State\" is \"Open\"") String query,
 			@QueryParam("withFields") @Api(description = "Whether or not to include issue fields. Default to false", example="true") Boolean withFields, 
     		@QueryParam("offset") @Api(example="0") int offset, 
@@ -235,7 +273,7 @@ public class IssueResource {
 	
 	@Api(order=1000)
     @POST
-    public Long create(@NotNull @Valid IssueOpenData data) {
+    public Long createIssue(@NotNull @Valid IssueOpenData data) {
     	User user = SecurityUtils.getUser();
     	
     	Project project = projectManager.load(data.getProjectId());
@@ -384,11 +422,13 @@ public class IssueResource {
 	@Api(order=1600)
 	@Path("/{issueId}")
     @DELETE
-    public Response delete(@PathParam("issueId") Long issueId) {
+    public Response deleteIssue(@PathParam("issueId") Long issueId) {
     	Issue issue = issueManager.load(issueId);
     	if (!SecurityUtils.canManageIssues(issue.getProject()))
 			throw new UnauthorizedException();
-    	issueManager.delete(issue);
+		issueManager.delete(issue);
+		var oldAuditContent = VersionedXmlDoc.fromBean(issue).toXML();
+		auditManager.audit(issue.getProject(), "deleted issue \"" + issue.getReference().toString(issue.getProject()) + "\" via RESTful API", oldAuditContent, null);
     	return Response.ok().build();
     }
 

server-core/src/main/java/io/onedev/server/rest/resource/IssueVoteResource.java

@@ -32,7 +32,7 @@ public class IssueVoteResource {
 	@Api(order=100)
 	@Path("/{voteId}")
 	@GET
-	public IssueVote get(@PathParam("voteId") Long voteId) {
+	public IssueVote getVote(@PathParam("voteId") Long voteId) {
 		IssueVote vote = voteManager.load(voteId);
 		if (!SecurityUtils.canAccessIssue(vote.getIssue()))
 			throw new UnauthorizedException();
@@ -41,7 +41,7 @@ public class IssueVoteResource {
 	
 	@Api(order=200, description="Create new issue vote")
 	@POST
-	public Long create(@NotNull IssueVote vote) {
+	public Long createVote(@NotNull IssueVote vote) {
 		if (!SecurityUtils.canAccessIssue(vote.getIssue())
 				|| !SecurityUtils.isAdministrator() && !vote.getUser().equals(SecurityUtils.getAuthUser())) {
 			throw new UnauthorizedException();
@@ -53,7 +53,7 @@ public class IssueVoteResource {
 	@Api(order=300)
 	@Path("/{voteId}")
 	@DELETE
-	public Response delete(@PathParam("voteId") Long voteId) {
+	public Response deleteVote(@PathParam("voteId") Long voteId) {
 		IssueVote vote = voteManager.load(voteId);
 		if (!canModifyOrDelete(vote)) 
 			throw new UnauthorizedException();

server-core/src/main/java/io/onedev/server/rest/resource/IssueWatchResource.java

@@ -32,7 +32,7 @@ public class IssueWatchResource {
 	@Api(order=100)
 	@Path("/{watchId}")
 	@GET
-	public IssueWatch get(@PathParam("watchId") Long watchId) {
+	public IssueWatch getWatch(@PathParam("watchId") Long watchId) {
 		IssueWatch watch = watchManager.load(watchId);
 		if (!SecurityUtils.canAccessIssue(watch.getIssue()))
 			throw new UnauthorizedException();
@@ -41,7 +41,7 @@ public class IssueWatchResource {
 	
 	@Api(order=200, description="Create new issue watch")
 	@POST
-	public Long create(@NotNull IssueWatch watch) {
+	public Long createWatch(@NotNull IssueWatch watch) {
 		if (!SecurityUtils.canAccessIssue(watch.getIssue())
 				|| !SecurityUtils.isAdministrator() && !watch.getUser().equals(SecurityUtils.getAuthUser())) {
 			throw new UnauthorizedException();
@@ -53,7 +53,7 @@ public class IssueWatchResource {
 	@Api(order=250, description="Update issue watch of specified id")
 	@Path("/{watchId}")
 	@POST
-	public Response update(@PathParam("watchId") Long watchId, @NotNull IssueWatch watch) {
+	public Response updateWatch(@PathParam("watchId") Long watchId, @NotNull IssueWatch watch) {
 		if (!canModifyOrDelete(watch)) 
 			throw new UnauthorizedException();
 		watchManager.createOrUpdate(watch);
@@ -63,7 +63,7 @@ public class IssueWatchResource {
 	@Api(order=300)
 	@Path("/{watchId}")
 	@DELETE
-	public Response delete(@PathParam("watchId") Long watchId) {
+	public Response deleteWatch(@PathParam("watchId") Long watchId) {
 		IssueWatch watch = watchManager.load(watchId);
 		if (!canModifyOrDelete(watch)) 
 			throw new UnauthorizedException();

server-core/src/main/java/io/onedev/server/rest/resource/IssueWorkResource.java

@@ -43,7 +43,7 @@ public class IssueWorkResource {
 	@Api(order=100)
 	@Path("/{workId}")
 	@GET
-	public IssueWork get(@PathParam("workId") Long workId) {
+	public IssueWork getWork(@PathParam("workId") Long workId) {
 		if (!subscriptionManager.isSubscriptionActive())
 			throw new UnsupportedOperationException("This feature requires an active subscription");
 		IssueWork work = workManager.load(workId);
@@ -54,7 +54,7 @@ public class IssueWorkResource {
 	
 	@Api(order=200, description="Log new issue work")
 	@POST
-	public Long create(@NotNull IssueWork work) {
+	public Long createWork(@NotNull IssueWork work) {
 		if (!subscriptionManager.isSubscriptionActive()) 
 			throw new UnsupportedOperationException("This feature requires an active subscription");
 		if (!work.getIssue().getProject().isTimeTracking())
@@ -72,7 +72,7 @@ public class IssueWorkResource {
 	@Api(order=250, description="Update issue work of specified id")
 	@Path("/{workId}")
 	@POST
-	public Response update(@PathParam("workId") Long workId, @NotNull IssueWork work) {
+	public Response updateWork(@PathParam("workId") Long workId, @NotNull IssueWork work) {
 		if (!canModifyOrDelete(work)) 
 			throw new UnauthorizedException();
 		
@@ -84,7 +84,7 @@ public class IssueWorkResource {
 	@Api(order=300)
 	@Path("/{workId}")
 	@DELETE
-	public Response delete(@PathParam("workId") Long workId) {
+	public Response deleteWork(@PathParam("workId") Long workId) {
 		var work = workManager.load(workId);
 		if (!canModifyOrDelete(work)) 
 			throw new UnauthorizedException();

server-core/src/main/java/io/onedev/server/rest/resource/IterationResource.java

@@ -15,6 +15,8 @@ import javax.ws.rs.core.Response;
 
 import org.apache.shiro.authz.UnauthorizedException;
 
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.entitymanager.IterationManager;
 import io.onedev.server.model.Iteration;
 import io.onedev.server.rest.annotation.Api;
@@ -29,15 +31,18 @@ public class IterationResource {
 
 	private final IterationManager iterationManager;
 
+	private final AuditManager auditManager;
+
 	@Inject
-	public IterationResource(IterationManager iterationManager) {
+	public IterationResource(IterationManager iterationManager, AuditManager auditManager) {
 		this.iterationManager = iterationManager;
+		this.auditManager = auditManager;
 	}
 
 	@Api(order=100)
 	@Path("/{iterationId}")
 	@GET
-	public Iteration get(@PathParam("iterationId") Long iterationId) {
+	public Iteration getIteration(@PathParam("iterationId") Long iterationId) {
 		Iteration iteration = iterationManager.load(iterationId);
 		if (!SecurityUtils.canAccessProject(iteration.getProject()))
 			throw new UnauthorizedException();
@@ -46,31 +51,38 @@ public class IterationResource {
 	
 	@Api(order=200, description="Create new iteration")
 	@POST
-	public Long create(@NotNull Iteration iteration) {
+	public Long createIteration(@NotNull Iteration iteration) {
 		if (!SecurityUtils.canManageIssues(iteration.getProject()))
 			throw new UnauthorizedException();
 		iterationManager.createOrUpdate(iteration);
+		var newAuditContent = VersionedXmlDoc.fromBean(iteration).toXML();
+		auditManager.audit(iteration.getProject(), "created iteration \"" + iteration.getName() + "\" via RESTful API", null, newAuditContent);
 		return iteration.getId();
 	}
 
 	@Api(order=250, description="Update iteration of specified id")
 	@Path("/{iterationId}")
 	@POST
-	public Long update(@PathParam("iterationId") Long iterationId, @NotNull Iteration iteration) {
+	public Long updateIteration(@PathParam("iterationId") Long iterationId, @NotNull Iteration iteration) {
 		if (!SecurityUtils.canManageIssues(iteration.getProject()))
 			throw new UnauthorizedException();
 		iterationManager.createOrUpdate(iteration);
+		var oldAuditContent = iteration.getOldVersion().toXML();
+		var newAuditContent = VersionedXmlDoc.fromBean(iteration).toXML();
+		auditManager.audit(iteration.getProject(), "changed iteration \"" + iteration.getName() + "\" via RESTful API", oldAuditContent, newAuditContent);
 		return iteration.getId();
 	}
 	
 	@Api(order=300)
 	@Path("/{iterationId}")
 	@DELETE
-	public Response delete(@PathParam("iterationId") Long iterationId) {
+	public Response deleteIteration(@PathParam("iterationId") Long iterationId) {
 		Iteration iteration = iterationManager.load(iterationId);
 		if (!SecurityUtils.canManageIssues(iteration.getProject()))
 			throw new UnauthorizedException();
 		iterationManager.delete(iteration);
+		var oldAuditContent = VersionedXmlDoc.fromBean(iteration).toXML();
+		auditManager.audit(iteration.getProject(), "deleted iteration \"" + iteration.getName() + "\" via RESTful API", oldAuditContent, null);
 		return Response.ok().build();
 	}
 	

server-core/src/main/java/io/onedev/server/rest/resource/LabelSpecResource.java

@@ -1,21 +1,32 @@
 package io.onedev.server.rest.resource;
 
+import java.util.List;
+
+import javax.inject.Inject;
+import javax.inject.Singleton;
+import javax.validation.constraints.NotNull;
+import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.GET;
+import javax.ws.rs.POST;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.QueryParam;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+
+import org.apache.shiro.authz.UnauthorizedException;
+import org.hibernate.criterion.MatchMode;
+import org.hibernate.criterion.Restrictions;
+
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.entitymanager.LabelSpecManager;
 import io.onedev.server.model.LabelSpec;
 import io.onedev.server.persistence.dao.EntityCriteria;
 import io.onedev.server.rest.annotation.Api;
 import io.onedev.server.security.SecurityUtils;
-import org.apache.shiro.authz.UnauthorizedException;
-import org.hibernate.criterion.MatchMode;
-import org.hibernate.criterion.Restrictions;
-
-import javax.inject.Inject;
-import javax.inject.Singleton;
-import javax.validation.constraints.NotNull;
-import javax.ws.rs.*;
-import javax.ws.rs.core.MediaType;
-import javax.ws.rs.core.Response;
-import java.util.List;
 
 @Api(order=10200)
 @Path("/label-specs")
@@ -26,15 +37,18 @@ public class LabelSpecResource {
 
 	private final LabelSpecManager labelSpecManager;
 	
+	private final AuditManager auditManager;
+	
 	@Inject
-	public LabelSpecResource(LabelSpecManager labelSpecManager) {
+	public LabelSpecResource(LabelSpecManager labelSpecManager, AuditManager auditManager) {
 		this.labelSpecManager = labelSpecManager;
+		this.auditManager = auditManager;
 	}
 
 	@Api(order=100)
 	@Path("/{labelSpecId}")
     @GET
-    public LabelSpec get(@PathParam("labelSpecId") Long labelSpecId) {
+    public LabelSpec getSpec(@PathParam("labelSpecId") Long labelSpecId) {
     	if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
     	return labelSpecManager.load(labelSpecId);
@@ -42,7 +56,7 @@ public class LabelSpecResource {
 	
 	@Api(order=400)
 	@GET
-    public List<LabelSpec> query(@QueryParam("name") String name, 
+    public List<LabelSpec> querySpecs(@QueryParam("name") String name, 
 								 @QueryParam("offset") @Api(example="0") int offset, 
 								 @QueryParam("count") @Api(example="100") int count) {
 		if (!SecurityUtils.isAdministrator())
@@ -57,31 +71,39 @@ public class LabelSpecResource {
 	
 	@Api(order=500, description="Create new label spec")
     @POST
-    public Long create(@NotNull LabelSpec labelSpec) {
+    public Long createSpec(@NotNull LabelSpec labelSpec) {
     	if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
 		
 		labelSpecManager.createOrUpdate(labelSpec);
+		var newAuditContent = VersionedXmlDoc.fromBean(labelSpec).toXML();
+		auditManager.audit(null, "created label spec \"" + labelSpec.getName() + "\" via RESTful API", null, newAuditContent);
     	return labelSpec.getId();
     }
 
 	@Api(order=550, description="Update label spec of specified id")
 	@Path("/{labelSpecId}")
 	@POST
-	public Response update(@PathParam("labelSpecId") Long labelSpecId, @NotNull LabelSpec labelSpec) {
+	public Response updateSpec(@PathParam("labelSpecId") Long labelSpecId, @NotNull LabelSpec labelSpec) {
 		if (!SecurityUtils.isAdministrator())
 			throw new UnauthorizedException();
 		labelSpecManager.createOrUpdate(labelSpec);
+		var oldAuditContent = labelSpec.getOldVersion().toXML();
+		var newAuditContent = VersionedXmlDoc.fromBean(labelSpec).toXML();
+		auditManager.audit(null, "changed label spec \"" + labelSpec.getName() + "\" via RESTful API", oldAuditContent, newAuditContent);
 		return Response.ok().build();
 	}
 	
 	@Api(order=600)
 	@Path("/{labelSpecId}")
     @DELETE
-    public Response delete(@PathParam("labelSpecId") Long labelSpecId) {
+    public Response deleteSpec(@PathParam("labelSpecId") Long labelSpecId) {
     	if (!SecurityUtils.isAdministrator())
 			throw new UnauthorizedException();
-    	labelSpecManager.delete(labelSpecManager.load(labelSpecId));
+		var labelSpec = labelSpecManager.load(labelSpecId);
+    	labelSpecManager.delete(labelSpec);
+		var oldAuditContent = VersionedXmlDoc.fromBean(labelSpec).toXML();
+		auditManager.audit(null, "deleted label spec \"" + labelSpec.getName() + "\" via RESTful API", oldAuditContent, null);
     	return Response.ok().build();
     }
 	

server-core/src/main/java/io/onedev/server/rest/resource/MembershipResource.java

@@ -15,6 +15,8 @@ import javax.ws.rs.core.Response;
 
 import org.apache.shiro.authz.UnauthorizedException;
 
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.entitymanager.MembershipManager;
 import io.onedev.server.model.Membership;
 import io.onedev.server.rest.annotation.Api;
@@ -29,15 +31,18 @@ public class MembershipResource {
 
 	private final MembershipManager membershipManager;
 
+	private final AuditManager auditManager;
+
 	@Inject
-	public MembershipResource(MembershipManager membershipManager) {
+	public MembershipResource(MembershipManager membershipManager, AuditManager auditManager) {
 		this.membershipManager = membershipManager;
+		this.auditManager = auditManager;
 	}
 
 	@Api(order=100)
 	@Path("/{membershipId}")
 	@GET
-	public Membership get(@PathParam("membershipId") Long membershipId) {
+	public Membership getMembership(@PathParam("membershipId") Long membershipId) {
 		if (!SecurityUtils.isAdministrator())
 			throw new UnauthorizedException();
 		return membershipManager.load(membershipId);
@@ -45,20 +50,25 @@ public class MembershipResource {
 	
 	@Api(order=200, description="Create new membership")
 	@POST
-	public Long create(@NotNull Membership membership) {
+	public Long createMembership(@NotNull Membership membership) {
 		if (!SecurityUtils.isAdministrator())
 			throw new UnauthorizedException();
 		membershipManager.create(membership);
+		var newAuditContent = VersionedXmlDoc.fromBean(membership).toXML();
+		auditManager.audit(null, "created membership via RESTful API", null, newAuditContent);
 		return membership.getId();
 	}
 	
 	@Api(order=300)
 	@Path("/{membershipId}")
 	@DELETE
-	public Response delete(@PathParam("membershipId") Long membershipId) {
+	public Response deleteMembership(@PathParam("membershipId") Long membershipId) {
 		if (!SecurityUtils.isAdministrator())
 			throw new UnauthorizedException();
-		membershipManager.delete(membershipManager.load(membershipId));
+		var membership = membershipManager.load(membershipId);
+		membershipManager.delete(membership);
+		var oldAuditContent = VersionedXmlDoc.fromBean(membership).toXML();
+		auditManager.audit(null, "deleted membership via RESTful API", oldAuditContent, null);
 		return Response.ok().build();
 	}
 	

server-core/src/main/java/io/onedev/server/rest/resource/PackLabelResource.java

@@ -29,7 +29,7 @@ public class PackLabelResource {
 	
 	@Api(order=200, description="Create package label")
 	@POST
-	public Long create(@NotNull PackLabel packLabel) {
+	public Long createLabel(@NotNull PackLabel packLabel) {
 		if (!SecurityUtils.canWritePack(packLabel.getPack().getProject()))
 			throw new UnauthorizedException();
 		packLabelManager.create(packLabel);
@@ -39,7 +39,7 @@ public class PackLabelResource {
 	@Api(order=300)
 	@Path("/{packLabelId}")
 	@DELETE
-	public Response delete(@PathParam("packLabelId") Long packLabelId) {
+	public Response deleteLabel(@PathParam("packLabelId") Long packLabelId) {
 		PackLabel buildLabel = packLabelManager.load(packLabelId);
 		if (!SecurityUtils.canWritePack(buildLabel.getPack().getProject()))
 			throw new UnauthorizedException();

server-core/src/main/java/io/onedev/server/rest/resource/PackResource.java

@@ -1,5 +1,26 @@
 package io.onedev.server.rest.resource;
 
+import static java.util.stream.Collectors.toList;
+
+import java.util.Collection;
+import java.util.List;
+
+import javax.inject.Inject;
+import javax.inject.Singleton;
+import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.GET;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.QueryParam;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+
+import org.apache.shiro.authz.UnauthorizedException;
+
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.entitymanager.PackManager;
 import io.onedev.server.model.Pack;
 import io.onedev.server.model.PackBlob;
@@ -10,17 +31,6 @@ import io.onedev.server.rest.annotation.Api;
 import io.onedev.server.rest.resource.support.RestConstants;
 import io.onedev.server.search.entity.pack.PackQuery;
 import io.onedev.server.security.SecurityUtils;
-import org.apache.shiro.authz.UnauthorizedException;
-
-import javax.inject.Inject;
-import javax.inject.Singleton;
-import javax.ws.rs.*;
-import javax.ws.rs.core.MediaType;
-import javax.ws.rs.core.Response;
-import java.util.Collection;
-import java.util.List;
-
-import static java.util.stream.Collectors.toList;
 
 @Api(order=4300, name="Package")
 @Path("/packages")
@@ -31,15 +41,18 @@ public class PackResource {
 
 	private final PackManager packManager;
 	
+	private final AuditManager auditManager;
+	
 	@Inject
-	public PackResource(PackManager packManager) {
+	public PackResource(PackManager packManager, AuditManager auditManager) {
 		this.packManager = packManager;
+		this.auditManager = auditManager;
 	}
 
 	@Api(order=100)
 	@Path("/{packId}")
     @GET
-    public Pack getBasicInfo(@PathParam("packId") Long packId) {
+    public Pack getPack(@PathParam("packId") Long packId) {
 		Pack pack = packManager.load(packId);
     	if (!SecurityUtils.canReadPack(pack.getProject())) 
 			throw new UnauthorizedException();
@@ -68,7 +81,7 @@ public class PackResource {
 	
 	@Api(order=600)
 	@GET
-    public List<Pack> queryBasicInfo(
+    public List<Pack> queryPacks(
     		@QueryParam("query") @Api(description="Syntax of this query is the same as in <a href='/~packages'>packages page</a>", example="\"Type\" is \"Container Image\"") String query, 
     		@QueryParam("offset") @Api(example="0") int offset, 
     		@QueryParam("count") @Api(example="100") int count) {
@@ -89,11 +102,13 @@ public class PackResource {
 	@Api(order=700)
 	@Path("/{packId}")
     @DELETE
-    public Response delete(@PathParam("packId") Long packId) {
+    public Response deletePack(@PathParam("packId") Long packId) {
     	Pack pack = packManager.load(packId);
     	if (!SecurityUtils.canWritePack(pack.getProject()))
 			throw new UnauthorizedException();
     	packManager.delete(pack);
+		var oldAuditContent = VersionedXmlDoc.fromBean(pack).toXML();
+		auditManager.audit(pack.getProject(), "deleted package \"" + pack.getReference(false) + "\" via RESTful API", oldAuditContent, null);
     	return Response.ok().build();
     }
 	

server-core/src/main/java/io/onedev/server/rest/resource/ProjectLabelResource.java

