const { expect } = require('expect')
const { FixedClusterPool, PoolEvents } = require('../../../lib')
-const { WorkerFunctions } = require('../../test-types')
-const TestUtils = require('../../test-utils')
+const { TaskFunctions } = require('../../test-types')
+const { waitPoolEvents, waitWorkerEvents } = require('../../test-utils')
+const { DEFAULT_TASK_NAME } = require('../../../lib/utils')
describe('Fixed cluster pool test suite', () => {
- const numberOfWorkers = 6
+ const numberOfWorkers = 8
+ const tasksConcurrency = 2
const pool = new FixedClusterPool(
numberOfWorkers,
'./tests/worker-files/cluster/testWorker.js',
{
- errorHandler: e => console.error(e)
+ errorHandler: (e) => console.error(e)
}
)
const queuePool = new FixedClusterPool(
{
enableTasksQueue: true,
tasksQueueOptions: {
- concurrency: 2
+ concurrency: tasksConcurrency
},
- errorHandler: e => console.error(e)
+ errorHandler: (e) => console.error(e)
}
)
const emptyPool = new FixedClusterPool(
numberOfWorkers,
'./tests/worker-files/cluster/emptyWorker.js',
- { exitHandler: () => console.log('empty pool worker exited') }
+ { exitHandler: () => console.info('empty pool worker exited') }
)
const echoPool = new FixedClusterPool(
numberOfWorkers,
numberOfWorkers,
'./tests/worker-files/cluster/errorWorker.js',
{
- errorHandler: e => console.error(e)
+ errorHandler: (e) => console.error(e)
}
)
const asyncErrorPool = new FixedClusterPool(
numberOfWorkers,
'./tests/worker-files/cluster/asyncErrorWorker.js',
{
- errorHandler: e => console.error(e)
+ errorHandler: (e) => console.error(e)
}
)
const asyncPool = new FixedClusterPool(
it('Verify that the function is executed in a worker cluster', async () => {
let result = await pool.execute({
- function: WorkerFunctions.fibonacci
+ function: TaskFunctions.fibonacci
})
- expect(result).toBe(121393)
+ expect(result).toBe(75025)
result = await pool.execute({
- function: WorkerFunctions.factorial
+ function: TaskFunctions.factorial
})
expect(result).toBe(9.33262154439441e157)
})
it('Verify that is possible to invoke the execute() method without input', async () => {
const result = await pool.execute()
- expect(result).toBe(false)
+ expect(result).toStrictEqual({ ok: 1 })
+ })
+
+ it("Verify that 'ready' event is emitted", async () => {
+ const pool = new FixedClusterPool(
+ numberOfWorkers,
+ './tests/worker-files/cluster/testWorker.js',
+ {
+ errorHandler: (e) => console.error(e)
+ }
+ )
+ let poolReady = 0
+ pool.emitter.on(PoolEvents.ready, () => ++poolReady)
+ await waitPoolEvents(pool, PoolEvents.ready, 1)
+ expect(poolReady).toBe(1)
+ await pool.destroy()
})
it("Verify that 'busy' event is emitted", async () => {
+ const promises = new Set()
let poolBusy = 0
pool.emitter.on(PoolEvents.busy, () => ++poolBusy)
for (let i = 0; i < numberOfWorkers * 2; i++) {
- pool.execute()
+ promises.add(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.
// So in total numberOfWorkers + 1 times for a loop submitting up to numberOfWorkers * 2 tasks to the fixed pool.
