feat(cloudFoundry): serviceName can be read from VCAP_APPLICATION

Author: gergelyke

lib/utils/configReader.js

@@ -29,6 +29,20 @@ ConfigReader.prototype._getSystemConfig = function () {
   }
 }
 
+ConfigReader.prototype._getCloudFoundryConfig = function () {
+  var VCAP_APPLICATION = process.env.VCAP_APPLICATION
+
+  try {
+    VCAP_APPLICATION = JSON.parse(VCAP_APPLICATION)
+  } catch (ex) {
+    return {}
+  }
+
+  return {
+    serviceName: VCAP_APPLICATION.name
+  }
+}
+
 ConfigReader.prototype._getEnvVarConfig = function () {
   var envVarConfig = {
     collectInterval: process.env.TRACE_COLLECT_INTERVAL,
@@ -82,6 +96,7 @@ ConfigReader.prototype.getConfig = function () {
   var systemConfig = this._getSystemConfig()
   var envVarConfig = this._getEnvVarConfig()
   var defaultConfig = this._getDefaultConfig()
+  var cloudFoundryConfig = this._getCloudFoundryConfig()
 
   var config = defaults({}, parameterConfig, systemConfig, envVarConfig)
 
@@ -92,6 +107,7 @@ ConfigReader.prototype.getConfig = function () {
   config = defaults(
     config,
     fileConfig,
+    cloudFoundryConfig,
     defaultConfig
   )
 

lib/utils/configReader.spec.js

@@ -159,6 +159,23 @@ describe('Config Reader module', function () {
     expect(config.test).to.eql('param')
   })
 
+  it('works with Cloud Foundry', function () {
+    process.env.VCAP_APPLICATION = JSON.stringify({
+      name: 'test-app'
+    })
+
+    var configReader = ConfigReader.create({
+      reporter: 'dummy',
+      collectorApiUrl: 'http://c.a.b',
+      apiKey: 'api-key'
+    })
+
+    var cfg = configReader.getConfig()
+
+    expect(cfg.serviceName).to.eql('test-app')
+    delete process.env.VCAP_APPLICATION
+  })
+
   it('can find config file by default config', function () {
     var configReader = ConfigReader.create({
       serviceName: 'test',