/**
 * Persistence Interface
 *
 * Abstract interface for persisting metrics to any storage backend.
 * Implement this interface to add custom persistence (PostgreSQL, MongoDB, Redis, etc.)
 */
import type { AgentMetrics, ToolMetrics, LatencyMetrics, RequestTimingMetrics } from './types';
/**
 * Interface for persisting metrics
 * Implement this to add custom persistence backends
 */
export interface MetricsPersistence {
    /**
     * Persist agent metrics
     */
    persistAgentMetrics(metrics: AgentMetrics): Promise<void>;
    /**
     * Persist tool metrics
     */
    persistToolMetrics(metrics: ToolMetrics): Promise<void>;
    /**
     * Persist latency metrics
     */
    persistLatencyMetrics(metrics: LatencyMetrics): Promise<void>;
    /**
     * Persist request timing metrics
     */
    persistRequestTimingMetrics(metrics: RequestTimingMetrics): Promise<void>;
    /**
     * Retrieve agent metrics
     */
    getAgentMetrics(timeRangeMs?: number, contextId?: string): Promise<AgentMetrics[]>;
    /**
     * Retrieve tool metrics
     */
    getToolMetrics(timeRangeMs?: number, contextId?: string): Promise<ToolMetrics[]>;
    /**
     * Retrieve latency metrics
     */
    getLatencyMetrics(timeRangeMs?: number): Promise<LatencyMetrics[]>;
    /**
     * Retrieve request timing metrics
     */
    getRequestTimingMetrics(timeRangeMs?: number, contextId?: string): Promise<RequestTimingMetrics[]>;
}
/**
 * No-op persistence implementation (metrics only stored in memory)
 */
export declare class NoOpPersistence implements MetricsPersistence {
    persistAgentMetrics(_metrics: AgentMetrics): Promise<void>;
    persistToolMetrics(_metrics: ToolMetrics): Promise<void>;
    persistLatencyMetrics(_metrics: LatencyMetrics): Promise<void>;
    persistRequestTimingMetrics(_metrics: RequestTimingMetrics): Promise<void>;
    getAgentMetrics(_timeRangeMs?: number, _contextId?: string): Promise<AgentMetrics[]>;
    getToolMetrics(_timeRangeMs?: number, _contextId?: string): Promise<ToolMetrics[]>;
    getLatencyMetrics(_timeRangeMs?: number): Promise<LatencyMetrics[]>;
    getRequestTimingMetrics(_timeRangeMs?: number, _contextId?: string): Promise<RequestTimingMetrics[]>;
}
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