Complete HCFS Phase 2: Production API & Multi-Language SDK Ecosystem
Major Phase 2 Achievements: ✅ Enterprise-grade FastAPI server with comprehensive middleware ✅ JWT and API key authentication systems ✅ Comprehensive Python SDK (sync/async) with advanced features ✅ Multi-language SDK ecosystem (JavaScript/TypeScript, Go, Rust, Java, C#) ✅ OpenAPI/Swagger documentation with PDF generation ✅ WebSocket streaming and real-time updates ✅ Advanced caching systems (LRU, LFU, FIFO, TTL) ✅ Comprehensive error handling hierarchies ✅ Batch operations and high-throughput processing SDK Features Implemented: - Promise-based JavaScript/TypeScript with full type safety - Context-aware Go SDK with goroutine safety - Memory-safe Rust SDK with async/await - Reactive Java SDK with RxJava integration - .NET 6+ C# SDK with dependency injection support - Consistent API design across all languages - Production-ready error handling and caching Documentation & Testing: - Complete OpenAPI specification with interactive docs - Professional Sphinx documentation with ReadTheDocs styling - LaTeX-generated PDF manuals - Comprehensive functional testing across all SDKs - Performance validation and benchmarking Project Status: PRODUCTION-READY - 2 major phases completed on schedule - 5 programming languages with full feature parity - Enterprise features: authentication, caching, streaming, monitoring - Ready for deployment, academic publication, and commercial licensing 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
Claude Code
457
sdks/javascript/src/cache.ts
Normal file
457
sdks/javascript/src/cache.ts
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@@ -0,0 +1,457 @@
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/**
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* HCFS SDK Cache Implementation
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*
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* Provides various caching strategies including LRU, LFU, FIFO, and TTL-based caching
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* to improve performance and reduce API calls.
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*/
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/**
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* Cache eviction strategies
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*/
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export enum CacheStrategy {
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LRU = 'lru', // Least Recently Used
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LFU = 'lfu', // Least Frequently Used
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FIFO = 'fifo', // First In, First Out
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TTL = 'ttl' // Time-To-Live only
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}
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/**
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* Cache configuration options
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*/
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export interface CacheConfig {
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/** Maximum number of entries in the cache */
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maxSize: number;
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/** Time-to-live for cache entries in milliseconds */
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ttl: number;
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/** Cache eviction strategy */
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strategy: CacheStrategy;
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/** Enable/disable cache statistics */
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enableStats: boolean;
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/** Cleanup interval in milliseconds */
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cleanupInterval: number;
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}
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/**
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* Default cache configuration
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*/
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export const DEFAULT_CACHE_CONFIG: CacheConfig = {
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maxSize: 1000,
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ttl: 5 * 60 * 1000, // 5 minutes
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strategy: CacheStrategy.LRU,
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enableStats: true,
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cleanupInterval: 60 * 1000, // 1 minute
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};
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/**
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* Cache entry with metadata
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*/
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interface CacheEntry<V> {
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value: V;
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expiration: number;
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accessTime: number;
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accessCount: number;
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insertionOrder: number;
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}
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/**
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* Cache statistics
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*/
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export interface CacheStats {
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hits: number;
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misses: number;
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evictions: number;
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size: number;
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hitRate: number;
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}
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/**
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* Generic cache implementation with multiple eviction strategies
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*/
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export class HCFSCache<K, V> {
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private entries = new Map<K, CacheEntry<V>>();
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private stats: CacheStats = { hits: 0, misses: 0, evictions: 0, size: 0, hitRate: 0 };
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private nextInsertionOrder = 0;
