/**
 * Copyright (c) 2020 TypeFox GmbH. All rights reserved.
 * Licensed under the GNU Affero General Public License (AGPL).
 * See License-AGPL.txt in the project root for license information.
 */
import * as opentracing from 'opentracing';
import { Sampler, SamplingDecision } from 'jaeger-client';
export interface TraceContext {
    span?: opentracing.Span;
}
export declare namespace TraceContext {
    function startSpan(operation: string, ctx: TraceContext): opentracing.Span;
    function startAsyncSpan(operation: string, ctx: TraceContext): opentracing.Span;
    function logError(ctx: TraceContext, err: Error): void;
}
export declare class TracingManager {
    setup(serviceName: string, opts?: CustomTracerOpts): void;
    getTracerForService(serviceName: string, opts?: CustomTracerOpts): opentracing.Tracer;
}
export interface CustomTracerOpts {
    perOpSampling?: PerOperationSampling;
}
export interface PerOperationSampling {
    [key: string]: boolean;
}
export declare class PerOperationSampler implements Sampler {
    protected readonly fallback: Sampler;
    protected readonly strategies: PerOperationSampling;
    constructor(fallback: Sampler, strategies: PerOperationSampling);
    name(): string;
    toString(): string;
    isSampled(operation: string, tags: any): boolean;
    onCreateSpan(span: opentracing.Span): SamplingDecision;
    onSetOperationName(span: opentracing.Span, operationName: string): SamplingDecision;
    onSetTag(span: opentracing.Span, key: string, value: any): SamplingDecision;
    equal(other: Sampler): boolean;
    close(callback: () => void): void;
}
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