X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=src%2Fpools%2Fpool.ts;h=06989941fd7030c52286cd0c18a3c909d654c2db;hb=34d8846f1e7e54273f3944f687336c5624a18f39;hp=b5eec21c714798099076be2dab22f64aec4722ac;hpb=dbd73092cca6cabb2b41e18b944656fc43f8757b;p=poolifier.git

diff --git a/src/pools/pool.ts b/src/pools/pool.ts
index b5eec21c..06989941 100644
--- a/src/pools/pool.ts
+++ b/src/pools/pool.ts
@@ -1,5 +1,6 @@
-import { EventEmitter } from 'node:events'
-import { type TransferListItem } from 'node:worker_threads'
+import type { TransferListItem } from 'node:worker_threads'
+import type { EventEmitter, EventEmitterAsyncResource } from 'node:events'
+import type { TaskFunction } from '../worker/task-functions'
 import type {
   ErrorHandler,
   ExitHandler,
@@ -33,11 +34,6 @@ export const PoolTypes = Object.freeze({
  */
 export type PoolType = keyof typeof PoolTypes
 
-/**
- * Pool events emitter.
- */
-export class PoolEmitter extends EventEmitter {}
-
 /**
  * Enumeration of pool events.
  */
@@ -114,13 +110,13 @@ export interface TasksQueueOptions {
    */
   readonly concurrency?: number
   /**
-   * Whether to enable task stealing.
+   * Whether to enable task stealing on empty queue.
    *
    * @defaultValue true
    */
   readonly taskStealing?: boolean
   /**
-   * Whether to enable tasks stealing on back pressure.
+   * Whether to enable tasks stealing under back pressure.
    *
    * @defaultValue true
    */
@@ -135,24 +131,32 @@ export interface TasksQueueOptions {
 export interface PoolOptions<Worker extends IWorker> {
   /**
    * A function that will listen for online event on each worker.
+   *
+   * @defaultValue `() => {}`
    */
   onlineHandler?: OnlineHandler<Worker>
   /**
    * A function that will listen for message event on each worker.
+   *
+   * @defaultValue `() => {}`
    */
   messageHandler?: MessageHandler<Worker>
   /**
    * A function that will listen for error event on each worker.
+   *
+   * @defaultValue `() => {}`
    */
   errorHandler?: ErrorHandler<Worker>
   /**
    * A function that will listen for exit event on each worker.
+   *
+   * @defaultValue `() => {}`
    */
   exitHandler?: ExitHandler<Worker>
   /**
    * Whether to start the minimum number of workers at pool initialization.
    *
-   * @defaultValue false
+   * @defaultValue true
    */
   startWorkers?: boolean
   /**
@@ -170,7 +174,7 @@ export interface PoolOptions<Worker extends IWorker> {
    */
   restartWorkerOnError?: boolean
   /**
-   * Pool events emission.
+   * Pool events integrated with async resource emission.
    *
    * @defaultValue true
    */
@@ -218,7 +222,8 @@ export interface IPool<
    */
   readonly hasWorkerNodeBackPressure: (workerNodeKey: number) => boolean
   /**
-   * Emitter on which events can be listened to.
+   * Event emitter integrated with async resource on which events can be listened to.
+   * The async tracking tooling identifier is `poolifier:<PoolType>-<WorkerType>-pool`.
    *
    * Events that can currently be listened to:
    *
@@ -230,7 +235,7 @@ export interface IPool<
    * - `'taskError'`: Emitted when an error occurs while executing a task.
    * - `'backPressure'`: Emitted when all worker nodes have back pressure (i.e. their tasks queue is full: queue size \>= maximum queue size).
    */
-  readonly emitter?: PoolEmitter
+  readonly emitter?: EventEmitter | EventEmitterAsyncResource
   /**
    * Executes the specified function in the worker constructor with the task data input parameter.
    *
@@ -252,12 +257,47 @@ export interface IPool<
    * Terminates all workers in this pool.
    */
   readonly destroy: () => Promise<void>
+  /**
+   * Whether the specified task function exists in this pool.
+   *
+   * @param name - The name of the task function.
+   * @returns `true` if the task function exists, `false` otherwise.
+   */
+  readonly hasTaskFunction: (name: string) => boolean
+  /**
+   * Adds a task function to this pool.
+   * If a task function with the same name already exists, it will be overwritten.
+   *
+   * @param name - The name of the task function.
+   * @param fn - The task function.
+   * @returns `true` if the task function was added, `false` otherwise.
+   * @throws {@link https://nodejs.org/api/errors.html#class-typeerror} If the `name` parameter is not a string or an empty string.
+   * @throws {@link https://nodejs.org/api/errors.html#class-typeerror} If the `fn` parameter is not a function.
+   */
+  readonly addTaskFunction: (
+    name: string,
+    fn: TaskFunction<Data, Response>
+  ) => Promise<boolean>
+  /**
+   * Removes a task function from this pool.
+   *
+   * @param name - The name of the task function.
+   * @returns `true` if the task function was removed, `false` otherwise.
+   */
+  readonly removeTaskFunction: (name: string) => Promise<boolean>
   /**
    * Lists the names of task function available in this pool.
    *
    * @returns The names of task function available in this pool.
    */
-  readonly listTaskFunctions: () => string[]
+  readonly listTaskFunctionNames: () => string[]
+  /**
+   * Sets the default task function in this pool.
+   *
+   * @param name - The name of the task function.
+   * @returns `true` if the default task function was set, `false` otherwise.
+   */
+  readonly setDefaultTaskFunction: (name: string) => Promise<boolean>
   /**
    * Sets the worker choice strategy in this pool.
    *