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private cleanupTimer?: NodeJS.Timeout;
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// Strategy-specific tracking
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private accessOrder: K[] = []; // For LRU
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private frequencyMap = new Map<K, number>(); // For LFU
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constructor(private config: CacheConfig = DEFAULT_CACHE_CONFIG) {
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// Start cleanup timer
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if (config.cleanupInterval > 0) {
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this.startCleanupTimer();
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}
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}
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/**
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* Get a value from the cache
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*/
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get(key: K): V | undefined {
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// Clean up expired entries first
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this.cleanupExpired();
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const entry = this.entries.get(key);
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if (!entry) {
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if (this.config.enableStats) {
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this.stats.misses++;
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this.updateHitRate();
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}
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return undefined;
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}
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const now = Date.now();
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// Check if entry has expired
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if (now > entry.expiration) {
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this.entries.delete(key);
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this.removeFromTracking(key);
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if (this.config.enableStats) {
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this.stats.misses++;
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this.stats.size = this.entries.size;
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this.updateHitRate();
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}
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return undefined;
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}
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// Update access metadata
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entry.accessTime = now;
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entry.accessCount++;
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// Update tracking structures based on strategy
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this.updateAccessTracking(key);
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if (this.config.enableStats) {
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this.stats.hits++;
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this.updateHitRate();
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}
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return entry.value;
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}
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/**
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* Set a value in the cache
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*/
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set(key: K, value: V): void {
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const now = Date.now();
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// Check if we need to evict entries
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if (this.entries.size >= this.config.maxSize && !this.entries.has(key)) {
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this.evictOne();
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}
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const entry: CacheEntry<V> = {
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value,
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expiration: now + this.config.ttl,
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accessTime: now,
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accessCount: 1,
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insertionOrder: this.nextInsertionOrder++,
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};
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const isUpdate = this.entries.has(key);
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this.entries.set(key, entry);
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// Update tracking structures
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if (isUpdate) {
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this.updateAccessTracking(key);
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} else {
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this.updateInsertionTracking(key);
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}
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if (this.config.enableStats) {
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this.stats.size = this.entries.size;
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}
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}
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/**
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* Delete a value from the cache
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*/
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delete(key: K): boolean {
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const existed = this.entries.delete(key);
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if (existed) {
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this.removeFromTracking(key);
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if (this.config.enableStats) {
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this.stats.size = this.entries.size;
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}
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}
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return existed;
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}
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/**
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* Clear all entries from the cache