@@ -1,18 +1,25 @@
 package io.onedev.server.rest.resource;
 
-import io.onedev.server.entitymanager.ProjectLabelManager;
-import io.onedev.server.model.ProjectLabel;
-import io.onedev.server.rest.annotation.Api;
-import io.onedev.server.security.SecurityUtils;
-import org.apache.shiro.authz.UnauthorizedException;
-
 import javax.inject.Inject;
 import javax.inject.Singleton;
 import javax.validation.constraints.NotNull;
-import javax.ws.rs.*;
+import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.POST;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 
+import org.apache.shiro.authz.UnauthorizedException;
+
+import io.onedev.server.entitymanager.AuditManager;
+import io.onedev.server.entitymanager.ProjectLabelManager;
+import io.onedev.server.model.ProjectLabel;
+import io.onedev.server.rest.annotation.Api;
+import io.onedev.server.security.SecurityUtils;
+
 @Api(order=10300)
 @Path("/project-labels")
 @Consumes(MediaType.APPLICATION_JSON)
@@ -22,28 +29,33 @@ public class ProjectLabelResource {
 
 	private final ProjectLabelManager projectLabelManager;
 
+	private final AuditManager auditManager;
+
 	@Inject
-	public ProjectLabelResource(ProjectLabelManager projectLabelManager) {
+	public ProjectLabelResource(ProjectLabelManager projectLabelManager, AuditManager auditManager) {
 		this.projectLabelManager = projectLabelManager;
+		this.auditManager = auditManager;
 	}
 	
-	@Api(order=200, description="Create project label")
+	@Api(order=200, description="Add project label")
 	@POST
-	public Long create(@NotNull ProjectLabel projectLabel) {
+	public Long addLabel(@NotNull ProjectLabel projectLabel) {
 		if (!SecurityUtils.canManageProject(projectLabel.getProject()))
 			throw new UnauthorizedException();
 		projectLabelManager.create(projectLabel);
+		auditManager.audit(projectLabel.getProject(), "added label \"" + projectLabel.getSpec().getName() + "\" via RESTful API", null, null);
 		return projectLabel.getId();
 	}
 	
 	@Api(order=300)
 	@Path("/{projectLabelId}")
 	@DELETE
-	public Response delete(@PathParam("projectLabelId") Long projectLabelId) {
+	public Response removeLabel(@PathParam("projectLabelId") Long projectLabelId) {
 		ProjectLabel projectLabel = projectLabelManager.load(projectLabelId);
 		if (!SecurityUtils.canManageProject(projectLabel.getProject()))
 			throw new UnauthorizedException();
 		projectLabelManager.delete(projectLabel);
+		auditManager.audit(projectLabel.getProject(), "removed label \"" + projectLabel.getSpec().getName() + "\" via RESTful API", null, null);
 		return Response.ok().build();
 	}
 	

server-core/src/main/java/io/onedev/server/rest/resource/ProjectResource.java

@@ -12,6 +12,7 @@ import java.util.Date;
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Objects;
+import java.util.stream.Collectors;
 
 import javax.annotation.Nullable;
 import javax.inject.Inject;
@@ -33,7 +34,11 @@ import javax.ws.rs.core.Response;
 import org.apache.shiro.authz.UnauthorizedException;
 import org.hibernate.criterion.Restrictions;
 
+import com.fasterxml.jackson.annotation.JsonProperty;
+
 import io.onedev.commons.utils.ExplicitException;
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.entitymanager.IterationManager;
 import io.onedev.server.entitymanager.ProjectManager;
 import io.onedev.server.git.GitContribution;
@@ -44,11 +49,13 @@ import io.onedev.server.model.Iteration;
 import io.onedev.server.model.Project;
 import io.onedev.server.model.ProjectLabel;
 import io.onedev.server.model.UserAuthorization;
+import io.onedev.server.model.support.CodeAnalysisSetting;
 import io.onedev.server.model.support.NamedCodeCommentQuery;
 import io.onedev.server.model.support.NamedCommitQuery;
 import io.onedev.server.model.support.WebHook;
 import io.onedev.server.model.support.build.ProjectBuildSetting;
 import io.onedev.server.model.support.code.BranchProtection;
+import io.onedev.server.model.support.code.GitPackConfig;
 import io.onedev.server.model.support.code.TagProtection;
 import io.onedev.server.model.support.issue.ProjectIssueSetting;
 import io.onedev.server.model.support.pack.ProjectPackSetting;
@@ -56,11 +63,11 @@ import io.onedev.server.model.support.pullrequest.ProjectPullRequestSetting;
 import io.onedev.server.persistence.dao.EntityCriteria;
 import io.onedev.server.rest.InvalidParamException;
 import io.onedev.server.rest.annotation.Api;
+import io.onedev.server.rest.annotation.EntityCreate;
 import io.onedev.server.rest.resource.support.RestConstants;
 import io.onedev.server.search.entity.project.ProjectQuery;
 import io.onedev.server.security.SecurityUtils;
 import io.onedev.server.util.DateUtils;
-import io.onedev.server.util.facade.ProjectFacade;
 import io.onedev.server.web.UrlManager;
 import io.onedev.server.web.page.project.setting.ContributedProjectSetting;
 import io.onedev.server.xodus.CommitInfoManager;
@@ -79,24 +86,27 @@ public class ProjectResource {
 	private final CommitInfoManager commitInfoManager;
 	
 	private final UrlManager urlManager;
+
+	private final AuditManager auditManager;
 	
 	@Inject
 	public ProjectResource(ProjectManager projectManager, IterationManager iterationManager, 
-			CommitInfoManager commitInfoManager, UrlManager urlManager) {
+			CommitInfoManager commitInfoManager, UrlManager urlManager, AuditManager auditManager) {
 		this.projectManager = projectManager;
 		this.iterationManager = iterationManager;
 		this.commitInfoManager = commitInfoManager;
 		this.urlManager = urlManager;
+		this.auditManager = auditManager;
 	}
 	
 	@Api(order=100)
 	@Path("/{projectId}")
     @GET
-    public Project getBasicInfo(@PathParam("projectId") Long projectId) {
+    public ProjectData getProject(@PathParam("projectId") Long projectId) {
     	Project project = projectManager.load(projectId);
     	if (!SecurityUtils.canAccessProject(project))
 			throw new UnauthorizedException();
-    	return project;
+     	return ProjectData.from(project);
     }
 	
 	@Api(order=150)
@@ -121,18 +131,7 @@ public class ProjectResource {
     	Project project = projectManager.load(projectId);
     	if (!SecurityUtils.canManageProject(project)) 
 			throw new UnauthorizedException();
-		ProjectSetting setting = new ProjectSetting();
-		setting.branchProtections = project.getBranchProtections();
-		setting.tagProtections = project.getTagProtections();
-		setting.buildSetting = project.getBuildSetting();
-		setting.packSetting = project.getPackSetting();
-		setting.issueSetting = project.getIssueSetting();
-		setting.namedCodeCommentQueries = project.getNamedCodeCommentQueries();
-		setting.namedCommitQueries = project.getNamedCommitQueries();
-		setting.pullRequestSetting = project.getPullRequestSetting();
-		setting.webHooks = project.getWebHooks();
-		setting.contributedSettings.addAll(project.getContributedSettings().values());
-		return setting;
+		return ProjectSetting.from(project);
     }
 	
 	@Api(order=300)
@@ -187,7 +186,7 @@ public class ProjectResource {
 	
 	@Api(order=700)
 	@GET
-    public List<Project> queryBasicInfo(
+    public List<ProjectData> queryProjects(
     		@QueryParam("query") @Api(description="Syntax of this query is the same as in <a href='/~projects'>projects page</a>", example="\"Name\" is \"projectName\"") String query, 
     		@QueryParam("offset") @Api(example="0") int offset, 
     		@QueryParam("count") @Api(example="100") int count) {
@@ -202,7 +201,9 @@ public class ProjectResource {
 			throw new InvalidParamException("Error parsing query", e);
 		}
     	
-    	return projectManager.query(parsedQuery, false, offset, count);
+    	return projectManager.query(parsedQuery, false, offset, count).stream()
+    			.map(ProjectData::from)
+    			.collect(Collectors.toList());
     }
 	
 	@Api(order=750)
@@ -268,31 +269,34 @@ public class ProjectResource {
 	
 	@Api(order=800, description="Create new project")
     @POST
-    public Long create(@NotNull @Valid Project project) {
-		Project parent = project.getParent();
+    public Long createProject(@NotNull @Valid ProjectData data) {
+		var project = new Project();
+		data.populate(project, projectManager);
 		
-		checkProjectCreationPermission(parent);
+		checkProjectCreationPermission(project.getParent());
 	
-		if (parent != null && project.isSelfOrAncestorOf(parent)) 
+		if (project.getParent() != null && project.isSelfOrAncestorOf(project.getParent())) 
 			throw new ExplicitException("Can not use current or descendant project as parent");
 		
-		checkProjectNameDuplication(project);
-		
+		checkProjectNameDuplication(project);		
 		projectManager.create(project);
-    	
+
+		auditManager.audit(project, "created project via RESTful API", null, VersionedXmlDoc.fromBean(data).toXML());
+
     	return project.getId();
     }
 
-	@Api(order=850, description="Update projecty basic info of specified id")
+	@Api(order=850, description="Update project")
 	@Path("/{projectId}")
 	@POST
-	public Response updateBasicInfo(@PathParam("projectId") Long projectId, @NotNull @Valid Project project) {
-		Project parent = project.getParent();
-		Long oldParentId;
-		if (project.getOldVersion() != null)
-			oldParentId = ((ProjectFacade) project.getOldVersion()).getParentId();
-		else
-			oldParentId = null;
+	public Response updateProject(@PathParam("projectId") Long projectId, @NotNull @Valid ProjectData data) {
+		Project project = projectManager.load(projectId);
+		var oldAuditContent = VersionedXmlDoc.fromBean(ProjectData.from(project)).toXML();
+
+		data.populate(project, projectManager);
+		
+		Project parent = data.getParentId() != null? projectManager.load(data.getParentId()) : null;
+		Long oldParentId = Project.idOf(project.getParent());
 
 		if (!Objects.equals(oldParentId, Project.idOf(parent))) 
 			checkProjectCreationPermission(parent);
@@ -306,6 +310,8 @@ public class ProjectResource {
 			throw new UnauthorizedException();
 		} else {
 			projectManager.update(project);
+			auditManager.audit(project, "changed project via RESTful API", oldAuditContent, 
+					VersionedXmlDoc.fromBean(ProjectData.from(project)).toXML());
 		}
 
 		return Response.ok().build();
@@ -331,38 +337,33 @@ public class ProjectResource {
 		}
 	}
 	
-	@Api(order=900, description="Update project setting")
+	@Api(order=900, description="Update project settings")
 	@Path("/{projectId}/setting")
     @POST
     public Response updateSetting(@PathParam("projectId") Long projectId, @NotNull ProjectSetting setting) {
     	Project project = projectManager.load(projectId);
     	if (!SecurityUtils.canManageProject(project)) 
 			throw new UnauthorizedException();
-		project.setBranchProtections(setting.branchProtections);
-		project.setTagProtections(setting.tagProtections);
-		project.setBuildSetting(setting.buildSetting);
-		project.setPackSetting(setting.packSetting);
-		project.setIssueSetting(setting.issueSetting);
-		project.setNamedCodeCommentQueries(setting.namedCodeCommentQueries);
-		project.setNamedCommitQueries(setting.namedCommitQueries);
-		project.setPullRequestSetting(setting.pullRequestSetting);
-		project.setWebHooks(setting.webHooks);
-		var contributedSettings = new LinkedHashMap<String, ContributedProjectSetting>();
-		for (var contributedSetting: setting.getContributedSettings())
-			contributedSettings.put(contributedSetting.getClass().getName(), contributedSetting);
-		project.setContributedSettings(contributedSettings);
+		var oldAuditContent = VersionedXmlDoc.fromBean(ProjectSetting.from(project)).toXML();
+		setting.populate(project);
 		projectManager.update(project);
+		auditManager.audit(project, "changed project settings via RESTful API", oldAuditContent, VersionedXmlDoc.fromBean(setting).toXML());
+		
 		return Response.ok().build();
     }
 	
 	@Api(order=1000)
 	@Path("/{projectId}")
     @DELETE
-    public Response delete(@PathParam("projectId") Long projectId) {
+    public Response deleteProject(@PathParam("projectId") Long projectId) {
     	Project project = projectManager.load(projectId);
     	if (!SecurityUtils.canManageProject(project))
 			throw new UnauthorizedException();
     	projectManager.delete(project);
+		if (project.getParent() != null)
+			auditManager.audit(project.getParent(), "deleted child project \"" + project.getName() + "\" via RESTful API", VersionedXmlDoc.fromBean(ProjectData.from(project)).toXML(), null);
+		else
+			auditManager.audit(null, "deleted root project \"" + project.getName() + "\" via RESTful API", VersionedXmlDoc.fromBean(ProjectData.from(project)).toXML(), null);
     	return Response.ok().build();
     }
 	
@@ -391,6 +392,215 @@ public class ProjectResource {
 		}
 		
 	}
+
+	@EntityCreate(Project.class)
+	public static class ProjectData implements Serializable {
+
+		private static final long serialVersionUID = 1L;
+		
+		@Api(order = 100, description="Represents the parent project of this project. Remove this property if "
+			+ "the project is a root project when create/update the project. May be null")
+		private Long parentId;
+
+		@Api(order = 150, description="Represents the project from which this project is forked. Remove this property if "
+			+ "the project is not a fork when create/update the project. May be null")
+		private Long forkedFromId;
+
+		@Api(order = 300)
+		private String name;
+
+		@Api(order = 400, description="May be null")
+		private String key;
+
+		@JsonProperty(access = JsonProperty.Access.READ_ONLY)
+		@Api(order = 450)
+		private String path;
+
+		@Api(order = 500, description="May be null")
+		private String description;
+
+		@JsonProperty(access = JsonProperty.Access.READ_ONLY)
+		@Api(order = 550)
+		private Date createDate;
+
+		@Api(order = 600)
+		private boolean codeManagement = true;
+	
+		@Api(order = 650)
+		private boolean packManagement = true;
+		
+		@Api(order = 700)
+		private boolean issueManagement = true;
+	
+		@Api(order = 750)
+		private boolean timeTracking = false;			
+		
+		@Api(order = 800, description = "May be null")
+		private String serviceDeskEmailAddress;
+
+		@Api(order = 850)
+		private GitPackConfig gitPackConfig;
+
+		@Api(order = 900)
+		private CodeAnalysisSetting codeAnalysisSetting;
+		
+		public Long getParentId() {
+			return parentId;
+		}
+
+		public void setParentId(Long parentId) {
+			this.parentId = parentId;
+		}
+
+		public Long getForkedFromId() {
+			return forkedFromId;
+		}
+
+		public void setForkedFromId(Long forkedFromId) {
+			this.forkedFromId = forkedFromId;
+		}
+
+		@NotEmpty
+		public String getName() {
+			return name;
+		}
+
+		public void setName(String name) {
+			this.name = name;
+		}
+
+		public String getKey() {
+			return key;
+		}
+
+		public void setKey(String key) {
+			this.key = key;
+		}
+
+		public String getPath() {
+			return path;
+		}
+
+		public void setPath(String path) {
+			this.path = path;
+		}
+
+		public String getDescription() {
+			return description;
+		}
+
+		public void setDescription(String description) {
+			this.description = description;
+		}
+
+		public Date getCreateDate() {
+			return createDate;
+		}
+
+		public void setCreateDate(Date createDate) {
+			this.createDate = createDate;
+		}
+
+		public boolean isCodeManagement() {
+			return codeManagement;
+		}
+
+		public void setCodeManagement(boolean codeManagement) {
+			this.codeManagement = codeManagement;
+		}
+
+		public boolean isPackManagement() {
+			return packManagement;
+		}
+
+		public void setPackManagement(boolean packManagement) {
+			this.packManagement = packManagement;
+		}
+
+		public boolean isIssueManagement() {
+			return issueManagement;
+		}
+
+		public void setIssueManagement(boolean issueManagement) {
+			this.issueManagement = issueManagement;
+		}
+
+		public boolean isTimeTracking() {
+			return timeTracking;
+		}
+
+		public void setTimeTracking(boolean timeTracking) {
+			this.timeTracking = timeTracking;
+		}
+
+		public String getServiceDeskEmailAddress() {
+			return serviceDeskEmailAddress;
+		}
+
+		public void setServiceDeskEmailAddress(String serviceDeskEmailAddress) {
+			this.serviceDeskEmailAddress = serviceDeskEmailAddress;
+		}
+
+		@NotNull
+		public GitPackConfig getGitPackConfig() {
+			return gitPackConfig;
+		}
+
+		public void setGitPackConfig(GitPackConfig gitPackConfig) {
+			this.gitPackConfig = gitPackConfig;
+		}
+
+		@NotNull
+		public CodeAnalysisSetting getCodeAnalysisSetting() {
+			return codeAnalysisSetting;
+		}
+
+		public void setCodeAnalysisSetting(CodeAnalysisSetting codeAnalysisSetting) {
+			this.codeAnalysisSetting = codeAnalysisSetting;
+		}
+
+		public void populate(Project project, ProjectManager projectManager) {
+			if (parentId != null)
+				project.setParent(projectManager.load(getParentId()));
+			else
+				project.setParent(null);
+			if (forkedFromId != null)
+				project.setForkedFrom(projectManager.load(getForkedFromId()));
+			else
+				project.setForkedFrom(null);
+			project.setName(getName());
+			project.setKey(getKey());
+			project.setDescription(getDescription());
+			project.setCodeManagement(isCodeManagement());
+			project.setPackManagement(isPackManagement());
+			project.setIssueManagement(isIssueManagement());
+			project.setTimeTracking(isTimeTracking());
+			project.setServiceDeskEmailAddress(getServiceDeskEmailAddress());
+			project.setGitPackConfig(getGitPackConfig());
+			project.setCodeAnalysisSetting(getCodeAnalysisSetting());
+		}
+
+		public static ProjectData from(Project project) {
+			ProjectData data = new ProjectData();
+			data.setParentId(Project.idOf(project.getParent()));
+			data.setForkedFromId(Project.idOf(project.getForkedFrom()));
+			data.setName(project.getName());
+			data.setKey(project.getKey());
+			data.setPath(project.getPath());
+			data.setDescription(project.getDescription());
+			data.setCreateDate(project.getCreateDate());
+			data.setCodeManagement(project.isCodeManagement());
+			data.setPackManagement(project.isPackManagement());
+			data.setIssueManagement(project.isIssueManagement());
+			data.setTimeTracking(project.isTimeTracking());
+			data.setServiceDeskEmailAddress(project.getServiceDeskEmailAddress());
+			data.setGitPackConfig(project.getGitPackConfig());
+			data.setCodeAnalysisSetting(project.getCodeAnalysisSetting());
+
+			return data;
+		}
+
+	}
 	
 	public static class ProjectSetting implements Serializable {
 		
@@ -496,6 +706,38 @@ public class ProjectResource {
 			this.contributedSettings = contributedSettings;
 		}
 		
+		public void populate(Project project) {
+			project.setBranchProtections(getBranchProtections());
+			project.setTagProtections(getTagProtections());
+			project.setBuildSetting(getBuildSetting());
+			project.setPackSetting(getPackSetting());
+			project.setIssueSetting(getIssueSetting());
+			project.setNamedCodeCommentQueries(getNamedCodeCommentQueries());
+			project.setNamedCommitQueries(getNamedCommitQueries());
+			project.setPullRequestSetting(getPullRequestSetting());
+			project.setWebHooks(getWebHooks());
+			var contributedSettings = new LinkedHashMap<String, ContributedProjectSetting>();
+			for (var contributedSetting: getContributedSettings())
+				contributedSettings.put(contributedSetting.getClass().getName(), contributedSetting);
+			project.setContributedSettings(contributedSettings);
+		}
+
+		public static ProjectSetting from(Project project) {
+			ProjectSetting setting = new ProjectSetting();
+			setting.setBranchProtections(project.getBranchProtections());
+			setting.setTagProtections(project.getTagProtections());
+			setting.setBuildSetting(project.getBuildSetting());
+			setting.setPackSetting(project.getPackSetting());
+			setting.setIssueSetting(project.getIssueSetting());
+			setting.setNamedCodeCommentQueries(project.getNamedCodeCommentQueries());
+			setting.setNamedCommitQueries(project.getNamedCommitQueries());
+			setting.setPullRequestSetting(project.getPullRequestSetting());
+			setting.setWebHooks(project.getWebHooks());
+			setting.getContributedSettings().addAll(project.getContributedSettings().values());
+
+			return setting;
+		}
+
 	}
 	
 }

server-core/src/main/java/io/onedev/server/rest/resource/PullRequestResource.java

@@ -1,11 +1,51 @@
 package io.onedev.server.rest.resource;
 
