refactor: cleanup and type task error messages

[poolifier.git] / src / utility-types.ts

diff --git a/src/utility-types.ts b/src/utility-types.ts
index 3a454f3e6b8d0e1ee1c3a64897206f04c35c3ef8..3917ad2042b920f7509749605d86f073208c71cb 100644 (file)
--- a/src/utility-types.ts
+++ b/src/utility-types.ts
@@ -1,42 +1,90 @@
 import type { Worker as ClusterWorker } from 'node:cluster'
 import type { MessagePort } from 'node:worker_threads'
+import type { EventLoopUtilization } from 'node:perf_hooks'
 import type { KillBehavior } from './worker/worker-options'
 import type { IWorker, Task } from './pools/worker'
 
 /**
  * Make all properties in T non-readonly.
+ *
+ * @typeParam T - Type in which properties will be non-readonly.
  */
 export type Draft<T> = { -readonly [P in keyof T]?: T[P] }
 
+export interface TaskError<Data = unknown> {
+  /**
+   * Error message.
+   */
+  message: string
+  /**
+   * Data passed to the worker triggering the error.
+   */
+  data?: Data
+}
+
+/**
+ * Task performance.
+ */
+export interface TaskPerformance {
+  /**
+   * Task performance timestamp.
+   */
+  timestamp: number
+  /**
+   * Task runtime.
+   */
+  runTime?: number
+  /**
+   * Task wait time.
+   */
+  waitTime?: number
+  /**
+   * Task event loop utilization.
+   */
+  elu?: EventLoopUtilization
+}
+
+/**
+ * Performance statistics computation.
+ */
+export interface WorkerStatistics {
+  runTime: boolean
+  waitTime: boolean
+  elu: boolean
+}
+
 /**
  * Message object that is passed between main worker and worker.
  *
  * @typeParam Data - Type of data sent to the worker. This can only be serializable data.
  * @typeParam MainWorker - Type of main worker.
+ * @internal
  */
 export interface MessageValue<
   Data = unknown,
-  MainWorker extends ClusterWorker | MessagePort | unknown = unknown
+  ErrorData = unknown,
+  MainWorker extends ClusterWorker | MessagePort = ClusterWorker | MessagePort
 > extends Task<Data> {
   /**
    * Kill code.
    */
   readonly kill?: KillBehavior | 1
   /**
-   * Error.
+   * Task error.
    */
-  readonly error?: string
+  readonly taskError?: TaskError<ErrorData>
   /**
-   * Runtime.
+   * Task performance.
    */
-  readonly runTime?: number
+  readonly taskPerformance?: TaskPerformance
   /**
    * Reference to main worker.
-   *
-   * Only for internal use.
-   * @internal
    */
   readonly parent?: MainWorker
+  /**
+   * Whether to compute the given statistics or not.
+   */
+  readonly statistics?: WorkerStatistics
 }
 
 /**