import { IContractRepository } from '../../domain/repositories/IContractRepository';
import { ICache } from '../../domain/services/caching/interfaces/ICache';
import { IDomainEventPublisher } from '../../domain/shared/events';
/**
 * Health status enumeration
 */
export declare enum HealthStatus {
    HEALTHY = "healthy",
    UNHEALTHY = "unhealthy",
    DEGRADED = "degraded"
}
/**
 * Health check result
 */
export interface HealthCheckResult {
    status: HealthStatus;
    timestamp: Date;
    duration: number;
    details: Record<string, any>;
}
/**
 * Individual health check
 */
export interface HealthCheck {
    name: string;
    description: string;
    check: () => Promise<HealthCheckResult>;
    critical: boolean;
    timeout: number;
}
/**
 * Overall health status
 */
export interface SystemHealth {
    status: HealthStatus;
    timestamp: Date;
    duration: number;
    checks: Record<string, HealthCheckResult>;
    summary: {
        total: number;
        healthy: number;
        unhealthy: number;
        degraded: number;
    };
}
/**
 * Health Checker - System health monitoring
 * Provides comprehensive health checks for all system components
 */
export declare class HealthChecker {
    private readonly repository?;
    private readonly cache?;
    private readonly eventPublisher?;
    private checks;
    constructor(repository?: IContractRepository | undefined, cache?: ICache | undefined, eventPublisher?: IDomainEventPublisher | undefined);
    /**
     * Add a custom health check
     */
    addCheck(check: HealthCheck): void;
    /**
     * Remove a health check by name
     */
    removeCheck(name: string): void;
    /**
     * Run all health checks
     */
    checkHealth(): Promise<SystemHealth>;
    /**
     * Run a specific health check
     */
    checkComponent(name: string): Promise<HealthCheckResult | null>;
    /**
     * Get all registered health checks
     */
    getChecks(): readonly HealthCheck[];
    private runCheckWithTimeout;
    private initializeChecks;
}
/**
 * Global health checker instance
 */
export declare const healthChecker: HealthChecker;
//# sourceMappingURL=HealthChecker.d.ts.map