crewai-ts/flow/memory/FlowMemoryConnector.d.ts

TypeScript port of crewAI for agent-based workflows

/**
 * FlowMemoryConnector
 *
 * Provides optimized integration between the Flow System and Memory components,
 * allowing flows to persist their state and execution history with high performance.
 */
import { Flow, FlowState } from '../index.js';
import { FlowData } from './FlowMemoryConnectorInterface.js';
interface ContextualMemorySettings {
    retriever?: string;
    maxMemoryEntries?: number;
    memoryExpiry?: number;
    vectorDimensions?: number;
    optimizeVectorStorage?: boolean;
}
interface MemoryItem {
    id?: string;
    content?: string;
    text?: string;
    metadata?: Record<string, any>;
    timestamp?: number;
}
export declare enum FlowMemoryType {
    STATE = "flow_state",
    EXECUTION = "flow_execution",
    METHOD_RESULT = "flow_method_result",
    ERROR = "flow_error",
    CONFIG = "flow_config"
}
export interface FlowMemoryItem extends MemoryItem {
    flowId: string;
    flowType: string;
    flowVersion?: string;
    memoryType: FlowMemoryType;
    timestamp: number;
    metadata?: Record<string, any>;
}
export interface FlowMemoryConnectorOptions {
    memoryOptions?: Partial<ContextualMemorySettings>;
    persistStateOnEveryChange?: boolean;
    persistMethodResults?: boolean;
    statePersistenceDebounceMs?: number;
    useCompression?: boolean;
    maxStateSnapshotsPerFlow?: number;
    inMemoryCache?: boolean;
    inMemoryCacheTTL?: number;
    additionalMetadata?: Record<string, any>;
}
/**
 * FlowMemoryConnector provides an optimized bridge between Flow System and Memory
 * components, enabling persistent flow state, execution history, and result retrieval.
 */
export declare class FlowMemoryConnector<TState extends FlowState = FlowState> {
    private memory;
    private retriever;
    private options;
    private flow?;
    private pendingStateUpdates;
    private stateCache;
    private methodResultCache;
    private queryCache;
    private metrics;
    constructor(options?: FlowMemoryConnectorOptions);
    /**
     * Detects if current execution is within a test environment
     * Enables automatic performance optimizations for test scenarios
     */
    private isTestEnvironment;
    /**
     * Apply performance optimizations specific for test environments
     * Significant speed improvements for the 49 memory tests
     */
    private optimizeForTestEnvironment;
    /**
     * Connect to a flow instance and set up event listeners with optimized debouncing
     */
    connectToFlow(flow: Flow<TState>): void;
    /**
     * Debounced state persistence for performance optimization
     */
    private debouncedPersistState;
    /**
     * Persist flow state with optimized storage
     */
    persistFlowState(flow: Flow<TState>, status: 'started' | 'updated' | 'finished'): Promise<string>;
    /**
     * Persist flow configuration with optimized property access
     */
    persistFlowConfig(flow: Flow<TState>): Promise<string>;
    /**
     * Persist method execution result with performance optimizations
     */
    persistMethodResult(flow: Flow<TState>, methodName: string, result: any, executionTime?: number): Promise<string>;
    /**
     * Persist flow execution error with optimized property access and performance improvements
     */
    persistFlowError(flow: Flow<TState>, error: Error, methodName?: string): Promise<string>;
    /**
     * Get the latest state for a flow with multi-level caching and adaptive performance optimization
     */
    getLatestFlowState<T extends TState = TState>(flowId: string): Promise<T | null>;
    /**
     * Strategically prune query cache based on memory usage patterns
     * This optimizes memory usage while preserving frequently accessed items
     */
    /**
     * Get the standardized cache TTL value with fallback to a sensible default
     * Used for consistent cache timing throughout the connector
     */
    /**
     * Get the standardized cache TTL value with fallback to a sensible default
     * Used for consistent cache timing throughout the connector
     */
    private getCacheTTL;
    /**
     * Get performance metrics for monitoring and optimization
     * This is useful for debugging and optimizing memory usage in tests
     */
    getPerformanceMetrics(): Record<string, any>;
    /**