expect(poolBusy).toBe(numberOfWorkers + 1)
})
it('Verify that tasks queuing is working', async () => {
- const maxMultiplier = 2
const promises = new Set()
+ const maxMultiplier = 3 // Must be greater than tasksConcurrency
for (let i = 0; i < numberOfWorkers * maxMultiplier; i++) {
promises.add(queuePool.execute())
}
expect(promises.size).toBe(numberOfWorkers * maxMultiplier)
for (const workerNode of queuePool.workerNodes) {
- expect(workerNode.tasksUsage.running).toBeLessThanOrEqual(
+ expect(workerNode.usage.tasks.executing).toBeGreaterThanOrEqual(0)
+ expect(workerNode.usage.tasks.executing).toBeLessThanOrEqual(
queuePool.opts.tasksQueueOptions.concurrency
)
- expect(workerNode.tasksUsage.run).toBe(0)
- expect(workerNode.tasksQueue.size).toBeGreaterThan(0)
+ expect(workerNode.usage.tasks.executed).toBe(0)
+ expect(workerNode.usage.tasks.queued).toBe(
+ maxMultiplier - queuePool.opts.tasksQueueOptions.concurrency
+ )
+ expect(workerNode.usage.tasks.maxQueued).toBe(
+ maxMultiplier - queuePool.opts.tasksQueueOptions.concurrency
+ )
+ expect(workerNode.usage.tasks.stolen).toBe(0)
}
- expect(queuePool.numberOfRunningTasks).toBe(numberOfWorkers)
- expect(queuePool.numberOfQueuedTasks).toBe(
- numberOfWorkers * maxMultiplier - numberOfWorkers
+ expect(queuePool.info.executedTasks).toBe(0)
+ expect(queuePool.info.executingTasks).toBe(
+ numberOfWorkers * queuePool.opts.tasksQueueOptions.concurrency
+ )
+ expect(queuePool.info.queuedTasks).toBe(
+ numberOfWorkers *
+ (maxMultiplier - queuePool.opts.tasksQueueOptions.concurrency)
+ )
+ expect(queuePool.info.maxQueuedTasks).toBe(
+ numberOfWorkers *
+ (maxMultiplier - queuePool.opts.tasksQueueOptions.concurrency)
)
+ expect(queuePool.info.backPressure).toBe(false)
+ expect(queuePool.info.stolenTasks).toBe(0)
await Promise.all(promises)
for (const workerNode of queuePool.workerNodes) {
- expect(workerNode.tasksUsage.running).toBe(0)
- expect(workerNode.tasksUsage.run).toBeGreaterThan(0)
- expect(workerNode.tasksQueue.size).toBe(0)
+ expect(workerNode.usage.tasks.executing).toBeGreaterThanOrEqual(0)
+ expect(workerNode.usage.tasks.executing).toBeLessThanOrEqual(
+ numberOfWorkers * maxMultiplier
+ )
+ expect(workerNode.usage.tasks.executed).toBe(maxMultiplier)
+ expect(workerNode.usage.tasks.queued).toBe(0)
+ expect(workerNode.usage.tasks.maxQueued).toBe(
+ maxMultiplier - queuePool.opts.tasksQueueOptions.concurrency
+ )
+ expect(workerNode.usage.tasks.stolen).toBeGreaterThanOrEqual(0)
+ expect(workerNode.usage.tasks.stolen).toBeLessThanOrEqual(
+ numberOfWorkers * maxMultiplier
+ )
}
- promises.clear()
+ expect(queuePool.info.executedTasks).toBe(numberOfWorkers * maxMultiplier)
+ expect(queuePool.info.backPressure).toBe(false)
+ expect(queuePool.info.stolenTasks).toBeGreaterThanOrEqual(0)
+ expect(queuePool.info.stolenTasks).toBeLessThanOrEqual(
+ numberOfWorkers * maxMultiplier
+ )
})
it('Verify that is possible to have a worker that return undefined', async () => {
it('Verify that error handling is working properly:sync', async () => {
const data = { f: 10 }
+ let taskError
+ errorPool.emitter.on(PoolEvents.taskError, (e) => {
+ taskError = e
+ })
let inError
try {
await errorPool.execute(data)
expect(inError).toBeDefined()
expect(typeof inError === 'string').toBe(true)
expect(inError).toBe('Error Message from ClusterWorker')
+ expect(taskError).toStrictEqual({
