dougal-software/lib/www/server/index.js

#!/usr/bin/node

const { ERROR, INFO, DEBUG } = require('DOUGAL_ROOT/debug')(__filename);

async function main () {
	// Check that we're running against the correct database version
	const version = require('./lib/version');
	INFO("Running version", await version.describe());
	version.compatible()
	.then( (versions) => {
		try {
			const api = require('./api');
			const ws = require('./ws');
			const periodicTasks = require('./periodic-tasks').init();

			const { fork } = require('child_process');

			const port = process.env.HTTP_PORT || 3000;
			const host = process.env.HTTP_HOST || "127.0.0.1";
			const path = process.env.HTTP_PATH ?? "/api";
			const server = api.start(port, host, path);
			ws.start(server);

			INFO("Versions:", versions);

			periodicTasks.start();

			const eventManagerPath = [__dirname, "events"].join("/");
			const eventManager = fork(eventManagerPath, /*{ stdio: 'ignore' }*/);

			process.on("SIGINT", async () => {
				DEBUG("Interrupted (SIGINT)");
				eventManager.kill()
				await periodicTasks.cleanup();
				process.exit(0);
			})

			process.on("SIGHUP", async () => {
				DEBUG("Stopping (SIGHUP)");
				eventManager.kill()
				await periodicTasks.cleanup();
				process.exit(0);
			})

			process.on('beforeExit', async () => {
				DEBUG("Preparing to exit");
				eventManager.kill()
				await periodicTasks.cleanup();
			});

			process.on('exit', async () => {
				DEBUG("Exiting");
				// eventManager.kill()
				// periodicTasks.cleanup();
			});
		} catch (err) {
			ERROR(err);
			process.exit(2);
		}
	})
	.catch( ({current, wanted, component}) => {
		console.error(`Fatal error: incompatible ${component} version ${current} (wanted: ${wanted})`);
		ERROR(`Fatal error: incompatible ${component} version ${current} (wanted: ${wanted})`);
		process.exit(1);
	});
}

main();