@sidequest/core/dist/transitions/snooze-transition.js

@sidequest/core is the core package of SideQuest, a distributed background job queue for Node.js and TypeScript applications.

import { logger } from '../logger.js';
import { JobTransition } from './transition.js';

/**
 * Transition for snoozing (delaying) a job.
 *
 * This transition sets the job state to "waiting" and updates the
 * available_at timestamp to the current time plus the specified delay.
 * If the job is currently running, it will decrement the attempt count.
 * This allows the job to be retried after the delay.
 *
 * Only jobs in "waiting" or "running" state can be snoozed.
 */
class SnoozeTransition extends JobTransition {
    /** The delay in milliseconds. */
    delay;
    /**
     * Creates a new SnoozeTransition.
     * @param delay The delay in milliseconds.
     */
    constructor(delay) {
        super();
        this.delay = delay;
    }
    apply(job) {
        logger("Core").info(`Job #${job.id} - ${job.class} snoozed by ${this.delay}ms`);
        // Attempts are only decremented if the job is running and has already been attempted
        // This means that the job will not consider the current run as an attempt
        if (job.state === "running" && job.attempt > 0) {
            job.attempt -= 1;
        }
        job.state = "waiting";
        job.available_at = new Date(Date.now() + this.delay);
        return job;
    }
    shouldRun(job) {
        return ["waiting", "running"].includes(job.state);
    }
}

export { SnoozeTransition };
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