export interface ProviderState {
    id: string;
    successRate: number;
    avgLatency: number;
    prevSuccessRate: number;
    prevAvgLatency: number;
    totalCalls: number;
    totalFailures: number;
    degradedUntil: number;
}
export interface RoutingDecision {
    timestamp: number;
    selectedProvider: string;
    taskType: 'chat' | 'code' | 'analysis' | 'unknown';
    inputSizeBucket: string;
    reasoning: string;
}
export interface FailureEvent {
    timestamp: number;
    provider: string;
    errorType: string;
    shortMessage: string;
    fullStack: string;
}
export declare class TelemetryStore {
    private static instance;
    private db;
    private metricUpdates;
    private decisionQueue;
    private failureQueue;
    private flushTimer;
    private shuttingDown;
    private constructor();
    static getInstance(): TelemetryStore;
    private initSchema;
    updateMetrics(state: ProviderState): void;
    logDecision(decision: RoutingDecision): void;
    logFailure(failure: FailureEvent): void;
    private checkFlushQueue;
    private startFlushTimer;
    flush(): void;
    private enforceRetention;
    private setupGracefulShutdown;
    getProviderMetrics(): ProviderState[];
    getRecentDecisions(limit?: number): RoutingDecision[];
    getRecentFailures(limit?: number): FailureEvent[];
    getLastUpdatedTime(): number;
}
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