main.js

// compile with:
//		elm make Test/App.elm --output elm.js

// load Elm module
const elm = require('./elm.js');

// run with:
//      node main.js <aws accessKeyId> <aws secretAccessKey> --debug --dry-run
//
//           --debug and --dry-run parameters are optional.
//           if --debug is specified, then debug logging will be enabled.
//           if --dry-run is specified, then the program's configuration will be printed, and the program will exit without running the tests.

// Get command line arguments
const accessKeyId = process.argv[2];
const secretAccessKey = process.argv[3];
const debug = process.argv[4] || '';
const dryrun = process.argv[5] || '';

const flags = {
    accessKeyId,
    secretAccessKey,
    debug,
    dryrun,
    seed: Math.floor(Math.random()*0x0FFFFFFF)
};

// get Elm ports
const ports = elm.App.worker(flags).ports;

// keep our app alive until we get an exitCode from Elm or SIGINT or SIGTERM (see below)
setInterval(id => id, 86400);

ports.exitApp.subscribe(exitCode => {
	console.log('Exit code from Elm:', exitCode);
	process.exit(exitCode);
});

process.on('uncaughtException', err => {
	console.log(`Uncaught exception:\n`, err);
	process.exit(1);
});

process.on('SIGINT', _ => {
	console.log(`SIGINT received.`);
	ports.externalStop.send(null);
});

process.on('SIGTERM', _ => {
	console.log(`SIGTERM received.`);
	ports.externalStop.send(null);
});