import { Context, TextMapPropagator, TextMapGetter, TextMapSetter } from '@opentelemetry/api';
import { TraceIdRatioBasedSampler } from '@opentelemetry/sdk-trace';
export declare const VOLUME_BAGGAGE_KEY: "splunk.trace.snapshot.volume";
export declare const DEFAULT_SNAPSHOT_SELECTION_PROBABILITY = 0.01;
export declare class SnapshotPropagator implements TextMapPropagator<unknown> {
    selectionRate: number;
    sampler: TraceIdRatioBasedSampler;
    private _isActive;
    private readonly _startupSelectionRate;
    constructor(selectionRate: number, isActive?: () => boolean);
    setSelectionRate(selectionRate: number | undefined): void;
    inject(_context: Context, _carrier: unknown, _setter: TextMapSetter<unknown>): void;
    extract(context: Context, _carrier: unknown, _getter: TextMapGetter<unknown>): Context;
    fields(): string[];
    attachVolumeBaggage(context: Context): Context;
}
//# sourceMappingURL=SnapshotPropagator.d.ts.map