Add option to change log level for websocket logs

docs/providers/aws/events/websocket.md

@@ -212,3 +212,16 @@ provider:
 ```
 
 The log streams will be generated in a dedicated log group which follows the naming schema `/aws/websocket/{service}-{stage}`.
+
+The default log level will be INFO. You can change this to error with the following:
+
+```yml
+# serverless.yml
+provider:
+  name: aws
+  logs:
+    websocket:
+      level: ERROR
+```
+
+Valid values are INFO, ERROR.

lib/plugins/aws/package/compile/events/websockets/lib/stage.js

@@ -2,6 +2,10 @@
 
 const BbPromise = require('bluebird');
 const ensureApiGatewayCloudWatchRole = require('../../lib/ensureApiGatewayCloudWatchRole');
+const ServerlessError = require('../../../../../../../classes/Error').ServerlessError;
+
+const defaultLogLevel = 'INFO';
+const validLogLevels = new Set(['INFO', 'ERROR']);
 
 module.exports = {
   compileStage() {
@@ -15,7 +19,7 @@ module.exports = {
       if (provider.apiGateway && provider.apiGateway.websocketApiId) return null;
 
       // logs
-      const logsEnabled = provider.logs && provider.logs.websocket;
+      const logs = provider.logs && provider.logs.websocket;
 
       const stageLogicalId = this.provider.naming.getWebsocketsStageLogicalId();
       const logGroupLogicalId = this.provider.naming.getWebsocketsLogGroupLogicalId();
@@ -35,7 +39,19 @@ module.exports = {
 
       Object.assign(cfTemplate.Resources, { [stageLogicalId]: stageResource });
 
-      if (!logsEnabled) return null;
+      if (!logs) return null;
+
+      let level = defaultLogLevel;
+      if (logs.level) {
+        level = logs.level;
+        if (!validLogLevels.has(level)) {
+          throw new ServerlessError(
+            `provider.logs.websocket.level is set to an invalid value. Support values are ${Array.from(
+              validLogLevels
+            ).join(', ')}, got ${level}.`
+          );
+        }
+      }
 
       // create log-specific resources
       Object.assign(stageResource.Properties, {
@@ -54,7 +70,7 @@ module.exports = {
         },
         DefaultRouteSettings: {
           DataTraceEnabled: true,
-          LoggingLevel: 'INFO',
+          LoggingLevel: level,
         },
       });
 

lib/plugins/aws/package/compile/events/websockets/lib/stage.test.js

@@ -1,6 +1,8 @@
 'use strict';
 
-const expect = require('chai').expect;
+const chai = require('chai');
+
+const expect = chai.expect;
 const sinon = require('sinon');
 const BbPromise = require('bluebird');
 const _ = require('lodash');
@@ -9,6 +11,8 @@ const AwsCompileWebsocketsEvents = require('../index');
 const Serverless = require('../../../../../../../Serverless');
 const AwsProvider = require('../../../../../provider/awsProvider');
 
+chai.use(require('chai-as-promised'));
+
 describe('#compileStage()', () => {
   let awsCompileWebsocketsEvents;
   let stageLogicalId;
@@ -151,6 +155,34 @@ describe('#compileStage()', () => {
       });
     });
 
+    it('should use valid logging level', () => {
+      awsCompileWebsocketsEvents.serverless.service.provider.logs = {
+        websocket: {
+          level: 'ERROR',
+        },
+      };
+
+      return awsCompileWebsocketsEvents.compileStage().then(() => {
+        const resources =
+          awsCompileWebsocketsEvents.serverless.service.provider.compiledCloudFormationTemplate
+            .Resources;
+
+        expect(resources[stageLogicalId].Properties.DefaultRouteSettings.LoggingLevel).equal(
+          'ERROR'
+        );
+      });
+    });
+
+    it('should reject invalid logging level', () => {
+      awsCompileWebsocketsEvents.serverless.service.provider.logs = {
+        websocket: {
+          level: 'FOOBAR',
+        },
+      };
+
+      expect(awsCompileWebsocketsEvents.compileStage()).to.be.rejectedWith('invalid value');
+    });
+
     it('should ensure ClousWatch role custom resource', () => {
       return awsCompileWebsocketsEvents.compileStage().then(() => {
         const resources =