feat: google cloud run example with graphql

cloud/google-cloud-run/Dockerfile

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+FROM node:20 as base
+WORKDIR /usr/app
+
+FROM base as build
+WORKDIR /usr/app
+ENV NODE_ENV=production
+ENV CI=true
+COPY package.json package-lock.json ./
+RUN npm install --production
+COPY . ./
+
+FROM node:20 as production
+WORKDIR /usr/app
+ENV NODE_ENV=production
+COPY --from=build /usr/app ./
+CMD ["node", "index.js"]

cloud/google-cloud-run/README.md

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+# Google Cloud Run Example
+
+This example shows how to deploy a simplified GraphQL API to
+[Google Cloud Run](https://cloud.google.com/run).
+
+## Prerequisites
+
+Check out the
+[Get started](https://cloud.google.com/run/docs/quickstarts/build-and-deploy/deploy-nodejs-service)
+guide on Google Cloud to set up the project.
+
+## Deploy
+
+```bash
+gcloud run deploy example \
+  --source . \
+  --project=zentered \
+  --region=us-central1 \
+  --memory=256Mi \
+  --platform=managed \
+  --allow-unauthenticated \
+  --use-http2 \
+  --set-env-vars=VERSION=1.0.0
+```
+
+You can set environment variables for the Docker container with
+`--set-env-vars`, `VERSION` is used as an example here.
+
+## Next Steps
+
+- Instead of building from source, you can use
+  [Cloud Build](https://cloud.google.com/build) for continous deployment from a
+  Git respository
+- Cloud Build can create and push Docker images to
+  [Artifact Registry](https://cloud.google.com/artifact-registry)

cloud/google-cloud-run/app.js

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+import Fastify from 'fastify'
+import mercurius from 'mercurius'
+
+function build(opts = {}) {
+  const fastify = Fastify(opts)
+
+  const schema = `
+  type Query {
+    add(x: Int, y: Int): Int
+  }
+`
+
+  const resolvers = {
+    Query: {
+      add: async (_, { x, y }) => x + y
+    }
+  }
+
+  fastify.register(mercurius, {
+    schema,
+    graphiql: true,
+    resolvers
+  })
+
+  return fastify
+}
+
+export default build

cloud/google-cloud-run/config.js

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+export const port = process.env.PORT || 3000
+export const debug = process.env.DEBUG === 'true'
+export const environment = process.env.NODE_ENV || 'development'
+export const production = process.env.NODE_ENV === 'production'
+export const development = process.env.NODE_ENV !== 'production'
+export const appVersion = process.env.VERSION || '0.0.0'

cloud/google-cloud-run/index.js

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+import build from './app.js'
+import { development, environment, production, port } from './config.js'
+
+const host = development ? 'localhost' : '0.0.0.0'
+
+const start = async () => {
+  // A custom logger, as Cloud Run does not need a transport configuration
+  const envToLogger = {
+    development: {
+      level: 'debug',
+      transport: {
+        target: 'pino-pretty',
+        options: {
+          ignore: 'pid,hostname'
+        }
+      }
+    },
+    production: true,
+    test: false
+  }
+
+  try {
+    const fastify = await build({
+      logger: envToLogger[environment] ?? true,
+      disableRequestLogging: production, // Cloud Run logs requests, no request logging is needed
+      http2: production // Enable HTTP2 for production
+    })
+    await fastify.listen({ port: port, host: host })
+    fastify.ready(() => {
+      console.log(`listening on ${JSON.stringify(fastify.server.address())}`)
+      console.log(fastify.printRoutes())
+    })
+  } catch (err) {
+    console.log(err)
+    // eslint-disable-next-line no-process-exit
+    process.exit(1)
+  }
+}
+
+start()

cloud/google-cloud-run/package.json

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+{
+  "name": "google-cloud-run",
+  "version": "1.0.0",
+  "description": "",
+  "type": "module",
+  "main": "index.js",
+  "scripts": {
+    "start": "node index.js",
+    "test": "node --test"
+  },
+  "keywords": [],
+  "author": "Patrick Heneise <[email protected]> (https://zentered.co)",
+  "dependencies": {
+    "fastify": "^4.17.0",
+    "mercurius": "^13.0.0"
+  },
+  "devDependencies": {
+    "pino-pretty": "^10.0.0"
+  }
+}

cloud/google-cloud-run/test/graphql.test.js

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+'use strict'
+
+import test from 'node:test'
+import assert from 'node:assert/strict'
+import build from './../app.js'
+
+test('/gaphql', async (t) => {
+  const app = build({ logger: false })
+  const expected = { data: { add: 2 } }
+  const query = `{
+    add(x:1,y:1) 
+  }`
+
+  const response = await app.inject({
+    method: 'POST',
+    url: '/graphql',
+    body: { query: query }
+  })
+  const actual = await response.json()
+
+  assert.equal(response.statusCode, 200, 'returns a status code of 200')
+  assert.deepEqual(actual, expected)
+  await app.close
+})