import { PriorityQueue } from "../domain/priority-queue/priority-queue";
import { Request } from "../domain/request";
import { Statistics } from "../domain/statistics/statistics";
import { PidController } from "./pid-controller";
export declare class Rejector {
    private readonly priorityQueue;
    private readonly statistics;
    private readonly pidController;
    readonly initialThreshold: number;
    private readonly INITIAL_THRESHOLD;
    private threshold;
    private readonly MAX_QUEUE_EMPTY_TIME;
    private logger;
    constructor(priorityQueue: PriorityQueue, statistics: Statistics, pidController: PidController, initialThreshold: number, pidControllerInterval: number);
    process(request: Request<any>): void;
    updateThreshold(newThreshold: number): void;
    startThresholdCheck(interval: number): void;
    private isServiceOverloaded;
    private updateThresholdByPercentile;
    private updateThresholdByLinealRecovery;
}