Added node.js tracing

src/currencyservice/package.json

@@ -5,6 +5,7 @@
   "repository": "TODO",
   "license": "Apache-2.0",
   "dependencies": {
+    "@google-cloud/trace-agent": "^2.11.0",
     "async": "^1.5.2",
     "google-protobuf": "^3.0.0",
     "grpc": "^1.0.0",

src/currencyservice/server.js

@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+require('@google-cloud/trace-agent').start();
+
 const path = require('path');
 const grpc = require('grpc');
 const request = require('request');

src/paymentservice/package.json

@@ -9,6 +9,7 @@
   "author": "Jonathan Lui",
   "license": "ISC",
   "dependencies": {
+    "@google-cloud/trace-agent": "^2.11.0",
     "@grpc/proto-loader": "^0.1.0",
     "grpc": "^1.12.3",
     "simple-card-validator": "^1.1.0",

src/paymentservice/server.js

@@ -1,3 +1,4 @@
+require('@google-cloud/trace-agent').start();
 const grpc = require('grpc');
 const protoLoader = require('@grpc/proto-loader');