import { Registry } from 'prom-client';
import { MetricsConfig, PushgatewayResponse } from '../interfaces';
export declare class MetricsService {
    private readonly registry;
    private readonly config;
    private readonly counter;
    private readonly gauge;
    private readonly histogram;
    private readonly summary;
    private readonly pushgateway;
    constructor(registry: Registry, config: MetricsConfig);
    incCounter(key: string, labels?: Record<string, string | number>, value?: number): void;
    setGauge(key: string, value: number, labels?: Record<string, string | number>): void;
    observeHistogram(key: string, value: number, labels?: Record<string, string | number>, buckets?: number[]): void;
    observeSummary(key: string, value: number, labels?: Record<string, string | number>, percentiles?: number[]): void;
    pushMetrics(jobName: string): Promise<PushgatewayResponse>;
}