+import static io.onedev.server.model.support.pullrequest.MergeStrategy.SQUASH_SOURCE_BRANCH_COMMITS;
+import static javax.ws.rs.core.Response.Status.NOT_ACCEPTABLE;
+
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import javax.annotation.Nullable;
+import javax.inject.Inject;
+import javax.inject.Singleton;
+import javax.validation.constraints.NotEmpty;
+import javax.validation.constraints.NotNull;
+import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.GET;
+import javax.ws.rs.POST;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.QueryParam;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+
+import org.apache.shiro.authz.UnauthorizedException;
+import org.eclipse.jgit.lib.ObjectId;
+import org.joda.time.DateTime;
+
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.entitymanager.PullRequestChangeManager;
 import io.onedev.server.entitymanager.PullRequestManager;
 import io.onedev.server.entitymanager.UserManager;
 import io.onedev.server.git.service.GitService;
-import io.onedev.server.model.*;
+import io.onedev.server.model.Build;
+import io.onedev.server.model.PullRequest;
+import io.onedev.server.model.PullRequestAssignment;
+import io.onedev.server.model.PullRequestChange;
+import io.onedev.server.model.PullRequestComment;
+import io.onedev.server.model.PullRequestLabel;
+import io.onedev.server.model.PullRequestReview;
 import io.onedev.server.model.PullRequestReview.Status;
+import io.onedev.server.model.PullRequestUpdate;
+import io.onedev.server.model.PullRequestWatch;
+import io.onedev.server.model.User;
 import io.onedev.server.model.support.pullrequest.AutoMerge;
 import io.onedev.server.model.support.pullrequest.MergePreview;
 import io.onedev.server.model.support.pullrequest.MergeStrategy;
@@ -16,26 +56,6 @@ import io.onedev.server.rest.resource.support.RestConstants;
 import io.onedev.server.search.entity.pullrequest.PullRequestQuery;
 import io.onedev.server.security.SecurityUtils;
 import io.onedev.server.util.ProjectAndBranch;
-import org.apache.shiro.authz.UnauthorizedException;
-import org.eclipse.jgit.lib.ObjectId;
-import org.joda.time.DateTime;
-
-import javax.annotation.Nullable;
-import javax.inject.Inject;
-import javax.inject.Singleton;
-import javax.validation.constraints.NotEmpty;
-import javax.validation.constraints.NotNull;
-import javax.ws.rs.*;
-import javax.ws.rs.core.MediaType;
-import javax.ws.rs.core.Response;
-import java.io.Serializable;
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.List;
-import java.util.stream.Collectors;
-
-import static io.onedev.server.model.support.pullrequest.MergeStrategy.SQUASH_SOURCE_BRANCH_COMMITS;
-import static javax.ws.rs.core.Response.Status.NOT_ACCEPTABLE;
 
 @Api(order=3000, description="In most cases, pull request resource is operated with pull request id, which is different from pull request number. "
 		+ "To get pull request id of a particular pull request number, use the <a href='/~help/api/io.onedev.server.rest.PullRequestResource/queryBasicInfo'>Query Basic Info</a> operation with query for "
@@ -53,21 +73,24 @@ public class PullRequestResource {
 	private final UserManager userManager;
 	
 	private final GitService gitService;
+
+	private final AuditManager auditManager;
 	
 	@Inject
 	public PullRequestResource(PullRequestManager pullRequestManager, 
 			PullRequestChangeManager pullRequestChangeManager, 
-			UserManager userManager, GitService gitService) {
+			UserManager userManager, GitService gitService, AuditManager auditManager) {
 		this.pullRequestManager = pullRequestManager;
 		this.pullRequestChangeManager = pullRequestChangeManager;
 		this.userManager = userManager;
 		this.gitService = gitService;
+		this.auditManager = auditManager;
 	}
 
 	@Api(order=100)
 	@Path("/{requestId}")
     @GET
-    public PullRequest getBasicInfo(@PathParam("requestId") Long requestId) {
+    public PullRequest getPullRequest(@PathParam("requestId") Long requestId) {
 		PullRequest pullRequest = pullRequestManager.load(requestId);
     	if (!SecurityUtils.canReadCode(pullRequest.getProject())) 
 			throw new UnauthorizedException();
@@ -178,7 +201,7 @@ public class PullRequestResource {
 	
 	@Api(order=1100)
 	@GET
-    public List<PullRequest> queryBasicInfo(
+    public List<PullRequest> queryPullRequests(
     		@QueryParam("query") @Api(description="Syntax of this query is the same as in <a href='/~pulls'>pull requests page</a>", example="to be reviewed by me") String query, 
     		@QueryParam("offset") @Api(example="0") int offset, 
     		@QueryParam("count") @Api(example="100") int count) {
@@ -198,7 +221,7 @@ public class PullRequestResource {
 
 	@Api(order=1200)
 	@POST
-    public Response create(@NotNull PullRequestOpenData data) {
+    public Response createPullRequest(@NotNull PullRequestOpenData data) {
 		User user = SecurityUtils.getUser();
 		
 		ProjectAndBranch target = new ProjectAndBranch(data.getTargetProjectId(), data.getTargetBranch());
@@ -381,7 +404,7 @@ public class PullRequestResource {
 	@Api(order=1600)
 	@Path("/{requestId}/reopen")
     @POST
-    public Response reopen(@PathParam("requestId") Long requestId, String note) {
+    public Response reopenPullRequest(@PathParam("requestId") Long requestId, String note) {
 		PullRequest request = pullRequestManager.load(requestId);
     	if (!SecurityUtils.canModifyPullRequest(request))
 			throw new UnauthorizedException();
@@ -396,7 +419,7 @@ public class PullRequestResource {
 	@Api(order=1700)
 	@Path("/{requestId}/discard")
     @POST
-    public Response discard(@PathParam("requestId") Long requestId, String note) {
+    public Response discardPullRequest(@PathParam("requestId") Long requestId, String note) {
 		PullRequest request = pullRequestManager.load(requestId);
     	if (!SecurityUtils.canModifyPullRequest(request))
 			throw new UnauthorizedException();
@@ -410,7 +433,7 @@ public class PullRequestResource {
 	@Api(order=1800)
 	@Path("/{requestId}/merge")
     @POST
-    public Response merge(@PathParam("requestId") Long requestId, String note) {
+    public Response mergePullRequest(@PathParam("requestId") Long requestId, String note) {
 		PullRequest request = pullRequestManager.load(requestId);
 		var user = SecurityUtils.getUser();
     	if (!SecurityUtils.canWriteCode(user.asSubject(), request.getProject()))
@@ -471,11 +494,13 @@ public class PullRequestResource {
 	@Api(order=2100)
 	@Path("/{requestId}")
     @DELETE
-    public Response delete(@PathParam("requestId") Long requestId) {
+    public Response deletePullRequest(@PathParam("requestId") Long requestId) {
     	PullRequest pullRequest = pullRequestManager.load(requestId);
     	if (!SecurityUtils.canManagePullRequests(pullRequest.getProject()))
 			throw new UnauthorizedException();
-    	pullRequestManager.delete(pullRequest);
+		var oldAuditContent = VersionedXmlDoc.fromBean(pullRequest).toXML();
+		pullRequestManager.delete(pullRequest);
+		auditManager.audit(pullRequest.getProject(), "deleted pull request via RESTful API", oldAuditContent, null);
     	return Response.ok().build();
     }
 	

server-core/src/main/java/io/onedev/server/rest/resource/RoleResource.java

@@ -1,30 +1,35 @@
 package io.onedev.server.rest.resource;
 
-import java.util.ArrayList;
-import java.util.Collection;
 import java.util.List;
 
 import javax.inject.Inject;
 import javax.inject.Singleton;
 import javax.validation.constraints.NotNull;
-import javax.ws.rs.*;
+import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.GET;
+import javax.ws.rs.NotFoundException;
+import javax.ws.rs.POST;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.QueryParam;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 
-import io.onedev.server.entitymanager.LinkSpecManager;
-import io.onedev.server.model.LinkSpec;
 import org.apache.shiro.authz.UnauthorizedException;
 import org.hibernate.criterion.MatchMode;
 import org.hibernate.criterion.Restrictions;
 
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.entitymanager.RoleManager;
 import io.onedev.server.model.Role;
 import io.onedev.server.persistence.dao.EntityCriteria;
-import io.onedev.server.rest.annotation.Api;
 import io.onedev.server.rest.InvalidParamException;
+import io.onedev.server.rest.annotation.Api;
 import io.onedev.server.rest.resource.support.RestConstants;
 import io.onedev.server.security.SecurityUtils;
-import io.onedev.server.util.facade.RoleFacade;
 
 @Api(order=7000)
 @Path("/roles")
@@ -35,26 +40,26 @@ public class RoleResource {
 
 	private final RoleManager roleManager;
 	
-	private final LinkSpecManager linkSpecManager;
+	private final AuditManager auditManager;
 	
 	@Inject
-	public RoleResource(RoleManager roleManager, LinkSpecManager linkSpecManager) {
+	public RoleResource(RoleManager roleManager, AuditManager auditManager) {
 		this.roleManager = roleManager;
-		this.linkSpecManager = linkSpecManager;
+		this.auditManager = auditManager;
 	}
 
 	@Api(order=100)
 	@Path("/{roleId}")
     @GET
-    public Role get(@PathParam("roleId") Long roleId) {
+    public Role getRole(@PathParam("roleId") Long roleId) {
     	if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
     	return roleManager.load(roleId);
-    }
+    }	
 
 	@Api(order=200)
 	@GET
-    public List<Role> query(@QueryParam("name") String name, @QueryParam("offset") @Api(example="0") int offset, 
+    public List<Role> queryRoles(@QueryParam("name") String name, @QueryParam("offset") @Api(example="0") int offset, 
     		@QueryParam("count") @Api(example="100") int count) {
 		
 		if (!SecurityUtils.isAdministrator())
@@ -67,50 +72,47 @@ public class RoleResource {
 		if (name != null) 
 			criteria.add(Restrictions.ilike("name", name.replace('*', '%'), MatchMode.EXACT));
 		
-    	return roleManager.query(criteria, offset, count);
+    	return roleManager.query(name, offset, count);
     }
 
 	@Api(order=250)
 	@Path("/ids/{name}")
 	@GET
-	public Long getId(@PathParam("name") String name) {
+	public Long getRoleId(@PathParam("name") String name) {
 		var role = roleManager.find(name);
 		if (role != null)
 			return role.getId();
 		else
 			throw new NotFoundException();
 	}
-	
+
 	@Api(order=300, description="Create new role")
     @POST
-    public Long create(@NotNull Role role) {
+    public Long createRole(@NotNull Role role) {
     	if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
-		
-		Collection<LinkSpec> authorizedLinks = new ArrayList<>();
-		for (String linkName: role.getEditableIssueLinks())
-			authorizedLinks.add(linkSpecManager.find(linkName));
-		
-		roleManager.create(role, authorizedLinks);
-    		
+
+		roleManager.create(role, null);
+		var auditContent = VersionedXmlDoc.fromBean(role).toXML();
+		auditManager.audit(null, "created role \"" + role.getName() + "\" via RESTful API", null, auditContent);
+
     	return role.getId();
     }
 
 	@Api(order=350, description="Update role of specified id")
 	@Path("/{roleId}")
 	@POST
-	public Response update(@PathParam("roleId") Long roleId, @NotNull Role role) {
+	public Response updateRole(@PathParam("roleId") Long roleId, @NotNull Role role) {
 		if (!SecurityUtils.isAdministrator())
 			throw new UnauthorizedException();
 
-		Collection<LinkSpec> authorizedLinks = new ArrayList<>();
-		for (String linkName: role.getEditableIssueLinks())
-			authorizedLinks.add(linkSpecManager.find(linkName));
+		var oldAuditContent = role.getOldVersion().toXML();
+		var newAuditContent = VersionedXmlDoc.fromBean(role).toXML();
 
-		if (role.getOldVersion() != null)
-			roleManager.update(role, authorizedLinks, ((RoleFacade) role.getOldVersion()).getName());
-		else
-			roleManager.update(role, authorizedLinks, null);
+		var oldName = role.getOldVersion().getRootElement().elementText(Role.PROP_NAME);
+		roleManager.update(role, null, oldName);
+
+		auditManager.audit(null, "changed role \"" + role.getName() + "\" via RESTful API", oldAuditContent, newAuditContent);
 
 		return Response.ok().build();
 	}
@@ -118,11 +120,14 @@ public class RoleResource {
 	@Api(order=400)
 	@Path("/{roleId}")
     @DELETE
-    public Response delete(@PathParam("roleId") Long roleId) {
+    public Response deleteRole(@PathParam("roleId") Long roleId) {
     	if (!SecurityUtils.isAdministrator())
 			throw new UnauthorizedException();
-    	roleManager.delete(roleManager.load(roleId));
+		var role = roleManager.load(roleId);
+		var oldAuditContent = VersionedXmlDoc.fromBean(role).toXML();
+    	roleManager.delete(role);
+		auditManager.audit(null, "deleted role \"" + role.getName() + "\" via RESTful API", oldAuditContent, null);
     	return Response.ok().build();
-    }
-	
+    }	
+
 }

server-core/src/main/java/io/onedev/server/rest/resource/SettingResource.java

@@ -1,26 +1,47 @@
 package io.onedev.server.rest.resource;
 
-import io.onedev.server.OneDev;
-import io.onedev.server.entitymanager.SettingManager;
-import io.onedev.server.model.support.administration.mailservice.MailService;
-import io.onedev.server.model.support.administration.*;
-import io.onedev.server.model.support.administration.authenticator.Authenticator;
-import io.onedev.server.model.support.administration.emailtemplates.EmailTemplates;
-import io.onedev.server.model.support.administration.jobexecutor.JobExecutor;
-import io.onedev.server.model.support.administration.sso.SsoConnector;
-import io.onedev.server.rest.annotation.Api;
-import io.onedev.server.rest.InvalidParamException;
-import io.onedev.server.security.SecurityUtils;
-import io.onedev.server.web.page.layout.ContributedAdministrationSetting;
-import org.apache.shiro.authz.UnauthorizedException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
 
 import javax.inject.Inject;
 import javax.inject.Singleton;
 import javax.validation.constraints.NotNull;
-import javax.ws.rs.*;
+import javax.ws.rs.Consumes;
+import javax.ws.rs.GET;
+import javax.ws.rs.POST;
+import javax.ws.rs.Path;
+import javax.ws.rs.Produces;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
-import java.util.*;
+
+import org.apache.shiro.authz.UnauthorizedException;
+
+import io.onedev.server.OneDev;
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
+import io.onedev.server.entitymanager.SettingManager;
+import io.onedev.server.model.support.administration.BackupSetting;
+import io.onedev.server.model.support.administration.GlobalBuildSetting;
+import io.onedev.server.model.support.administration.GlobalIssueSetting;
+import io.onedev.server.model.support.administration.GlobalProjectSetting;
+import io.onedev.server.model.support.administration.GlobalPullRequestSetting;
+import io.onedev.server.model.support.administration.GroovyScript;
+import io.onedev.server.model.support.administration.SecuritySetting;
+import io.onedev.server.model.support.administration.ServiceDeskSetting;
+import io.onedev.server.model.support.administration.SshSetting;
+import io.onedev.server.model.support.administration.SystemSetting;
+import io.onedev.server.model.support.administration.authenticator.Authenticator;
+import io.onedev.server.model.support.administration.emailtemplates.EmailTemplates;
+import io.onedev.server.model.support.administration.jobexecutor.JobExecutor;
+import io.onedev.server.model.support.administration.mailservice.MailService;
+import io.onedev.server.model.support.administration.sso.SsoConnector;
+import io.onedev.server.rest.InvalidParamException;
+import io.onedev.server.rest.annotation.Api;
+import io.onedev.server.security.SecurityUtils;
+import io.onedev.server.web.page.layout.ContributedAdministrationSetting;
 
 @Api(order=10000)
 @Path("/settings")
@@ -30,10 +51,13 @@ import java.util.*;
 public class SettingResource {
 
 	private final SettingManager settingManager;
+
+	private final AuditManager auditManager;
 	
 	@Inject
-	public SettingResource(SettingManager settingManager) {
+	public SettingResource(SettingManager settingManager, AuditManager auditManager) {
 		this.settingManager = settingManager;
+		this.auditManager = auditManager;
 	}
 
 	@Api(order=100)
@@ -189,8 +213,10 @@ public class SettingResource {
     	String ingressUrl = OneDev.getInstance().getIngressUrl();
     	if (ingressUrl != null && !ingressUrl.equals(systemSetting.getServerUrl()))
     		throw new InvalidParamException("Server URL can only be \"" + ingressUrl + "\"");
-    	
+    	var oldAuditContent = VersionedXmlDoc.fromBean(settingManager.getSystemSetting()).toXML();
     	settingManager.saveSystemSetting(systemSetting);
+		auditManager.audit(null, "changed system setting via RESTful API", 
+				oldAuditContent, VersionedXmlDoc.fromBean(systemSetting).toXML());
     	return Response.ok().build();
     }
 
@@ -200,7 +226,10 @@ public class SettingResource {
     public Response setAuthenticator(Authenticator authenticator) {
     	if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
+		var oldAuditContent = VersionedXmlDoc.fromBean(settingManager.getAuthenticator()).toXML();
     	settingManager.saveAuthenticator(authenticator);
+		auditManager.audit(null, "changed authenticator via RESTful API", 
+				oldAuditContent, VersionedXmlDoc.fromBean(authenticator).toXML());
     	return Response.ok().build();
     }
 	
@@ -210,7 +239,10 @@ public class SettingResource {
     public Response setBackupSetting(BackupSetting backupSetting) {
     	if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
+		var oldAuditContent = VersionedXmlDoc.fromBean(settingManager.getBackupSetting()).toXML();
     	settingManager.saveBackupSetting(backupSetting);
+		auditManager.audit(null, "changed backup settings via RESTful API", 
+				oldAuditContent, VersionedXmlDoc.fromBean(backupSetting).toXML());
     	return Response.ok().build();
     }
 	
@@ -220,7 +252,10 @@ public class SettingResource {
     public Response setBuildSetting(@NotNull GlobalBuildSetting buildSetting) {
     	if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
+		var oldAuditContent = VersionedXmlDoc.fromBean(settingManager.getBuildSetting()).toXML();
     	settingManager.saveBuildSetting(buildSetting);
+		auditManager.audit(null, "changed build settings via RESTful API", 
+				oldAuditContent, VersionedXmlDoc.fromBean(buildSetting).toXML());
     	return Response.ok().build();
     }
 	
@@ -230,7 +265,10 @@ public class SettingResource {
     public Response setGroovyScripts(@NotNull List<GroovyScript> groovyScripts) {
     	if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
+		var oldAuditContent = VersionedXmlDoc.fromBean(settingManager.getGroovyScripts()).toXML();
     	settingManager.saveGroovyScripts(groovyScripts);
+		auditManager.audit(null, "changed groovy scripts via RESTful API", 
+				oldAuditContent, VersionedXmlDoc.fromBean(groovyScripts).toXML());
     	return Response.ok().build();
     }
 	
@@ -240,8 +278,11 @@ public class SettingResource {
     public Response setIssueSetting(@NotNull GlobalIssueSetting issueSetting) {
     	if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
+		var oldAuditContent = VersionedXmlDoc.fromBean(settingManager.getIssueSetting()).toXML();
     	issueSetting.setReconciled(false);
     	settingManager.saveIssueSetting(issueSetting);
+		auditManager.audit(null, "changed issue settings via RESTful API", 
+				oldAuditContent, VersionedXmlDoc.fromBean(issueSetting).toXML());
     	return Response.ok().build();
     }
 	
@@ -251,7 +292,10 @@ public class SettingResource {
     public Response setJobExecutors(@NotNull List<JobExecutor> jobExecutors) {
     	if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
+		var oldAuditContent = VersionedXmlDoc.fromBean(settingManager.getJobExecutors()).toXML();
     	settingManager.saveJobExecutors(jobExecutors);
+		auditManager.audit(null, "changed job executors via RESTful API", 
+				oldAuditContent, VersionedXmlDoc.fromBean(jobExecutors).toXML());
     	return Response.ok().build();
     }
 
@@ -261,7 +305,10 @@ public class SettingResource {
     public Response setMailService(MailService mailService) {
     	if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
+		var oldAuditContent = VersionedXmlDoc.fromBean(settingManager.getMailService()).toXML();
     	settingManager.saveMailService(mailService);
+		auditManager.audit(null, "changed mail service via RESTful API", 
+				oldAuditContent, VersionedXmlDoc.fromBean(mailService).toXML());
     	return Response.ok().build();
     }
 	
@@ -271,7 +318,10 @@ public class SettingResource {
     public Response setServiceDeskSetting(ServiceDeskSetting serviceDeskSetting) {
     	if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
+		var oldAuditContent = VersionedXmlDoc.fromBean(settingManager.getServiceDeskSetting()).toXML();
     	settingManager.saveServiceDeskSetting(serviceDeskSetting);
+		auditManager.audit(null, "changed service desk settings via RESTful API", 
+				oldAuditContent, VersionedXmlDoc.fromBean(serviceDeskSetting).toXML());
     	return Response.ok().build();
     }
 	
@@ -281,7 +331,10 @@ public class SettingResource {
     public Response setNotificationTemplateSetting(EmailTemplates emailTemplates) {
     	if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
+		var oldAuditContent = VersionedXmlDoc.fromBean(settingManager.getEmailTemplates()).toXML();
     	settingManager.saveEmailTemplates(emailTemplates);
+		auditManager.audit(null, "changed notification template via RESTful API", 
+				oldAuditContent, VersionedXmlDoc.fromBean(emailTemplates).toXML());
     	return Response.ok().build();
     }
 	
