import { HttpPlugin, HttpApp } from '../types';
import { MetricsConfig, MetricsCollector } from '../metrics/types';
import { Logger } from '../../../common';
export interface MetricsPluginOptions extends MetricsConfig {
    exposeEndpoint?: boolean;
    metricsPath?: string;
    metricsFormat?: 'prometheus' | 'json' | 'text';
    includeSystemMetrics?: boolean;
}
export declare class MetricsPlugin implements HttpPlugin {
    readonly name = "metrics";
    readonly version = "0.1.0";
    private collector;
    config: MetricsPluginOptions;
    private metricsMiddleware;
    private startTime;
    private logger;
    constructor(options?: Partial<MetricsPluginOptions>, logger?: Logger);
    install<Framework>(app: HttpApp<Framework>, options?: MetricsPluginOptions): Promise<void>;
    uninstall<Framework>(app: HttpApp<Framework>): void;
    beforeStart<Framework>(app: HttpApp<Framework>): void;
    afterStart<Framework>(app: HttpApp<Framework>): void;
    beforeStop<Framework>(app: HttpApp<Framework>): void;
    afterStop<Framework>(app: HttpApp<Framework>): void;
    gracefulShutdown<Framework>(app: HttpApp<Framework>, signals?: string[]): Promise<void>;
    getCollector(): MetricsCollector;
    getMetricsData(): any;
    private registerMetricsEndpoint;
    private removeMetricsEndpoint;
    private registerSystemMetrics;
    private collectMetrics;
    private formatPrometheusMetrics;
    private formatTextMetrics;
}
export default MetricsPlugin;