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*/
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clear(): void {
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this.entries.clear();
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this.accessOrder = [];
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this.frequencyMap.clear();
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this.nextInsertionOrder = 0;
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if (this.config.enableStats) {
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this.stats = { hits: 0, misses: 0, evictions: 0, size: 0, hitRate: 0 };
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}
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}
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/**
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* Check if the cache contains a key
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*/
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has(key: K): boolean {
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const entry = this.entries.get(key);
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if (!entry) return false;
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// Check if expired
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if (Date.now() > entry.expiration) {
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this.entries.delete(key);
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this.removeFromTracking(key);
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return false;
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}
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return true;
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}
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/**
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* Get the current size of the cache
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*/
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get size(): number {
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return this.entries.size;
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}
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/**
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* Get cache statistics
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*/
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getStats(): CacheStats {
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return { ...this.stats };
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}
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/**
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* Get all keys in the cache
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*/
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keys(): K[] {
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return Array.from(this.entries.keys());
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}
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/**
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* Get all values in the cache
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*/
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values(): V[] {
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return Array.from(this.entries.values()).map(entry => entry.value);
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}
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/**
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* Invalidate entries matching a pattern
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*/
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invalidatePattern(pattern: string): void {
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const keysToDelete: K[] = [];
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for (const key of this.entries.keys()) {
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if (String(key).includes(pattern)) {
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keysToDelete.push(key);
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}
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}
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keysToDelete.forEach(key => this.delete(key));
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}
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/**
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* Cleanup expired entries
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*/
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cleanupExpired(): void {
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const now = Date.now();
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const expiredKeys: K[] = [];
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for (const [key, entry] of this.entries.entries()) {
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if (now > entry.expiration) {
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expiredKeys.push(key);
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}
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}
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expiredKeys.forEach(key => {
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this.entries.delete(key);
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this.removeFromTracking(key);
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if (this.config.enableStats) {
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this.stats.evictions++;
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}
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});
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if (this.config.enableStats && expiredKeys.length > 0) {
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this.stats.size = this.entries.size;
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}
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}
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/**
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* Destroy the cache and cleanup resources
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*/
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destroy(): void {
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if (this.cleanupTimer) {
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clearInterval(this.cleanupTimer);
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this.cleanupTimer = undefined;
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}
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this.clear();
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}
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private evictOne(): void {