@@ -291,7 +344,10 @@ public class SettingResource {
     public Response setProjectSetting(@NotNull GlobalProjectSetting projectSetting) {
     	if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
+		var oldAuditContent = VersionedXmlDoc.fromBean(settingManager.getProjectSetting()).toXML();
     	settingManager.saveProjectSetting(projectSetting);
+		auditManager.audit(null, "changed project settings via RESTful API", 
+				oldAuditContent, VersionedXmlDoc.fromBean(projectSetting).toXML());
     	return Response.ok().build();
     }
 	
@@ -301,7 +357,10 @@ public class SettingResource {
     public Response setPullRequestSetting(@NotNull GlobalPullRequestSetting pullRequestSetting) {
     	if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
+		var oldAuditContent = VersionedXmlDoc.fromBean(settingManager.getPullRequestSetting()).toXML();
     	settingManager.savePullRequestSetting(pullRequestSetting);
+		auditManager.audit(null, "changed pull request settings via RESTful API", 
+				oldAuditContent, VersionedXmlDoc.fromBean(pullRequestSetting).toXML());
     	return Response.ok().build();
     }
 	
@@ -311,7 +370,10 @@ public class SettingResource {
     public Response setSecuritySetting(@NotNull SecuritySetting securitySetting) {
     	if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
+		var oldAuditContent = VersionedXmlDoc.fromBean(settingManager.getSecuritySetting()).toXML();
     	settingManager.saveSecuritySetting(securitySetting);
+		auditManager.audit(null, "changed security settings via RESTful API", 
+				oldAuditContent, VersionedXmlDoc.fromBean(securitySetting).toXML());
     	return Response.ok().build();
     }
 	
@@ -321,7 +383,10 @@ public class SettingResource {
     public Response setSshSetting(@NotNull SshSetting sshSetting) {
     	if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
+		var oldAuditContent = VersionedXmlDoc.fromBean(settingManager.getSshSetting()).toXML();
     	settingManager.saveSshSetting(sshSetting);
+		auditManager.audit(null, "changed ssh settings via RESTful API", 
+				oldAuditContent, VersionedXmlDoc.fromBean(sshSetting).toXML());
     	return Response.ok().build();
     }
 	
@@ -331,20 +396,34 @@ public class SettingResource {
     public Response setSsoConnectors(@NotNull List<SsoConnector> ssoConnectors) {
     	if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
+		var oldAuditContent = VersionedXmlDoc.fromBean(settingManager.getSsoConnectors()).toXML();
     	settingManager.saveSsoConnectors(ssoConnectors);
+		auditManager.audit(null, "changed sso connectors via RESTful API", 
+				oldAuditContent, VersionedXmlDoc.fromBean(ssoConnectors).toXML());
     	return Response.ok().build();
     }
 	
+	private String getAuditContent(Map<String, ContributedAdministrationSetting> contributedSettings) {
+		var list = new ArrayList<ContributedAdministrationSetting>();
+		for (var entry: contributedSettings.entrySet())
+			list.add(entry.getValue());
+		Collections.sort(list, (a, b) -> {return a.getClass().getName().compareTo(b.getClass().getName());});
+		return VersionedXmlDoc.fromBean(list).toXML();
+	}
+	
 	@Api(order=2800)
 	@Path("/contributed-settings")
 	@POST
     public Response setContributedSettings(@NotNull List<ContributedAdministrationSetting> contributedSettings) {
     	if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
+		var oldAuditContent = getAuditContent(settingManager.getContributedSettings());
 		var settingMap = new HashMap<String, ContributedAdministrationSetting>();
 		for (var setting: contributedSettings)
 			settingMap.put(setting.getClass().getName(), setting);
     	settingManager.saveContributedSettings(settingMap);
+		auditManager.audit(null, "changed contributed settings via RESTful API", 
+				oldAuditContent, getAuditContent(settingMap));
     	return Response.ok().build();
     }
 	

server-core/src/main/java/io/onedev/server/rest/resource/SshKeyResource.java

@@ -1,5 +1,7 @@
 package io.onedev.server.rest.resource;
 
+import static io.onedev.server.security.SecurityUtils.getAuthUser;
+
 import java.util.Date;
 
 import javax.inject.Inject;
@@ -16,6 +18,8 @@ import javax.ws.rs.core.Response;
 
 import org.apache.shiro.authz.UnauthorizedException;
 
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.entitymanager.SshKeyManager;
 import io.onedev.server.model.SshKey;
 import io.onedev.server.rest.annotation.Api;
@@ -30,42 +34,53 @@ public class SshKeyResource {
 
 	private final SshKeyManager sshKeyManager;
 
+	private final AuditManager auditManager;
+
 	@Inject
-	public SshKeyResource(SshKeyManager sshKeyManager) {
+	public SshKeyResource(SshKeyManager sshKeyManager, AuditManager auditManager) {
 		this.sshKeyManager = sshKeyManager;
+		this.auditManager = auditManager;
 	}
 
 	@Api(order=100)
 	@Path("/{sshKeyId}")
 	@GET
-	public SshKey get(@PathParam("sshKeyId") Long sshKeyId) {
+	public SshKey getKey(@PathParam("sshKeyId") Long sshKeyId) {
 		SshKey sshKey = sshKeyManager.load(sshKeyId);
-    	if (!SecurityUtils.isAdministrator() && !sshKey.getOwner().equals(SecurityUtils.getAuthUser())) 
+    	if (!SecurityUtils.isAdministrator() && !sshKey.getOwner().equals(getAuthUser())) 
 			throw new UnauthorizedException();
     	return sshKey;
 	}
 	
 	@Api(order=150, description="Create new ssh key")
 	@POST
-	public Long create(SshKey sshKey) {
-    	if (!SecurityUtils.isAdministrator() && !sshKey.getOwner().equals(SecurityUtils.getAuthUser())) 
+	public Long createKey(SshKey sshKey) {
+    	if (!SecurityUtils.isAdministrator() && !sshKey.getOwner().equals(getAuthUser())) 
 			throw new UnauthorizedException();
 		
 		sshKey.setCreatedAt(new Date());
-    	sshKey.fingerprint();
+    	sshKey.generateFingerprint();
     	
     	sshKeyManager.create(sshKey);
+		if (!getAuthUser().equals(sshKey.getOwner())) {
+			var newAuditContent = VersionedXmlDoc.fromBean(sshKey).toXML();
+			auditManager.audit(null, "created ssh key for account \"" + sshKey.getOwner().getName() + "\" via RESTful API", null, newAuditContent);
+		}
     	return sshKey.getId();
 	}
 	
 	@Api(order=200)
 	@Path("/{sshKeyId}")
 	@DELETE
-	public Response delete(@PathParam("sshKeyId") Long sshKeyId) {
+	public Response deleteKey(@PathParam("sshKeyId") Long sshKeyId) {
 		SshKey sshKey = sshKeyManager.load(sshKeyId);
-    	if (!SecurityUtils.isAdministrator() && !sshKey.getOwner().equals(SecurityUtils.getAuthUser())) 
+    	if (!SecurityUtils.isAdministrator() && !sshKey.getOwner().equals(getAuthUser())) 
 			throw new UnauthorizedException();
 		sshKeyManager.delete(sshKey);
+		if (!getAuthUser().equals(sshKey.getOwner())) {
+			var oldAuditContent = VersionedXmlDoc.fromBean(sshKey).toXML();
+			auditManager.audit(null, "deleted ssh key for account \"" + sshKey.getOwner().getName() + "\" via RESTful API", oldAuditContent, null);
+		}
 		return Response.ok().build();
 	}
 	

server-core/src/main/java/io/onedev/server/rest/resource/UserAuthorizationResource.java

@@ -1,18 +1,27 @@
 package io.onedev.server.rest.resource;
 
-import io.onedev.server.entitymanager.UserAuthorizationManager;
-import io.onedev.server.model.UserAuthorization;
-import io.onedev.server.rest.annotation.Api;
-import io.onedev.server.security.SecurityUtils;
-import org.apache.shiro.authz.UnauthorizedException;
-
 import javax.inject.Inject;
 import javax.inject.Singleton;
 import javax.validation.constraints.NotNull;
-import javax.ws.rs.*;
+import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.GET;
+import javax.ws.rs.POST;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 
+import org.apache.shiro.authz.UnauthorizedException;
+
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
+import io.onedev.server.entitymanager.UserAuthorizationManager;
+import io.onedev.server.model.UserAuthorization;
+import io.onedev.server.rest.annotation.Api;
+import io.onedev.server.security.SecurityUtils;
+
 @Api(order=8000)
 @Path("/user-authorizations")
 @Consumes(MediaType.APPLICATION_JSON)
@@ -22,15 +31,18 @@ public class UserAuthorizationResource {
 
 	private final UserAuthorizationManager authorizationManager;
 
+	private final AuditManager auditManager;
+
 	@Inject
-	public UserAuthorizationResource(UserAuthorizationManager authorizationManager) {
+	public UserAuthorizationResource(UserAuthorizationManager authorizationManager, AuditManager auditManager) {
 		this.authorizationManager = authorizationManager;
+		this.auditManager = auditManager;
 	}
 
 	@Api(order=100, description = "Get user authorization of specified id")
 	@Path("/{authorizationId}")
 	@GET
-	public UserAuthorization get(@PathParam("authorizationId") Long authorizationId) {
+	public UserAuthorization getAuthorization(@PathParam("authorizationId") Long authorizationId) {
 		UserAuthorization authorization = authorizationManager.load(authorizationId);
 		if (!SecurityUtils.canManageProject(authorization.getProject()))
 			throw new UnauthorizedException();
@@ -39,21 +51,25 @@ public class UserAuthorizationResource {
 	
 	@Api(order=200, description="Create user authorization")
 	@POST
-	public Long create(@NotNull UserAuthorization authorization) {
+	public Long createAuthorization(@NotNull UserAuthorization authorization) {
 		if (!SecurityUtils.canManageProject(authorization.getProject()))
 			throw new UnauthorizedException();
 		authorizationManager.createOrUpdate(authorization);
+		var newAuditContent = VersionedXmlDoc.fromBean(authorization).toXML();
+		auditManager.audit(null, "created user authorization via RESTful API", null, newAuditContent);
 		return authorization.getId();
 	}
 
 	@Api(order=300, description = "Delete user authorization of specified id")
 	@Path("/{authorizationId}")
 	@DELETE
-	public Response delete(@PathParam("authorizationId") Long authorizationId) {
+	public Response deleteAuthorization(@PathParam("authorizationId") Long authorizationId) {
 		UserAuthorization authorization = authorizationManager.load(authorizationId);
 		if (!SecurityUtils.canManageProject(authorization.getProject()))
 			throw new UnauthorizedException();
 		authorizationManager.delete(authorization);
+		var oldAuditContent = VersionedXmlDoc.fromBean(authorization).toXML();
+		auditManager.audit(null, "deleted user authorization via RESTful API", oldAuditContent, null);
 		return Response.ok().build();
 	}
 	

server-core/src/main/java/io/onedev/server/rest/resource/UserResource.java

@@ -1,5 +1,6 @@
 package io.onedev.server.rest.resource;
 
+import static io.onedev.server.security.SecurityUtils.getAuthUser;
 import static java.util.stream.Collectors.toList;
 
 import java.io.Serializable;
@@ -30,11 +31,12 @@ import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 
 import org.apache.shiro.authc.credential.PasswordService;
-import org.apache.shiro.authz.UnauthenticatedException;
 import org.apache.shiro.authz.UnauthorizedException;
 
 import io.onedev.commons.utils.ExplicitException;
 import io.onedev.server.annotation.UserName;
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.entitymanager.EmailAddressManager;
 import io.onedev.server.entitymanager.SshKeyManager;
 import io.onedev.server.entitymanager.UserManager;
@@ -76,45 +78,48 @@ public class UserResource {
 	private final PasswordService passwordService;
 	
 	private final EmailAddressManager emailAddressManager;
+
+	private final AuditManager auditManager;
 	
 	@Inject
 	public UserResource(UserManager userManager, SshKeyManager sshKeyManager, 
-			PasswordService passwordService, EmailAddressManager emailAddressManager) {
+			PasswordService passwordService, EmailAddressManager emailAddressManager, AuditManager auditManager) {
 		this.userManager = userManager;
 		this.sshKeyManager = sshKeyManager;
 		this.passwordService = passwordService;
 		this.emailAddressManager = emailAddressManager;
+		this.auditManager = auditManager;
 	}
 
-	private BasicSetting getBasicSetting(User user) {
-		var basicSetting = new BasicSetting();
-		basicSetting.setDisabled(user.isDisabled());
-		basicSetting.setServiceAccount(user.isServiceAccount());
-		basicSetting.setName(user.getName());
-		basicSetting.setFullName(user.getFullName());
+	private UserData getData(User user) {
+		var data = new UserData();
+		data.setDisabled(user.isDisabled());
+		data.setServiceAccount(user.isServiceAccount());
+		data.setName(user.getName());
+		data.setFullName(user.getFullName());
 		if (!user.isServiceAccount()) 
-			basicSetting.setNotifyOwnEvents(user.isNotifyOwnEvents());
-		return basicSetting;
+			data.setNotifyOwnEvents(user.isNotifyOwnEvents());
+		return data;
 	}
 
-	@Api(order=100, name="Get Basic Settings")
+	@Api(order=100)
 	@Path("/{userId}")
     @GET
-    public BasicSetting getBasicSetting(@PathParam("userId") Long userId) {
+    public UserData getUser(@PathParam("userId") Long userId) {
     	User user = userManager.load(userId);
-    	if (!SecurityUtils.isAdministrator() && !user.equals(SecurityUtils.getAuthUser())) 
+    	if (!SecurityUtils.isAdministrator() && !user.equals(getAuthUser())) 
 			throw new UnauthorizedException();
-		return getBasicSetting(user);
+		return getData(user);
     }
 
-	@Api(order=200, name="Get Basic Settings of Current User")
+	@Api(order=200)
 	@Path("/me")
     @GET
-    public BasicSetting getMyBasicSetting() {
-		User user = SecurityUtils.getAuthUser();
+    public UserData getMe() {
+		User user = getAuthUser();
 		if (user == null)
 			throw new UnauthorizedException();
-		return getBasicSetting(user);
+		return getData(user);
     }
 	
 	@Api(order=250)
@@ -122,7 +127,7 @@ public class UserResource {
     @GET
     public Collection<AccessToken> getAccessTokens(@PathParam("userId") Long userId) {
     	User user = userManager.load(userId);
-    	if (!SecurityUtils.isAdministrator() && !user.equals(SecurityUtils.getAuthUser())) 
+    	if (!SecurityUtils.isAdministrator() && !user.equals(getAuthUser())) 
 			throw new UnauthorizedException();
 		return user.getAccessTokens();
     }
@@ -132,7 +137,7 @@ public class UserResource {
     @GET
     public Collection<EmailAddress> getEmailAddresses(@PathParam("userId") Long userId) {
     	User user = userManager.load(userId);
-    	if (!SecurityUtils.isAdministrator() && !user.equals(SecurityUtils.getAuthUser())) 
+    	if (!SecurityUtils.isAdministrator() && !user.equals(getAuthUser())) 
 			throw new UnauthorizedException();
 		return user.getEmailAddresses();
     }
@@ -160,7 +165,7 @@ public class UserResource {
     @GET
     public Collection<PullRequestReview> getPullRequestReviews(@PathParam("userId") Long userId) {
     	User user = userManager.load(userId);
-    	if (!SecurityUtils.isAdministrator() && !user.equals(SecurityUtils.getAuthUser())) 
+    	if (!SecurityUtils.isAdministrator() && !user.equals(getAuthUser())) 
 			throw new UnauthorizedException();
     	return user.getPullRequestReviews();
     }
@@ -170,7 +175,7 @@ public class UserResource {
     @GET
     public Collection<IssueVote> getIssueVotes(@PathParam("userId") Long userId) {
     	User user = userManager.load(userId);
-    	if (!SecurityUtils.isAdministrator() && !user.equals(SecurityUtils.getAuthUser())) 
+    	if (!SecurityUtils.isAdministrator() && !user.equals(getAuthUser())) 
 			throw new UnauthorizedException();
     	return user.getIssueVotes();
     }
@@ -180,7 +185,7 @@ public class UserResource {
     @GET
     public Collection<IssueWatch> getIssueWatches(@PathParam("userId") Long userId) {
     	User user = userManager.load(userId);
-    	if (!SecurityUtils.isAdministrator() && !user.equals(SecurityUtils.getAuthUser())) 
+    	if (!SecurityUtils.isAdministrator() && !user.equals(getAuthUser())) 
 			throw new UnauthorizedException();
     	return user.getIssueWatches();
     }
@@ -190,7 +195,7 @@ public class UserResource {
     @GET
     public Collection<BuildQueryPersonalization> getProjectBuildQueryPersonalizations(@PathParam("userId") Long userId) {
     	User user = userManager.load(userId);
-    	if (!SecurityUtils.isAdministrator() && !user.equals(SecurityUtils.getAuthUser())) 
+    	if (!SecurityUtils.isAdministrator() && !user.equals(getAuthUser())) 
 			throw new UnauthorizedException();
     	return user.getBuildQueryPersonalizations();
     }
@@ -200,7 +205,7 @@ public class UserResource {
     @GET
     public Collection<CodeCommentQueryPersonalization> getProjectCodeCommentQueryPersonalizations(@PathParam("userId") Long userId) {
     	User user = userManager.load(userId);
-    	if (!SecurityUtils.isAdministrator() && !user.equals(SecurityUtils.getAuthUser())) 
+    	if (!SecurityUtils.isAdministrator() && !user.equals(getAuthUser())) 
 			throw new UnauthorizedException();
     	return user.getCodeCommentQueryPersonalizations();
     }
@@ -210,7 +215,7 @@ public class UserResource {
     @GET
     public Collection<CommitQueryPersonalization> getProjectCommitQueryPersonalizations(@PathParam("userId") Long userId) {
     	User user = userManager.load(userId);
-    	if (!SecurityUtils.isAdministrator() && !user.equals(SecurityUtils.getAuthUser())) 
+    	if (!SecurityUtils.isAdministrator() && !user.equals(getAuthUser())) 
 			throw new UnauthorizedException();
     	return user.getCommitQueryPersonalizations();
     }
@@ -220,7 +225,7 @@ public class UserResource {
     @GET
     public Collection<IssueQueryPersonalization> getProjecIssueQueryPersonalizations(@PathParam("userId") Long userId) {
     	User user = userManager.load(userId);
-    	if (!SecurityUtils.isAdministrator() && !user.equals(SecurityUtils.getAuthUser())) 
+    	if (!SecurityUtils.isAdministrator() && !user.equals(getAuthUser())) 
 			throw new UnauthorizedException();
     	return user.getIssueQueryPersonalizations();
     }
@@ -230,7 +235,7 @@ public class UserResource {
     @GET
     public Collection<PullRequestQueryPersonalization> getProjecPullRequestQueryPersonalizations(@PathParam("userId") Long userId) {
     	User user = userManager.load(userId);
-    	if (!SecurityUtils.isAdministrator() && !user.equals(SecurityUtils.getAuthUser())) 
+    	if (!SecurityUtils.isAdministrator() && !user.equals(getAuthUser())) 
 			throw new UnauthorizedException();
     	return user.getPullRequestQueryPersonalizations();
     }
@@ -240,7 +245,7 @@ public class UserResource {
     @GET
     public Collection<PullRequestAssignment> getPullRequestAssignments(@PathParam("userId") Long userId) {
     	User user = userManager.load(userId);
-    	if (!SecurityUtils.isAdministrator() && !user.equals(SecurityUtils.getAuthUser())) 
+    	if (!SecurityUtils.isAdministrator() && !user.equals(getAuthUser())) 
 			throw new UnauthorizedException();
     	return user.getPullRequestAssignments();
     }
@@ -250,7 +255,7 @@ public class UserResource {
     @GET
     public Collection<PullRequestWatch> getPullRequestWatches(@PathParam("userId") Long userId) {
     	User user = userManager.load(userId);
-    	if (!SecurityUtils.isAdministrator() && !user.equals(SecurityUtils.getAuthUser())) 
+    	if (!SecurityUtils.isAdministrator() && !user.equals(getAuthUser())) 
 			throw new UnauthorizedException();
     	return user.getPullRequestWatches();
     }
@@ -260,18 +265,12 @@ public class UserResource {
     @GET
     public Collection<SshKey> getSshKeys(@PathParam("userId") Long userId) {
     	User user = userManager.load(userId);
-    	if (!SecurityUtils.isAdministrator() && !user.equals(SecurityUtils.getAuthUser())) 
+    	if (!SecurityUtils.isAdministrator() && !user.equals(getAuthUser())) 
 			throw new UnauthorizedException();
     	return user.getSshKeys();
     }
-	
-	@Api(order=1700)
-	@Path("/{userId}/queries-and-watches")
-    @GET
-    public QueriesAndWatches getQueriesAndWatches(@PathParam("userId") Long userId) {
-    	User user = userManager.load(userId);
-    	if (!SecurityUtils.isAdministrator() && !user.equals(SecurityUtils.getAuthUser())) 
-			throw new UnauthorizedException();
+
+	private QueriesAndWatches getQueriesAndWatches(User user) {
 		QueriesAndWatches queriesAndWatches = new QueriesAndWatches();
 		queriesAndWatches.buildQuerySubscriptions = user.getBuildQuerySubscriptions();
 		queriesAndWatches.issueQueryWatches = user.getIssueQueryWatches();
@@ -281,24 +280,34 @@ public class UserResource {
 		queriesAndWatches.projectQueries = user.getProjectQueries();
 		queriesAndWatches.pullRequestQueries = user.getPullRequestQueries();
 		return queriesAndWatches;
+	}
+	
+	@Api(order=1700)
+	@Path("/{userId}/queries-and-watches")
+    @GET
+    public QueriesAndWatches getQueriesAndWatches(@PathParam("userId") Long userId) {
+    	User user = userManager.load(userId);
+    	if (!SecurityUtils.isAdministrator() && !user.equals(getAuthUser())) 
+			throw new UnauthorizedException();
+		return getQueriesAndWatches(user);
     }
 	
