/**
 * Queue Infrastructure
 * Centralized BullMQ queue and worker management
 */
import { Queue, Worker, Job } from "bullmq";
import { PerformanceTracker } from "./performance";
export type QueueJobInput = Record<string, any>;
export type QueueJobOutput = Record<string, any>;
export interface QueueConfig {
    name: string;
    connection?: {
        host: string;
        port: number;
    };
    defaultJobOptions?: {
        removeOnComplete?: boolean;
        removeOnFail?: boolean;
        attempts?: number;
        backoff?: {
            type: string;
            delay: number;
        };
    };
}
/**
 * Queue Factory - Creates standardized BullMQ queues
 */
export declare class QueueFactory {
    /**
     * Create a queue with standard configuration
     */
    static createQueue<TInput extends QueueJobInput, TOutput extends QueueJobOutput>(queueName: string, config?: Partial<QueueConfig>): Queue<TInput, TOutput>;
    /**
     * Create a worker with standard configuration
     */
    static createWorker<TInput extends QueueJobInput, TOutput extends QueueJobOutput>(queueName: string, processor: (job: Job<TInput, TOutput>) => Promise<TOutput>, config?: Partial<QueueConfig>): Worker<TInput, TOutput>;
}
/**
 * Base Queue Manager - Provides common queue operations
 */
export declare abstract class BaseQueueManager<TInput extends QueueJobInput, TOutput extends QueueJobOutput> {
    protected queueName: string;
    protected config?: Partial<QueueConfig>;
    protected queue: Queue<TInput, TOutput>;
    protected worker?: Worker<TInput, TOutput>;
    protected performanceTracker: PerformanceTracker;
    constructor(queueName: string, config?: Partial<QueueConfig>);
    /**
   * Add a job to the queue
   */
    addJob(jobName: string, data: TInput, options?: {
        removeOnComplete?: boolean;
        removeOnFail?: boolean;
        delay?: number;
        attempts?: number;
    }): Promise<{
        jobId: string;
    }>;
    /**
     * Start the worker
     */
    startWorker(processor: (job: Job<TInput, TOutput>) => Promise<TOutput>): void;
    /**
     * Get queue statistics
     */
    getQueueStats(): Promise<{
        waiting: number;
        active: number;
        completed: number;
        failed: number;
    }>;
    /**
     * Get enhanced performance metrics including queue size
     */
    getPerformanceMetrics(): Promise<{
        queueSize: number;
        queueStats: {
            waiting: number;
            active: number;
            completed: number;
            failed: number;
        };
        totalRequests: number;
        averageResponseTime: number;
        successRate: number;
        memoryUsage: NodeJS.MemoryUsage;
        uptime: number;
    }>;
    /**
     * Close queue and worker connections
     */
    close(): Promise<void>;
}