GCP Pub/Sub to Slack message Cloud Function

index.js

const https = require('https');
const url = require('url');
const slackWebhookURL = 'https://hooks.slack.com/services/T00000000/B00000000/XXXXXXXXXXXXXXXXXXXXXXXX'; // CHANGE ME PLZ!

exports.gceAudit = (event, callback) => {
  const msg = JSON.parse(Buffer.from(event.data.data, 'base64').toString());

  const slackRequest = https.request({
    hostname: url.parse(slackWebhookURL).hostname,
    method: 'POST',
    path: url.parse(slackWebhookURL).path,
    headers: {
      'Content-Type': 'application/json',
    }
  });

  slackRequest.write(JSON.stringify({
    'text': `*Project :* ${msg.resource.labels.project_id}
*Zone :* ${msg.resource.labels.zone}
*Name :* ${msg.protoPayload.resourceName.split('/').pop()}
*Method :* ${msg.protoPayload.methodName.split('.').pop()}
*Status :* ${msg.operation.first ? 'Started' : 'Finished'}`,
    'mrkdwn': true
  }));
  slackRequest.end();
  callback();
};