Google Cloud - App Engine

​Google Cloud App Engine is a fully managed serverless platform.
Requirements
​Emails with Sendgrid​
​Payments with Stripe (if payments are enabled)
​File Storage (Google Cloud Storage is preferable)
​Database (MongoDB Atlas hosted at GCP or Google SQL are preferable)
App Engine Files
The configuration for the App Engine server is placed at the app-engine.environment.yaml file.
backend/app-engine.production.yaml
backend/app-engine.staging.yaml
runtime: nodejs10
instance_class: F4_1G
​
env_variables:
  # MongoDB only
  DATABASE_CONNECTION: ''
  DATABASE_TRANSACTIONS: false
  # END - MongoDB only
​
  # SQL only
  DATABASE_USERNAME: 'postgres'
  DATABASE_DIALECT: 'postgres'
  DATABASE_PASSWORD: ''
  DATABASE_DATABASE: 'production'
  DATABASE_HOST: ''
  DATABASE_LOGGING: 'true'
  # END - SQL only
​
  DATABASE_INDIVIDUAL_CONNECTIONS_PER_REQUEST: 'false'
  TENANT_MODE: 'multi'
  AUTH_JWT_SECRET: 'GENERATE_SOME_RANDOM_UUID_HERE'
  AUTH_JWT_EXPIRES_IN: '7 days'
  SENDGRID_EMAIL_FROM: ''
  SENDGRID_KEY: ''
  SENDGRID_TEMPLATE_EMAIL_ADDRESS_VERIFICATION: ''
  SENDGRID_TEMPLATE_INVITATION: ''
  SENDGRID_TEMPLATE_PASSWORD_RESET: ''
  FRONTEND_URL: 'https://domain.com:<port>'
  FRONTEND_URL_WITH_SUBDOMAIN: 'https://[subdomain].domain.com:<port>'
  BACKEND_URL: 'https://YOUR_SERVER_URL/api'
  PLAN_STRIPE_SECRET_KEY: ''
  PLAN_STRIPE_WEBHOOK_SIGNIN_SECRET: ''
  PLAN_STRIPE_PRICES_GROWTH: ''
  PLAN_STRIPE_PRICES_ENTERPRISE: ''
  FILE_STORAGE_PROVIDER: 'gcp'
  FILE_STORAGE_BUCKET: ''
  GOOGLE_CLOUD_PLATFORM_CREDENTIALS: '{ "type": "service_account", "project_id": "...", "private_key_id": "...", "private_key": "...", "client_email": "...", "client_id": "...", "auth_uri": "...", "token_uri": "...", "auth_provider_x509_cert_url": "...", "client_x509_cert_url": "..." }'
  AWS_ACCESS_KEY_ID: ''
  AWS_SECRET_ACCESS_KEY: ''
FRONTEND_URL and FRONTEND_URL_WITH_SUBDOMAIN
Set this to your hosted frontend URL (if you have one already). 
BACKEND_URL
Set this one with the URL you received after the first deployment. Don't forget to add the /api suffix. It will be something like https://project-id.appspot.com/api.
Git Ignore
Because that the app-engine.environment.yaml contains sensitive information, is recommended to add it to .gitignore. 
backend/.gitignore
node_modules/
/data
dist/
app-engine.staging.yml
app-engine.production.yml
Files ignored by Git are different from the ones ignored by the Google Cloud Platform, so you must create a .gcloudignore file.
backend/.gcloudignore
.gcloudignore
.git
.gitignore
node_modules/
Google Cloud Project
Go to https://cloud.google.com/ and create an account.
Create a new project for the production environment. To create a staging environment the steps are the same.
Enable billing
The project needs the billing enabled: https://cloud.google.com/billing/docs/how-to/modify-project.
Google SDK
Install the https://cloud.google.com/sdk.
Sign in to your account calling gcloud auth login.
Build
Before deploying, you must install the dependencies and build the application:
npm install
npm run build
Replace the start script
App Engine uses the start script to run the application, but our start script also compiles and watches for changes, which isn't needed for production.
Let's replace the original for npm run start:watch, that we will run on localhost, and leave the npm start for the App Engine.
backend/package.json
{
  "scripts": {
    ...
    "start": "node ./dist/server.js",
    "start:watch": "nodemon --watch \"src/**/*.ts\" -e ts,json --exec \"ts-node --transpile-only ./src/server.ts\"",
    ...
  }
}
Deployment Script
To deploy the application you must run this command:
gcloud app deploy app-engine.staging.yaml --project PROJECT-ID
Let's create deployment scripts to automate this:
backend/package.json
{
  ...
  "scripts": {
    ...
    "deploy:staging": "npm run build && gcloud app deploy app-engine.staging.yaml --project PROJECT-ID-STAGING",
    "deploy:production": "npm run build && gcloud app deploy app-engine.production.yaml --project PROJECT-ID-PRODUCTION"
  }
  ...
}
Now run:
npm run deploy:staging
// or
npm run deploy:production
Backend
Google Cloud - Run
Last modified 2yr ago