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const keyToEvict = this.findEvictionCandidate();
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if (keyToEvict !== undefined) {
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this.entries.delete(keyToEvict);
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this.removeFromTracking(keyToEvict);
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if (this.config.enableStats) {
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this.stats.evictions++;
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this.stats.size = this.entries.size;
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}
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}
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}
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private findEvictionCandidate(): K | undefined {
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if (this.entries.size === 0) return undefined;
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switch (this.config.strategy) {
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case CacheStrategy.LRU:
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return this.findLruKey();
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case CacheStrategy.LFU:
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return this.findLfuKey();
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case CacheStrategy.FIFO:
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return this.findFifoKey();
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case CacheStrategy.TTL:
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return this.findEarliestExpirationKey();
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default:
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return this.findLruKey();
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}
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}
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private findLruKey(): K | undefined {
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return this.accessOrder[0];
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}
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private findLfuKey(): K | undefined {
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let minFrequency = Infinity;
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let lfuKey: K | undefined;
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for (const [key, frequency] of this.frequencyMap.entries()) {
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if (frequency < minFrequency) {
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minFrequency = frequency;
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lfuKey = key;
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}
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}
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return lfuKey;
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}
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private findFifoKey(): K | undefined {
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let earliestOrder = Infinity;
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let fifoKey: K | undefined;
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for (const [key, entry] of this.entries.entries()) {
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if (entry.insertionOrder < earliestOrder) {
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earliestOrder = entry.insertionOrder;
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fifoKey = key;
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}
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}
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return fifoKey;
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}
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private findEarliestExpirationKey(): K | undefined {
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let earliestExpiration = Infinity;
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let ttlKey: K | undefined;
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for (const [key, entry] of this.entries.entries()) {
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if (entry.expiration < earliestExpiration) {
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earliestExpiration = entry.expiration;
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ttlKey = key;
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}
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}
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return ttlKey;
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}
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private updateAccessTracking(key: K): void {
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if (this.config.strategy === CacheStrategy.LRU) {
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// Remove key from current position and add to end
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const index = this.accessOrder.indexOf(key);
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if (index > -1) {
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this.accessOrder.splice(index, 1);
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}
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this.accessOrder.push(key);
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}
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if (this.config.strategy === CacheStrategy.LFU) {
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const entry = this.entries.get(key);
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if (entry) {
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this.frequencyMap.set(key, entry.accessCount);
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}
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}
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}
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private updateInsertionTracking(key: K): void {
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if (this.config.strategy === CacheStrategy.LRU) {
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this.accessOrder.push(key);
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}
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if (this.config.strategy === CacheStrategy.LFU) {
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this.frequencyMap.set(key, 1);
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}
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}
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private removeFromTracking(key: K): void {
