Merge pull request #153 from Axway-API-Management-Plus/apibuilder-apm

Adds APM Support for API-Builder

Author: Chris Wiechmann

CHANGELOG.md

@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ## [Unreleased]
 ### Added
 - API-Management KPIs incl. dashboard [#64](https://github.com/Axway-API-Management-Plus/apigateway-openlogging-elk/issues/64)
+- Added support to enable an APM-Service or use an external APM-Server with API-Builder [#149](https://github.com/Axway-API-Management-Plus/apigateway-openlogging-elk/issues/149)
 
 ### Changed
 - Helm Default-Values for Kibana Memory-Limits changed from 300MB to 500MB (Request) and 300MB to 750MB (Limit)
@@ -16,7 +17,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - Updated Elastic-Stack from version 7.14.0 to 7.15.2
 
 ### Fixed
-- Error initializing cluster when having multiple ELASTICSEARCH_HOSTS configured [#150](https://github.com/Axway-API-Management-Plus/apigateway-openlogging-elk/issues/150)
+- Error initializing cluster when already multiple ELASTICSEARCH_HOSTS configured [#150](https://github.com/Axway-API-Management-Plus/apigateway-openlogging-elk/issues/150)
 - Filebeat ignored most recent OpenTraffic file due to a wrong filename pattern (*_traffic_*.log --> *_traffic*.log)
 - Default for optional parameter: `FILEBEAT_COMPRESSION_LEVEL` was not working as expected
 

DEVELOPMENT.MD

@@ -80,6 +80,14 @@ instances:
       - "*.ec2.internal"
       - "*.compute-1.amazonaws.com"
       - "*.cloudapp.azure.com"
+  - name: "apm-server"
+    dns:
+      - "apm-server"
+      - "localhost"
+      - "api-env"
+      - "*.ec2.internal"
+      - "*.compute-1.amazonaws.com"
+      - "*.cloudapp.azure.com"
 ```
 
 Run elasticsearch-certutil:  

apibuilder4elastic/app.js

@@ -1,4 +1,15 @@
 const APIBuilder = require('@axway/api-builder-runtime');
+
+if(process.env.APM_ENABLED) {
+	console.log(`Application performance monitoring enabled. Using APM-Server: ${process.env.APM_SERVER || 'https://apm-server:8200'}`);
+	require('elastic-apm-node').start({
+		serviceName: 'APIBuilder4Elastic',
+		serverUrl: process.env.APM_SERVER || 'https://apm-server:8200', 
+		verifyServerCert: ("false" == process.env.APM_VALIDATE_SERVER_CERT) ? false : true, 
+		serverCaCertFile: process.env.APM_SERVER_CA || 'config/certificates/ca.crt'
+	});
+}
+
 const server = new APIBuilder();
 
 // lifecycle examples