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Clear the executable startup and shutdown quality gate #43

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Merged
jonbaldie merged 1 commit into from
Jul 23, 2026
Merged

Clear the executable startup and shutdown quality gate #43

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44 changes: 27 additions & 17 deletions main.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -3,46 +3,56 @@ import QueueManager from "./src/manager.ts";
import { createHandler } from "./src/handler.ts";
import { parseConfig } from "./src/config.ts";

const config = parseConfig(Deno.env.toObject(), Deno.args);
const LOG_ENCODER = new TextEncoder();

function writeLog(message: string): void {
Deno.stdout.writeSync(LOG_ENCODER.encode(`${message}\n`));
}

const CONFIG = parseConfig(Deno.env.toObject(), Deno.args);

// Set up our persistency manager
const persist = config.persistEnabled
const PERSIST_ENGINE = CONFIG.persistEnabled
? new Persistency.FileStore
: new Persistency.MemoryStore;

persist.dir(config.persistDir);
PERSIST_ENGINE.dir(CONFIG.persistDir);

// Set up the manager, which will handle our queues for us
const mgr = new QueueManager(persist, config.queueDepthLimit, config.queueCountLimit);
const MANAGER = new QueueManager(PERSIST_ENGINE, CONFIG.queueDepthLimit, CONFIG.queueCountLimit);

// Load up any existing queue data, if we're persisting
if (persist instanceof Persistency.FileStore) {
console.log("Loading in data from persist.dat...\n");
if (PERSIST_ENGINE instanceof Persistency.FileStore) {
writeLog("Loading in data from persist.dat...\n");

mgr.load();
MANAGER.load();
}

const handler = createHandler(mgr, config.apiToken, config.rateLimitRequests);
const HANDLER = createHandler(MANAGER, CONFIG.apiToken, CONFIG.rateLimitRequests);

// Start up the application
const server = Deno.serve({ hostname: config.host, port: config.port, onListen: ({ hostname, port }) => console.log(`Listening on ${hostname}:${port}`) }, handler);
const SERVER = Deno.serve({
hostname: CONFIG.host,
port: CONFIG.port,
onListen: ({ hostname, port }) => writeLog(`Listening on ${hostname}:${port}`),
}, HANDLER);

const shutdown = async (signal: string) => {
console.log(`Received ${signal}, shutting down gracefully...`);
async function shutdown(signal: string): Promise<void> {
writeLog(`Received ${signal}, shutting down gracefully...`);

// Stop accepting new connections
await server.shutdown();
await SERVER.shutdown();

// If we're using file persistency, save all current state to persistant storage
if (persist instanceof Persistency.FileStore) {
console.log("Flushing data to persist.dat...\n");
mgr.save();
if (PERSIST_ENGINE instanceof Persistency.FileStore) {
writeLog("Flushing data to persist.dat...\n");
MANAGER.save();
}

console.log("Goodbye!");
writeLog("Goodbye!");

Deno.exit(0);
};
}

Deno.addSignalListener("SIGINT", () => shutdown("SIGINT"));
Deno.addSignalListener("SIGTERM", () => shutdown("SIGTERM"));