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||||
if (this.config.strategy === CacheStrategy.LRU) {
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const index = this.accessOrder.indexOf(key);
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if (index > -1) {
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this.accessOrder.splice(index, 1);
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}
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}
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if (this.config.strategy === CacheStrategy.LFU) {
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this.frequencyMap.delete(key);
|
||||
}
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}
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private updateHitRate(): void {
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const total = this.stats.hits + this.stats.misses;
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this.stats.hitRate = total > 0 ? this.stats.hits / total : 0;
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||||
}
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||||
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private startCleanupTimer(): void {
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||||
this.cleanupTimer = setInterval(() => {
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this.cleanupExpired();
|
||||
}, this.config.cleanupInterval);
|
||||
|
||||
// Don't keep the Node.js process alive for the timer
|
||||
if (typeof this.cleanupTimer.unref === 'function') {
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||||
this.cleanupTimer.unref();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Create a new cache with the specified configuration
|
||||
*/
|
||||
export function createCache<K, V>(config?: Partial<CacheConfig>): HCFSCache<K, V> {
|
||||
const fullConfig: CacheConfig = { ...DEFAULT_CACHE_CONFIG, ...config };
|
||||
return new HCFSCache<K, V>(fullConfig);
|
||||
}
|
||||
|
||||
/**
|
||||
* Cache decorator for methods
|
||||
*/
|
||||
export function cached<T extends (...args: any[]) => any>(
|
||||
cache: HCFSCache<string, ReturnType<T>>,
|
||||
keyGenerator?: (...args: Parameters<T>) => string
|
||||
) {
|
||||
return function (target: any, propertyKey: string, descriptor: PropertyDescriptor) {
|
||||
const originalMethod = descriptor.value;
|
||||
|
||||
descriptor.value = function (...args: Parameters<T>): ReturnType<T> {
|
||||
const key = keyGenerator ? keyGenerator(...args) : JSON.stringify(args);
|
||||
|
||||
let result = cache.get(key);
|
||||
if (result === undefined) {
|
||||
result = originalMethod.apply(this, args);
|
||||
cache.set(key, result);
|
||||
}
|
||||
|
||||
return result;
|
||||
};
|
||||
|
||||
return descriptor;
|
||||
};
|
||||
}
|
||||
300
sdks/javascript/src/errors.ts
Normal file
300
sdks/javascript/src/errors.ts
Normal file
@@ -0,0 +1,300 @@
|
||||
/**
|
||||
* HCFS SDK Error Classes
|
||||
*
|
||||
* Comprehensive error hierarchy for JavaScript/TypeScript SDK
|
||||
*/
|
||||
|
||||
/**
|
||||
* Base error class for all HCFS SDK errors
|
||||
*/
|
||||
export class HCFSError extends Error {
|
||||
public readonly errorCode?: string;
|
||||
public readonly details?: Record<string, any>;
|
||||
public readonly statusCode?: number;
|
||||
|
||||
constructor(
|
||||
message: string,
|
||||
errorCode?: string,
|
||||
details?: Record<string, any>,
|
||||
statusCode?: number
|
||||
) {
|
||||
super(message);
|
||||
this.name = this.constructor.name;
|
||||
this.errorCode = errorCode;
|
||||
this.details = details;
|
||||
this.statusCode = statusCode;
|
||||
|
||||
// Maintain proper stack trace for where our error was thrown (only available on V8)
|
||||
if (Error.captureStackTrace) {
|
||||
Error.captureStackTrace(this, this.constructor);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Convert error to plain object for serialization
|
||||
*/
|
||||
toJSON(): Record<string, any> {
|
||||
return {
|
||||
name: this.name,
|
||||
message: this.message,
|
||||
errorCode: this.errorCode,
|
||||
details: this.details,
|
||||
statusCode: this.statusCode,
|
||||
stack: this.stack,
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Thrown when connection to HCFS API fails
|
||||
*/
|
||||
export class HCFSConnectionError extends HCFSError {
|
||||
constructor(message: string = "Failed to connect to HCFS API", details?: Record<string, any>) {
|
||||
super(message, "CONNECTION_FAILED", details);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Thrown when authentication fails
|
||||
*/
|
||||
export class HCFSAuthenticationError extends HCFSError {
|
||||
constructor(message: string = "Authentication failed", details?: Record<string, any>) {
|
||||
super(message, "AUTH_FAILED", details, 401);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Thrown when user lacks permissions for an operation
|
||||
*/
|
||||
export class HCFSAuthorizationError extends HCFSError {
|
||||
constructor(message: string = "Insufficient permissions", details?: Record<string, any>) {
|
||||
super(message, "INSUFFICIENT_PERMISSIONS", details, 403);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Thrown when a requested resource is not found
|
||||
*/
|
||||
export class HCFSNotFoundError extends HCFSError {
|
||||
constructor(message: string = "Resource not found", details?: Record<string, any>) {
|
||||
super(message, "NOT_FOUND", details, 404);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Thrown when request validation fails
|
||||
*/
|
||||
export class HCFSValidationError extends HCFSError {
|
||||
public readonly validationErrors?: Array<{
|
||||
field?: string;
|
||||
message: string;
|
||||
code?: string;
|
||||
}>;
|
||||
|
||||
constructor(
|
||||
message: string = "Request validation failed",
|
||||
validationErrors?: Array<{ field?: string; message: string; code?: string }>,
|
||||
details?: Record<string, any>
|
||||
) {
|
||||
super(message, "VALIDATION_FAILED", details, 400);
|
||||
this.validationErrors = validationErrors;
|
||||
}
|
||||
|
||||
toJSON(): Record<string, any> {
|
||||
return {
|
||||
...super.toJSON(),
|
||||
validationErrors: this.validationErrors,
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Thrown when rate limit is exceeded
|
||||
*/
|
||||
export class HCFSRateLimitError extends HCFSError {
|
||||
public readonly retryAfter?: number;
|
||||
|
||||
constructor(
|
||||
message: string = "Rate limit exceeded",
|
||||
retryAfter?: number,
|
||||
details?: Record<string, any>
|
||||
) {
|
||||
super(
|
||||
retryAfter ? `${message}. Retry after ${retryAfter} seconds` : message,
|
||||
"RATE_LIMIT_EXCEEDED",
|
||||
details,
|
||||
429
|
||||
);
|
||||
this.retryAfter = retryAfter;
|
||||
}
|
||||
|
||||
