import { Job } from '../classes/job';
import { AdvancedOptions } from './advanced-options';
import { QueueBaseOptions } from './queue-options';
import { RateLimiterOptions } from './rate-limiter-options';
import { MetricsOptions } from './metrics-options';
import { KeepJobs } from './keep-jobs';
import { Telemetry } from './telemetry';
import { SandboxedOptions } from './sandboxed-options';
/**
 * An async function that receives `Job`s and handles them.
 */
export type Processor<T = any, R = any, N extends string = string> = (job: Job<T, R, N>, token?: string) => Promise<R>;
export interface WorkerOptions extends QueueBaseOptions, SandboxedOptions {
    /**
     * Optional worker name. The name will be stored on every job
     * processed by this worker instance, and can be used to monitor
     * which worker is processing or has processed a given job.
     */
    name?: string;
    /**
     * Condition to start processor at instance creation.
     *
     * @defaultValue true
     */
    autorun?: boolean;
    /**
     * Amount of jobs that a single worker is allowed to work on
     * in parallel.
     *
     * @defaultValue 1
     * @see {@link https://docs.bullmq.io/guide/workers/concurrency}
     */
    concurrency?: number;
    /**
     * Enable rate limiter
     * @see {@link https://docs.bullmq.io/guide/rate-limiting}
     */
    limiter?: RateLimiterOptions;
    /**
     * Enable collect metrics.
     * @see {@link https://docs.bullmq.io/guide/metrics}
     */
    metrics?: MetricsOptions;
    /**
     * Amount of times a job can be recovered from a stalled state
     * to the `wait` state. If this is exceeded, the job is moved
     * to `failed`.
     *
     * @defaultValue 1
     */
    maxStalledCount?: number;
    /**
     * Number of milliseconds between stallness checks.
     *
     * @defaultValue 30000
     */
    stalledInterval?: number;
    /**
     * You can provide an object specifying max
     * age and/or count to keep.
     * Default behavior is to keep the job in the completed set.
     */
    removeOnComplete?: KeepJobs;
    /**
     * You can provide an object specifying max
     * age and/or count to keep.
     * Default behavior is to keep the job in the failed set.
     */
    removeOnFail?: KeepJobs;
    /**
     *  Skip stalled check for this worker. Note that other workers could still
     *  perform stalled checkd and move jobs back to wait for jobs being processed
     *  by this worker.
     *
     *  @defaultValue false
     */
    skipStalledCheck?: boolean;
    /**
     *  Skip lock renewal for this worker. If set to true, the lock will expire
     *  after lockDuration and moved back to the wait queue (if the stalled check is
     *  not disabled)
     *
     *  @defaultValue false
     */
    skipLockRenewal?: boolean;
    /**
     * Number of seconds to long poll for jobs when the queue is empty.
     *
     * @defaultValue 5
     */
    drainDelay?: number;
    /**
     * Duration of the lock for the job in milliseconds. The lock represents that
     * a worker is processing the job. If the lock is lost, the job will be eventually
     * be picked up by the stalled checker and move back to wait so that another worker
     * can process it again.
     *
     * @defaultValue 30000
     */
    lockDuration?: number;
    /**
     * The time in milliseconds before the lock is automatically renewed.
     *
     * It is not recommended to modify this value, which is by default set to
     * halv the lockDuration value, which is optimal for most use cases.
     */
    lockRenewTime?: number;
    /**
     * This is an internal option that should not be modified.
     *
     * @defaultValue 15000
     */
    runRetryDelay?: number;
    /**
     * More advanced options.
     */
    settings?: AdvancedOptions;
    /**
     * Use Worker Threads instead of Child Processes.
     * Note: This option can only be used when specifying
     * a file for the processor argument.
     *
     * @defaultValue false
     */
    useWorkerThreads?: boolean;
    /**
     * Telemetry Addon
     */
    telemetry?: Telemetry;
}
export interface GetNextJobOptions {
    block?: boolean;
}