FixedThreadPool,
WorkerChoiceStrategies
} = require('../../../lib/index')
-const numberOfWorkers = 1
-const workerNotFoundInTasksUsageMapError = new Error(
- 'Worker could not be found in worker tasks usage map'
-)
-class StubPoolWithWorkerTasksUsageMapClear extends FixedThreadPool {
- removeAllWorker () {
- this.workersTasksUsage.clear()
+
+describe('Abstract pool test suite', () => {
+ const numberOfWorkers = 1
+ const workerNotFoundInTasksUsageMapError = new Error(
+ 'Worker could not be found in worker tasks usage map'
+ )
+ class StubPoolWithWorkerTasksUsageMapClear extends FixedThreadPool {
+ removeAllWorker () {
+ this.workersTasksUsage.clear()
+ }
}
-}
-class StubPoolWithIsMainMethod extends FixedThreadPool {
- isMain () {
- return false
+ class StubPoolWithIsMainMethod extends FixedThreadPool {
+ isMain () {
+ return false
+ }
}
-}
-describe('Abstract pool test suite', () => {
it('Simulate pool creation from a non main thread/process', () => {
expect(
() =>
pool.destroy()
})
- it('Simulate worker not found during updateWorkerTasksRunTime', () => {
+ it('Simulate worker not found during updateWorkerTasksRunTime with strategy not requiring it', () => {
const pool = new StubPoolWithWorkerTasksUsageMapClear(
numberOfWorkers,
'./tests/worker-files/cluster/testWorker.js',
)
// Simulate worker not found.
pool.removeAllWorker()
+ expect(() => pool.updateWorkerTasksRunTime()).not.toThrowError()
+ pool.destroy()
+ })
+
+ it('Simulate worker not found during updateWorkerTasksRunTime with strategy requiring it', () => {
+ const pool = new StubPoolWithWorkerTasksUsageMapClear(
+ numberOfWorkers,
+ './tests/worker-files/cluster/testWorker.js',
+ {
+ workerChoiceStrategy: WorkerChoiceStrategies.FAIR_SHARE,
+ errorHandler: e => console.error(e)
+ }
+ )
+ // Simulate worker not found.
+ pool.removeAllWorker()
expect(() => pool.updateWorkerTasksRunTime()).toThrowError(
workerNotFoundInTasksUsageMapError
)
)
const promises = []
for (let i = 0; i < numberOfWorkers * 2; i++) {
- promises.push(pool.execute({ test: 'test' }))
+ promises.push(pool.execute())
}
for (const tasksUsage of pool.workersTasksUsage.values()) {
expect(tasksUsage).toBeDefined()
pool.destroy()
})
+ it('Verify that worker pool tasks usage are reset at worker choice strategy change', async () => {
+ const pool = new FixedThreadPool(
+ numberOfWorkers,
+ './tests/worker-files/thread/testWorker.js'
+ )
+ const promises = []
+ for (let i = 0; i < numberOfWorkers * 2; i++) {
+ promises.push(pool.execute())
+ }
+ await Promise.all(promises)
+ for (const tasksUsage of pool.workersTasksUsage.values()) {
+ expect(tasksUsage).toBeDefined()
+ expect(tasksUsage.run).toBe(numberOfWorkers * 2)
+ expect(tasksUsage.running).toBe(0)
+ expect(tasksUsage.runTime).toBeGreaterThanOrEqual(0)
+ expect(tasksUsage.avgRunTime).toBeGreaterThanOrEqual(0)
+ }
+ pool.setWorkerChoiceStrategy(WorkerChoiceStrategies.FAIR_SHARE)
+ for (const tasksUsage of pool.workersTasksUsage.values()) {
+ expect(tasksUsage).toBeDefined()
+ expect(tasksUsage.run).toBe(0)
+ expect(tasksUsage.running).toBe(0)
+ expect(tasksUsage.runTime).toBe(0)
+ expect(tasksUsage.avgRunTime).toBe(0)
+ }
+ pool.destroy()
+ })
+
it("Verify that pool event emitter 'busy' event can register a callback", async () => {
const pool = new FixedThreadPool(
numberOfWorkers,
let poolBusy = 0
pool.emitter.on('busy', () => poolBusy++)
for (let i = 0; i < numberOfWorkers * 2; i++) {
- promises.push(pool.execute({ test: 'test' }))
+ promises.push(pool.execute())
}
await Promise.all(promises)
// The `busy` event is triggered when the number of submitted tasks at once reach the number of fixed pool workers.