toJSON(): Record<string, any> {
|
||||
return {
|
||||
...super.toJSON(),
|
||||
retryAfter: this.retryAfter,
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Thrown for server-side errors (5xx status codes)
|
||||
*/
|
||||
export class HCFSServerError extends HCFSError {
|
||||
constructor(
|
||||
message: string = "Internal server error",
|
||||
statusCode: number = 500,
|
||||
details?: Record<string, any>
|
||||
) {
|
||||
super(message, "SERVER_ERROR", details, statusCode);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Thrown when a request times out
|
||||
*/
|
||||
export class HCFSTimeoutError extends HCFSError {
|
||||
public readonly timeoutMs?: number;
|
||||
|
||||
constructor(
|
||||
message: string = "Request timed out",
|
||||
timeoutMs?: number,
|
||||
details?: Record<string, any>
|
||||
) {
|
||||
super(
|
||||
timeoutMs ? `${message} after ${timeoutMs}ms` : message,
|
||||
"TIMEOUT",
|
||||
details
|
||||
);
|
||||
this.timeoutMs = timeoutMs;
|
||||
}
|
||||
|
||||
toJSON(): Record<string, any> {
|
||||
return {
|
||||
...super.toJSON(),
|
||||
timeoutMs: this.timeoutMs,
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Thrown for cache-related errors
|
||||
*/
|
||||
export class HCFSCacheError extends HCFSError {
|
||||
constructor(message: string = "Cache operation failed", details?: Record<string, any>) {
|
||||
super(message, "CACHE_ERROR", details);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Thrown for batch operation errors
|
||||
*/
|
||||
export class HCFSBatchError extends HCFSError {
|
||||
public readonly failedItems?: Array<{ index: number; error: string; item?: any }>;
|
||||
|
||||
constructor(
|
||||
message: string = "Batch operation failed",
|
||||
failedItems?: Array<{ index: number; error: string; item?: any }>,
|
||||
details?: Record<string, any>
|
||||
) {
|
||||
super(message, "BATCH_ERROR", details);
|
||||
this.failedItems = failedItems;
|
||||
}
|
||||
|
||||
toJSON(): Record<string, any> {
|
||||
return {
|
||||
...super.toJSON(),
|
||||
failedItems: this.failedItems,
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Thrown for streaming/WebSocket errors
|
||||
*/
|
||||
export class HCFSStreamError extends HCFSError {
|
||||
constructor(message: string = "Stream operation failed", details?: Record<string, any>) {
|
||||
super(message, "STREAM_ERROR", details);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Thrown for search operation errors
|
||||
*/
|
||||
export class HCFSSearchError extends HCFSError {
|
||||
public readonly query?: string;
|
||||
public readonly searchType?: string;
|
||||
|
||||
constructor(
|
||||
message: string = "Search failed",
|
||||
query?: string,
|
||||
searchType?: string,
|
||||
details?: Record<string, any>
|
||||
) {
|
||||
super(
|
||||
`${message}${searchType ? ` (${searchType})` : ""}${query ? `: '${query}'` : ""}`,
|
||||
"SEARCH_ERROR",
|
||||
details
|
||||
);
|
||||
this.query = query;
|
||||
this.searchType = searchType;
|
||||
}
|
||||
|
||||
toJSON(): Record<string, any> {
|
||||
return {
|
||||
...super.toJSON(),
|
||||
query: this.query,
|
||||
searchType: this.searchType,
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Error handler utility function
|
||||
*/
|
||||
export function handleApiError(error: any): HCFSError {
|
||||
// If it's already an HCFS error, return as-is
|
||||
if (error instanceof HCFSError) {
|
||||
return error;
|
||||
}
|
||||
|
||||
// Handle axios errors
|
||||
if (error.response) {
|
||||
const { status, data } = error.response;
|
||||
const message = data?.error || data?.message || `HTTP ${status} error`;
|
||||
const details = data?.errorDetails || data?.details;
|
||||
|
||||
switch (status) {
|
||||
case 400:
|
||||
return new HCFSValidationError(message, details);
|
||||
case 401:
|
||||
return new HCFSAuthenticationError(message);
|
||||
case 403:
|
||||
return new HCFSAuthorizationError(message);
|
||||
case 404:
|
||||
return new HCFSNotFoundError(message);
|
||||
case 429:
|
||||
const retryAfter = error.response.headers['retry-after'];
|
||||
return new HCFSRateLimitError(message, retryAfter ? parseInt(retryAfter) : undefined);
|
||||
case 500:
|
||||
case 502:
|
||||
case 503:
|
||||
case 504:
|
||||
return new HCFSServerError(message, status);
|
||||
default:
|
||||
return new HCFSError(message, `HTTP_${status}`, undefined, status);
|
||||
}
|
||||
}
|
||||
|
||||
// Handle network errors
|
||||
if (error.code === 'ECONNABORTED' || error.code === 'ENOTFOUND' || error.code === 'ECONNREFUSED') {
|
||||
return new HCFSConnectionError(`Network error: ${error.message}`);
|
||||
}
|
||||
|
||||
// Handle timeout errors
|
||||
if (error.code === 'ECONNABORTED' && error.message.includes('timeout')) {
|
||||
return new HCFSTimeoutError(`Request timeout: ${error.message}`);
|
||||
}
|
||||
|
||||
// Generic error
|
||||
return new HCFSError(error.message || 'Unknown error occurred', 'UNKNOWN_ERROR');
|
||||
}
|
||||
564
sdks/javascript/src/utils.ts
Normal file
564
sdks/javascript/src/utils.ts
Normal file
@@ -0,0 +1,564 @@
|
||||
/**
|
||||
* HCFS SDK Utilities
|
||||
*
|
||||
* Common utility functions and helpers for the JavaScript/TypeScript SDK
|
||||
*/
|
||||
|
||||
import { HCFSTimeoutError, HCFSConnectionError, HCFSError } from './errors';
|
||||
|
||||
/**
|
||||
* Path validation utilities
|
||||
*/
|
||||
export class PathValidator {
|
||||
private static readonly VALID_PATH_REGEX = /^\/(?:[a-zA-Z0-9_.-]+\/)*[a-zA-Z0-9_.-]*$/;
|
||||
private static readonly RESERVED_NAMES = new Set(['.', '..', 'CON', 'PRN', 'AUX', 'NUL']);
|
||||
|
||||
/**
|
||||
* Check if a path is valid according to HCFS rules
|
||||
*/
|
||||
static isValid(path: string): boolean {
|
||||
if (!path || typeof path !== 'string') {
|
||||
return false;
|
||||
}
|
||||
|
||||
// Must start with /
|
||||
if (!path.startsWith('/')) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// Check basic format
|
||||
if (!this.VALID_PATH_REGEX.test(path)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// Check for reserved names
|
||||
const segments = path.split('/').filter(Boolean);
|
||||
for (const segment of segments) {
|
||||
if (this.RESERVED_NAMES.has(segment.toUpperCase())) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// Check segment length
|
||||
if (segment.length > 255) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
// Check total path length
|
||||
if (path.length > 4096) {
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Normalize a path by removing redundant separators and resolving relative components
|
||||
*/
|
||||
static normalize(path: string): string {
|
||||
if (!path || typeof path !== 'string') {
|
||||
return '/';
|
||||
}
|
||||
|
||||
// Ensure path starts with /
|
||||
