add support for stackdriver

app.js

@@ -1,4 +1,17 @@
 'use strict';
+if (process.env.EDGEMICRO_STACKDRIVER) {
+  if (!process.env.GCP_PROJECT_ID || !process.env.GCP_KEY_FILE) {
+    console.log("env GCP_PROJECT_ID or GCP_KEY_FILE is missing, skipping trace");
+  } else {
+    require('@google-cloud/trace-agent').start({
+      projectId: process.env.GCP_PROJECT_ID,
+      keyFilename: process.env.GCP_KEY_FILE,
+      logLevel: 4,
+      enabled: true,
+      flushDelaySeconds: 5
+    });
+  }
+}
 
 var request = require('request');
 var url = require('url');
@@ -16,6 +29,12 @@ options.org = process.env.EDGEMICRO_ORG;
 options.configDir = process.env.EDGEMICRO_CONFIG_DIR || os.homedir()+"/.edgemicro";
 options.configUrl = process.env.EDGEMICRO_CONFIG_URL;
 options.processes = process.env.EDGEMICRO_PROCESSES || os.cpus().length;
+options.pluginDir = process.env.EDGEMICRO_PLUGIN_DIR;
+options.apiProxyName = process.env.EDGEMICRO_API_PROXYNAME;
+options.revision = process.env.EDGEMICRO_API_REVISION;
+options.basepath = process.env.EDGEMICRO_API_BASEPATH;
+options.target = process.env.EDGEMICRO_API_TARGET;
+
 options.port = process.env.PORT || 8000;
 
 if (!options.key ) { console.log('key is required'); process.exit(1);}

app.yaml

@@ -13,7 +13,7 @@
 #
 # [START runtime]
 service: microgateway
-runtime: nodejs
+runtime: nodejs8
 env: flex
 automatic_scaling:
   min_num_instances: 1