+ name: DEFAULT_TASK_NAME,
+ message: 'Error Message from ClusterWorker',
+ data
+ })
expect(
errorPool.workerNodes.some(
- workerNode => workerNode.tasksUsage.error === 1
+ (workerNode) => workerNode.usage.tasks.failed === 1
)
).toBe(true)
})
it('Verify that error handling is working properly:async', async () => {
const data = { f: 10 }
+ let taskError
+ asyncErrorPool.emitter.on(PoolEvents.taskError, (e) => {
+ taskError = e
+ })
let inError
try {
await asyncErrorPool.execute(data)
expect(inError).toBeDefined()
expect(typeof inError === 'string').toBe(true)
expect(inError).toBe('Error Message from ClusterWorker:async')
+ expect(taskError).toStrictEqual({
+ name: DEFAULT_TASK_NAME,
+ message: 'Error Message from ClusterWorker:async',
+ data
+ })
expect(
asyncErrorPool.workerNodes.some(
- workerNode => workerNode.tasksUsage.error === 1
+ (workerNode) => workerNode.usage.tasks.failed === 1
)
).toBe(true)
})
})
it('Shutdown test', async () => {
- const exitPromise = TestUtils.waitExits(pool, numberOfWorkers)
+ const exitPromise = waitWorkerEvents(pool, 'exit', numberOfWorkers)
+ let poolDestroy = 0
+ pool.emitter.on(PoolEvents.destroy, () => ++poolDestroy)
await pool.destroy()
const numberOfExitEvents = await exitPromise
+ expect(pool.started).toBe(false)
+ expect(pool.workerNodes.length).toBe(0)
expect(numberOfExitEvents).toBe(numberOfWorkers)
+ expect(poolDestroy).toBe(1)
})
it('Verify that cluster pool options are checked', async () => {
const workerFilePath = './tests/worker-files/cluster/testWorker.js'
- let pool1 = new FixedClusterPool(numberOfWorkers, workerFilePath)
- expect(pool1.opts.env).toBeUndefined()
- expect(pool1.opts.settings).toBeUndefined()
- await pool1.destroy()
- pool1 = new FixedClusterPool(numberOfWorkers, workerFilePath, {
+ let pool = new FixedClusterPool(numberOfWorkers, workerFilePath)
+ expect(pool.opts.env).toBeUndefined()
+ expect(pool.opts.settings).toBeUndefined()
+ await pool.destroy()
+ pool = new FixedClusterPool(numberOfWorkers, workerFilePath, {
env: { TEST: 'test' },
settings: { args: ['--use', 'http'], silent: true }
})
- expect(pool1.opts.env).toStrictEqual({ TEST: 'test' })
- expect(pool1.opts.settings).toStrictEqual({
+ expect(pool.opts.env).toStrictEqual({ TEST: 'test' })
+ expect(pool.opts.settings).toStrictEqual({
args: ['--use', 'http'],
silent: true
})
- expect({ ...pool1.opts.settings, exec: workerFilePath }).toStrictEqual({
+ expect({ ...pool.opts.settings, exec: workerFilePath }).toStrictEqual({
args: ['--use', 'http'],
silent: true,
exec: workerFilePath
})
- await pool1.destroy()
+ await pool.destroy()
})
it('Should work even without opts in input', async () => {
- const pool1 = new FixedClusterPool(
+ const pool = new FixedClusterPool(
numberOfWorkers,
'./tests/worker-files/cluster/testWorker.js'
)
- const res = await pool1.execute()
- expect(res).toBe(false)
+ const res = await pool.execute()
+ expect(res).toStrictEqual({ ok: 1 })
// We need to clean up the resources after our test
- await pool1.destroy()
+ await pool.destroy()
})
it('Verify that a pool with zero worker fails', async () => {
expect(
() =>
new FixedClusterPool(0, './tests/worker-files/cluster/testWorker.js')
- ).toThrowError('Cannot instantiate a fixed pool with no worker')
+ ).toThrowError('Cannot instantiate a fixed pool with zero worker')
})
})
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