initial commit

Author: brentley

.dockerignore

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+node_modules
+npm-debug.log
+.git

.gitignore

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+node_modules

Dockerfile

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+# FROM node:alpine
+FROM alpine:3.6
+
+# set the default NODE_ENV to production
+# for dev/test build with: docker build --build-arg NODE=development .
+# and the testing npms will be included
+ARG NODE=production
+ENV NODE_ENV ${NODE}
+
+# copy package info early to install npms and delete npm command
+WORKDIR /usr/src/app
+COPY package*.json ./
+RUN apk -U add nodejs nodejs-npm && \
+  npm install && apk del --purge nodejs-npm && \
+  rm -rvf /var/cache/* /root/.npm /tmp/*
+
+# copy the code
+COPY . .
+EXPOSE 3000
+CMD [ "node", "server.js" ]

README.md

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+# Amazon ECS Workshop
+
+This is part of an Amazon ECS workshop at https://ecsworkshop.com

buildspec-test.yml

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+version: 0.2
+
+phases:
+  install:
+    commands:
+      - export IMAGE_TAG=$(echo $CODEBUILD_RESOLVED_SOURCE_VERSION | cut -c 1-7)
+      - export ACCOUNT=$(echo $CODEBUILD_BUILD_ARN |cut -f5 -d:)
+      - export $(cat mu-env.sh)
+      - echo '***** This is the current env:'
+      - printenv
+  build:
+    commands:
+      - curl -m3 -sL -w "%{http_code}\\n" "$BASE_URL" -o /dev/null

buildspec.yml

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+version: 0.2
+
+phases:
+  install:
+    commands:
+      - export IMAGE_TAG=$(echo $CODEBUILD_RESOLVED_SOURCE_VERSION | cut -c 1-7)
+      - export ACCOUNT=$(echo $CODEBUILD_BUILD_ARN |cut -f5 -d:)
+      - echo '***** This is the current env:'
+      - printenv
+      #- echo '***** Download nodejs repo:'
+      #- curl -sL https://deb.nodesource.com/setup_9.x | sudo -E bash -
+      #- echo '***** install nodejs:'
+      #- apt-get install -y nodejs build-essential
+      #- echo '***** install our npms:'
+      #- npm install
+  build:
+    commands:
+      #- echo '***** run tests:'
+      #- npm test -- > testresult.txt
+      # - docker build -t myimage .
+  post_build:
+    commands:
+      - printf '[{"name":"example-backend","imageUri":"%s"}]' $REPOSITORY_URI:$IMAGE_TAG > imagedefinitions.json
+      - echo $IMAGE_TAG > code_hash.txt
+      # - docker pull anchore/cli
+      # - docker run -d -v $(pwd):/source-dir -v /var/run/docker.sock:/var/run/docker.sock --name anchore anchore/cli:latest
+      # - docker exec anchore anchore feeds sync
+      # - docker exec anchore anchore analyze --image myimage --dockerfile /source-dir/Dockerfile
+
+artifacts:
+  files:
+    - '**/*'

code_hash.txt

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+NOHASH

mu.yml

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+---
+service:
+  desiredCount: 3
+  maxSize: 6
+  port: 3000
+  priority: 50
+  pathPatterns:
+  - /*
+  networkMode: awsvpc
+parameters:
+  'mu-service-ecsdemo-nodejs-acceptance':
+    ElbHttpListenerArn:
+        mu-loadbalancer-acceptance-BackendLBHttpListenerArn
+  'mu-service-ecsdemo-nodejs-production':
+    ElbHttpListenerArn:
+        mu-loadbalancer-production-BackendLBHttpListenerArn

package-lock.json

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+{
+	"name": "example-nodejs",
+	"version": "1.0.0",
+	"license": "ISC",
+	"main": "server.js",
+	"scripts": {
+		"test": "mocha"
+	},
+	"dependencies": {
+		"express": "^4.16.2",
+		"express-healthcheck": "^0.1.0",
+		"internal-ip": "^3.0.1",
+		"ip": "^1.1.5",
+		"morgan": "^1.9.0"
+	},
+	"devDependencies": {
+		"mocha": "^4.1.0",
+		"supertest": "^3.0.0"
+	}
+}

package.json

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+// use the express framework
+var express = require('express');
+var app = express();
+
+var fs = require('fs');
+var code_hash = fs.readFileSync('code_hash.txt','utf8');
+console.log (code_hash);
+
+// internal-ip: detect the correct IP based on default gw
+var internalip = require('internal-ip');
+var ipaddress = internalip.v4.sync();
+
+// use ipaddress to find interface netmask
+var ifaces = require('os').networkInterfaces();
+for (var dev in ifaces) {
+  // ... and find the one that matches the criteria
+  var iface = ifaces[dev].filter(function(details) {
+    return details.address === `${ipaddress}` && details.family === 'IPv4';
+  });
+  if(iface.length > 0) ifacenetmask = iface[0].netmask;
+}
+
+// ip: separate out the network using the subnet mask
+var ipnet = require('ip');
+var network = ipnet.mask(`${ipaddress}`, `${ifacenetmask}`)
+
+// morgan: generate apache style logs to the console
+var morgan = require('morgan')
+app.use(morgan('combined'));
+
+// express-healthcheck: respond on /health route for LB checks
+app.use('/health', require('express-healthcheck')());
+
+// label the AZ based on which subnet we are on
+switch (network) {
+  case '10.0.100.0':
+    var az = '1a';
+    break;
+  case '10.0.101.0':
+    var az = '1b';
+    break;
+  case '10.0.102.0':
+    var az = '1c';
+    break;
+  default:
+    var az = 'unknown'
+    break;
+}
+
+// main route
+app.get('/', function (req, res) {
+  res.set({
+  'Content-Type': 'text/plain'
+})
+  res.send(`Node.js backend: Hello! from ${ipaddress} in AZ-${az} commit ${code_hash}`);
+  // res.send(`Hello World! from ${ipaddress} in AZ-${az} which has been up for ` + process.uptime() + 'ms');
+});
+
+// health route - variable subst is more pythonic just as an example
+var server = app.listen(3000, function() {
+  var port = server.address().port;
+  console.log('Example app listening on port %s!', port);
+});
+
+// export the server to make tests work
+module.exports = server;

server.js

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+var request = require('supertest');
+describe('loading express', function () {
+  var server;
+  beforeEach(function () {
+    server = require('../server');
+  });
+  after(function (done) {
+    server.close(done);
+  });
+  it('responds to /', function testSlash(done) {
+  request(server)
+    .get('/')
+    .expect(200, done);
+  });
+  it('responds to /health', function testSlash(done) {
+  request(server)
+    .get('/health')
+    .expect(200, done);
+  });
+  it('404 everything else', function testPath(done) {
+    request(server)
+      .get('/foo/bar')
+      .expect(404, done);
+  });
+});