Upgrade Sendgrid version in Compute sample (#211)

* Update Sendgrid library to latest version

Author: Ace Nassri

computeengine/package.json

@@ -13,7 +13,7 @@
     "googleapis": "^12.2.0",
     "nodemailer": "^2.4.1",
     "nodemailer-smtp-transport": "^2.5.0",
-    "sendgrid": "^2.0.0"
+    "sendgrid": "^4.0.1"
   },
   "devDependencies": {
     "mocha": "^3.0.2"

computeengine/sendgrid.js

@@ -14,19 +14,33 @@
 'use strict';
 
 // [START send]
+// This sample is based off of https://www.npmjs.com/package/sendgrid#without-mail-helper-class
 var Sendgrid = require('sendgrid')(
   process.env.SENDGRID_API_KEY || '<your-sendgrid-api-key>'
 );
 
-Sendgrid.send({
-  from: 'ANOTHER_EMAIL@ANOTHER_EXAMPLE.COM', // From address
-  to: 'EMAIL@EXAMPLE.COM', // To address
-  subject: 'test email from Node.js on Google Cloud Platform', // Subject
-  text: 'Hello!\n\nThis a test email from Node.js.' // Content
-}, function (err, json) {
-  if (err) {
-    return console.log(err);
+var request = Sendgrid.emptyRequest({
+  method: 'POST',
+  path: '/v3/mail/send',
+  body: {
+    personalizations: [{
+      to: [{ email: 'to_email@example.com' }],
+      subject: 'Sendgrid test email from Node.js on Google Cloud Platform'
+    }],
+    from: { email: 'from_email@example.com' },
+    content: [{
+      type: 'text/plain',
+      value: 'Hello!\n\nThis a Sendgrid test email from Node.js on Google Cloud Platform.'
+    }]
   }
-  console.log(json);
+});
+
+Sendgrid.API(request, function (error, response) {
+  if (error) {
+    console.log('Mail not sent; see error message below.');
+  } else {
+    console.log('Mail sent successfully!');
+  }
+  console.log(response);
 });
 // [END send]

computeengine/test/sendgrid.test.js

@@ -22,14 +22,25 @@ describe('computeengine:sendgrid', function () {
       sendgrid: function (key) {
         assert.equal(key, 'foo');
         return {
-          send: function (payload, cb) {
-            assert.deepEqual(payload, {
-              from: 'ANOTHER_EMAIL@ANOTHER_EXAMPLE.COM',
-              to: 'EMAIL@EXAMPLE.COM',
-              subject: 'test email from Node.js on Google Cloud Platform',
-              text: 'Hello!\n\nThis a test email from Node.js.'
+          emptyRequest: function (x) {
+            return x;
+          },
+          API: function (request, cb) {
+            assert.deepEqual(request, {
+              method: 'POST',
+              path: '/v3/mail/send',
+              body: {
+                personalizations: [{
+                  to: [{ email: 'to_email@example.com' }],
+                  subject: 'Sendgrid test email from Node.js on Google Cloud Platform'
+                }],
+                from: { email: 'from_email@example.com' },
+                content: [{
+                  type: 'text/plain',
+                  value: 'Hello!\n\nThis a Sendgrid test email from Node.js on Google Cloud Platform.'
+                }]
+              }
             });
-            cb('done');
             done();
           }
         };