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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 | /** * V3 Hooks System - Hook Registry * * Central registry for managing hook definitions and lifecycle. * Provides registration, unregistration, and discovery of hooks. * * @module v3/shared/hooks/registry */ import { HookEvent, HookPriority, HookHandler, HookDefinition, HookStats, } from './types.js'; /** * Hook registry implementation */ export class HookRegistry { private hooks = new Map<HookEvent, HookDefinition[]>(); private hooksById = new Map<string, HookDefinition>(); private hookIdCounter = 0; // Statistics tracking private stats = { executions: 0, failures: 0, totalExecutionTime: 0, }; /** * Register a new hook * * @param event - Hook event type * @param handler - Hook handler function * @param priority - Hook priority (default: Normal) * @param options - Additional hook options * @returns Hook ID for later unregistration */ register( event: HookEvent, handler: HookHandler, priority: HookPriority = HookPriority.Normal, options: { name?: string; timeout?: number; enabled?: boolean; metadata?: Record<string, unknown>; } = {} ): string { // Generate unique hook ID const id = `hook_${++this.hookIdCounter}_${Date.now()}`; // Create hook definition const definition: HookDefinition = { id, event, handler, priority, name: options.name, enabled: options.enabled ?? true, timeout: options.timeout, metadata: options.metadata, }; // Add to event-specific list let eventHooks = this.hooks.get(event); if (!eventHooks) { eventHooks = []; this.hooks.set(event, eventHooks); } eventHooks.push(definition); // Sort by priority (highest first) eventHooks.sort((a, b) => b.priority - a.priority); // Add to ID map this.hooksById.set(id, definition); return id; } /** * Unregister a hook by ID * * @param hookId - Hook ID to unregister * @returns Whether hook was found and removed */ unregister(hookId: string): boolean { const definition = this.hooksById.get(hookId); if (!definition) { return false; } // Remove from event-specific list const eventHooks = this.hooks.get(definition.event); if (eventHooks) { const index = eventHooks.findIndex(h => h.id === hookId); if (index !== -1) { eventHooks.splice(index, 1); } // Clean up empty arrays if (eventHooks.length === 0) { this.hooks.delete(definition.event); } } // Remove from ID map this.hooksById.delete(hookId); return true; } /** * Unregister all hooks for an event * * @param event - Event type to clear hooks for * @returns Number of hooks removed */ unregisterAll(event?: HookEvent): number { if (event) { const eventHooks = this.hooks.get(event) || []; const count = eventHooks.length; // Remove from ID map for (const hook of eventHooks) { this.hooksById.delete(hook.id); } // Clear event hooks this.hooks.delete(event); return count; } else { // Clear all hooks const count = this.hooksById.size; this.hooks.clear(); this.hooksById.clear(); this.hookIdCounter = 0; return count; } } /** * Get all hooks for a specific event (sorted by priority) * * @param event - Event type * @param includeDisabled - Whether to include disabled hooks * @returns Array of hook definitions */ getHandlers(event: HookEvent, includeDisabled = false): HookDefinition[] { const eventHooks = this.hooks.get(event) || []; if (includeDisabled) { return [...eventHooks]; } return eventHooks.filter(h => h.enabled); } /** * Get a hook by ID * * @param hookId - Hook ID * @returns Hook definition or undefined */ getHook(hookId: string): HookDefinition | undefined { return this.hooksById.get(hookId); } /** * Enable a hook * * @param hookId - Hook ID * @returns Whether hook was found and enabled */ enable(hookId: string): boolean { const hook = this.hooksById.get(hookId); if (hook) { hook.enabled = true; return true; } return false; } /** * Disable a hook * * @param hookId - Hook ID * @returns Whether hook was found and disabled */ disable(hookId: string): boolean { const hook = this.hooksById.get(hookId); if (hook) { hook.enabled = false; return true; } return false; } /** * List all registered hooks * * @param filter - Optional filter options * @returns Array of hook definitions */ listHooks(filter?: { event?: HookEvent; enabled?: boolean; minPriority?: HookPriority; }): HookDefinition[] { let hooks: HookDefinition[]; if (filter?.event) { hooks = this.hooks.get(filter.event) || []; } else { hooks = Array.from(this.hooksById.values()); } // Apply filters if (filter?.enabled !== undefined) { hooks = hooks.filter(h => h.enabled === filter.enabled); } if (filter?.minPriority !== undefined) { const minPriority = filter.minPriority; hooks = hooks.filter(h => h.priority >= minPriority); } return hooks; } /** * Get all event types with registered hooks * * @returns Array of event types */ getEventTypes(): HookEvent[] { return Array.from(this.hooks.keys()); } /** * Get count of hooks for an event * * @param event - Event type (optional) * @returns Hook count */ count(event?: HookEvent): number { if (event) { return this.hooks.get(event)?.length || 0; } return this.hooksById.size; } /** * Record hook execution statistics * * @param success - Whether execution succeeded * @param executionTime - Execution time in ms */ recordExecution(success: boolean, executionTime: number): void { this.stats.executions++; this.stats.totalExecutionTime += executionTime; if (!success) { this.stats.failures++; } } /** * Get hook statistics * * @returns Hook statistics */ getStats(): HookStats { const byEvent: Record<HookEvent, number> = {} as any; for (const [event, hooks] of this.hooks) { byEvent[event] = hooks.filter(h => h.enabled).length; } return { totalHooks: this.hooksById.size, byEvent, totalExecutions: this.stats.executions, totalFailures: this.stats.failures, avgExecutionTime: this.stats.executions > 0 ? this.stats.totalExecutionTime / this.stats.executions : 0, totalExecutionTime: this.stats.totalExecutionTime, }; } /** * Reset statistics */ resetStats(): void { this.stats = { executions: 0, failures: 0, totalExecutionTime: 0, }; } /** * Check if a hook exists * * @param hookId - Hook ID * @returns Whether hook exists */ has(hookId: string): boolean { return this.hooksById.has(hookId); } /** * Clear all hooks and reset state */ clear(): void { this.hooks.clear(); this.hooksById.clear(); this.hookIdCounter = 0; this.resetStats(); } } /** * Create a new hook registry */ export function createHookRegistry(): HookRegistry { return new HookRegistry(); } |