cloud-build-slack-notifier

index.js

const IncomingWebhook = require('@slack/client').IncomingWebhook;
const SLACK_WEBHOOK_URL = "https://hooks.slack.com/services/abc/xyz/jpt"
const humanizeDuration = require('humanize-duration');

const webhook = new IncomingWebhook(SLACK_WEBHOOK_URL);


// subscribe is the main function called by Cloud Functions.
module.exports.subscribe = (event) => {
 const build = eventToBuild(event.data);

// Add additional statuses to list if you'd like:
// QUEUED, WORKING, SUCCESS, FAILURE,
// INTERNAL_ERROR, TIMEOUT, CANCELLED
  const status = ['SUCCESS', 'FAILURE', 'INTERNAL_ERROR', 'TIMEOUT'];
  if (status.indexOf(build.status) === -1) {
    console.log(`No included status ${build.status}`);
    return;
  }

// Send message to Slack.
  const message = createSlackMessage(build);
  webhook.send(message, (err, res) => {
    if (err) console.log('Error:', err);
  });
};


// eventToBuild transforms pubsub event message to a build object.
const eventToBuild = (data) => {
  return JSON.parse(Buffer.from(data, 'base64').toString());
}

const DEFAULT_COLOR = '#4285F4'; // blue
const STATUS_COLOR = {
  'QUEUED': DEFAULT_COLOR,
  'WORKING': DEFAULT_COLOR,
  'SUCCESS': '#34A853', // green
  'FAILURE': '#EA4335', // red
  'TIMEOUT': '#FBBC05', // yellow
  'INTERNAL_ERROR': '#EA4335', // red
};

// createSlackMessage creates a message from a build object.
const createSlackMessage = (build) => {
  let message = {
    text: `Build ${build.id} finished `,
    mrkdwn: true,
    attachments: [
      {
        color: STATUS_COLOR[build.status] || DEFAULT_COLOR,
        title: 'Build logs',
        title_link: build.logUrl,
        fields: [{
          title: 'Status',
          value: build.status
        }, {
          title: 'Duration',
          value: humanizeDuration(new Date(build.finishTime) - new Date(build.startTime))
        }],
        footer: 'Google Cloud Container Builder',
        footer_icon: 'https://ssl.gstatic.com/pantheon/images/containerregistry/container_registry_color.png',
        ts: Math.round(new Date(build.finishTime).getTime()/1000)
      }
    ]
  };

  // Add source information to the message.
  let subs = build.substitutions || null;
  console.log(`build: `, build);
  if (subs) {
    message.attachments[0].fields.push({
      title: 'Repository',
      value: subs.REPO_NAME
    });

    message.attachments[0].fields.push({
      title: 'Branch - commit SHA',
      value: `${subs.BRANCH_NAME} - ${subs.SHORT_SHA}`
    });
  }

  // Add images to the message.
  let images = build.images || [];
  for (let i = 0, len = images.length; i < len; i++) {
    message.attachments[0].fields.push({
      title: 'Image',
      value: images[i]
    });
  }
  return message
}

package.json

{
  "name": "google-container-slack",
  "version": "0.0.1",
  "description": "Slack integration for Google Cloud Container Builder, using Google Cloud Functions",
  "main": "index.js",
  "dependencies": {
    "@slack/client": "3.9.0",
    "humanize-duration": "3.10.0"
  }
}