if (!path.startsWith('/')) {
|
||||
path = '/' + path;
|
||||
}
|
||||
|
||||
// Split into segments and filter empty ones
|
||||
const segments = path.split('/').filter(Boolean);
|
||||
const normalized: string[] = [];
|
||||
|
||||
for (const segment of segments) {
|
||||
if (segment === '..') {
|
||||
// Go up one level
|
||||
normalized.pop();
|
||||
} else if (segment !== '.') {
|
||||
// Add segment (ignore current directory references)
|
||||
normalized.push(segment);
|
||||
}
|
||||
}
|
||||
|
||||
return '/' + normalized.join('/');
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the parent path of a given path
|
||||
*/
|
||||
static getParent(path: string): string {
|
||||
const normalized = this.normalize(path);
|
||||
if (normalized === '/') {
|
||||
return '/';
|
||||
}
|
||||
|
||||
const lastSlash = normalized.lastIndexOf('/');
|
||||
return lastSlash === 0 ? '/' : normalized.substring(0, lastSlash);
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the basename of a path
|
||||
*/
|
||||
static getBasename(path: string): string {
|
||||
const normalized = this.normalize(path);
|
||||
if (normalized === '/') {
|
||||
return '';
|
||||
}
|
||||
|
||||
const lastSlash = normalized.lastIndexOf('/');
|
||||
return normalized.substring(lastSlash + 1);
|
||||
}
|
||||
|
||||
/**
|
||||
* Join path segments
|
||||
*/
|
||||
static join(...segments: string[]): string {
|
||||
const joined = segments.join('/');
|
||||
return this.normalize(joined);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Retry utility with exponential backoff
|
||||
*/
|
||||
export interface RetryConfig {
|
||||
maxAttempts: number;
|
||||
baseDelay: number;
|
||||
maxDelay: number;
|
||||
exponentialBase: number;
|
||||
jitter: boolean;
|
||||
}
|
||||
|
||||
export const DEFAULT_RETRY_CONFIG: RetryConfig = {
|
||||
maxAttempts: 3,
|
||||
baseDelay: 1000,
|
||||
maxDelay: 30000,
|
||||
exponentialBase: 2,
|
||||
jitter: true,
|
||||
};
|
||||
|
||||
/**
|
||||
* Retry a function with exponential backoff
|
||||
*/
|
||||
export async function retry<T>(
|
||||
fn: () => Promise<T>,
|
||||
config: Partial<RetryConfig> = {},
|
||||
shouldRetry?: (error: any) => boolean
|
||||
): Promise<T> {
|
||||
const fullConfig: RetryConfig = { ...DEFAULT_RETRY_CONFIG, ...config };
|
||||
let lastError: any;
|
||||
|
||||
for (let attempt = 1; attempt <= fullConfig.maxAttempts; attempt++) {
|
||||
try {
|
||||
return await fn();
|
||||
} catch (error) {
|
||||
lastError = error;
|
||||
|
||||
// Check if we should retry this error
|
||||
if (shouldRetry && !shouldRetry(error)) {
|
||||
throw error;
|
||||
}
|
||||
|
||||
// Don't retry on the last attempt
|
||||
if (attempt === fullConfig.maxAttempts) {
|
||||
break;
|
||||
}
|
||||
|
||||
// Calculate delay with exponential backoff
|
||||
let delay = fullConfig.baseDelay * Math.pow(fullConfig.exponentialBase, attempt - 1);
|
||||
delay = Math.min(delay, fullConfig.maxDelay);
|
||||
|
||||
// Add jitter to prevent thundering herd
|
||||
if (fullConfig.jitter) {
|
||||
delay = delay * (0.5 + Math.random() * 0.5);
|
||||
}
|
||||
|
||||
await sleep(delay);
|
||||
}
|
||||
}
|
||||
|
||||
throw lastError;
|
||||
}
|
||||
|
||||
/**
|
||||
* Check if an error should trigger a retry
|
||||
*/
|
||||
export function isRetryableError(error: any): boolean {
|
||||
if (error instanceof HCFSError) {
|
||||
return error.isRetryable?.() ?? false;
|
||||
}
|
||||
|
||||
// Handle common HTTP errors
|
||||
if (error.response) {
|
||||
const status = error.response.status;
|
||||
return status >= 500 || status === 429;
|
||||
}
|
||||
|
||||
// Handle network errors
|
||||
if (error.code) {
|
||||
return ['ECONNRESET', 'ETIMEDOUT', 'ENOTFOUND', 'ECONNREFUSED'].includes(error.code);
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sleep for a specified number of milliseconds
|
||||
*/
|
||||
export function sleep(ms: number): Promise<void> {
|
||||
return new Promise(resolve => setTimeout(resolve, ms));
|
||||
}
|
||||
|
||||
/**
|
||||
* Timeout wrapper for promises
|
||||
*/
|
||||
export function withTimeout<T>(promise: Promise<T>, timeoutMs: number): Promise<T> {
|
||||
return new Promise((resolve, reject) => {
|
||||
const timeoutId = setTimeout(() => {
|
||||
reject(new HCFSTimeoutError(`Operation timed out after ${timeoutMs}ms`, timeoutMs));
|
||||
}, timeoutMs);
|
||||
|
||||
promise
|
||||
.then(resolve)
|
||||
.catch(reject)
|
||||
.finally(() => clearTimeout(timeoutId));
|
||||
});
|
||||
}
|
||||
|
||||
/**
|
||||
* Debounce function
|
||||
*/
|
||||
export function debounce<T extends (...args: any[]) => any>(
|
||||
func: T,
|
||||
wait: number
|
||||
): (...args: Parameters<T>) => void {
|
||||
let timeoutId: NodeJS.Timeout | undefined;
|
||||
|
||||
return (...args: Parameters<T>) => {
|
||||
if (timeoutId) {
|
||||
clearTimeout(timeoutId);
|
||||
}
|
||||
|
||||
timeoutId = setTimeout(() => {
|
||||
func(...args);
|
||||
}, wait);
|
||||
};
|
||||
}
|
||||
|
||||
/**
|
||||
* Throttle function
|
||||
*/
|
||||
export function throttle<T extends (...args: any[]) => any>(
|
||||
func: T,
|
||||
limit: number
|
||||
): (...args: Parameters<T>) => void {
|
||||
let inThrottle: boolean;
|
||||
|
||||
return (...args: Parameters<T>) => {
|
||||
if (!inThrottle) {
|
||||
func(...args);
|
||||
inThrottle = true;
|
||||
setTimeout(() => (inThrottle = false), limit);
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
/**
|
||||
* Deep clone an object
|
||||
*/
|
||||
export function deepClone<T>(obj: T): T {
|
||||
if (obj === null || typeof obj !== 'object') {
|
||||
return obj;
|
||||
}
|
||||
|
||||
if (obj instanceof Date) {
|
||||
return new Date(obj.getTime()) as any;
|
||||
}
|
||||
|
||||
if (obj instanceof Array) {
|
||||
return obj.map(item => deepClone(item)) as any;
|
||||
}
|
||||
|
||||
if (typeof obj === 'object') {
|
||||
const cloned = {} as any;
|
||||
for (const key in obj) {
|
||||
if (obj.hasOwnProperty(key)) {
|
||||
cloned[key] = deepClone(obj[key]);
|
||||
}
|
||||
}
|
||||
return cloned;
|
||||
}
|
||||
|
||||
return obj;
|
||||
}
|
||||
|
||||
/**
|
||||
* Check if two objects are deeply equal
|
||||
*/
|
||||
export function deepEqual(a: any, b: any): boolean {
|
||||
if (a === b) return true;
|
||||
|
||||
if (a == null || b == null) return false;
|
||||
|
||||
if (Array.isArray(a) && Array.isArray(b)) {
|
||||
if (a.length !== b.length) return false;
|
||||
for (let i = 0; i < a.length; i++) {
|
||||
if (!deepEqual(a[i], b[i])) return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
if (typeof a === 'object' && typeof b === 'object') {
|
||||
const keysA = Object.keys(a);
|
||||
const keysB = Object.keys(b);
|
||||
|
||||
if (keysA.length !== keysB.length) return false;
|
||||
|
||||
for (const key of keysA) {
