Merge pull request #504 from garden-io/simple-project-node-service

docs(examples): add node-service back to simple-project

examples/simple-project/services/node-service/.dockerignore

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+node_modules
+Dockerfile
+garden.yml
+app.yaml

examples/simple-project/services/node-service/Dockerfile

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+FROM node:9-alpine
+
+ENV PORT=8080
+EXPOSE ${PORT}
+WORKDIR /app
+
+ADD package.json /app
+RUN npm install
+
+ADD . /app
+
+CMD ["npm", "start"]

examples/simple-project/services/node-service/app.js

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+const express = require('express');
+const request = require('request-promise')
+const app = express();
+
+// Unless configured otherwise, the hostname is simply the service name
+const goServiceEndpoint = `http://go-service/hello-go`;
+
+app.get('/hello-node', (req, res) => res.send('Hello from Node service!'));
+
+app.get('/call-go-service', (req, res) => {
+  // Query the go-service and return the response
+  request.get(goServiceEndpoint)
+    .then(message => {
+      res.json({
+        message,
+      })
+    })
+    .catch((err) => {
+      res.statusCode = 500
+      res.json({
+        error: err,
+        message: "Unable to reach service at " + goServiceEndpoint,
+      })
+    });
+});
+
+module.exports = { app }

examples/simple-project/services/node-service/garden.yml

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+module:
+  name: node-service
+  description: Node service container
+  type: container
+  services:
+    - name: node-service
+      command: [npm, start]
+      ports:
+        - name: http
+          containerPort: 8080
+      ingresses:
+        - path: /hello-node
+          port: http
+        - path: /call-go-service
+          port: http
+      dependencies:
+        - go-service
+  tests:
+    - name: unit
+      args: [npm, test]
+    - name: integ
+      args: [npm, run, integ]
+      dependencies:
+        - go-service

examples/simple-project/services/node-service/main.js

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+const { app } = require('./app');
+
+app.listen(process.env.PORT, '0.0.0.0', () => console.log('Node service started'));

examples/simple-project/services/node-service/package.json

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+{
+  "name": "node-service",
+  "version": "1.0.0",
+  "description": "Simple Node.js docker service",
+  "main": "main.js",
+  "scripts": {
+    "start": "node main.js",
+    "test": "echo OK",
+    "integ": "node_modules/mocha/bin/mocha test/integ.js"
+  },
+  "author": "garden.io <[email protected]>",
+  "license": "ISC",
+  "dependencies": {
+    "express": "^4.16.2",
+    "request": "^2.83.0",
+    "request-promise": "^4.2.2"
+  },
+  "devDependencies": {
+    "mocha": "^5.1.1",
+    "supertest": "^3.0.0"
+  }
+}

examples/simple-project/services/node-service/test/integ.js

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+const supertest = require("supertest")
+const { app } = require("../app")
+
+describe('GET /call-go-service', () => {
+  const agent = supertest.agent(app)
+
+  it('should respond with a message from go-service', (done) => {
+    agent
+      .get("/call-go-service")
+      .expect(200, { message: "Hello from Go!" })
+      .end((err) => {
+        if (err) return done(err)
+        done()
+      })
+  })
+})
+