feat: add line number, column position and filename support

lib/LoggingEvent.js

@@ -14,13 +14,21 @@ class LoggingEvent {
    * @param {Array} data objects to log
    * @author Seth Chisamore
    */
-  constructor(categoryName, level, data, context) {
+  constructor(categoryName, level, data, context, location) {
     this.startTime = new Date();
     this.categoryName = categoryName;
     this.data = data;
     this.level = level;
     this.context = Object.assign({}, context);
     this.pid = process.pid;
+
+    if (location) {
+      this.functionName = location.functionName;
+      this.fileName = location.fileName;
+      this.lineNumber = location.lineNumber;
+      this.columnNumber = location.columnNumber;
+      this.stack = location.stack;
+    }
   }
 
   serialise() {

lib/layouts.js

@@ -98,6 +98,10 @@ function dummyLayout(loggingEvent) {
  *  - %% %
  *  - %n newline
  *  - %z pid
+ *  - %f filename
+ *  - %l line number
+ *  - %o column postion
+ *  - %s callcstack
  *  - %x{<tokenname>} add dynamic tokens to your log. Tokens are specified in the tokens parameter
  *  - %X{<tokenname>} add dynamic tokens to your log. Tokens are specified in logger context
  * You can use %[ and %] to define a colored block.
@@ -119,7 +123,7 @@ function dummyLayout(loggingEvent) {
  */
 function patternLayout(pattern, tokens) {
   const TTCC_CONVERSION_PATTERN = '%r %p %c - %m%n';
-  const regex = /%(-?[0-9]+)?(\.?[0-9]+)?([[\]cdhmnprzxXy%])(\{([^}]+)\})?|([^%]+)/;
+  const regex = /%(-?[0-9]+)?(\.?[0-9]+)?([[\]cdhmnprzxXyflos%])(\{([^}]+)\})?|([^%]+)/;
 
   pattern = pattern || TTCC_CONVERSION_PATTERN;
 
@@ -215,6 +219,22 @@ function patternLayout(pattern, tokens) {
     return null;
   }
 
+  function fileName(loggingEvent) {
+    return loggingEvent.fileName || '';
+  }
+
+  function lineNumber(loggingEvent) {
+    return loggingEvent.lineNumber || '';
+  }
+
+  function columnNumber(loggingEvent) {
+    return loggingEvent.columnNumber || '';
+  }
+
+  function callStack(loggingEvent) {
+    return loggingEvent.stack || '';
+  }
+
   /* eslint quote-props:0 */
   const replacers = {
     'c': categoryName,
@@ -230,7 +250,11 @@ function patternLayout(pattern, tokens) {
     'z': pid,
     '%': percent,
     'x': userDefined,
-    'X': contextDefined
+    'X': contextDefined,
+    'f': fileName,
+    'l': lineNumber,
+    'o': columnNumber,
+    's': callStack,
   };
 
   function replaceToken(conversionCharacter, loggingEvent, specifier) {

lib/logger.js

@@ -9,6 +9,22 @@ const clustering = require('./clustering');
 const categories = require('./categories');
 const configuration = require('./configuration');
 
+const stackReg = /at (?:(.+)\s+\()?(?:(.+?):(\d+)(?::(\d+))?|([^)]+))\)?/;
+function parseStack(data, skipIdx = 4) {
+  const stacklines = data.stack.split('\n').slice(skipIdx);
+  const lineMatch = stackReg.exec(stacklines[0]);
+  if (lineMatch && lineMatch.length === 6) {
+    return {
+      functionName: lineMatch[1],
+      fileName: lineMatch[2],
+      lineNumber: parseInt(lineMatch[3], 10),
+      columnNumber: parseInt(lineMatch[4], 10),
+      stack: stacklines.join('\n'),
+    };
+  }
+  return null;
+}
+
 /**
  * Logger to log messages.
  * use {@see log4js#getLogger(String)} to get an instance.
@@ -29,6 +45,8 @@ class Logger {
     this.category = name;
     this.context = {};
     debug(`Logger created (${this.category}, ${this.level})`);
+
+    this._useStack = false;
   }
 
   get level() {
@@ -52,7 +70,13 @@ class Logger {
 
   _log(level, data) {
     debug(`sending log data (${level}) to appenders`);
-    const loggingEvent = new LoggingEvent(this.category, level, data, this.context);
+    let loggingEvent = null;
+    if (this._useStack) {
+      const location = parseStack(new Error());
+      loggingEvent = new LoggingEvent(this.category, level, data, this.context, location);
+    } else {
+      loggingEvent = new LoggingEvent(this.category, level, data, this.context);
+    }
     clustering.send(loggingEvent);
   }
 
@@ -67,6 +91,11 @@ class Logger {
   clearContext() {
     this.context = {};
   }
+
+  enabelCallStack(bool = true) {
+    this._useStack = (bool === true);
+    return this;
+  }
 }
 
 function addLevelMethods(target) {