-	@Api(order=1800, name="Query Basic Settings")
+	@Api(order=1800)
 	@GET
-    public List<BasicSetting> queryBasicSetting(
+    public List<UserData> queryUsers(
     		@QueryParam("term") @Api(description="Any string in login name, full name or email address") String term, 
     		@QueryParam("offset") @Api(example="0") int offset, 
     		@QueryParam("count") @Api(example="100") int count) {
 		if (!SecurityUtils.isAdministrator())
 			throw new UnauthorizedException();
 
-    	return userManager.query(term, offset, count).stream().map(this::getBasicSetting).collect(toList());
+    	return userManager.query(term, offset, count).stream().map(this::getData).collect(toList());
     }
 	
 	@Api(order=1850)
 	@Path("/ids/{name}")
 	@GET
-	public Long getId(@PathParam("name") @Api(description = "Login name of user") String name) {
+	public Long getUserId(@PathParam("name") @Api(description = "Login name of user") String name) {
 		var user = userManager.findByName(name);
 		if (user != null)
 			return user.getId();
@@ -308,87 +317,105 @@ public class UserResource {
 	
 	@Api(order=1900, description="Create new user")
     @POST
-    public Long create(@NotNull @Valid UserCreateData data) {
-		if (SecurityUtils.isAdministrator()) {
-			if (userManager.findByName(data.getName()) != null)
-				throw new ExplicitException("Login name is already used by another user");
-			if (!data.isServiceAccount() && emailAddressManager.findByValue(data.getEmailAddress()) != null)
-				throw new ExplicitException("Email address is already used by another user");
-			
-			User user = new User();
-			user.setServiceAccount(data.isServiceAccount());
-			user.setName(data.getName());
-			user.setFullName(data.getFullName());
-			if (data.isServiceAccount()) {
-				userManager.create(user);
-			} else {
-				user.setNotifyOwnEvents(data.isNotifyOwnEvents());
-				user.setPassword(passwordService.encryptPassword(data.getPassword()));
-				userManager.create(user);
-				EmailAddress emailAddress = new EmailAddress();
-				emailAddress.setGit(true);
-				emailAddress.setPrimary(true);
-				emailAddress.setOwner(user);
-				emailAddress.setValue(data.getEmailAddress());
-				emailAddress.setVerificationCode(null);
-				emailAddressManager.create(emailAddress);
-			}
-			return user.getId();
+    public Long createUser(@NotNull @Valid UserCreateData data) {
+		if (!SecurityUtils.isAdministrator()) 
+			throw new UnauthorizedException();
+
+		if (userManager.findByName(data.getName()) != null)
+			throw new ExplicitException("Login name is already used by another user");
+		if (!data.isServiceAccount() && emailAddressManager.findByValue(data.getEmailAddress()) != null)
+			throw new ExplicitException("Email address is already used by another user");
+		
+		User user = new User();
+		user.setServiceAccount(data.isServiceAccount());
+		user.setName(data.getName());
+		user.setFullName(data.getFullName());
+		if (data.isServiceAccount()) {
+			userManager.create(user);
 		} else {
-			throw new UnauthenticatedException();
+			user.setNotifyOwnEvents(data.isNotifyOwnEvents());
+			user.setPassword(passwordService.encryptPassword(data.getPassword()));
+			userManager.create(user);
+			EmailAddress emailAddress = new EmailAddress();
+			emailAddress.setGit(true);
+			emailAddress.setPrimary(true);
+			emailAddress.setOwner(user);
+			emailAddress.setValue(data.getEmailAddress());
+			emailAddress.setVerificationCode(null);
+			emailAddressManager.create(emailAddress);
 		}
+		
+		var newAuditContent = VersionedXmlDoc.fromBean(user).toXML();
+		auditManager.audit(null, "created account \"" + user.getName() + "\" via RESTful API", null, newAuditContent);
+
+		return user.getId();
     }
 	
-	@Api(order=1950, name="Update Basic Settings")
+	@Api(order=1950, name="Update user")
 	@Path("/{userId}")
     @POST
-    public Response updateBasicSetting(@PathParam("userId") Long userId, @NotNull @Valid BasicSettingUpdateData data) {
+    public Response updateUser(@PathParam("userId") Long userId, @NotNull @Valid UserUpdateData data) {
 		User user = userManager.load(userId);
-		if (SecurityUtils.isAdministrator() || user.equals(SecurityUtils.getAuthUser())) { 
-			User existingUser = userManager.findByName(data.getName());
-			if (existingUser != null && !existingUser.equals(user))
-				throw new ExplicitException("Login name is already used by another user");
+		if (!SecurityUtils.isAdministrator() && !user.equals(getAuthUser())) 
+			throw new UnauthorizedException();
 			
-			String oldName = user.getName();
-			user.setName(data.getName());
-			user.setFullName(data.getFullName());
-			if (!user.isServiceAccount())
-				user.setNotifyOwnEvents(data.isNotifyOwnEvents());
-			userManager.update(user, oldName);
-			return Response.ok().build();
-		} else { 
-			throw new UnauthenticatedException();
+		User existingUser = userManager.findByName(data.getName());
+		if (existingUser != null && !existingUser.equals(user))
+			throw new ExplicitException("Login name is already used by another user");
+
+		var oldData = new UserUpdateData();
+		oldData.setName(user.getName());
+		oldData.setFullName(user.getFullName());
+		oldData.setNotifyOwnEvents(user.isNotifyOwnEvents());
+
+		var oldAuditContent = VersionedXmlDoc.fromBean(oldData).toXML();			
+
+		String oldName = user.getName();
+		user.setName(data.getName());
+		user.setFullName(data.getFullName());
+		if (!user.isServiceAccount())
+			user.setNotifyOwnEvents(data.isNotifyOwnEvents());
+		userManager.update(user, oldName);
+
+		if (!getAuthUser().equals(user)) {
+			var newAuditContent = VersionedXmlDoc.fromBean(data).toXML();
+			auditManager.audit(null, "changed account \"" + user.getName() + "\" via RESTful API", oldAuditContent, newAuditContent);
 		}
+		
+		return Response.ok().build();
     }
 
 	@Api(order=1960, description="Disable user")
 	@Path("/{userId}/disable")
     @POST
-    public Response disable(@PathParam("userId") Long userId) {
-		if (SecurityUtils.isAdministrator()) { 	
-			if (userId <= User.ROOT_ID)		
-				throw new BadRequestException("Should only disable normal users");
-			var user = userManager.load(userId);
-			userManager.disable(user);
-			return Response.ok().build();
-		} else { 
-			throw new UnauthenticatedException();
-		}
+    public Response disableUser(@PathParam("userId") Long userId) {
+		if (!SecurityUtils.isAdministrator()) 
+			throw new UnauthorizedException();
+		
+		if (userId <= User.ROOT_ID)		
+			throw new BadRequestException("Should only disable normal users");
+		var user = userManager.load(userId);
+		userManager.disable(user);
+
+		auditManager.audit(null, "disabled account \"" + user.getName() + "\" via RESTful API", null, null);
+
+		return Response.ok().build();
     }
 
 	@Api(order=1970, description="Enable user")
 	@Path("/{userId}/enable")
     @POST
-    public Response enable(@PathParam("userId") Long userId) {
-		if (SecurityUtils.isAdministrator()) { 	
-			if (userId <= User.ROOT_ID)		
-				throw new BadRequestException("Should only enable normal users");
-			var user = userManager.load(userId);
-			userManager.enable(user);
-			return Response.ok().build();
-		} else { 
-			throw new UnauthenticatedException();
-		}
+    public Response enableUser(@PathParam("userId") Long userId) {
+		if (!SecurityUtils.isAdministrator()) 
+			throw new UnauthorizedException();
+		if (userId <= User.ROOT_ID)		
+			throw new BadRequestException("Should only enable normal users");
+		var user = userManager.load(userId);
+		userManager.enable(user);
+
+		auditManager.audit(null, "enabled account \"" + user.getName() + "\" via RESTful API", null, null);
+
+		return Response.ok().build();
     }
 	
 	@Api(order=2000)
@@ -399,12 +426,14 @@ public class UserResource {
 		if (SecurityUtils.isAdministrator()) {
 			user.setPassword(passwordService.encryptPassword(password));
 			userManager.update(user, null);
+			if (!getAuthUser().equals(user)) 
+				auditManager.audit(null, "changed password of account \"" + user.getName() + "\" via RESTful API", null, null);
 			return Response.ok().build();
 		} else if (user.isDisabled()) {
 			throw new ExplicitException("Can not set password for disabled user");
 		} else if (user.isServiceAccount()) {
 			throw new ExplicitException("Can not set password for service account");
-		} else if (user.equals(SecurityUtils.getAuthUser())) {
+		} else if (user.equals(getAuthUser())) {
 			if (user.getPassword() == null) {
 				throw new ExplicitException("The user is currently authenticated via external system, "
 						+ "please change password there instead");
@@ -422,16 +451,18 @@ public class UserResource {
 	@Path("/{userId}/two-factor-authentication")
 	@DELETE
 	public Response resetTwoFactorAuthentication(@PathParam("userId") Long userId) {
-		User user = userManager.load(userId);
-		if (!SecurityUtils.isAdministrator()) {
+		if (!SecurityUtils.isAdministrator()) 
 			throw new UnauthorizedException();
-		} else if (user.isDisabled()) {
+
+		User user = userManager.load(userId);		
+		if (user.isDisabled()) {
 			throw new ExplicitException("Can not reset two factor authentication for disabled user");
 		} else if (user.isServiceAccount()) {
 			throw new ExplicitException("Can not reset two factor authentication for service account");
 		} else {
 			user.setTwoFactorAuthentication(null);
 			userManager.update(user, null);
+			auditManager.audit(null, "reset two factor authentication of account \"" + user.getName() + "\" via RESTful API", null, null);
 			return Response.ok().build();
 		}
 	}
@@ -441,12 +472,16 @@ public class UserResource {
     @POST
     public Response setQueriesAndWatches(@PathParam("userId") Long userId, @NotNull QueriesAndWatches queriesAndWatches) {
     	User user = userManager.load(userId);
-    	if (!SecurityUtils.isAdministrator() && !user.equals(SecurityUtils.getAuthUser())) 
+    	if (!SecurityUtils.isAdministrator() && !user.equals(getAuthUser())) 
 			throw new UnauthorizedException();
-		else if (user.isDisabled()) 
+
+		if (user.isDisabled()) 
 			throw new ExplicitException("Can not set queries and watches for disabled user");
 		else if (user.isServiceAccount()) 
 			throw new ExplicitException("Can not set queries and watches for service account");
+
+		var oldAuditContent = VersionedXmlDoc.fromBean(getQueriesAndWatches(user)).toXML();
+
 		user.setBuildQuerySubscriptions(queriesAndWatches.buildQuerySubscriptions);
 		user.setIssueQueryWatches(queriesAndWatches.issueQueryWatches);
 		user.setPullRequestQueryWatches(queriesAndWatches.pullRequestQueryWatches);
@@ -456,6 +491,12 @@ public class UserResource {
 		user.setProjectQueries(queriesAndWatches.projectQueries);
 		user.setPullRequestQueries(queriesAndWatches.pullRequestQueries);
 		userManager.update(user, null);
+
+		if (!getAuthUser().equals(user)) {
+			var newAuditContent = VersionedXmlDoc.fromBean(queriesAndWatches).toXML();
+			auditManager.audit(null, "changed queries and watches of account \"" + user.getName() + "\" via RESTful API", oldAuditContent, newAuditContent);
+		}
+
 		return Response.ok().build();
     }
 	
@@ -464,37 +505,109 @@ public class UserResource {
 	@POST
 	public Long addSshKey(@PathParam("userId") Long userId, @NotNull String content) {
 		User user = userManager.load(userId);
-		if (!SecurityUtils.isAdministrator() && !user.equals(SecurityUtils.getAuthUser()))
+		if (!SecurityUtils.isAdministrator() && !user.equals(getAuthUser()))
 			throw new UnauthorizedException();
-		else if (user.isDisabled())
+		
+		if (user.isDisabled())
 			throw new ExplicitException("Can not add ssh key for disabled user");
 
 		SshKey sshKey = new SshKey();
 		sshKey.setContent(content);
 		sshKey.setCreatedAt(new Date());
 		sshKey.setOwner(user);
-		sshKey.fingerprint();
+		sshKey.generateFingerprint();
         
 		sshKeyManager.create(sshKey);
+
+		if (!getAuthUser().equals(user)) {
+			var newAuditContent = VersionedXmlDoc.fromBean(sshKey).toXML();
+			auditManager.audit(null, "added ssh key to account \"" + user.getName() + "\" via RESTful API", null, newAuditContent);
+		}
+
 		return sshKey.getId();
 	}
 	
 	@Api(order=2300)
 	@Path("/{userId}")
     @DELETE
-    public Response delete(@PathParam("userId") Long userId) {
+    public Response deleteUser(@PathParam("userId") Long userId) {
     	if (!SecurityUtils.isAdministrator())
 			throw new UnauthorizedException();
+
     	User user = userManager.load(userId);
     	if (user.isRoot())
 			throw new ExplicitException("Root user can not be deleted");
-    	else if (user.equals(SecurityUtils.getAuthUser()))
+    	else if (user.equals(getAuthUser()))
     		throw new ExplicitException("Can not delete yourself");
     	else
     		userManager.delete(user);
+
+		var oldAuditContent = VersionedXmlDoc.fromBean(getData(user)).toXML();
+		auditManager.audit(null, "deleted account \"" + user.getName() + "\" via RESTful API", oldAuditContent, null);
+
     	return Response.ok().build();
     }
 
+	public static class UserData implements Serializable {
+
+		private static final long serialVersionUID = 1L;
+		
+		@Api(order=10, description="Whether or not the user is disabled")
+		private boolean disabled;
+
+		@Api(order=50, description="Whether or not the user is a service account")
+		private boolean serviceAccount;
+
+		@Api(order=100, description="Login name of the user")
+		private String name;
+		
+		@Api(order=200)
+		private String fullName;
+
+		@Api(order=300, description = "Whether or not to notify user on own events. Only meaningful for non service account")
+		private boolean notifyOwnEvents;
+
+		public boolean isDisabled() {
+			return disabled;
+		}
+
+		public void setDisabled(boolean disabled) {
+			this.disabled = disabled;
+		}
+
+		public boolean isServiceAccount() {
+			return serviceAccount;
+		}
+
+		public void setServiceAccount(boolean serviceAccount) {
+			this.serviceAccount = serviceAccount;
+		}
+
+		public String getName() {
+			return name;
+		}
+
+		public void setName(String name) {
+			this.name = name;
+		}
+
+		public String getFullName() {
+			return fullName;
+		}
+
+		public void setFullName(String fullName) {
+			this.fullName = fullName;
+		}
+
+		public boolean isNotifyOwnEvents() {
+			return notifyOwnEvents;
+		}
+
+		public void setNotifyOwnEvents(boolean notifyOwnEvents) {
+			this.notifyOwnEvents = notifyOwnEvents;
+		}
+	}
+
 	@EntityCreate(User.class)
 	public static class UserCreateData implements Serializable {
 
@@ -577,66 +690,7 @@ public class UserResource {
 		}
 	}
 
-	public static class BasicSetting implements Serializable {
-		private static final long serialVersionUID = 1L;
-		
-		@Api(order=10, description="Whether or not the user is disabled")
-		private boolean disabled;
-
-		@Api(order=50, description="Whether or not the user is a service account")
-		private boolean serviceAccount;
-
-		@Api(order=100, description="Login name of the user")
-		private String name;
-		
-		@Api(order=200)
-		private String fullName;
-
-		@Api(order=300, description = "Whether or not to notify user on own events. Only meaningful for non service account")
-		private boolean notifyOwnEvents;
-
-		public boolean isDisabled() {
-			return disabled;
-		}
-
-		public void setDisabled(boolean disabled) {
-			this.disabled = disabled;
-		}
-
-		public boolean isServiceAccount() {
-			return serviceAccount;
-		}
-
-		public void setServiceAccount(boolean serviceAccount) {
-			this.serviceAccount = serviceAccount;
-		}
-
-		public String getName() {
-			return name;
-		}
-
-		public void setName(String name) {
-			this.name = name;
-		}
-
-		public String getFullName() {
-			return fullName;
-		}
-
-		public void setFullName(String fullName) {
-			this.fullName = fullName;
-		}
-
-		public boolean isNotifyOwnEvents() {
-			return notifyOwnEvents;
-		}
-
-		public void setNotifyOwnEvents(boolean notifyOwnEvents) {
-			this.notifyOwnEvents = notifyOwnEvents;
-		}
-	}
-
-	public static class BasicSettingUpdateData implements Serializable {
+	public static class UserUpdateData implements Serializable {
 
 		private static final long serialVersionUID = 1L;
 		

server-core/src/main/java/io/onedev/server/util/ProjectScope.java

@@ -1,6 +1,12 @@
 package io.onedev.server.util;
 
+import java.util.ArrayList;
 import java.util.Collection;
+import java.util.List;
+
+import javax.persistence.criteria.CriteriaBuilder;
+import javax.persistence.criteria.From;
+import javax.persistence.criteria.Predicate;
 
 import io.onedev.server.model.Project;
 import io.onedev.server.model.support.ProjectBelonging;
@@ -42,4 +48,16 @@ public class ProjectScope {
 		}
 	}
 	
+	public Predicate buildPredicates(CriteriaBuilder builder, From<Project, Project> root) {
+		List<Predicate> predicates = new ArrayList<>();
+		predicates.add(builder.equal(root, getProject()));
+		if (isInherited()) {
+			for (var ancestor: getProject().getAncestors()) 
+				predicates.add(builder.equal(root, ancestor));
+		}
+		if (isRecursive()) 
+			predicates.add(builder.like(root.get(Project.PROP_PATH), getProject().getPath() + "/%"));
+		return builder.or(predicates.toArray(new Predicate[0]));
+	}
+
 }

server-core/src/main/java/io/onedev/server/util/jackson/hibernate/EntityDeserializer.java

@@ -1,5 +1,10 @@
 package io.onedev.server.util.jackson.hibernate;
 
+import java.io.IOException;
+import java.util.Stack;
+
+import org.hibernate.proxy.HibernateProxy;
+
 import com.fasterxml.jackson.core.JsonParser;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.core.JsonToken;
@@ -8,13 +13,11 @@ import com.fasterxml.jackson.databind.DeserializationContext;
 import com.fasterxml.jackson.databind.deser.BeanDeserializer;
 import com.fasterxml.jackson.databind.deser.SettableBeanProperty;
 import com.google.common.base.Preconditions;
+
+import io.onedev.server.data.migration.VersionedXmlDoc;
 import io.onedev.server.model.AbstractEntity;
 import io.onedev.server.persistence.dao.Dao;
 import io.onedev.server.rest.annotation.Immutable;
-import org.hibernate.proxy.HibernateProxy;
-
-import java.io.IOException;
-import java.util.Stack;
 
 public class EntityDeserializer extends BeanDeserializer {
 
@@ -52,7 +55,7 @@ public class EntityDeserializer extends BeanDeserializer {
 				&& paramsStack.get().peek()[0] instanceof Long) {
 			Long entityId = (Long) paramsStack.get().peek()[0];
 			AbstractEntity entity = dao.load(entityClass, entityId);
-			entity.setOldVersion(entity.getFacade());
+			entity.setOldVersion(VersionedXmlDoc.fromBean(entity));
 
 			Object bean;
 			if (entity instanceof HibernateProxy)

server-core/src/main/java/io/onedev/server/util/xstream/ObjectMap.java

@@ -0,0 +1,7 @@
+package io.onedev.server.util.xstream;
+
+import java.util.LinkedHashMap;
+
+public class ObjectMap extends LinkedHashMap<String, Object> {
+    
+}

server-core/src/main/java/io/onedev/server/util/xstream/ObjectMapperConverter.java

