Pact download binary

README.md

Pact Downloader

Downloads the latest pact binary via wget & curl. Both wget and curl work well with corporate firewalls and proxy settings; assuming you have your system propery configured.

Installation

1. Add this file to your repo under a scripts folder.
2. Run yarn add -D shelljs pino (NOTE if you wish to not have pino, it can be stripped out)
3. Run node ./scripts/pact-download.js
4. Add the following portion to your package.json

"config": {
  "pact_binary_location": "./tmp/pact"
}

5. Run a yarn

Conclusion

Now you can add pact via yarn and node have to worry about it erroring out. Example:

yarn add -D jest-pact @pact-foundation/pact

pact-download.js

const os = require('os');
const fs = require('fs');
const path = require('path');
const shell = require('shelljs');
const pino = require('pino');

const WORKING_DIR = path.join(__dirname, '..', 'tmp', 'pact');
const VERSION_CHECK_PATH = path.join(WORKING_DIR, '.pact-version');
const PACT_LATEST_RELEASES =
  'https://api.github.com/repos/pact-foundation/pact-ruby-standalone/releases/latest';

const logger = pino({ name: 'Pact Downloader', timestamp: false });

let releaseInfo;
releaseInfo = shell.exec(`curl -s ${PACT_LATEST_RELEASES}`, {
  silent: true,
});
releaseInfo = JSON.parse(releaseInfo.stdout);

logger.info('Checking for pact download dir.');
shell.mkdir('-p', WORKING_DIR);

let trigger_download = true;

logger.info('Checking for pact version.');
if (fs.existsSync(VERSION_CHECK_PATH)) {
  trigger_download =
    fs.readFileSync(VERSION_CHECK_PATH).toString() !== releaseInfo.tag_name;
}

if (trigger_download) {
  logger.info('Fetching correct asset');
  const asset = releaseInfo.assets.find((asset) => {
    const name = (asset?.name || '').toString();
    const notCheckSum = !name.includes('checksum');
    switch (os.platform()) {
      case 'darwin':
        return notCheckSum && name.includes('osx');
      default:
        return notCheckSum && name.includes(os.platform());
    }
  });
  if (asset) {
    logger.info('Downloading related asset');
    shell.exec(`wget -P ${WORKING_DIR} ${asset.browser_download_url}`);
    fs.writeFileSync(VERSION_CHECK_PATH, releaseInfo.tag_name);
  } else {
    logger.error('No asset found!');
  }
} else {
  logger.info('No need to download Pact again <3');
}