rpmbuild/src/main.ts

const core = require('@actions/core');
const github = require('@actions/github');
const exec = require('@actions/exec');
const io = require('@actions/io');
const download_tar = require('./download-release-archive');
const cp = require('child_process');

async function run() {
  try {

    // Get github context data
    const context = github.context;

    const owner = context.repo.owner
    const repo = context.repo.repo
    const ref = context.ref

    const version = "1.0.0"

    // get inputs from workflow
    const specFile = core.getInput('spec_file');

    // setup rpm tree
    await exec.exec('rpmdev-setuptree');

    // Copy spec file from path specFile to /root/rpmbuild/SPECS/
    await exec.exec(`cp /github/workspace/${specFile} /github/home/rpmbuild/SPECS/`);

    // Dowload tar.gz file of source code
    await exec.exec(`curl -L --output tmp.tar.gz https://api.github.com/repos/${owner}/${repo}/tarball/${ref}`)

    // create directory to match source file - repo-version
    await exec.exec(`mkdir ${repo}-${version}`);

    // Extract source code to directory
    await exec.exec(`tar xvf tmp.tar.gz -C ${repo}-${version} --strip-components 1`);

    // Create Source tar.gz file
    await exec.exec(`tar -czvf ${repo}-${version}.tar.gz ${repo}-${version}`);

    // Get repo files from /github/workspace/
    await exec.exec('ls -la ');
    // Copy tar.gz file to source
    await exec.exec(`cp ${repo}-${version}.tar.gz /github/home/rpmbuild/SOURCES/`);

    // Execute rpmbuild 
    try {
      await exec.exec(
        `rpmbuild -ba /github/home/rpmbuild/SPECS/${specFile}`
      );
    } catch (err) {
      core.setFailed(`action failed with error: ${err}`);
    }

    // Verify RPM created
    await exec.exec('ls /github/home/rpmbuild/RPMS');

    // setOutput rpm_path to /root/rpmbuild/RPMS , to be consumed by other actions like 
    // actions/upload-release-asset 

    let myOutput = '';
    await cp.exec('ls /github/home/rpmbuild/SRPMS/', (err, stdout, stderr) => {
      if (err) {
        //some err occurred
        console.error(err)
      } else {
          // the *entire* stdout and stderr (buffered)
          console.log(`stdout: ${stdout}`);
          myOutput = myOutput+`${stdout}`.trim();
          console.log(`stderr: ${stderr}`);
        }
      });


    // only contents of workspace can be changed by actions and used by subsequent actions 
    // So copy all generated rpms into workspace , and publish output path relative to workspace
    await exec.exec(`mkdir -p rpmbuild/SRPMS`)

    await exec.exec(`cp /github/home/rpmbuild/SRPMS/${myOutput} rpmbuild/SRPMS`)

    await exec.exec(`ls -la rpmbuild/SRPMS`)

    // set output to path relative to workspace ex ./rpm/
    core.setOutput("source_rpm_path", `rpmbuild/SRPMS`); // make option to upload source rpm

  } catch (error) {
    core.setFailed(error.message);
  }
}

run();