Posting a budget alert of Google Cloud Platform to Slack using Cloud Functions

index.js

const axios = require('axios');

const slackUrl = 'https://hooks.slack.com/services/XXXXXXXXX/XXXXXXXXXXX/XXXXXXXXXXXXXXXXXXXXXXXX';

exports.notifyBudgetAlert = (event, context) => {
  if (event.data) {
    const data = JSON.parse(Buffer.from(event.data, 'base64').toString());

    if (data.costAmount === 0) {
      console.log('Skipped the process because the cost amount is zero. Budget name: ' + data.budgetDisplayName);
      return;
    }

    const message = ''
      + '- Budget name: ' + data.budgetDisplayName + '\n'
      + '- Cost amount: ' + data.costAmount + '\n'
      + '- Budget amount: ' + data.budgetAmount + '\n'

    console.log(message);

    const body = { text: message };

    axios
      .post(slackUrl, body)
      .then(res => console.log(res.data))
      .catch(res => console.log(res));
  } else {
    console.log('Skipped the process because the data is empty.');
  }
};

package.json

{
  "name": "notify-budget-alert",
  "version": "0.0.1",
  "dependencies": {
    "@google-cloud/pubsub": "^0.18.0",
    "axios": "^0.25.0"
  }
}