import type { HealthMetrics } from "../types/index.js";
export declare class TelemetryService {
    private static instance;
    private tracerProvider?;
    private enabled;
    private initialized;
    private usingExternalTracerProvider;
    private meter?;
    private tracer?;
    private aiRequestCounter?;
    private aiRequestDuration?;
    private aiTokensUsed?;
    private aiProviderErrors?;
    private aiCostUsd?;
    private mcpToolCalls?;
    private connectionCounter?;
    private responseTimeHistogram?;
    private activeConnectionCount;
    private errorCount;
    private requestCount;
    private totalResponseTime;
    private responseTimeCount;
    private constructor();
    static getInstance(): TelemetryService;
    private isTelemetryEnabled;
    private hasExternalTracerProvider;
    private adoptExternalTracerProvider;
    private initializeTelemetry;
    private initializeMetrics;
    initialize(): Promise<void>;
    /**
     * @deprecated Vercel AI SDK's experimental_telemetry creates ai.generateText/ai.streamText
     * spans automatically via OpenTelemetry. Using this method would create duplicate spans.
     * Kept for potential future use with non-Vercel providers (e.g., Amazon Bedrock).
     * See: TelemetryHandler.getTelemetryConfig() for the active telemetry path.
     */
    traceAIRequest<T>(provider: string, operation: () => Promise<T>, operationType?: string): Promise<T>;
    recordAIRequest(provider: string, model: string, tokens: number, duration: number, cost?: number): void;
    recordAIError(provider: string, error: Error): void;
    recordMCPToolCall(toolName: string, duration: number, success: boolean): void;
    recordConnection(type: "websocket" | "sse" | "http"): void;
    recordConnectionClosed(type: "websocket" | "sse" | "http"): void;
    recordResponseTime(endpoint: string, method: string, duration: number): void;
    recordCustomMetric(name: string, value: number, labels?: Record<string, string>): void;
    recordCustomHistogram(name: string, value: number, labels?: Record<string, string>): void;
    getHealthMetrics(): Promise<HealthMetrics>;
    isEnabled(): boolean;
    getStatus(): {
        enabled: boolean;
        initialized: boolean;
        endpoint?: string;
        service?: string;
        version?: string;
    };
    private getDurationBucket;
    private getStatusBucket;
    shutdown(): Promise<void>;
}