X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=src%2Fpools%2Fpool.ts;h=bcf7d9385035b938ac3c0ed9bdb24dda6382e0a1;hb=6a3ecc500583fc68d5bbce89f8448ccd022ab900;hp=546f67b79ad8f48cf1019cdc67d132c41975c0b4;hpb=d35e571704515a8b729d3455e4784054f07c368f;p=poolifier.git

diff --git a/src/pools/pool.ts b/src/pools/pool.ts
index 546f67b7..bcf7d938 100644
--- a/src/pools/pool.ts
+++ b/src/pools/pool.ts
@@ -1,7 +1,12 @@
-import type { TransferListItem, WorkerOptions } from 'node:worker_threads'
-import type { EventEmitterAsyncResource } from 'node:events'
 import type { ClusterSettings } from 'node:cluster'
+import type { EventEmitterAsyncResource } from 'node:events'
+import type { TransferListItem, WorkerOptions } from 'node:worker_threads'
+
 import type { TaskFunction } from '../worker/task-functions.js'
+import type {
+  WorkerChoiceStrategy,
+  WorkerChoiceStrategyOptions
+} from './selection-strategies/selection-strategies-types.js'
 import type {
   ErrorHandler,
   ExitHandler,
@@ -11,15 +16,14 @@ import type {
   OnlineHandler,
   WorkerType
 } from './worker.js'
-import type {
-  WorkerChoiceStrategy,
-  WorkerChoiceStrategyOptions
-} from './selection-strategies/selection-strategies-types.js'
 
 /**
  * Enumeration of pool types.
  */
-export const PoolTypes = Object.freeze({
+export const PoolTypes: Readonly<{
+  fixed: 'fixed'
+  dynamic: 'dynamic'
+}> = Object.freeze({
   /**
    * Fixed pool type.
    */
@@ -38,10 +42,20 @@ export type PoolType = keyof typeof PoolTypes
 /**
  * Enumeration of pool events.
  */
-export const PoolEvents = Object.freeze({
+export const PoolEvents: Readonly<{
+  ready: 'ready'
+  busy: 'busy'
+  full: 'full'
+  empty: 'empty'
+  destroy: 'destroy'
+  error: 'error'
+  taskError: 'taskError'
+  backPressure: 'backPressure'
+}> = Object.freeze({
   ready: 'ready',
   busy: 'busy',
   full: 'full',
+  empty: 'empty',
   destroy: 'destroy',
   error: 'error',
   taskError: 'taskError',
@@ -63,6 +77,7 @@ export interface PoolInfo {
   readonly started: boolean
   readonly ready: boolean
   readonly strategy: WorkerChoiceStrategy
+  readonly strategyRetries: number
   readonly minSize: number
   readonly maxSize: number
   /** Pool utilization. */
@@ -241,22 +256,15 @@ export interface IPool<
    */
   readonly workerNodes: Array<IWorkerNode<Worker, Data>>
   /**
-   * Whether the worker node has back pressure (i.e. its tasks queue is full).
-   *
-   * @param workerNodeKey - The worker node key.
-   * @returns `true` if the worker node has back pressure, `false` otherwise.
-   * @internal
-   */
-  readonly hasWorkerNodeBackPressure: (workerNodeKey: number) => boolean
-  /**
-   * Event emitter integrated with async resource on which events can be listened to.
+   * Pool event emitter integrated with async resource.
    * The async tracking tooling identifier is `poolifier:<PoolType>-<WorkerType>-pool`.
    *
    * Events that can currently be listened to:
    *
-   * - `'ready'`: Emitted when the number of workers created in the pool has reached the minimum size expected and are ready.
+   * - `'ready'`: Emitted when the number of workers created in the pool has reached the minimum size expected and are ready. If the pool is dynamic with a minimum number of workers is set to zero, this event is emitted when at least one dynamic worker is ready.
    * - `'busy'`: Emitted when the number of workers created in the pool has reached the maximum size expected and are executing concurrently their tasks quota.
    * - `'full'`: Emitted when the pool is dynamic and the number of workers created has reached the maximum size expected.
+   * - `'empty'`: Emitted when the pool is dynamic with a minimum number of workers set to zero and the number of workers has reached the minimum size expected.
    * - `'destroy'`: Emitted when the pool is destroyed.
    * - `'error'`: Emitted when an uncaught error occurs.
    * - `'taskError'`: Emitted when an error occurs while executing a task.
@@ -274,7 +282,7 @@ export interface IPool<
   readonly execute: (
     data?: Data,
     name?: string,
-    transferList?: TransferListItem[]
+    transferList?: readonly TransferListItem[]
   ) => Promise<Response>
   /**
    * Starts the minimum number of workers in this pool.