/**
 * RAG Retry Handler
 *
 * Provides retry logic with exponential backoff and jitter
 * specifically designed for RAG operations including embeddings,
 * vector queries, and LLM-based extraction.
 */
import type { RAGRetryConfig } from "../../types/index.js";
/**
 * Default retry configuration
 */
export declare const DEFAULT_RAG_RETRY_CONFIG: RAGRetryConfig;
/**
 * Check if an error is retryable based on configuration
 */
export declare function isRetryable(error: unknown, config?: RAGRetryConfig): boolean;
/**
 * Execute a RAG operation with retry logic
 *
 * Implements exponential backoff with jitter to prevent thundering herd.
 * Only retries on errors that are considered retryable.
 *
 * @param operation - Async operation to execute with retries
 * @param config - Partial retry configuration (merged with defaults)
 * @returns Result of the operation
 * @throws Last error if all retry attempts fail
 */
export declare function withRAGRetry<T>(operation: () => Promise<T>, config?: Partial<RAGRetryConfig>): Promise<T>;
/**
 * RAG Retry Handler class for more complex retry scenarios
 */
export declare class RAGRetryHandler {
    private config;
    constructor(config?: Partial<RAGRetryConfig>);
    /**
     * Execute an operation with retry logic
     */
    executeWithRetry<T>(operation: () => Promise<T>, maxRetries?: number): Promise<T>;
    /**
     * Execute multiple operations with retry, collecting results
     * Returns successful results and failed operations with their errors
     */
    executeBatch<T, R>(items: T[], operation: (item: T, index: number) => Promise<R>, options?: {
        concurrency?: number;
        continueOnError?: boolean;
    }): Promise<{
        successful: Array<{
            item: T;
            result: R;
            index: number;
        }>;
        failed: Array<{
            item: T;
            error: Error;
            index: number;
        }>;
        successRate: number;
    }>;
    /**
     * Get current configuration
     */
    getConfig(): RAGRetryConfig;
    /**
     * Update configuration
     */
    updateConfig(config: Partial<RAGRetryConfig>): void;
}
/**
 * Specialized retry handler for embedding operations
 */
export declare class EmbeddingRetryHandler extends RAGRetryHandler {
    constructor(config?: Partial<RAGRetryConfig>);
}
/**
 * Specialized retry handler for vector store operations
 */
export declare class VectorStoreRetryHandler extends RAGRetryHandler {
    constructor(config?: Partial<RAGRetryConfig>);
}
/**
 * Specialized retry handler for metadata extraction
 */
export declare class MetadataExtractionRetryHandler extends RAGRetryHandler {
    constructor(config?: Partial<RAGRetryConfig>);
}
/**
 * Create a retry handler with the core infrastructure withRetry
 */
export declare function createRetryHandler(config?: Partial<RAGRetryConfig>): (operation: () => Promise<unknown>) => Promise<unknown>;
/**
 * Global retry handlers for common RAG operations
 */
export declare const embeddingRetryHandler: EmbeddingRetryHandler;
export declare const vectorStoreRetryHandler: VectorStoreRetryHandler;
export declare const metadataExtractionRetryHandler: MetadataExtractionRetryHandler;