@sidequest/engine/dist/execution/queue-manager.js

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

import { grantQueueConfig } from '../queue/grant-queue-config.js';

/**
 * Manages queue configurations and retrieves active queues with runnable jobs.
 */
class QueueManager {
    backend;
    queues;
    defaults;
    /**
     * Creates a new QueueManager.
     * @param backend The backend instance.
     * @param queues The queue configurations to manage.
     * @param defaults Optional default queue settings.
     */
    constructor(backend, queues, defaults) {
        this.backend = backend;
        this.queues = queues;
        this.defaults = defaults;
    }
    /**
     * Gets all active queues that have runnable jobs, sorted by priority.
     * @returns A promise resolving to an array of active queue configs.
     */
    async getActiveQueuesWithRunnableJobs() {
        const queueNames = await this.backend.getQueuesFromJobs();
        const queues = [];
        for (const queue of queueNames) {
            const fromConfig = this.queues.find((q) => q.name === queue);
            const queueConfig = await grantQueueConfig(this.backend, { ...fromConfig, name: queue }, this.defaults, false);
            if (queueConfig) {
                queues.push(queueConfig);
            }
        }
        return queues
            .filter((queue) => queue.state === "active")
            .sort((a, b) => {
            return (b.priority ?? 0) - (a.priority ?? 0);
        });
    }
}

export { QueueManager };
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