Create a Pulumi stack on PR creation

index.js

var path = require("path");

var { LocalWorkspace } = require("@pulumi/pulumi/x/automation");

// get node command arguments, if the user
// passed `destroy`.
var args = process.argv.slice(2);
var destroy = false;
if (args.length > 0 && args[0]) {
  destroy = args[0] === "destroy";
}

async function run() {
  var stackArgs = {
    stackName: process.env.PR_STACK_NAME, // the PR stackname
    workDir: path.join(__dirname, "../"), // the directory where our Pulumi.yaml exists
  };

  // select `development` stack
  var devWorkspace = await LocalWorkspace.selectStack({
    stackName: "development",
    workDir: stackArgs.workDir,
  });

  // create a new stack for the PR
  console.log(`Creating stack ${stackArgs.stackName}`);
  var stack = await LocalWorkspace.createOrSelectStack(stackArgs);

  if (destroy) {
    // destroy the stack resources
    console.info(`Destroying stack ${stackArgs.stackName}`);
    await stack.destroy({ onOutput: console.info });
    await LocalWorkspace.removeStack(stackArgs.stackName);
    process.exit(0);
  }

  // set the config of the PR stack to the development stack config such as aws:region etc.
  console.log(
    `Setting ${stackArgs.stackName} stack config from development stack`,
  );
  await stack.setAllConfig(await devWorkspace.getAllConfig());
  // change aws:region config value to be different than the development config
  await stack.setConfig("aws:region", { value: "eu-central-1" });

  console.log("Running pulumi up");
  var upOutputs = await stack.up({ onOutput: console.info });
  console.log(
    `Up Summary: \n${JSON.stringify(
      upOutputs.summary.resourceChanges,
      null,
      4,
    )}`,
  );
}

run().catch(function onRunError(error) {
  console.log(error);
});