Abstract Type of worker which manages this pool.
Type of data sent to the worker. This can only be structured-cloneable data.
Type of execution response. This can only be structured-cloneable data.
Constructs a new poolifier pool.
Number of workers that this pool should manage.
Path to the worker file.
Options for the pool.
Optional emitterEvent emitter integrated with async resource on which events can be listened to.
The async tracking tooling identifier is poolifier:<PoolType>-<WorkerType>-pool.
Events that can currently be listened to:
'ready': Emitted when the number of workers created in the pool has reached the minimum size expected and are ready.'busy': Emitted when the number of workers created in the pool has reached the maximum size expected and are executing concurrently their tasks quota.'full': Emitted when the pool is dynamic and the number of workers created has reached the maximum size expected.'destroy': Emitted when the pool is destroyed.'error': Emitted when an uncaught error occurs.'taskError': Emitted when an error occurs while executing a task.'backPressure': Emitted when all worker nodes have back pressure (i.e. their tasks queue is full: queue size >= maximum queue size).Protected Readonly filePath to the worker file.
Protected Optional Readonly maxDynamic pool maximum size property placeholder.
Protected Readonly numberNumber of workers that this pool should manage.
Protected Readonly optsOptions for the pool.
Protected promiseThe task execution response promise map:
key: The message id of each submitted task.value: An object that contains the worker, the execution response promise resolve and reject callbacks.When we receive a message from the worker, we get a map entry with the promise resolve/reject bound to the message id.
Private Readonly startThe start timestamp of the pool.
Private startedWhether the pool is started or not.
Private startingWhether the pool is starting or not.
Private Readonly taskThe task functions added at runtime map:
key: The task function name.value: The task function itself.Protected workerWorker choice strategy context referencing a worker choice algorithm implementation.
Readonly Internal workerPool worker nodes.
Protected Abstract busyWhether the pool is busy or not.
The pool busyness boolean status.
Protected fullWhether the pool is full or not.
The pool filling boolean status.
Protected maxThe pool maximum size.
Protected minThe pool minimum size.
Private readyThe pool readiness boolean status.
Protected Abstract typeThe pool type.
If it is 'dynamic', it provides the max property.
Private utilizationThe approximate pool utilization.
The pool utilization.
Protected Abstract workerThe worker type.
Adds a task function to this pool. If a task function with the same name already exists, it will be overwritten.
The name of the task function.
The task function.
true if the task function was added, false otherwise.
https://nodejs.org/api/errors.html#class-typeerror If the name parameter is not a string or an empty string.
https://nodejs.org/api/errors.html#class-typeerror If the fn parameter is not a function.
Private addAdds the given worker in the pool worker nodes.
The worker.
The added worker node key.
https://nodejs.org/api/errors.html#class-error If the added worker node is not found.
Protected afterHook executed after the worker task execution. Can be overridden.
The worker node key.
The received message.
Protected afterProtected beforeHook executed before the worker task execution. Can be overridden.
The worker node key.
The task to execute.
Private buildPrivate checkPrivate checkPrivate checkPrivate checkChecks if the worker id sent in the received message from a worker is valid.
The received message.
https://nodejs.org/api/errors.html#class-error If the worker id is invalid.
Private checkPrivate checkPrivate checkPrivate chooseProtected createProtected createProtected Abstract createPrivate deletePrivate dequeueProtected Abstract deregisterDeregisters a listener callback on the worker given its worker node key.
The worker node key.
The message listener callback.
Protected Abstract destroyEnables/disables the worker node tasks queue in this pool.
Whether to enable or disable the worker node tasks queue.
Optional tasksQueueOptions: TasksQueueOptionsThe worker node tasks queue options.
Private enqueueExecutes the specified function in the worker constructor with the task data input parameter.
Optional data: DataThe optional task input data for the specified task function. This can only be structured-cloneable data.
Optional name: stringThe optional name of the task function to execute. If not specified, the default task function will be executed.
Optional transferList: TransferListItem[]An optional array of transferable objects to transfer ownership of. Ownership of the transferred objects is given to the pool's worker_threads worker and they should not be used in the main thread afterwards.
Promise that will be fulfilled when the task is completed.
Private executeExecutes the given task on the worker given its worker node key.
The worker node key.
The task to execute.
Protected flagProtected flushPrivate flushProtected getGets the worker information given its worker node key.
The worker node key.
The worker information.
Private getPrivate getPrivate Readonly handlePrivate Readonly handlePrivate handlePrivate handlePrivate hasPrivate initializeProtected internalProtected Abstract isPrivate redistributeProtected Abstract registerRegisters once a listener callback on the worker given its worker node key.
The worker node key.
The message listener callback.
Protected Abstract registerRegisters a listener callback on the worker given its worker node key.
The worker node key.
The message listener callback.
Private removeProtected sendProtected Abstract sendPrivate sendPrivate sendPrivate sendProtected Abstract sendSends a message to worker given its worker node key.
The worker node key.
The message.
Optional transferList: TransferListItem[]The optional array of transferable objects.
Private setSets the worker node tasks queue options in this pool.
The worker node tasks queue options.
Private setPrivate setSets the worker choice strategy in this pool.
The worker choice strategy.
Optional workerChoiceStrategyOptions: WorkerChoiceStrategyOptionsThe worker choice strategy options.
Sets the worker choice strategy options in this pool.
The worker choice strategy options.
Protected setupPrivate shallPrivate shallPrivate shallPrivate tasksPrivate unsetPrivate unsetPrivate updatePrivate updatePrivate updatePrivate updatePrivate updateProtected workerThis method is the message listener registered on each worker.
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Base class that implements some shared logic for all poolifier pools.