@sidequest/engine/dist/utils/shutdown.js

@sidequest/engine is the core engine of SideQuest, a distributed background job processing system for Node.js and TypeScript.

import { logger } from '@sidequest/core';

let shuttingDown = false;
/**
 * Handles the shutdown process, ensuring it only runs once and logs appropriately.
 * @param fn The async function to run during shutdown.
 * @param tag A label for logging.
 * @param signal The signal that triggered shutdown.
 */
async function shutdown(fn, tag, signal) {
    try {
        if (!shuttingDown) {
            shuttingDown = true;
            logger("Engine").info(`[${tag}] Received ${signal}. Shutting down gracefully...`);
            await fn();
        }
        else {
            logger("Engine").info(`[${tag}] Received ${signal} while already shutting down. Forcing shutdown.`);
        }
        logger("Engine").info(`[${tag}] Shutdown complete.`);
        process.exit(0);
    }
    catch (error) {
        logger("Engine").error(`[${tag}] Error during shutdown:`, error);
        process.exit(1);
    }
}
/* eslint-disable @typescript-eslint/no-misused-promises */
/**
 * Registers handlers for SIGINT and SIGTERM to gracefully shut down the process.
 * @param fn The async function to run during shutdown.
 * @param tag A label for logging.
 */
function gracefulShutdown(fn, tag, enabled) {
    if (enabled) {
        process.on("SIGINT", async () => {
            await shutdown(fn, tag, "SIGINT");
        });
        process.on("SIGTERM", async () => {
            await shutdown(fn, tag, "SIGTERM");
        });
    }
}
function clearGracefulShutdown() {
    process.removeAllListeners("SIGINT");
    process.removeAllListeners("SIGTERM");
}

export { clearGracefulShutdown, gracefulShutdown };
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