@@ -0,0 +1,36 @@
+package io.onedev.server.util.xstream;
+
+import java.util.Map;
+
+import com.thoughtworks.xstream.converters.Converter;
+import com.thoughtworks.xstream.converters.MarshallingContext;
+import com.thoughtworks.xstream.converters.UnmarshallingContext;
+import com.thoughtworks.xstream.io.HierarchicalStreamReader;
+import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
+
+public class ObjectMapperConverter implements Converter {
+
+	@SuppressWarnings("rawtypes")
+	@Override
+	public boolean canConvert(Class type) {
+		return type == ObjectMap.class;
+	}
+
+	@Override
+	public void marshal(Object source, HierarchicalStreamWriter writer, MarshallingContext context) {
+		ObjectMap map = (ObjectMap) source;
+		for (Map.Entry<String, Object> entry : map.entrySet()) {
+			if (entry.getValue() != null) {
+				writer.startNode(entry.getKey());			
+				context.convertAnother(entry.getValue());
+				writer.endNode();
+			}
+		}
+	}
+
+	@Override
+	public Object unmarshal(HierarchicalStreamReader reader, UnmarshallingContext context) {
+		throw new UnsupportedOperationException();
+	}
+
+}

server-core/src/main/java/io/onedev/server/web/asset/icon/audit.svg

@@ -0,0 +1 @@
+<?xml version="1.0" standalone="no"?><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"><svg t="1750603967318" class="icon" viewBox="0 0 1024 1024" version="1.1" xmlns="http://www.w3.org/2000/svg" p-id="11693" xmlns:xlink="http://www.w3.org/1999/xlink" width="200" height="200"><path d="M411.605333 180.394667c-26.581333 20.096-48.469333 54.144-48.469333 115.114666 0 60.885333 21.162667 96.938667 42.709333 123.477334a417.024 417.024 0 0 0 20.992 23.722666c4.693333 5.12 9.813333 10.538667 14.208 15.658667 9.557333 11.093333 26.666667 31.914667 26.666667 59.605333v4.138667c0 16.938667 0.042667 36.565333-3.754667 51.413333-2.346667 9.386667-7.509333 22.570667-19.882666 32.853334-12.885333 10.666667-27.477333 13.226667-38.613334 13.226666H213.418667L213.333333 725.333333h597.333334v-105.770666h-191.317334c-4.693333 0-18.005333 0-30.933333-7.509334a53.845333 53.845333 0 0 1-24.746667-34.005333 126.805333 126.805333 0 0 1-3.157333-27.008c-0.298667-8.746667-0.298667-19.626667-0.298667-32.426667v-0.64c0-28.330667 14.208-49.408 25.856-63.701333 5.845333-7.168 12.458667-14.208 18.261334-20.437333l0.298666-0.298667c6.186667-6.656 11.946667-12.842667 17.706667-19.626667 21.205333-25.002667 41.898667-57.898667 41.898667-118.4 0-62.549333-20.48-96.554667-44.458667-115.968-25.6-20.778667-61.824-30.208-100.949333-30.208-39.253333 0-78.677333 9.514667-107.221334 31.061334zM360.149333 112.341333C408.32 75.946667 468.053333 64 518.826667 64c50.901333 0 108.714667 12.032 154.666666 49.194667 47.530667 38.528 76.074667 98.944 76.074667 182.314666 0 85.461333-31.317333 137.173333-62.122667 173.568-7.082667 8.362667-14.08 15.872-20.010666 22.186667l-0.426667 0.512a346.752 346.752 0 0 0-14.805333 16.469333 37.802667 37.802667 0 0 0-6.656 9.984v16h186.453333a64 64 0 0 1 64 64V768a42.666667 42.666667 0 0 1-42.666667 42.666667H170.666667a42.666667 42.666667 0 0 1-42.666667-42.666667l0.085333-169.813333a64 64 0 0 1 64-63.957334H382.293333l0.085334-12.458666a78.72 78.72 0 0 0-6.016-7.722667c-3.285333-3.84-6.912-7.722667-11.434667-12.586667a500.224 500.224 0 0 1-25.301333-28.629333c-30.72-37.802667-61.866667-92.245333-61.866667-177.322667 0.042667-84.906667 32.341333-145.322667 82.389333-183.168zM128 896a42.666667 42.666667 0 0 1 42.666667-42.666667h682.666666a42.666667 42.666667 0 1 1 0 85.333334H170.666667a42.666667 42.666667 0 0 1-42.666667-42.666667z" p-id="11694"></path></svg>

server-core/src/main/java/io/onedev/server/web/component/audit/AuditListPanel.html

@@ -0,0 +1,34 @@
+<wicket:panel>
+    <div class="audit-list no-autofocus">
+        <div class="head align-items-center d-none d-lg-flex">
+            <div class="clearable-wrapper date-range mr-2">
+            <input wicket:id="dateRange" t:placeholder="Filter date range" class="form-control form-control-sm">
+            </div>
+            <input wicket:id="users" type="hidden" t:placeholder="Filter users" class="form-control form-control-sm users mr-2">
+            <div class="clearable-wrapper action mr-2">
+            <input wicket:id="action" t:placeholder="Filter actions" class="form-control form-control-sm">
+            </div>
+        </div>
+        <ul class="body list-unstyled mb-0">
+            <li wicket:id="audits" class="audit"></li>
+            <li wicket:id="more" class="mt-3"><a wicket:id="link" class="btn btn-primary btn-sm"><wicket:t>More</wicket:t></a></li>
+        </ul>
+        <div wicket:id="noAudits" class="alert alert-light mt-4"><wicket:t>No audits</wicket:t></div>
+    </div>
+    <wicket:fragment wicket:id="dateFrag">
+        <h6 class="mt-4 mb-3 d-flex align-items-center font-weight-bold font-size-lg">
+            <wicket:svg href="calendar" class="icon mr-2"/> <span wicket:id="date"></span>
+        </h6>
+    </wicket:fragment>
+    <wicket:fragment wicket:id="auditFrag">
+        <div class="ml-4 mt-2">
+            <span wicket:id="time" class="text-monospace mr-2"></span>
+            <a wicket:id="user"></a> 
+            <span wicket:id="action"></span>
+            <a wicket:id="diff" title="Show change detail"><wicket:svg href="diff2" class="icon"/></a>
+        </div>
+    </wicket:fragment>
+    <wicket:fragment wicket:id="diffFrag">
+        <div wicket:id="content" class="p-3 audit-change-detail"></div>
+    </wicket:fragment>
+</wicket:panel>

server-core/src/main/java/io/onedev/server/web/component/audit/AuditListPanel.java

@@ -0,0 +1,283 @@
+package io.onedev.server.web.component.audit;
+
+import java.time.LocalDate;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import javax.annotation.Nullable;
+
+import org.apache.wicket.Component;
+import org.apache.wicket.ajax.AjaxRequestTarget;
+import org.apache.wicket.ajax.form.AjaxFormComponentUpdatingBehavior;
+import org.apache.wicket.ajax.markup.html.AjaxLink;
+import org.apache.wicket.markup.head.CssHeaderItem;
+import org.apache.wicket.markup.head.IHeaderResponse;
+import org.apache.wicket.markup.head.JavaScriptHeaderItem;
+import org.apache.wicket.markup.html.WebMarkupContainer;
+import org.apache.wicket.markup.html.basic.Label;
+import org.apache.wicket.markup.html.form.TextField;
+import org.apache.wicket.markup.html.panel.Fragment;
+import org.apache.wicket.markup.html.panel.Panel;
+import org.apache.wicket.markup.repeater.RepeatingView;
+import org.apache.wicket.model.IModel;
+import org.apache.wicket.model.LoadableDetachableModel;
+import org.apache.wicket.model.Model;
+
+import com.google.common.base.Splitter;
+
+import io.onedev.server.OneDev;
+import io.onedev.server.entitymanager.AuditManager;
+import io.onedev.server.entitymanager.UserManager;
+import io.onedev.server.entitymanager.support.AuditQuery;
+import io.onedev.server.model.Audit;
+import io.onedev.server.model.Project;
+import io.onedev.server.model.User;
+import io.onedev.server.util.DateRange;
+import io.onedev.server.util.DateUtils;
+import io.onedev.server.util.diff.DiffRenderer;
+import io.onedev.server.util.diff.DiffUtils;
+import io.onedev.server.web.asset.diff.DiffResourceReference;
+import io.onedev.server.web.component.datepicker.DateRangePicker;
+import io.onedev.server.web.component.floating.FloatingPanel;
+import io.onedev.server.web.component.link.DropdownLink;
+import io.onedev.server.web.component.user.choice.UserMultiChoice;
+import io.onedev.server.web.component.user.ident.Mode;
+import io.onedev.server.web.component.user.ident.UserIdentPanel;
+
+public abstract class AuditListPanel extends Panel {
+    
+    private static final int PAGE_SIZE = 100;
+
+    private final IModel<List<Audit>> auditsModel = new LoadableDetachableModel<List<Audit>>() {
+
+        @Override
+        protected List<Audit> load() {
+            return getAuditManager().query(getProject(), buildQuery(), currentPage * PAGE_SIZE, PAGE_SIZE);
+        }
+        
+    };
+
+    private final IModel<Integer> countModel = new LoadableDetachableModel<Integer>() {
+
+        @Override
+        protected Integer load() {
+            return getAuditManager().count(getProject(), buildQuery());
+        }
+
+    };
+
+    private RepeatingView auditsView;
+
+    private int currentPage;
+
+    private LocalDate currentDate;
+
+    private DateRange dateRange;
+
+    private List<String> userNames;
+
+    private String action;
+
+    public AuditListPanel(String id, List<String> userNames, @Nullable DateRange dateRange, @Nullable String action) {
+        super(id);
+        this.userNames = userNames;
+        this.dateRange = dateRange;
+        this.action = action;
+    }
+
+    private AuditQuery buildQuery() {
+        Date sinceDate = null;
+        Date untilDate = null;
+        if (dateRange != null) {
+            sinceDate = DateUtils.toDate(dateRange.getFrom().atStartOfDay());
+            untilDate = DateUtils.toDate(dateRange.getTo().atTime(23, 59, 59));
+        }        
+        return new AuditQuery(getUsers(), sinceDate, untilDate, action);
+    }
+
+    private void updateAuditList(AjaxRequestTarget target) {
+        var newPanel = new AuditListPanel(getId(), userNames, dateRange, action) {
+
+            @Override
+            protected void onQueryUpdated(AjaxRequestTarget target, @Nullable DateRange dateRange, List<String> userNames, @Nullable String action) {
+                AuditListPanel.this.onQueryUpdated(target, dateRange, userNames, action);
+            }
+
+            @Override
+            protected Project getProject() {
+                return AuditListPanel.this.getProject();
+            }
+
+        };
+        replaceWith(newPanel);
+        target.add(newPanel);
+    }
+
+    private List<User> getUsers() {
+        return userNames.stream().map(getUserManager()::findByName).collect(Collectors.toList());
+    }
+
+    @Override
+    protected void onInitialize() {
+        super.onInitialize();
+
+        var dateRangePicker = new DateRangePicker("dateRange", Model.of(dateRange));
+        dateRangePicker.add(new AjaxFormComponentUpdatingBehavior("change clear") {
+
+            @Override
+            protected void onUpdate(AjaxRequestTarget target) {
+                dateRange = dateRangePicker.getModelObject();
+                updateAuditList(target);
+                onQueryUpdated(target, dateRange, userNames, action);
+            }
+
+        });
+        add(dateRangePicker);
+
+        var usersChoice = new UserMultiChoice("users", Model.of(getUsers()), Model.ofList(getUserManager().query()));
+        usersChoice.add(new AjaxFormComponentUpdatingBehavior("change") {
+            @Override
+            protected void onUpdate(AjaxRequestTarget target) {
+                userNames = usersChoice.getModelObject().stream().map(User::getName).collect(Collectors.toList());
+                updateAuditList(target);
+                onQueryUpdated(target, dateRange, userNames, action);
+            }
+        });
+        add(usersChoice);
+
+        var actionInput = new TextField<String>("action", Model.of(action));
+        actionInput.add(new AjaxFormComponentUpdatingBehavior("change clear") {
+            @Override
+            protected void onUpdate(AjaxRequestTarget target) {
+                action = actionInput.getModelObject();
+                updateAuditList(target);
+                onQueryUpdated(target, dateRange, userNames, action);
+            }
+        });
+        add(actionInput);
+
+        auditsView = new RepeatingView("audits");
+        for (var audit: auditsModel.getObject()) {
+            for (var row: newAuditRows(auditsView, audit)) {
+                auditsView.add(row);
+            }
+        }
+
+        add(auditsView);
+
+        var moreContainer = new WebMarkupContainer("more") {
+
+            @Override
+            protected void onConfigure() {
+                super.onConfigure();
+                setVisible(PAGE_SIZE * (currentPage + 1) < countModel.getObject());
+            }
+
+        };
+        moreContainer.setOutputMarkupId(true);
+        
+        moreContainer.add(new AjaxLink<Void>("link") {
+
+            @SuppressWarnings("deprecation")
+            @Override
+            public void onClick(AjaxRequestTarget target) {
+                target.add(moreContainer);
+                currentPage++;
+                for (var audit: auditsModel.getObject()) {
+                    for (var row: newAuditRows(auditsView, audit)) {
+                        var script = String.format("$('#%s').after('<li id=\"%s\"></li>');", auditsView.get(auditsView.size() - 1).getMarkupId(), row.getMarkupId());
+                        target.prependJavaScript(script);
+                        auditsView.add(row);
+                        target.add(row);                        
+                    }
+                }
+                target.focusComponent(null);
+            }
+
+        });
+        add(moreContainer);
+
+        add(new WebMarkupContainer("noAudits") {
+            @Override
+            protected void onConfigure() {
+                super.onConfigure();
+                setVisible(countModel.getObject() == 0);
+            }
+        });
+
+        setOutputMarkupId(true);
+    }
+
+    private UserManager getUserManager() {
+        return OneDev.getInstance(UserManager.class);
+    }
+
+    private AuditManager getAuditManager() {
+        return OneDev.getInstance(AuditManager.class);
+    }
+
+    @Override
+    protected void onDetach() {
+        auditsModel.detach();
+        countModel.detach();
+        super.onDetach();
+    }
+
+    @Override
+    public void renderHead(IHeaderResponse response) {
+        super.renderHead(response);
+        response.render(JavaScriptHeaderItem.forReference(new DiffResourceReference()));
+        response.render(CssHeaderItem.forReference(new AuditLogCssResourceReference()));
+    }
+
+    private List<Component> newAuditRows(RepeatingView auditsView, Audit audit) {
+        var rows = new ArrayList<Component>();
+        var auditDate = DateUtils.toLocalDate(audit.getDate());
+        if (currentDate == null || !currentDate.equals(auditDate)) {
+            currentDate = auditDate;
+            var fragment = new Fragment(auditsView.newChildId(), "dateFrag", this);            
+            fragment.add(new Label("date", currentDate.format(DateUtils.DATE_FORMATTER)));
+            fragment.setOutputMarkupId(true);
+            rows.add(fragment);
+        }
+        var fragment = new Fragment(auditsView.newChildId(), "auditFrag", this);            
+        fragment.add(new Label("time", DateUtils.formatTime(audit.getDate())));
+        fragment.add(new UserIdentPanel("user", audit.getUser(), Mode.AVATAR_AND_NAME));
+        fragment.add(new Label("action", audit.getAction()));
+        var oldContent = audit.getOldContent();
+        var newContent = audit.getNewContent();
+        fragment.add(new DropdownLink("diff") {
+
+            @Override
+            protected Component newContent(String id, FloatingPanel dropdown) {
+                List<String> oldLines = new ArrayList<>();
+                if (oldContent != null)
+                    oldLines = Splitter.on('\n').splitToList(oldContent);
+                List<String> newLines = new ArrayList<>();
+                if (newContent != null)
+                    newLines = Splitter.on('\n').splitToList(newContent);
+                var fragment = new Fragment(id, "diffFrag", AuditListPanel.this);
+                fragment.add(new Label("content", new DiffRenderer(DiffUtils.diff(oldLines, newLines)).renderDiffs()).setEscapeModelStrings(false));
+                return fragment;
+            }
+
+            @Override
+            protected void onConfigure() {
+                super.onConfigure();
+                setVisible(oldContent != null || newContent != null);
+            }
+
+        });
+        fragment.setOutputMarkupId(true);
+        rows.add(fragment);
+        return rows;
+    }
+
+    @Nullable
+    protected abstract Project getProject();
+
+    protected abstract void onQueryUpdated(AjaxRequestTarget target, @Nullable DateRange dateRange, List<String> userNames, @Nullable String action);
+    
+}

server-core/src/main/java/io/onedev/server/web/component/audit/AuditLogCssResourceReference.java

@@ -0,0 +1,12 @@
+package io.onedev.server.web.component.audit;
+
+import io.onedev.server.web.page.base.BaseDependentCssResourceReference;
+
+public class AuditLogCssResourceReference extends BaseDependentCssResourceReference {
+
+	private static final long serialVersionUID = 1L;
+
+	public AuditLogCssResourceReference() {
+		super(AuditLogCssResourceReference.class, "audit-list.css");
+	}
+}

server-core/src/main/java/io/onedev/server/web/component/audit/audit-list.css

@@ -0,0 +1,68 @@
+.audit-list>.head>.date-range, .audit-list>.head>.users {
+    width: 30%;
+}
+.audit-list>.head>.action {
+    width: 40%;
+}
+.audit-list .body {
+    position: relative;
+    padding-left: 20px;
+    margin-left: 4px;
+}
+
+.audit-list .body::before {
+    content: '';
+    position: absolute;
+    left: 0;
+    top: 0;
+    bottom: 0;
+    width: 2px;
+    background-color: var(--secondary);
+}
+
+.dark-mode .audit-list .body::before {
+    background-color: var(--dark-mode-lighter-dark);
+}
+
+.audit-list .body li {
+    position: relative;
+    margin-bottom: 1.5rem;
+}
+
+.audit-list .body li.audit::before {
+    content: '';
+    position: absolute;
+    left: -24px;
+    top: 50%;
+    transform: translateY(-50%);
+    width: 10px;
+    height: 10px;
+    border-radius: 50%;
+    background-color: var(--secondary);
+    border: 2px solid #fff;
+    box-shadow: 0 0 0 2px var(--secondary);
+}
+
+.dark-mode .audit-list .body li.audit::before {
+    background-color: var(--dark-mode-lighter-dark);
+    border-color: var(--dark-mode-darker);
+    box-shadow: 0 0 0 2px var(--dark-mode-lighter-dark);
+}
+
+.audit-list .body li:last-child {
+    margin-bottom: 0;
+}
+
+.audit-list .body li[wicket\:id="more"]::before {
+    background-color: var(--secondary);
+    box-shadow: 0 0 0 2px var(--secondary);
+}
+
+.dark-mode .audit-list .body li[wicket\:id="more"]::before {
+    background-color: var(--dark-mode-lighter-dark);
+    box-shadow: 0 0 0 2px var(--dark-mode-lighter-dark);
+}
+
+.audit-change-detail {
+    max-width: 900px;
+}

server-core/src/main/java/io/onedev/server/web/component/build/list/BuildListPanel.java

@@ -54,6 +54,8 @@ import com.google.common.collect.Sets;
 
 import io.onedev.commons.utils.ExplicitException;
 import io.onedev.server.OneDev;
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.entitymanager.BuildManager;
 import io.onedev.server.entitymanager.BuildParamManager;
 import io.onedev.server.entitymanager.ProjectManager;
@@ -65,6 +67,7 @@ import io.onedev.server.model.Build;
 import io.onedev.server.model.Build.Status;
 import io.onedev.server.model.Project;
 import io.onedev.server.model.support.administration.GlobalBuildSetting;
+import io.onedev.server.persistence.TransactionManager;
 import io.onedev.server.search.entity.EntityQuery;
 import io.onedev.server.search.entity.EntitySort;
 import io.onedev.server.search.entity.EntitySort.Direction;
@@ -160,6 +163,18 @@ public abstract class BuildListPanel extends Panel {
 	private BuildManager getBuildManager() {
 		return OneDev.getInstance(BuildManager.class);
 	}
+
+	private ProjectManager getProjectManager() {
+		return OneDev.getInstance(ProjectManager.class);
+	}
+
+	private TransactionManager getTransactionManager() {
+		return OneDev.getInstance(TransactionManager.class);
+	}
+
+	private AuditManager getAuditManager() {
+		return OneDev.getInstance(AuditManager.class);
+	}
 	
 	@Nullable
 	private BuildQuery parse(@Nullable String queryString, BuildQuery baseQuery) {
@@ -445,10 +460,17 @@ public abstract class BuildListPanel extends Panel {
 									
 									@Override
 									protected void onConfirm(AjaxRequestTarget target) {
-										Collection<Build> builds = new ArrayList<>();
-										for (IModel<Build> each: selectionColumn.getSelections())
-											builds.add(each.getObject());
-										OneDev.getInstance(BuildManager.class).delete(builds);
+										getTransactionManager().run(()-> {
+											Collection<Build> builds = new ArrayList<>();
+											for (IModel<Build> each: selectionColumn.getSelections())
+												builds.add(each.getObject());
+											getBuildManager().delete(builds);
+											for (var build: builds) {
+												var oldAuditContent = VersionedXmlDoc.fromBean(build).toXML();
+												getAuditManager().audit(build.getProject(), "deleted build \"" + build.getReference().toString(build.getProject()) + "\"", oldAuditContent, null);
+											}												
+										});
+
 										target.add(countLabel);
 										target.add(body);
 										selectionColumn.getSelections().clear();
@@ -655,11 +677,17 @@ public abstract class BuildListPanel extends Panel {
 									
