@penkov/tasks_queue/dist/tasks-queue.worker.d.ts

A lightweight PostgreSQL-backed task queue system with scheduling, retries, backoff strategies, and priority handling. Designed for efficiency and observability in modern Node.js applications.

import { TasksQueueDao } from "./tasks-queue.dao.js";
import { TasksWorker } from "./tasks-worker.js";
import { Clock } from "./clock.js";
export declare class TasksQueueWorker {
    private readonly tasksQueueDao;
    private readonly clock;
    private readonly poolName;
    private readonly workers;
    private readonly pipeline;
    private started;
    private readonly queueNotifier;
    constructor(tasksQueueDao: TasksQueueDao, concurrency?: number, loopInterval?: number, clock?: Clock, queueNotifier?: (queueName: string) => void, poolName?: string);
    start(): void;
    stop(): Promise<void>;
    runOnce(): Promise<void>;
    registerWorker(queueName: string, worker: TasksWorker): void;
    tasksScheduled(queueName: string): void;
    /**
     * Wake a blocked parent task after a child has reached a terminal state and notify its queue.
     *
     * @param childTaskId child task id
     */
    private wakeBlockedParent;
    private pollNextTask;
    private updatePoolQueuesLabel;
    /**
     * Persist a successful task outcome based on runtime orchestration state.
     *
     * The method handles child spawning, one-time task finishing, and periodic rescheduling.
     *
     * @param task current scheduled task
     * @param context runtime task context
     */
    private persistSuccessfulOutcome;
    private processNextTask;
}