X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=src%2Fpools%2Fselection-strategies%2Fselection-strategies-types.ts;h=b96bb029a0befe39ce438beb368e2c0dbecb87ab;hb=4f487526a63c873d168386250b40ad8103c5a4d8;hp=5b844cc572756930980c29991ea3af94ae9a6532;hpb=bdede008ae867784cd6dfa7468a930d7c026177b;p=poolifier.git

diff --git a/src/pools/selection-strategies/selection-strategies-types.ts b/src/pools/selection-strategies/selection-strategies-types.ts
index 5b844cc5..b96bb029 100644
--- a/src/pools/selection-strategies/selection-strategies-types.ts
+++ b/src/pools/selection-strategies/selection-strategies-types.ts
@@ -1,5 +1,3 @@
-import type { AbstractPoolWorker } from '../abstract-pool-worker'
-
 /**
  * Enumeration of worker choice strategies.
  */
@@ -9,9 +7,19 @@ export const WorkerChoiceStrategies = Object.freeze({
    */
   ROUND_ROBIN: 'ROUND_ROBIN',
   /**
-   * Less recently used worker selection strategy.
+   * Least used worker selection strategy.
+   */
+  LEAST_USED: 'LEAST_USED',
+  /**
+   * Least busy worker selection strategy.
+   */
+  LEAST_BUSY: 'LEAST_BUSY',
+  /**
+   * Least ELU worker selection strategy.
+   *
+   * @experimental
    */
-  LESS_RECENTLY_USED: 'LESS_RECENTLY_USED',
+  LEAST_ELU: 'LEAST_ELU',
   /**
    * Fair share worker selection strategy.
    */
@@ -19,7 +27,13 @@ export const WorkerChoiceStrategies = Object.freeze({
   /**
    * Weighted round robin worker selection strategy.
    */
-  WEIGHTED_ROUND_ROBIN: 'WEIGHTED_ROUND_ROBIN'
+  WEIGHTED_ROUND_ROBIN: 'WEIGHTED_ROUND_ROBIN',
+  /**
+   * Interleaved weighted round robin worker selection strategy.
+   *
+   * @experimental
+   */
+  INTERLEAVED_WEIGHTED_ROUND_ROBIN: 'INTERLEAVED_WEIGHTED_ROUND_ROBIN'
 } as const)
 
 /**
@@ -28,28 +42,103 @@ export const WorkerChoiceStrategies = Object.freeze({
 export type WorkerChoiceStrategy = keyof typeof WorkerChoiceStrategies
 
 /**
- * Tasks usage statistics requirements.
+ * Worker choice strategy options.
+ */
+export interface WorkerChoiceStrategyOptions {
+  /**
+   * Use tasks median runtime instead of average runtime.
+   *
+   * @defaultValue false
+   */
+  medRunTime?: boolean
+  /**
+   * Use tasks median wait time instead of average runtime.
+   *
+   * @defaultValue false
+   */
+  medWaitTime?: 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 type RequiredStatistics = {
+export interface TaskStatistics {
+  /**
+   * Require tasks runtime.
+   */
   runTime: boolean
+  /**
+   * Require tasks average runtime.
+   */
+  avgRunTime: boolean
+  /**
+   * Require tasks median runtime.
+   */
+  medRunTime: boolean
+  /**
+   * Require tasks wait time.
+   */
+  waitTime: boolean
+  /**
+   * Require tasks average wait time.
+   */
+  avgWaitTime: boolean
+  /**
+   * Require tasks median wait time.
+   */
+  medWaitTime: boolean
+  /**
+   * Event loop utilization.
+   */
+  elu: boolean
 }
 
 /**
  * Worker choice strategy interface.
- *
- * @template Worker Type of worker which manages the strategy.
  */
-export interface IWorkerChoiceStrategy<Worker extends AbstractPoolWorker> {
+export interface IWorkerChoiceStrategy {
+  /**
+   * Required tasks statistics.
+   */
+  readonly taskStatistics: TaskStatistics
+  /**
+   * Resets strategy internals.
+   *
+   * @returns `true` if the reset is successful, `false` otherwise.
+   */
+  reset: () => boolean
+  /**
+   * Updates the worker node key strategy internals.
+   *
+   * @returns `true` if the update is successful, `false` otherwise.
+   */
+  update: (workerNodeKey: number) => boolean
   /**
-   * Is the pool attached to the strategy dynamic?.
+   * Chooses a worker node in the pool and returns its key.
+   *
+   * @returns The worker node key.
    */
-  isDynamicPool: boolean
+  choose: () => number
   /**
-   * Required tasks usage statistics.
+   * Removes the worker node key from strategy internals.
+   *
+   * @param workerNodeKey - The worker node key.
+   * @returns `true` if the worker node key is removed, `false` otherwise.
    */
-  requiredStatistics: RequiredStatistics
+  remove: (workerNodeKey: number) => boolean
   /**
-   * Chooses a worker in the pool.
+   * Sets the worker choice strategy options.
+   *
+   * @param opts - The worker choice strategy options.
    */
-  choose(): Worker
+  setOptions: (opts: WorkerChoiceStrategyOptions) => void
 }