 									@Override
 									protected void onConfirm(AjaxRequestTarget target) {
-										Collection<Build> builds = new ArrayList<>();
-										for (Iterator<Build> it = (Iterator<Build>) dataProvider.iterator(0, buildsTable.getItemCount()); it.hasNext();) {
-											builds.add(it.next());
-										}
-										OneDev.getInstance(BuildManager.class).delete(builds);
+										getTransactionManager().run(()-> {
+											Collection<Build> builds = new ArrayList<>();
+											for (Iterator<Build> it = (Iterator<Build>) dataProvider.iterator(0, buildsTable.getItemCount()); it.hasNext();) {
+												builds.add(it.next());
+											}
+											getBuildManager().delete(builds);
+											for (var build: builds) {
+												var oldAuditContent = VersionedXmlDoc.fromBean(build).toXML();
+												getAuditManager().audit(build.getProject(), "deleted build \"" + build.getReference().toString(build.getProject()) + "\"", oldAuditContent, null);
+											}												
+										});
 										dataProvider.detach();
 										target.add(countLabel);
 										target.add(body);
@@ -763,11 +791,17 @@ public abstract class BuildListPanel extends Panel {
 					protected void onSubmit(AjaxRequestTarget target, Form<?> form) {
 						super.onSubmit(target, form);
 						if (getProject() != null) {
+							var oldAuditContent = VersionedXmlDoc.fromBean(getProject().getBuildSetting().getListParams(true)).toXML();
 							getProject().getBuildSetting().setListParams(listParams);
-							OneDev.getInstance(ProjectManager.class).update(getProject());
+							var newAuditContent = VersionedXmlDoc.fromBean(getProject().getBuildSetting().getListParams(true)).toXML();
+							getProjectManager().update(getProject());
+							getAuditManager().audit(getProject(), "changed display params of build list", oldAuditContent, newAuditContent);
 						} else {
+							var oldAuditContent = VersionedXmlDoc.fromBean(getGlobalBuildSetting().getListParams()).toXML();
 							getGlobalBuildSetting().setListParams(listParams);
+							var newAuditContent = VersionedXmlDoc.fromBean(getGlobalBuildSetting().getListParams()).toXML();
 							OneDev.getInstance(SettingManager.class).saveBuildSetting(getGlobalBuildSetting());
+							getAuditManager().audit(null, "changed display params of build list", oldAuditContent, newAuditContent);
 						}
 						setResponsePage(getPage().getClass(), getPage().getPageParameters());
 					}
@@ -779,8 +813,11 @@ public abstract class BuildListPanel extends Panel {
 					@Override
 					public void onClick(AjaxRequestTarget target) {
 						modal.close();
+						var oldAuditContent = VersionedXmlDoc.fromBean(getProject().getBuildSetting().getListParams(true)).toXML();
 						getProject().getBuildSetting().setListParams(null);
-						OneDev.getInstance(ProjectManager.class).update(getProject());
+						var newAuditContent = VersionedXmlDoc.fromBean(getProject().getBuildSetting().getListParams(true)).toXML();
+						getProjectManager().update(getProject());
+						getAuditManager().audit(getProject(), "changed display params of build list", oldAuditContent, newAuditContent);
 						target.add(body);
 					}
 					
@@ -937,9 +974,8 @@ public abstract class BuildListPanel extends Panel {
 
 						@Override
 						protected List<Project> load() {
-							ProjectManager projectManager = OneDev.getInstance(ProjectManager.class);
 							List<Project> projects = new ArrayList<>(SecurityUtils.getAuthorizedProjects(new JobPermission(null, new RunJob())));
-							projects.sort(projectManager.cloneCache().comparingPath());
+							projects.sort(getProjectManager().cloneCache().comparingPath());
 							return projects;
 						}
 
@@ -1274,7 +1310,7 @@ public abstract class BuildListPanel extends Panel {
 		new FloatingPanel(target, alignment, true, true, null) {
 
 			private Project getRevisionProject() {
-				return OneDev.getInstance(ProjectManager.class).load(projectId);
+				return getProjectManager().load(projectId);
 			}
 			
 			@Override

server-core/src/main/java/io/onedev/server/web/component/codecomment/CodeCommentPanel.java

@@ -45,6 +45,8 @@ import com.google.common.collect.Sets;
 import io.onedev.server.OneDev;
 import io.onedev.server.attachment.AttachmentSupport;
 import io.onedev.server.attachment.ProjectAttachmentSupport;
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.entitymanager.CodeCommentManager;
 import io.onedev.server.entitymanager.CodeCommentReplyManager;
 import io.onedev.server.entitymanager.CodeCommentStatusChangeManager;
@@ -357,6 +359,8 @@ public abstract class CodeCommentPanel extends Panel {
 			public void onClick(AjaxRequestTarget target) {
 				onDeleteComment(target, getComment());
 				OneDev.getInstance(CodeCommentManager.class).delete(getComment());
+				var oldAuditContent = VersionedXmlDoc.fromBean(getComment()).toXML();
+				OneDev.getInstance(AuditManager.class).audit(getComment().getProject(), "deleted code comment on file \"" + getComment().getMark().getPath() + "\"", oldAuditContent, null);
 			}
 
 			protected void onConfigure() {

server-core/src/main/java/io/onedev/server/web/component/commandpalette/CommandPalettePanel.java

@@ -64,15 +64,16 @@ public abstract class CommandPalettePanel extends Panel {
 
 	private static final PatternSet eeUrlPatterns = PatternSet.parse("" +
 			"~dashboards/** ~code-search/** ~administration/settings/storage-setting " +
-			"~administration/cluster ~administration/settings/time-tracking ${project}/~timesheets " +
-			"${project}/~stats/pull-request-duration ${project}/~stats/build-duration ${project}/~stats/build-frequency");
+			"~administration/cluster ~administration/audits ~administration/settings/time-tracking ${project}/~timesheets " +
+			"${project}/~stats/pull-request/duration ${project}/~stats/pull-request/frequency ${project}/~stats/build/duration " + 
+			"${project}/~stats/build/frequency ${project}/~stats/issue/state-frequency ${project}/~stats/issue/state-duration " + 
+			"${project}/~stats/issue/state-trend ${project}/~audits");
 	
 	static {
 		for (IRequestMapper mapper: OneDev.getInstance(WebApplication.class).getRequestMappers())
 			availableUrls.addAll(getMountedPaths(mapper));
 		
-		Collections.sort(availableUrls, (Comparator<String[]>) (o1, o2) -> PathUtils.compare(Arrays.asList(o1), Arrays.asList(o2)));
-		
+		Collections.sort(availableUrls, (Comparator<String[]>) (o1, o2) -> PathUtils.compare(Arrays.asList(o1), Arrays.asList(o2)));		
 	}
 	
 	private static List<String[]> getMountedPaths(IRequestMapper mapper) {

server-core/src/main/java/io/onedev/server/web/component/datepicker/DateRangePicker.java

@@ -29,32 +29,39 @@ public class DateRangePicker extends TextField<DateRange> {
     public DateRangePicker(String id, IModel<DateRange> model) {
     	super(id, model);
 
+		setType(DateRange.class);
 		converter = new IConverter<DateRange>() {
 
 			@Override
 			public DateRange convertToObject(String value, Locale locale) throws ConversionException {
-				var errorMessage = _T("Invalid date range, expecting \"yyyy-MM-dd to yyyy-MM-dd\"");
-				if (value.contains(" ")) {
-					try {
-						var fromDate = LocalDate.from(DateUtils.DATE_FORMATTER.parse(StringUtils.substringBefore(value, " ")));
-						var toDate = LocalDate.from(DateUtils.DATE_FORMATTER.parse(StringUtils.substringAfterLast(value, " ")));
-						return new DateRange(fromDate, toDate);
-					} catch (Exception e) {
-						throw new ConversionException(errorMessage);
-					}
+				if (value == null) {
+					return null;
 				} else {
-					try {
-						var date = LocalDate.from(DateUtils.DATE_FORMATTER.parse(value));
-						return new DateRange(date, date);
-					} catch (Exception e) {
-						throw new ConversionException(errorMessage);
+					var errorMessage = _T("Invalid date range, expecting \"yyyy-MM-dd to yyyy-MM-dd\"");
+					if (value.contains(" ")) {
+						try {
+							var fromDate = LocalDate.from(DateUtils.DATE_FORMATTER.parse(StringUtils.substringBefore(value, " ")));
+							var toDate = LocalDate.from(DateUtils.DATE_FORMATTER.parse(StringUtils.substringAfterLast(value, " ")));
+							return new DateRange(fromDate, toDate);
+						} catch (Exception e) {
+							throw new ConversionException(errorMessage);
+						}
+					} else {
+						try {
+							var date = LocalDate.from(DateUtils.DATE_FORMATTER.parse(value));
+							return new DateRange(date, date);
+						} catch (Exception e) {
+							throw new ConversionException(errorMessage);
+						}
 					}
 				}
 			}
 
 			@Override
 			public String convertToString(DateRange value, Locale locale) {
-				if (!value.getFrom().equals(value.getTo()))
+				if (value == null)
+					return null;
+				else if (!value.getFrom().equals(value.getTo()))
 					return value.getFrom().format(DateUtils.DATE_FORMATTER) + " to " + value.getTo().format(DateUtils.DATE_FORMATTER);
 				else
 					return value.getFrom().format(DateUtils.DATE_FORMATTER);

server-core/src/main/java/io/onedev/server/web/component/issue/list/IssueListPanel.java

@@ -76,6 +76,8 @@ import com.google.common.collect.Sets;
 import edu.emory.mathcs.backport.java.util.Collections;
 import io.onedev.commons.utils.ExplicitException;
 import io.onedev.server.OneDev;
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.entitymanager.IssueLinkManager;
 import io.onedev.server.entitymanager.IssueManager;
 import io.onedev.server.entitymanager.IssueWatchManager;
@@ -93,6 +95,7 @@ import io.onedev.server.model.support.issue.field.spec.DateField;
 import io.onedev.server.model.support.issue.field.spec.FieldSpec;
 import io.onedev.server.model.support.issue.field.spec.IntegerField;
 import io.onedev.server.model.support.issue.field.spec.choicefield.ChoiceField;
+import io.onedev.server.persistence.TransactionManager;
 import io.onedev.server.search.entity.EntityQuery;
 import io.onedev.server.search.entity.EntitySort;
 import io.onedev.server.search.entity.EntitySort.Direction;
@@ -108,6 +111,7 @@ import io.onedev.server.util.LinkDescriptor;
 import io.onedev.server.util.ProjectScope;
 import io.onedev.server.util.facade.ProjectCache;
 import io.onedev.server.util.watch.WatchStatus;
+import io.onedev.server.util.xstream.ObjectMap;
 import io.onedev.server.web.WebConstants;
 import io.onedev.server.web.ajaxlistener.AttachAjaxIndicatorListener;
 import io.onedev.server.web.ajaxlistener.AttachAjaxIndicatorListener.AttachMode;
@@ -191,6 +195,14 @@ public abstract class IssueListPanel extends Panel {
 	private IssueLinkManager getIssueLinkManager() {
 		return OneDev.getInstance(IssueLinkManager.class);
 	}
+
+	private TransactionManager getTransactionManager() {
+		return OneDev.getInstance(TransactionManager.class);
+	}
+
+	private AuditManager getAuditManager() {
+		return OneDev.getInstance(AuditManager.class);
+	}
 	
 	@Override
 	protected void onDetach() {
@@ -528,6 +540,26 @@ public abstract class IssueListPanel extends Panel {
 		
 		add(new ModalLink("fieldsAndLinks") {
 
+			private String getAuditContent(Project project) {
+				var listFields = project.getIssueSetting().getListFields();
+				if (listFields == null)
+					listFields = getGlobalIssueSetting().getListFields();
+				var listLinks = project.getIssueSetting().getListLinks();
+				if (listLinks == null)
+					listLinks = getGlobalIssueSetting().getListLinks();
+				var auditData = new ObjectMap();
+				auditData.put("listFields", listFields);
+				auditData.put("listLinks", listLinks);
+				return VersionedXmlDoc.fromBean(auditData).toXML();
+			}
+
+			private String getAuditContent() {
+				var auditData = new ObjectMap();
+				auditData.put("listFields", getGlobalIssueSetting().getListFields());
+				auditData.put("listLinks", getGlobalIssueSetting().getListLinks());
+				return VersionedXmlDoc.fromBean(auditData).toXML();
+			}
+
 			@Override
 			protected Component newContent(String id, ModalPanel modal) {
 				Fragment fragment = new Fragment(id, "fieldsAndLinksFrag", IssueListPanel.this);
@@ -556,13 +588,19 @@ public abstract class IssueListPanel extends Panel {
 						super.onSubmit(target, form);
 						modal.close();
 						if (getProject() != null) {
+							var oldAuditContent = getAuditContent(getProject());
 							getProject().getIssueSetting().setListFields(bean.getFields());
 							getProject().getIssueSetting().setListLinks(bean.getLinks());
-							OneDev.getInstance(ProjectManager.class).update(getProject());
-						} else {
+							var newAuditContent = getAuditContent(getProject());
+							getProjectManager().update(getProject());
+							getAuditManager().audit(getProject(), "changed display fields/links of issue list", oldAuditContent, newAuditContent);
+						} else {		
+							var oldAuditContent = getAuditContent();					
 							getGlobalIssueSetting().setListFields(bean.getFields());
 							getGlobalIssueSetting().setListLinks(bean.getLinks());
+							var newAuditContent = getAuditContent();
 							OneDev.getInstance(SettingManager.class).saveIssueSetting(getGlobalIssueSetting());
+							getAuditManager().audit(null, "changed display fields/links of issue list", oldAuditContent, newAuditContent);
 						}
 						target.add(body);
 						onDisplayFieldsAndLinksUpdated(target);
@@ -575,9 +613,12 @@ public abstract class IssueListPanel extends Panel {
 					@Override
 					public void onClick(AjaxRequestTarget target) {
 						modal.close();
+						var oldAuditContent = getAuditContent();
 						getProject().getIssueSetting().setListFields(null);
 						getProject().getIssueSetting().setListLinks(null);
-						OneDev.getInstance(ProjectManager.class).update(getProject());
+						var newAuditContent = getAuditContent();
+						getProjectManager().update(getProject());
+						getAuditManager().audit(getProject(), "changed display fields/links of issue list", oldAuditContent, newAuditContent);
 						target.add(body);
 						onDisplayFieldsAndLinksUpdated(target);
 					}
@@ -971,7 +1012,7 @@ public abstract class IssueListPanel extends Panel {
 													Collection<Issue> issues = new ArrayList<>();
 													for (IModel<Issue> each : selectionColumn.getSelections())
 														issues.add(each.getObject());
-													OneDev.getInstance(IssueManager.class).move(issues, getProject(), getTargetProject());
+													getIssueManager().move(issues, getProject(), getTargetProject());
 													setResponsePage(ProjectIssueListPage.class,
 															ProjectIssueListPage.paramsOf(getTargetProject(), getQueryAfterCopyOrMove(), 0));
 													Session.get().success(_T("Issues moved"));
@@ -1053,7 +1094,7 @@ public abstract class IssueListPanel extends Panel {
 													Collection<Issue> issues = new ArrayList<>();
 													for (IModel<Issue> each : selectionColumn.getSelections())
 														issues.add(each.getObject());
-													OneDev.getInstance(IssueManager.class).copy(issues, getProject(), getTargetProject());
+													getIssueManager().copy(issues, getProject(), getTargetProject());
 													setResponsePage(ProjectIssueListPage.class,
 															ProjectIssueListPage.paramsOf(getTargetProject(), getQueryAfterCopyOrMove(), 0));
 													Session.get().success(_T("Issues copied"));
@@ -1114,10 +1155,16 @@ public abstract class IssueListPanel extends Panel {
 
 										@Override
 										protected void onConfirm(AjaxRequestTarget target) {
-											Collection<Issue> issues = new ArrayList<>();
-											for (IModel<Issue> each : selectionColumn.getSelections())
-												issues.add(each.getObject());
-											OneDev.getInstance(IssueManager.class).delete(issues, getProject());
+											getTransactionManager().run(()-> {
+												Collection<Issue> issues = new ArrayList<>();
+												for (IModel<Issue> each : selectionColumn.getSelections())
+													issues.add(each.getObject());
+												getIssueManager().delete(issues, getProject());
+												for (var issue: issues) {
+													var oldAuditContent = VersionedXmlDoc.fromBean(issue).toXML();
+													getAuditManager().audit(issue.getProject(), "deleted issue \"" + issue.getReference().toString(issue.getProject()) + "\"", oldAuditContent, null);
+												}													
+											});
 											selectionColumn.getSelections().clear();
 											target.add(countLabel);
 											target.add(body);
@@ -1474,10 +1521,16 @@ public abstract class IssueListPanel extends Panel {
 
 										@Override
 										protected void onConfirm(AjaxRequestTarget target) {
-											Collection<Issue> issues = new ArrayList<>();
-											for (Iterator<Issue> it = (Iterator<Issue>) dataProvider.iterator(0, issuesTable.getItemCount()); it.hasNext(); )
-												issues.add(it.next());
-											OneDev.getInstance(IssueManager.class).delete(issues, getProject());
+											getTransactionManager().run(()-> {
+												Collection<Issue> issues = new ArrayList<>();
+												for (Iterator<Issue> it = (Iterator<Issue>) dataProvider.iterator(0, issuesTable.getItemCount()); it.hasNext(); )
+													issues.add(it.next());
+												getIssueManager().delete(issues, getProject());
+												for (var issue: issues) {
+													var oldAuditContent = VersionedXmlDoc.fromBean(issue).toXML();
+													getAuditManager().audit(issue.getProject(), "deleted issue \"" + issue.getReference().toString(issue.getProject()) + "\"", oldAuditContent, null);
+												}													
+											});
 											dataProvider.detach();
 											selectionColumn.getSelections().clear();
 											target.add(countLabel);

server-core/src/main/java/io/onedev/server/web/component/iteration/actions/IterationActionsPanel.java

@@ -12,6 +12,8 @@ import org.apache.wicket.markup.html.panel.GenericPanel;
 import org.apache.wicket.model.IModel;
 
 import io.onedev.server.OneDev;
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.entitymanager.IterationManager;
 import io.onedev.server.model.Iteration;
 import io.onedev.server.web.ajaxlistener.ConfirmClickListener;
@@ -37,6 +39,7 @@ public abstract class IterationActionsPanel extends GenericPanel<Iteration> {
 			public void onClick(AjaxRequestTarget target) {
 				getIteration().setClosed(false);
 				getIterationManager().createOrUpdate(getIteration());
+				getAuditManager().audit(getIteration().getProject(), "reopened iteration \"" + getIteration().getName() + "\"", null, null);
 				target.add(IterationActionsPanel.this);
 				onUpdated(target);
 				getSession().success(MessageFormat.format(_T("Iteration \"{0}\" reopened"), getIteration().getName()));
@@ -62,6 +65,7 @@ public abstract class IterationActionsPanel extends GenericPanel<Iteration> {
 			public void onClick(AjaxRequestTarget target) {
 				getIteration().setClosed(true);
 				getIterationManager().createOrUpdate(getIteration());
+				getAuditManager().audit(getIteration().getProject(), "closed iteration \"" + getIteration().getName() + "\"", null, null);
 				target.add(IterationActionsPanel.this);
 				onUpdated(target);
 				getSession().success(MessageFormat.format(_T("Iteration \"{0}\" closed"), getIteration().getName()));
@@ -84,6 +88,8 @@ public abstract class IterationActionsPanel extends GenericPanel<Iteration> {
 			@Override
 			public void onClick(AjaxRequestTarget target) {
 				getIterationManager().delete(getIteration());
+				var oldAuditContent = VersionedXmlDoc.fromBean(getIteration()).toXML();
+				getAuditManager().audit(getIteration().getProject(), "deleted iteration \"" + getIteration().getName() + "\"", oldAuditContent, null);
 				target.add(IterationActionsPanel.this);
 				onDeleted(target);
 				getSession().success(MessageFormat.format(_T("Iteration \"{0}\" deleted"), getIteration().getName()));
@@ -98,6 +104,10 @@ public abstract class IterationActionsPanel extends GenericPanel<Iteration> {
 		return OneDev.getInstance(IterationManager.class);
 	}
 
+	private AuditManager getAuditManager() {
+		return OneDev.getInstance(AuditManager.class);
+	}
+
 	protected abstract void onDeleted(AjaxRequestTarget target);
 	
 	protected abstract void onUpdated(AjaxRequestTarget target);

server-core/src/main/java/io/onedev/server/web/component/pack/list/PackListPanel.java

@@ -47,10 +47,13 @@ import org.apache.wicket.request.cycle.RequestCycle;
 
 import io.onedev.commons.utils.ExplicitException;
 import io.onedev.server.OneDev;
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.entitymanager.PackManager;
 import io.onedev.server.model.Pack;
 import io.onedev.server.model.Project;
 import io.onedev.server.pack.PackSupport;
+import io.onedev.server.persistence.TransactionManager;
 import io.onedev.server.search.entity.EntityQuery;
 import io.onedev.server.search.entity.EntitySort;
 import io.onedev.server.search.entity.EntitySort.Direction;
@@ -126,6 +129,10 @@ public abstract class PackListPanel extends Panel {
 	private PackManager getPackManager() {
 		return OneDev.getInstance(PackManager.class);
 	}
+
+	private TransactionManager getTransactionManager() {
+		return OneDev.getInstance(TransactionManager.class);
+	}
 	