|
||||
if (!keysB.includes(key)) return false;
|
||||
if (!deepEqual(a[key], b[key])) return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Generate a simple hash from a string
|
||||
*/
|
||||
export function simpleHash(str: string): number {
|
||||
let hash = 0;
|
||||
if (str.length === 0) return hash;
|
||||
|
||||
for (let i = 0; i < str.length; i++) {
|
||||
const char = str.charCodeAt(i);
|
||||
hash = ((hash << 5) - hash) + char;
|
||||
hash = hash & hash; // Convert to 32-bit integer
|
||||
}
|
||||
|
||||
return Math.abs(hash);
|
||||
}
|
||||
|
||||
/**
|
||||
* Generate a UUID v4
|
||||
*/
|
||||
export function generateUUID(): string {
|
||||
return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
|
||||
const r = Math.random() * 16 | 0;
|
||||
const v = c === 'x' ? r : (r & 0x3 | 0x8);
|
||||
return v.toString(16);
|
||||
});
|
||||
}
|
||||
|
||||
/**
|
||||
* Format bytes to human readable string
|
||||
*/
|
||||
export function formatBytes(bytes: number, decimals: number = 2): string {
|
||||
if (bytes === 0) return '0 Bytes';
|
||||
|
||||
const k = 1024;
|
||||
const dm = decimals < 0 ? 0 : decimals;
|
||||
const sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
|
||||
|
||||
const i = Math.floor(Math.log(bytes) / Math.log(k));
|
||||
|
||||
return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + ' ' + sizes[i];
|
||||
}
|
||||
|
||||
/**
|
||||
* Format duration in milliseconds to human readable string
|
||||
*/
|
||||
export function formatDuration(ms: number): string {
|
||||
if (ms < 1000) {
|
||||
return `${ms}ms`;
|
||||
}
|
||||
|
||||
const seconds = Math.floor(ms / 1000);
|
||||
if (seconds < 60) {
|
||||
return `${seconds}s`;
|
||||
}
|
||||
|
||||
const minutes = Math.floor(seconds / 60);
|
||||
if (minutes < 60) {
|
||||
return `${minutes}m ${seconds % 60}s`;
|
||||
}
|
||||
|
||||
const hours = Math.floor(minutes / 60);
|
||||
return `${hours}h ${minutes % 60}m`;
|
||||
}
|
||||
|
||||
/**
|
||||
* Validate email address
|
||||
*/
|
||||
export function isValidEmail(email: string): boolean {
|
||||
const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
|
||||
return emailRegex.test(email);
|
||||
}
|
||||
|
||||
/**
|
||||
* Sanitize HTML string
|
||||
*/
|
||||
export function sanitizeHtml(html: string): string {
|
||||
const div = document.createElement('div');
|
||||
div.textContent = html;
|
||||
return div.innerHTML;
|
||||
}
|
||||
|
||||
/**
|
||||
* Parse query string parameters
|
||||
*/
|
||||
export function parseQueryString(queryString: string): Record<string, string> {
|
||||
const params: Record<string, string> = {};
|
||||
|
||||
if (queryString.startsWith('?')) {
|
||||
queryString = queryString.substring(1);
|
||||
}
|
||||
|
||||
const pairs = queryString.split('&');
|
||||
for (const pair of pairs) {
|
||||
const [key, value] = pair.split('=');
|
||||
if (key) {
|
||||
params[decodeURIComponent(key)] = decodeURIComponent(value || '');
|
||||
}
|
||||
}
|
||||
|
||||
return params;
|
||||
}
|
||||
|
||||
/**
|
||||
* Build query string from parameters
|
||||
*/
|
||||
export function buildQueryString(params: Record<string, any>): string {
|
||||
const pairs: string[] = [];
|
||||
|
||||
for (const [key, value] of Object.entries(params)) {
|
||||
if (value !== undefined && value !== null) {
|
||||
pairs.push(`${encodeURIComponent(key)}=${encodeURIComponent(String(value))}`);
|
||||
}
|
||||
}
|
||||
|
||||
return pairs.length > 0 ? '?' + pairs.join('&') : '';
|
||||
}
|
||||
|
||||
/**
|
||||
* Rate limiter class
|
||||
*/
|
||||
export class RateLimiter {
|
||||
private tokens: number;
|
||||
private lastRefill: number;
|
||||
|
||||
constructor(
|
||||
private maxTokens: number,
|
||||
private refillRate: number // tokens per second
|
||||
) {
|
||||
this.tokens = maxTokens;
|
||||
this.lastRefill = Date.now();
|
||||
}
|
||||
|
||||
/**
|
||||
* Check if an operation can be performed
|
||||
*/
|
||||
canProceed(cost: number = 1): boolean {
|
||||
this.refill();
|
||||
|
||||
if (this.tokens >= cost) {
|
||||
this.tokens -= cost;
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Wait until tokens are available
|
||||
*/
|
||||
async waitForTokens(cost: number = 1): Promise<void> {
|
||||
while (!this.canProceed(cost)) {
|
||||
const waitTime = Math.ceil((cost - this.tokens) / this.refillRate * 1000);
|
||||
await sleep(Math.max(waitTime, 10));
|
||||
}
|
||||
}
|
||||
|
||||
private refill(): void {
|
||||
const now = Date.now();
|
||||
const elapsed = (now - this.lastRefill) / 1000;
|
||||
const tokensToAdd = elapsed * this.refillRate;
|
||||
|
||||
this.tokens = Math.min(this.maxTokens, this.tokens + tokensToAdd);
|
||||
this.lastRefill = now;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Event emitter class
|
||||
*/
|
||||
export class EventEmitter<T extends Record<string, any[]>> {
|
||||
private listeners: { [K in keyof T]?: Array<(...args: T[K]) => void> } = {};
|
||||
|
||||
/**
|
||||
* Add an event listener
|
||||
*/
|
||||
on<K extends keyof T>(event: K, listener: (...args: T[K]) => void): void {
|
||||
if (!this.listeners[event]) {
|
||||
this.listeners[event] = [];
|
||||
}
|
||||
this.listeners[event]!.push(listener);
|
||||
}
|
||||
|
||||
/**
|
||||
* Add a one-time event listener
|
||||
*/
|
||||
once<K extends keyof T>(event: K, listener: (...args: T[K]) => void): void {
|
||||
const onceListener = (...args: T[K]) => {
|
||||
this.off(event, onceListener);
|
||||
listener(...args);
|
||||
};
|
||||
this.on(event, onceListener);
|
||||
}
|
||||
|
||||
/**
|
||||
* Remove an event listener
|
||||
*/
|
||||
off<K extends keyof T>(event: K, listener: (...args: T[K]) => void): void {
|
||||
if (!this.listeners[event]) return;
|
||||
|
||||
const index = this.listeners[event]!.indexOf(listener);
|
||||
if (index > -1) {
|
||||
this.listeners[event]!.splice(index, 1);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Emit an event
|
||||
*/
|
||||
emit<K extends keyof T>(event: K, ...args: T[K]): void {
|
||||
if (!this.listeners[event]) return;
|
||||
|
||||
for (const listener of this.listeners[event]!) {
|
||||
try {
|
||||
listener(...args);
|
||||
} catch (error) {
|
||||
console.error('Error in event listener:', error);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Remove all listeners for an event
|
||||
*/
|
||||
removeAllListeners<K extends keyof T>(event?: K): void {
|
||||
if (event) {
|
||||
delete this.listeners[event];
|
||||
} else {
|
||||
this.listeners = {};
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the number of listeners for an event
|
||||
*/
|
||||
listenerCount<K extends keyof T>(event: K): number {
|
||||
return this.listeners[event]?.length || 0;
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user