Makes speech-to-speech function compatible with Firebase. (#1113)

.kokoro/functions/speech-to-speech.cfg

@@ -3,7 +3,7 @@
 # Set the folder in which the tests are run
 env_vars: {
     key: "PROJECT"
-    value: "functions/speech-to-speech"
+    value: "functions/speech-to-speech/functions/"
 }
 
 # Tell the trampoline which build file to use.

functions/speech-to-speech/.firebaserc

@@ -0,0 +1,5 @@
+{
+  "projects": {
+    "default": ""
+  }
+}

functions/speech-to-speech/.gitignore

@@ -0,0 +1,65 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+firebase-debug.log*
+
+# Firebase cache
+.firebase/
+
+# Firebase config
+
+# Uncomment this if you'd like others to create their own Firebase project.
+# For a team working on the same Firebase project(s), it is recommended to leave
+# it commented so all members can deploy to the same project(s) in .firebaserc.
+# .firebaserc
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env

functions/speech-to-speech/firebase.json

@@ -0,0 +1 @@
+{}

functions/speech-to-speech/index.js → functions/speech-to-speech/functions/index.js

@@ -17,10 +17,19 @@
 
 // This sample uses the UUID library to generate the output filename.
 const uuid = require('uuid/v4');
+const functions = require('firebase-functions');
 
 const googleCloudProject = process.env.GOOGLE_CLOUD_PROJECT;
-const supportedLanguageCodes = process.env.SUPPORTED_LANGUAGE_CODES.split(',');
-const outputBucket = process.env.OUTPUT_BUCKET;
+// The supportedLanguageCodes and outputBucket parameters take the value from
+// environment variables by default.
+const firebaseConfigured = typeof functions.config().playchat !== 'undefined';
+const languageCodesParam = firebaseConfigured
+  ? functions.config().playchat.supported_language_codes
+  : process.env.SUPPORTED_LANGUAGE_CODES;
+const supportedLanguageCodes = languageCodesParam.split(',');
+const outputBucket = firebaseConfigured
+  ? functions.config().playchat.output_bucket
+  : process.env.OUTPUT_BUCKET;
 const outputAudioEncoding = 'MP3';
 const voiceSsmlGender = 'NEUTRAL';
 // Declare the API clients as global variables to allow them to initiaze at cold start.
@@ -29,7 +38,7 @@ const textTranslationClient = getTextTranslationClient();
 const textToSpeechClient = getTextToSpeechClient();
 const storageClient = getStorageClient();
 
-exports.speechTranslate = (request, response) => {
+exports.speechTranslate = functions.https.onRequest((request, response) => {
   let responseBody = {};
 
   validateRequest(request)
@@ -105,7 +114,7 @@ exports.speechTranslate = (request, response) => {
       console.error(error);
       response.status(400).send(error.message);
     });
-};
+});
 
 // [START call_speech_to_text]
 function callSpeechToText(

functions/speech-to-speech/package.json → functions/speech-to-speech/functions/package.json

@@ -5,13 +5,12 @@
   "homepage": "https://cloud.google.com/solutions/mobile/",
   "license": "Apache-2.0",
   "author": "Google LLC",
+  "private": true,
+  "node": "6",
   "repository": {
     "type": "git",
     "url": "https://github.com/GoogleCloudPlatform/nodejs-docs-samples.git"
   },
-  "engines": {
-    "npm": ">= 4.0.0"
-  },
   "files": [
     "index.js"
   ],
@@ -27,14 +26,21 @@
     "local-test": "mocha test/index.test.js",
     "system-test": "mocha --timeout 20000 test/sample.integration.http.test.js",
     "pretest": "sh test/updateFunctions.sh",
-    "test": "npm run local-test && npm run system-test"
+    "test": "npm run local-test && npm run system-test",
+    "serve": "firebase serve --only functions",
+    "shell": "firebase functions:shell",
+    "start": "npm run shell",
+    "deploy": "firebase deploy --only functions",
+    "logs": "firebase functions:log"
   },
   "dependencies": {
     "@google-cloud/speech": "^2.1.0",
     "@google-cloud/storage": "^2.0.3",
     "@google-cloud/text-to-speech": "^0.4.0",
     "@google-cloud/translate": "^2.1.2",
-    "uuid": "^3.3.2"
+    "uuid": "^3.3.2",
+    "firebase-admin": "~6.0.0",
+    "firebase-functions": "^2.1.0"
   },
   "devDependencies": {
     "@google-cloud/functions-emulator": "^1.0.0-beta.5",