Step by Step Guide to Building a Travis CI API Integration in JS

Introduction

Hey there, fellow developer! Ready to supercharge your CI/CD workflow? Let's dive into integrating the Travis CI API into your JavaScript project. We'll be using the nifty travis-ci package to make our lives easier. Buckle up!

Prerequisites

Before we jump in, make sure you've got:

• Node.js and npm installed (you're a pro, so I'm sure you do)
• A Travis CI account with a project set up
• Your Travis CI API token handy

Setting up the project

Let's get the ball rolling:

mkdir travis-ci-integration
cd travis-ci-integration
npm init -y
npm install travis-ci

Authenticating with Travis CI

Time to make friends with Travis:

const Travis = require('travis-ci');

const travis = new Travis({
  version: '2.0.0'
});

travis.authenticate({
  access_token: 'YOUR_TRAVIS_CI_API_TOKEN'
}, (err) => {
  if (err) {
    console.error('Authentication failed:', err);
  } else {
    console.log('Successfully authenticated with Travis CI!');
  }
});

Basic API operations

Let's flex those API muscles:

Fetching repository information

travis.repos('your-username/your-repo').get((err, res) => {
  if (err) console.error(err);
  else console.log(res);
});

Retrieving build status

travis.repos('your-username/your-repo').builds.get((err, res) => {
  if (err) console.error(err);
  else console.log(res.builds[0].state);
});

Triggering a new build

travis.repos('your-username/your-repo').builds.create({
  request: {
    branch: 'main'
  }
}, (err, res) => {
  if (err) console.error(err);
  else console.log('Build triggered:', res);
});

Advanced usage

Ready to level up? Let's go!

Listening for webhook events

Set up a simple Express server to handle Travis CI webhooks:

const express = require('express');
const app = express();

app.post('/webhook', express.json(), (req, res) => {
  console.log('Received webhook:', req.body);
  res.sendStatus(200);
});

app.listen(3000, () => console.log('Webhook server running on port 3000'));

Customizing build configurations

You can update .travis.yml via the API:

travis.repos('your-username/your-repo').settings.set({
  'builds_only_with_travis_yml': true
}, (err, res) => {
  if (err) console.error(err);
  else console.log('Settings updated:', res);
});

Handling pagination

For those massive result sets:

function getAllBuilds(repo, page = 1, allBuilds = []) {
  travis.repos(repo).builds.get({ page: page }, (err, res) => {
    if (err) {
      console.error(err);
      return;
    }
    allBuilds = allBuilds.concat(res.builds);
    if (res.pagination.is_last) {
      console.log('All builds:', allBuilds);
    } else {
      getAllBuilds(repo, page + 1, allBuilds);
    }
  });
}

getAllBuilds('your-username/your-repo');

Error handling and best practices

Don't let errors catch you off guard:

try {
  // Your Travis CI API calls here
} catch (error) {
  console.error('Oops! Something went wrong:', error);
}

Remember to keep your API token secret and respect rate limits. You're a responsible developer, after all!

Testing your integration

Let's make sure everything's ship-shape:

const assert = require('assert');
const Travis = require('travis-ci');

describe('Travis CI Integration', () => {
  it('should authenticate successfully', (done) => {
    const travis = new Travis({
      version: '2.0.0'
    });

    travis.authenticate({
      access_token: process.env.TRAVIS_TOKEN
    }, (err) => {
      assert.strictEqual(err, null);
      done();
    });
  });

  // Add more tests here
});

Conclusion

And there you have it! You're now a Travis CI API integration wizard. Remember, with great power comes great responsibility. Use your newfound skills wisely, and may your builds always be green!

For more in-depth info, check out the Travis CI API docs and the travis-ci package documentation.

Happy coding, and may the CI/CD force be with you!