/**
 * Distributed Tracing for Multi-Agent scenarios — AgentProbe v4.12.0
 *
 * Enables trace context propagation across multiple agents in
 * orchestration tests, with span correlation.
 */
import type { OTelSpan } from '../otel';
export interface TraceContext {
    traceId: string;
    spanId: string;
    parentSpanId?: string;
    agentId: string;
    baggage: Record<string, string>;
    startTimeUnixNano: number;
    sampled: boolean;
}
export interface CorrelatedTrace {
    traceId: string;
    agents: string[];
    spans: OTelSpan[];
    rootSpan: OTelSpan;
    timeline: AgentTimeline[];
    totalDurationMs: number;
    crossAgentCalls: CrossAgentCall[];
}
export interface AgentTimeline {
    agentId: string;
    spans: OTelSpan[];
    startMs: number;
    endMs: number;
    durationMs: number;
}
export interface CrossAgentCall {
    fromAgent: string;
    toAgent: string;
    spanId: string;
    operation: string;
    durationMs: number;
}
export declare class DistributedTracer {
    private traces;
    private spans;
    /**
     * Start a new distributed trace for a test.
     */
    startTrace(testId: string): TraceContext;
    /**
     * Propagate trace context to a child agent.
     * Creates a new child span for the agent's work.
     */
    propagateContext(ctx: TraceContext, agentId: string): TraceContext;
    /**
     * Record a span from an agent's work.
     */
    recordSpan(ctx: TraceContext, span: OTelSpan): void;
    /**
     * Complete an agent's trace context (set end time).
     */
    completeContext(ctx: TraceContext, status?: 'OK' | 'ERROR'): void;
    /**
     * Correlate spans across multiple trace contexts into a unified view.
     */
    correlateSpans(traces: TraceContext[]): CorrelatedTrace;
    /**
     * Get all spans for a trace.
     */
    getSpans(traceId: string): OTelSpan[];
    /**
     * Reset internal state.
     */
    reset(): void;
}
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