failover-sdk/dist/metrics.d.ts

One-line API failover with zero downtime. Native Rust performance with TypeScript interface.

export interface MetricsSummary {
    total_requests: number;
    total_failures: number;
    total_failovers: number;
    active_connections: number;
    uptime_seconds: number;
    average_response_time_ms: number;
    requests_per_second: number;
}
export interface ProviderMetrics {
    provider: string;
    requests: number;
    successes: number;
    failures: number;
    average_response_time_ms: number;
    total_response_time_ms: number;
    last_request_time: number;
    health_score: number;
}
export interface FailoverEvent {
    timestamp: number;
    from_provider: string;
    to_provider: string;
    reason: string;
    service: string;
    operation: string;
}
export interface RequestMetric {
    timestamp: number;
    provider: string;
    service: string;
    operation: string;
    method: string;
    status_code: number;
    response_time_ms: number;
    success: boolean;
}
export declare class MetricsManager {
    private static initialized;
    /**
     * Initialize the metrics system (call once at startup)
     */
    static initialize(): void;
    /**
     * Track a request
     */
    static trackRequest(provider: string, service: string, operation: string, method: string, status_code: number, response_time_ms: number): void;
    /**
     * Track a failover event
     */
    static trackFailover(from_provider: string, to_provider: string, reason: string, service?: string, operation?: string): void;
    /**
     * Get metrics summary
     */
    static getSummary(): MetricsSummary;
    /**
     * Get provider-specific metrics
     */
    static getProviderMetrics(): Record<string, ProviderMetrics>;
    /**
     * Get recent failover events
     */
    static getFailoverEvents(): FailoverEvent[];
    /**
     * Get recent requests
     */
    static getRecentRequests(limit?: number): RequestMetric[];
    /**
     * Export metrics in Prometheus format
     */
    static exportPrometheus(): string;
    /**
     * Reset all metrics
     */
    static reset(): void;
    /**
     * Create Express.js middleware for automatic request tracking
     */
    static createExpressMiddleware(): (req: {
        method: string;
        path: string;
    }, res: {
        statusCode: number;
        get: (header: string) => string | undefined;
        on: (event: string, callback: () => void) => void;
    }, next: () => void) => void;
}
export declare function initialize(): void;
export declare function trackRequest(provider: string, service: string, operation: string, method: string, status_code: number, response_time_ms: number): void;
export declare function trackFailover(from_provider: string, to_provider: string, reason: string): void;
export declare function getSummary(): MetricsSummary;
export declare function getProviderMetrics(): Record<string, ProviderMetrics>;
export declare function exportPrometheus(): string;
export declare function createExpressMiddleware(): (req: {
    method: string;
    path: string;
}, res: {
    statusCode: number;
    get: (header: string) => string | undefined;
    on: (event: string, callback: () => void) => void;
}, next: () => void) => void;
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