import { Logger } from '../types';
export declare enum CircuitState {
    CLOSED = "closed",
    OPEN = "open",
    HALF_OPEN = "half_open"
}
export interface CircuitBreakerConfig {
    failureThreshold: number;
    recoveryTimeout: number;
    successThreshold: number;
    monitoringWindow: number;
    minimumRequests: number;
}
export interface CircuitBreakerStats {
    state: CircuitState;
    failureCount: number;
    successCount: number;
    totalRequests: number;
    lastFailureTime?: Date;
    lastSuccessTime?: Date;
    stateChangedAt: Date;
    failureRate: number;
}
export declare class CircuitBreaker {
    private readonly logger;
    private readonly config;
    private state;
    private failureCount;
    private successCount;
    private totalRequests;
    private lastFailureTime?;
    private lastSuccessTime?;
    private stateChangedAt;
    private readonly requestHistory;
    constructor(logger: Logger, config?: Partial<CircuitBreakerConfig>);
    execute<T>(operation: () => Promise<T>, operationName?: string): Promise<T>;
    canExecute(): boolean;
    getStats(): CircuitBreakerStats;
    reset(): void;
    forceOpen(): void;
    private onSuccess;
    private onFailure;
    private shouldOpen;
    private shouldAttemptReset;
    private transitionToClosed;
    private transitionToOpen;
    private transitionToHalfOpen;
    private addToHistory;
    private getRecentRequests;
    private cleanupHistory;
}
export declare class CircuitBreakerManager {
    private readonly logger;
    private readonly breakers;
    private readonly defaultConfig;
    constructor(logger: Logger, defaultConfig?: Partial<CircuitBreakerConfig>);
    getBreaker(serviceName: string, config?: Partial<CircuitBreakerConfig>): CircuitBreaker;
    execute<T>(serviceName: string, operation: () => Promise<T>, config?: Partial<CircuitBreakerConfig>): Promise<T>;
    getAllStats(): Record<string, CircuitBreakerStats>;
    resetAll(): void;
    getOpenCircuits(): string[];
    hasOpenCircuits(): boolean;
}
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