Add analytics sample

Author: Ace Nassri

functions/firebase/index.js

@@ -84,3 +84,26 @@ exports.helloAuth = (event, callback) => {
   callback();
 };
 // [END functions_firebase_auth]
+
+// [START functions_firebase_analytics]
+/**
+ * Triggered by a Google Analytics for Firebase log event.
+ *
+ * @param {!Object} event The Cloud Functions event.
+ * @param {!Function} The callback function.
+ */
+exports.helloAnalytics = (event, callback) => {
+  const resource = event.resource;
+  console.log(`Function triggered by the following event: ${resource}`);
+
+  const analyticsEvent = event.data.eventDim[0];
+  console.log(`Name: ${analyticsEvent.name}`);
+  console.log(`Timestamp: ${new Date(analyticsEvent.timestampMicros / 1000)}`);
+
+  const userObj = event.data.userDim;
+  console.log(`Device Model: ${userObj.deviceInfo.deviceModel}`);
+  console.log(`Location: ${userObj.geoInfo.city}, ${userObj.geoInfo.country}`);
+
+  callback();
+};
+// [END functions_firebase_analytics]

functions/node8/index.js

@@ -186,3 +186,24 @@ exports.helloAuth = (data, context) => {
   }
 };
 // [END functions_firebase_auth_node8]
+
+// [START functions_firebase_analytics_node8]
+/**
+ * Triggered by a Google Analytics for Firebase log event.
+ *
+ * @param {object} data The event payload.
+ * @param {object} context The event metadata.
+ */
+exports.helloAnalytics = (data, context) => {
+  const resource = context.resource;
+  console.log(`Function triggered by event: ${resource}`);
+
+  const analyticsEvent = data.eventDim[0];
+  console.log(`Name: ${analyticsEvent.name}`);
+  console.log(`Timestamp: ${new Date(analyticsEvent.timestampMicros / 1000)}`);
+
+  const userObj = data.userDim;
+  console.log(`Device Model: ${userObj.deviceInfo.deviceModel}`);
+  console.log(`Location: ${userObj.geoInfo.city}, ${userObj.geoInfo.country}`);
+};
+// [END functions_firebase_analytics_node8]

functions/node8/test/index.test.js

@@ -82,3 +82,34 @@ test.serial('should monitor Auth', t => {
   t.true(console.log.secondCall.args[0].includes(dateString));
   t.true(console.log.thirdCall.args[0].includes(emailString));
 });
+
+test.serial('should monitor Analytics', t => {
+  const date = new Date();
+
+  const context = {
+    resource: 'my-resource'
+  };
+  const data = {
+    eventDim: [{
+      name: 'my-event',
+      timestampMicros: `${date.valueOf()}000`
+    }],
+    userDim: {
+      deviceInfo: {
+        deviceModel: 'Pixel'
+      },
+      geoInfo: {
+        city: 'London',
+        country: 'UK'
+      }
+    }
+  };
+
+  program.helloAnalytics(data, context);
+
+  t.is(console.log.args[0][0], `Function triggered by event: my-resource`);
+  t.is(console.log.args[1][0], `Name: my-event`);
+  t.is(console.log.args[2][0], `Timestamp: ${date}`);
+  t.is(console.log.args[3][0], `Device Model: Pixel`);
+  t.is(console.log.args[4][0], `Location: London, UK`);
+});