renovate/lib/manager/bazel/update.js

const crypto = require('crypto');
const got = require('got');

module.exports = {
  updateDependency,
};

async function updateDependency(fileContent, upgrade) {
  try {
    logger.debug(`bazel.updateDependency(): ${upgrade.newValue}`);
    let newDef;
    if (
      upgrade.depType === 'git_repository' ||
      upgrade.depType === 'go_repository'
    ) {
      newDef = upgrade.def.replace(
        /tag = "[^"]+"/,
        `tag = "${upgrade.newValue}"`
      );
    } else if (upgrade.depType === 'http_archive') {
      const [, shortRepo] = upgrade.repo.split('/');
      const newUrl = `https://github.com/${upgrade.repo}/releases/download/${
        upgrade.newValue
      }/${shortRepo}-${upgrade.newValue}.tar.gz`;
      const file = (await got(newUrl, { encoding: null })).body;
      const hash = crypto
        .createHash('sha256')
        .update(file)
        .digest('hex');
      const valuePattern = new RegExp(
        upgrade.currentValue.replace(/\./g, '\\.'),
        'g'
      );
      newDef = upgrade.def.replace(valuePattern, upgrade.newValue);
      newDef = newDef.replace(/sha256 = "[^"]+"/, `sha256 = "${hash}"`);
    }
    logger.debug({ oldDef: upgrade.def, newDef });
    const existingDef = new RegExp(
      `${upgrade.depType}\\([^\\)]+name = "${upgrade.depName}"[^\\)]+\\)\n`
    );
    return fileContent.replace(existingDef, newDef);
  } catch (err) {
    logger.info({ err }, 'Error setting new bazel WORKSPACE version');
    return null;
  }
}