 	@Nullable
 	private PackQuery parse(@Nullable String queryString, PackQuery baseQuery) {
@@ -173,6 +180,10 @@ public abstract class PackListPanel extends Panel {
 	protected QuerySaveSupport getQuerySaveSupport() {
 		return null;
 	}
+
+	private AuditManager getAuditManager() {
+		return OneDev.getInstance(AuditManager.class);
+	}
 	
 	private void doQuery(AjaxRequestTarget target) {
 		packsTable.setCurrentPage(0);
@@ -267,10 +278,16 @@ public abstract class PackListPanel extends Panel {
 									
 									@Override
 									protected void onConfirm(AjaxRequestTarget target) {
-										Collection<Pack> packs = new ArrayList<>();
-										for (IModel<Pack> each: selectionColumn.getSelections())
-											packs.add(each.getObject());
-										OneDev.getInstance(PackManager.class).delete(packs);
+										getTransactionManager().run(()-> {
+											Collection<Pack> packs = new ArrayList<>();
+											for (IModel<Pack> each: selectionColumn.getSelections())
+												packs.add(each.getObject());
+											getPackManager().delete(packs);
+											for (var pack: packs) {
+												var oldAuditContent = VersionedXmlDoc.fromBean(pack).toXML();
+												getAuditManager().audit(pack.getProject(), "deleted package \"" + pack.getReference(false) + "\"", oldAuditContent, null);
+											}												
+										});
 										target.add(countLabel);
 										target.add(body);
 										selectionColumn.getSelections().clear();
@@ -331,11 +348,17 @@ public abstract class PackListPanel extends Panel {
 									
 									@Override
 									protected void onConfirm(AjaxRequestTarget target) {
-										Collection<Pack> packs = new ArrayList<>();
-										for (Iterator<Pack> it = (Iterator<Pack>) dataProvider.iterator(0, packsTable.getItemCount()); it.hasNext();) {
-											packs.add(it.next());
-										}
-										OneDev.getInstance(PackManager.class).delete(packs);
+										getTransactionManager().run(()-> {
+											Collection<Pack> packs = new ArrayList<>();
+											for (Iterator<Pack> it = (Iterator<Pack>) dataProvider.iterator(0, packsTable.getItemCount()); it.hasNext();) {
+												packs.add(it.next());
+											}
+											getPackManager().delete(packs);
+											for (var pack: packs) {
+												var oldAuditContent = VersionedXmlDoc.fromBean(pack).toXML();
+												getAuditManager().audit(pack.getProject(), "deleted package \"" + pack.getReference(false) + "\"", oldAuditContent, null);
+											}												
+										});
 										dataProvider.detach();
 										target.add(countLabel);
 										target.add(body);

server-core/src/main/java/io/onedev/server/web/component/project/forkoption/ForkOptionPanel.java

@@ -23,6 +23,8 @@ import org.apache.wicket.model.IModel;
 import com.google.common.collect.Sets;
 
 import io.onedev.server.OneDev;
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.entitymanager.BaseAuthorizationManager;
 import io.onedev.server.entitymanager.ProjectLabelManager;
 import io.onedev.server.entitymanager.ProjectManager;
@@ -122,9 +124,16 @@ public abstract class ForkOptionPanel extends Panel {
 						
 						OneDev.getInstance(TransactionManager.class).run(() -> {
 							getProjectManager().create(newProject);
-							getProjectManager().fork(getProject(), newProject);
+							getProjectManager().fork(getProject(), newProject);							
 							OneDev.getInstance(BaseAuthorizationManager.class).syncRoles(newProject, defaultRolesBean.getRoles());
 							OneDev.getInstance(ProjectLabelManager.class).sync(newProject, labelsBean.getLabels());
+
+							var auditData = editor.getPropertyValues();
+							auditData.put("parent", parentBean.getParentPath());
+							auditData.put("forkedFrom", getProject().getPath());
+							auditData.put("defaultRoles", defaultRolesBean.getRoleNames());
+							auditData.put("labels", labelsBean.getLabels());
+							OneDev.getInstance(AuditManager.class).audit(newProject, "created project", null, VersionedXmlDoc.fromBean(auditData).toXML());
 						});
 						Session.get().success(_T("Project forked"));
 						setResponsePage(ProjectBlobPage.class, ProjectBlobPage.paramsOf(newProject));

server-core/src/main/java/io/onedev/server/web/component/project/list/ProjectListPanel.java

@@ -8,10 +8,12 @@ import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.Comparator;
+import java.util.HashMap;
 import java.util.Iterator;
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 import java.util.Set;
 
 import javax.annotation.Nullable;
@@ -52,6 +54,8 @@ import org.apache.wicket.request.mapper.parameter.PageParameters;
 
 import io.onedev.commons.utils.ExplicitException;
 import io.onedev.server.OneDev;
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.entitymanager.BuildManager;
 import io.onedev.server.entitymanager.IssueManager;
 import io.onedev.server.entitymanager.PackManager;
@@ -207,6 +211,10 @@ public class ProjectListPanel extends Panel {
 	private ProjectManager getProjectManager() {
 		return OneDev.getInstance(ProjectManager.class);
 	}
+
+	private AuditManager getAuditManager() {
+		return OneDev.getInstance(AuditManager.class);
+	}
 	
 	@Override
 	protected void onDetach() {
@@ -239,6 +247,16 @@ public class ProjectListPanel extends Panel {
 			target.add(saveQueryLink);
 	}
 	
+	private void auditDeletions(Collection<Project> projects) {
+		for (var project: Project.getIndependents(projects)) {
+			var oldAuditContent = VersionedXmlDoc.fromBean(project).toXML();
+			if (project.getParent() != null)
+				getAuditManager().audit(project.getParent(), "deleted child project \"" + project.getName() + "\"", oldAuditContent, null);
+			else
+				getAuditManager().audit(null, "deleted root project \"" + project.getName() + "\"", oldAuditContent, null);
+		}
+}
+
 	@Override
 	protected void onInitialize() {
 		super.onInitialize();
@@ -426,7 +444,17 @@ public class ProjectListPanel extends Panel {
 													Collection<Project> projects = new ArrayList<>();
 													for (IModel<Project> each: selectionColumn.getSelections()) 
 														projects.add(each.getObject());
+													Map<Long, String> oldAuditContents = new HashMap<>();
+													for (var project: projects) {
+														oldAuditContents.put(project.getId(), project.getParent()!=null? project.getParent().getPath() : null);
+													}
 													getProjectManager().move(projects, getTargetProject());
+													for (var project: projects) {
+														var oldAuditContent = oldAuditContents.get(project.getId());
+														var newAuditContent = project.getParent()!=null? project.getParent().getPath() : null;
+														if (!Objects.equals(oldAuditContent, newAuditContent))
+															getAuditManager().audit(project, "changed parent", oldAuditContent, newAuditContent);
+													}
 													target.add(countLabel);
 													target.add(body);
 													selectionColumn.getSelections().clear();
@@ -512,7 +540,16 @@ public class ProjectListPanel extends Panel {
 												Collection<Project> projects = new ArrayList<>();
 												for (IModel<Project> each: selectionColumn.getSelections()) 
 													projects.add(each.getObject());
+												Map<Long, String> oldAuditContents = new HashMap<>();
+												for (var project: projects) {
+													oldAuditContents.put(project.getId(), project.getParent()!=null? project.getParent().getPath() : null);
+												}
 												getProjectManager().move(projects, null);
+												for (var project: projects) {
+													var oldAuditContent = oldAuditContents.get(project.getId());
+													if (oldAuditContent != null)
+														getAuditManager().audit(project, "changed parent", oldAuditContent, null);
+												}
 												target.add(countLabel);
 												target.add(body);
 												selectionColumn.getSelections().clear();
@@ -592,6 +629,7 @@ public class ProjectListPanel extends Panel {
 												observables.add(project.getDeleteChangeObservable());
 											}
 											getProjectManager().delete(projects);
+											auditDeletions(projects);
 											selectionColumn.getSelections().clear();
 											target.add(countLabel);
 											target.add(body);
@@ -696,7 +734,17 @@ public class ProjectListPanel extends Panel {
 													Collection<Project> projects = new ArrayList<>();
 													for (Iterator<Project> it = (Iterator<Project>) dataProvider.iterator(0, projectsTable.getItemCount()); it.hasNext();) 
 														projects.add(it.next());
+													Map<Long, String> oldAuditContents = new HashMap<>();
+													for (var project: projects) {
+														oldAuditContents.put(project.getId(), project.getParent()!=null? project.getParent().getPath() : null);
+													}	
 													getProjectManager().move(projects, getTargetProject());
+													for (var project: projects) {
+														var oldAuditContent = oldAuditContents.get(project.getId());
+														var newAuditContent = project.getParent()!=null? project.getParent().getPath() : null;
+														if (!Objects.equals(oldAuditContent, newAuditContent))
+															getAuditManager().audit(project, "changed parent", oldAuditContent, newAuditContent);
+													}
 													dataProvider.detach();
 													target.add(countLabel);
 													target.add(body);
@@ -783,7 +831,18 @@ public class ProjectListPanel extends Panel {
 												Collection<Project> projects = new ArrayList<>();
 												for (Iterator<Project> it = (Iterator<Project>) dataProvider.iterator(0, projectsTable.getItemCount()); it.hasNext();) 
 													projects.add(it.next());
+												
+												var oldAuditContents = new HashMap<Long, String>();
+												for (var project: projects) {
+													oldAuditContents.put(project.getId(), project.getParent()!=null? project.getParent().getPath() : null);
+												}
 												getProjectManager().move(projects, null);
+												for (var project: projects) {
+													var oldAuditContent = oldAuditContents.get(project.getId());
+													if (oldAuditContent != null)
+														getAuditManager().audit(project, "changed parent", oldAuditContent, null);
+												}
+
 												dataProvider.detach();
 												target.add(countLabel);
 												target.add(body);
@@ -867,6 +926,7 @@ public class ProjectListPanel extends Panel {
 												observables.add(project.getDeleteChangeObservable());
 											}
 											getProjectManager().delete(projects);
+											auditDeletions(projects);
 											dataProvider.detach();
 											selectionColumn.getSelections().clear();
 											target.add(countLabel);

server-core/src/main/java/io/onedev/server/web/component/pullrequest/list/PullRequestListPanel.java

@@ -57,6 +57,8 @@ import com.google.common.collect.Sets;
 
 import io.onedev.commons.utils.ExplicitException;
 import io.onedev.server.OneDev;
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.entitymanager.ProjectManager;
 import io.onedev.server.entitymanager.PullRequestManager;
 import io.onedev.server.entitymanager.PullRequestReviewManager;
@@ -68,6 +70,7 @@ import io.onedev.server.model.PullRequestLabel;
 import io.onedev.server.model.PullRequestReview;
 import io.onedev.server.model.PullRequestReview.Status;
 import io.onedev.server.model.support.LastActivity;
+import io.onedev.server.persistence.TransactionManager;
 import io.onedev.server.search.entity.EntityQuery;
 import io.onedev.server.search.entity.EntitySort;
 import io.onedev.server.search.entity.EntitySort.Direction;
@@ -148,6 +151,10 @@ public abstract class PullRequestListPanel extends Panel {
 	private PullRequestManager getPullRequestManager() {
 		return OneDev.getInstance(PullRequestManager.class);		
 	}
+
+	private TransactionManager getTransactionManager() {
+		return OneDev.getInstance(TransactionManager.class);
+	}
 	
 	@Nullable
 	protected PagingHistorySupport getPagingHistorySupport() {
@@ -415,10 +422,16 @@ public abstract class PullRequestListPanel extends Panel {
 
 										@Override
 										protected void onConfirm(AjaxRequestTarget target) {
-											Collection<PullRequest> requests = new ArrayList<>();
-											for (IModel<PullRequest> each : selectionColumn.getSelections())
-												requests.add(each.getObject());
-											OneDev.getInstance(PullRequestManager.class).delete(requests, getProject());
+											getTransactionManager().run(()-> {
+												Collection<PullRequest> requests = new ArrayList<>();
+												for (IModel<PullRequest> each : selectionColumn.getSelections())
+													requests.add(each.getObject());
+												getPullRequestManager().delete(requests, getProject());
+												for (var request: requests) {
+													var oldAuditContent = VersionedXmlDoc.fromBean(request).toXML();
+													getAuditManager().audit(request.getProject(), "deleted pull request \"" + request.getReference().toString(request.getProject()) + "\"", oldAuditContent, null);
+												}													
+											});
 											target.add(countLabel);
 											target.add(body);
 											selectionColumn.getSelections().clear();
@@ -614,10 +627,16 @@ public abstract class PullRequestListPanel extends Panel {
 
 										@Override
 										protected void onConfirm(AjaxRequestTarget target) {
-											Collection<PullRequest> requests = new ArrayList<>();
-											for (Iterator<PullRequest> it = (Iterator<PullRequest>) dataProvider.iterator(0, requestsTable.getItemCount()); it.hasNext(); )
-												requests.add(it.next());
-											OneDev.getInstance(PullRequestManager.class).delete(requests, getProject());
+											getTransactionManager().run(()-> {
+												Collection<PullRequest> requests = new ArrayList<>();
+												for (Iterator<PullRequest> it = (Iterator<PullRequest>) dataProvider.iterator(0, requestsTable.getItemCount()); it.hasNext(); )
+													requests.add(it.next());
+												getPullRequestManager().delete(requests, getProject());
+												for (var request: requests) {
+													var oldAuditContent = VersionedXmlDoc.fromBean(request).toXML();
+													getAuditManager().audit(request.getProject(), "deleted pull request \"" + request.getReference().toString(request.getProject()) + "\"", oldAuditContent, null);
+												}													
+											});
 											dataProvider.detach();
 											target.add(countLabel);
 											target.add(body);
@@ -1106,6 +1125,10 @@ public abstract class PullRequestListPanel extends Panel {
 		return OneDev.getInstance(PullRequestWatchManager.class);
 	}
 
+	private AuditManager getAuditManager() {
+		return OneDev.getInstance(AuditManager.class);
+	}
+
 	@Override
 	public void renderHead(IHeaderResponse response) {
 		super.renderHead(response);

server-core/src/main/java/io/onedev/server/web/component/select2/res/select2-bootstrap.css

@@ -96,15 +96,19 @@
 }
 
 .select2-container-multi .select2-choices .select2-search-field input {
-	height: calc(1.5em + 1.3rem);
+	  height: calc(1.5em + 1.3rem);
     line-height: 1.42857;
 }
 
 .select2-container-multi.form-control-sm .select2-choices .select2-search-field input,
 .input-group-sm .select2-container-multi .select2-choices .select2-search-field input {
-	height: calc(1.35em + 1.1rem + 2px);
+	  height: calc(1.3em + 1.1rem + 1px);
     line-height: 1.35;
-	border-radius: 0.42rem;
+	  border-radius: 0.28rem;
+}
+
+.form-control-sm.select2-container .select2-choice, .form-control-sm.select2-container .select2-choices {
+	  border-radius: 0.28rem;
 }
 
 /**

server-core/src/main/java/io/onedev/server/web/component/user/UserDeleteLink.java

@@ -1,19 +1,21 @@
 package io.onedev.server.web.component.user;
 
-import io.onedev.server.OneDev;
-import io.onedev.server.entitymanager.UserManager;
-import io.onedev.server.model.User;
-import io.onedev.server.security.SecurityUtils;
-import io.onedev.server.web.WebSession;
-import io.onedev.server.web.page.admin.usermanagement.UserListPage;
-import io.onedev.server.web.util.ConfirmClickModifier;
-
 import static io.onedev.server.web.translation.Translation._T;
 
 import org.apache.wicket.RestartResponseException;
 import org.apache.wicket.markup.html.link.Link;
 import org.apache.wicket.request.flow.RedirectToUrlException;
 
+import io.onedev.server.OneDev;
+import io.onedev.server.data.migration.VersionedXmlDoc;
+import io.onedev.server.entitymanager.AuditManager;
+import io.onedev.server.entitymanager.UserManager;
+import io.onedev.server.model.User;
+import io.onedev.server.security.SecurityUtils;
+import io.onedev.server.web.WebSession;
+import io.onedev.server.web.page.admin.usermanagement.UserListPage;
+import io.onedev.server.web.util.ConfirmClickModifier;
+
 public abstract class UserDeleteLink extends Link<Void> {
 
 	public UserDeleteLink(String id) {
@@ -30,13 +32,17 @@ public abstract class UserDeleteLink extends Link<Void> {
 	@Override
 	public void onClick() {
 		var userManager = OneDev.getInstance(UserManager.class);
+		var auditManager = OneDev.getInstance(AuditManager.class);
+		var oldAuditContent = VersionedXmlDoc.fromBean(getUser()).toXML();
 		if (getUser().equals(SecurityUtils.getAuthUser())) {
 			userManager.delete(getUser());
+			auditManager.audit(null, "deleted account \"" + getUser().getName() + "\"", oldAuditContent, null);
 			WebSession.get().success("Account removed");
 			WebSession.get().logout();
 			throw new RestartResponseException(getApplication().getHomePage());
 		} else {
 			userManager.delete(getUser());
+			auditManager.audit(null, "deleted account \"" + getUser().getName() + "\"", oldAuditContent, null);
 			WebSession.get().success("Account removed");
 				String redirectUrlAfterDelete = WebSession.get().getRedirectUrlAfterDelete(User.class);
 			if (redirectUrlAfterDelete != null)

server-core/src/main/java/io/onedev/server/web/component/user/accesstoken/AccessTokenEditPanel.java

@@ -15,8 +15,10 @@ import org.apache.wicket.markup.html.panel.Panel;
 import com.google.common.collect.Sets;
 
 import io.onedev.server.OneDev;
+import io.onedev.server.data.migration.VersionedXmlDoc;
 import io.onedev.server.entitymanager.AccessTokenAuthorizationManager;
 import io.onedev.server.entitymanager.AccessTokenManager;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.entitymanager.ProjectManager;
 import io.onedev.server.entitymanager.RoleManager;
 import io.onedev.server.model.AccessToken;
@@ -25,9 +27,12 @@ import io.onedev.server.persistence.TransactionManager;
 import io.onedev.server.util.Path;
 import io.onedev.server.util.PathNode;
 import io.onedev.server.web.editable.BeanContext;
+import io.onedev.server.web.page.user.UserPage;
 
 abstract class AccessTokenEditPanel extends Panel {
 	
+	private String oldAuditContent;
+	
 	public AccessTokenEditPanel(String id) {
 		super(id);
 	}
@@ -40,6 +45,9 @@ abstract class AccessTokenEditPanel extends Panel {
 
 		var token = getToken();
 		var bean = AccessTokenEditBean.of(token);
+
+		if (!token.isNew())
+			oldAuditContent = VersionedXmlDoc.fromBean(bean).toXML();
 		
 		var editor = BeanContext.edit("editor", bean, Sets.newHashSet("value"), true);
 		form.add(editor);
@@ -89,8 +97,15 @@ abstract class AccessTokenEditPanel extends Panel {
 					token.setExpireDate(bean.getExpireDate());
 
 					getTransactionManager().run(() -> {
+						if (token.isNew())						
 						getTokenManager().createOrUpdate(token);
 						getAuthorizationManager().syncAuthorizations(token, authorizations);
+						if (getPage() instanceof UserPage) {
+							var newAuditContent = VersionedXmlDoc.fromBean(bean).toXML();
+							var verb = oldAuditContent != null ? "changed" : "created";
+							getAuditManager().audit(null, verb + " access token \"" + token.getName() + "\" for account \"" + token.getOwner().getName() + "\"", oldAuditContent, newAuditContent);
+							oldAuditContent = newAuditContent;
+						}
 					});
 					onSaved(target);
 				}
@@ -115,6 +130,10 @@ abstract class AccessTokenEditPanel extends Panel {
 		
 		setOutputMarkupId(true);
 	}
+
+	private AuditManager getAuditManager() {
+		return OneDev.getInstance(AuditManager.class);
+	}
 	
 	private TransactionManager getTransactionManager() {
 		return OneDev.getInstance(TransactionManager.class);

server-core/src/main/java/io/onedev/server/web/component/user/accesstoken/AccessTokenListPanel.java

@@ -15,9 +15,12 @@ import org.apache.wicket.markup.html.panel.Panel;
 import org.apache.wicket.model.AbstractReadOnlyModel;
 
 import io.onedev.server.OneDev;
+import io.onedev.server.data.migration.VersionedXmlDoc;
 import io.onedev.server.entitymanager.AccessTokenManager;
+import io.onedev.server.entitymanager.AuditManager;
 import io.onedev.server.model.AccessToken;
 import io.onedev.server.model.User;
+import io.onedev.server.web.page.user.UserPage;
 
 public abstract class AccessTokenListPanel extends Panel {
 
@@ -50,7 +53,12 @@ public abstract class AccessTokenListPanel extends Panel {
 
 					@Override
 					protected void onDelete(AjaxRequestTarget target) {
-						getTokenManager().delete(getToken());
+						var token = getToken();
+						getTokenManager().delete(token);
+						if (getPage() instanceof UserPage) {
+							var oldAuditContent = VersionedXmlDoc.fromBean(token).toXML();
+							getAuditManager().audit(null, "deleted access token \"" + token.getName() + "\" for account \"" + token.getOwner().getName() + "\"", oldAuditContent, null);
+						}
 						target.add(container);
 					}
 
@@ -146,4 +154,8 @@ public abstract class AccessTokenListPanel extends Panel {
 		return OneDev.getInstance(AccessTokenManager.class);
 	}
 	
+	private AuditManager getAuditManager() {
+		return OneDev.getInstance(AuditManager.class);
+	}
+	
 }