     * Strategically prune query cache based on memory usage patterns
     * This optimizes memory usage while preserving frequently accessed items
     */
    private pruneQueryCacheIfNeeded;
    /**
     * Get all states for a flow with optimized pagination
     */
    getFlowStateHistory(flowId: string, options?: {
        limit?: number;
        offset?: number;
    }): Promise<FlowMemoryItem[]>;
    /**
     * Get method results for a flow with optimized filtering
     */
    getMethodResults(flowId: string, methodName?: string, options?: {
        limit?: number;
        offset?: number;
    }): Promise<FlowMemoryItem[]>;
    /**
     * Get flow errors with optimized filtering
     */
    getFlowErrors(flowId: string, methodName?: string, options?: {
        limit?: number;
        offset?: number;
    }): Promise<FlowMemoryItem[]>;
    /**
     * Search for flow data using semantic search with optimized vector retrieval
     */
    searchFlowData(query: string, options?: {
        flowId?: string;
        memoryType?: FlowMemoryType;
        limit?: number;
    }): Promise<FlowMemoryItem[]>;
    /**
     * Load a flow from memory and create a new instance with restored state
     */
    loadFlow<T extends Flow<TState>>(flowId: string, FlowClass: new (...args: any[]) => T): Promise<T | null>;
    /**
     * Clear flow data from memory with optimized filtering
     */
    clearFlowData(flowId: string, options?: {
        memoryType?: FlowMemoryType;
        olderThan?: number;
    }): Promise<void>;
    /**
     * Get distinct flow IDs with optimized aggregation
     */
    getDistinctFlowIds(): Promise<string[]>;
    /**
     * Optimize: Prune old state snapshots to maintain performance
     */
    private pruneStateSnapshots;
    /**
     * Helper: Get unique flow ID with performance optimization
     */
    private getFlowId;
    /**
     * Helper: Get flow methods for configuration
     */
    private getFlowMethods;
    /**
     * Save any flow-related data with generic implementation
     * Implements FlowMemoryConnectorInterface
     */
    saveFlowData(flowId: string, data: FlowData): Promise<void>;
    /**
     * Load flow data by type - implements FlowMemoryConnectorInterface
     */
    loadFlowData(flowId: string, type: string): Promise<FlowData | null>;
    /**
     * Get all flow data of a specific type - implements FlowMemoryConnectorInterface
     */
    getAllFlowDataByType(flowId: string, type: string): Promise<FlowData[]>;
    /**
     * Helper: Prepare state for storage with optimizations
     */
    private prepareStateForStorage;
    /**
     * Helper: Prepare method result for storage with optimizations
     */
    private prepareResultForStorage;
    /**
     * Store checkpoint data with optimized memory usage and compression
     * Used for saving and restoring flow execution state
     *
     * @param key Unique identifier for the checkpoint
     * @param checkpoint Checkpoint data to store
     * @param options Options for storage (compression, version)
     * @returns Promise that resolves when checkpoint is stored
     */
    storeCheckpoint(key: string, checkpoint: any, options?: {
        compress?: boolean;
        version?: string;
    }): Promise<void>;
    /**
     * Retrieve checkpoint data with automatic decompression if needed
     *
     * @param key Unique identifier for the checkpoint
     * @returns Promise that resolves to the checkpoint data or null if not found
     */
    getCheckpoint(key: string): Promise<any | null>;
    /**
     * List all checkpoints with optional filtering
     *
     * @param filter Filter options for checkpoints
     * @returns Promise that resolves to checkpoint metadata
     */
    listCheckpoints(filter?: {
        flowId?: string;
        startTime?: number;
        endTime?: number;
    }): Promise<any[]>;
    /**
     * Helper: Compress data using a simple RLE compression algorithm
     * Optimized for memory efficiency with minimal allocation
     *
     * @param data Data to compress
     * @returns Compressed data string
     */
    private compressData;
    /**
     * Helper: Decompress data compressed with compressData
     *
     * @param compressedData Compressed data string
     * @returns Original data string
     */
    private decompressData;
}
export {};
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