feat: add custom worker weights to worker choice strategies options

[poolifier.git] / src / pools / selection-strategies / selection-strategies-types.ts

diff --git a/src/pools/selection-strategies/selection-strategies-types.ts b/src/pools/selection-strategies/selection-strategies-types.ts
index fb864c5b08ffc31a3cb1336225d31f285b0ce240..0e549cec338b685d36e80ab1ff3d147ef6a3f83f 100644 (file)
--- a/src/pools/selection-strategies/selection-strategies-types.ts
+++ b/src/pools/selection-strategies/selection-strategies-types.ts
@@ -30,11 +30,42 @@ export const WorkerChoiceStrategies = Object.freeze({
 export type WorkerChoiceStrategy = keyof typeof WorkerChoiceStrategies
 
 /**
- * Pool tasks usage statistics requirements.
+ * Worker choice strategy options.
+ */
+export interface WorkerChoiceStrategyOptions {
+  /**
+   * Use tasks median run time instead of average run time.
+   *
+   * @defaultValue false
+   */
+  medRunTime?: boolean
+  /**
+   * Worker weights to use for weighted round robin worker selection strategy.
+   * Weight is the tasks maximum average or median runtime in milliseconds.
+   *
+   * @defaultValue Computed worker weights automatically given the CPU performance.
+   */
+  weights?: Record<number, number>
+}
+
+/**
+ * Pool worker tasks usage statistics requirements.
+ *
+ * @internal
  */
 export interface RequiredStatistics {
+  /**
+   * Require tasks run time.
+   */
   runTime: boolean
+  /**
+   * Require tasks average run time.
+   */
   avgRunTime: boolean
+  /**
+   * Require tasks median run time.
+   */
+  medRunTime: boolean
 }
 
 /**
@@ -42,11 +73,7 @@ export interface RequiredStatistics {
  */
 export interface IWorkerChoiceStrategy {
   /**
-   * Is the pool attached to the strategy dynamic?.
-   */
-  readonly isDynamicPool: boolean
-  /**
-   * Required pool tasks usage statistics.
+   * Required tasks usage statistics.
    */
   readonly requiredStatistics: RequiredStatistics
   /**
@@ -54,13 +81,19 @@ export interface IWorkerChoiceStrategy {
    */
   reset: () => boolean
   /**
-   * Chooses a worker in the pool and returns its key.
+   * Chooses a worker node in the pool and returns its key.
    */
   choose: () => number
   /**
-   * Removes a worker reference from strategy internals.
+   * Removes a worker node key from strategy internals.
+   *
+   * @param workerNodeKey - The worker node key.
+   */
+  remove: (workerNodeKey: number) => boolean
+  /**
+   * Sets the worker choice strategy options.
    *
-   * @param workerKey - The worker key.
+   * @param opts - The worker choice strategy options.
    */
-  remove: (workerKey: number) => boolean
+  setOptions: (opts: WorkerChoiceStrategyOptions) => void
 }