Protected createProtected createCreates a new, completely set up worker node.
+Protected createProtected createCreates a new worker.
+Protected createProtected deregisterDeregisters a listener callback on the worker given its worker node key.
+Protected deregisterDeregisters a listener callback on the worker given its worker node key.
The worker node key.
The message listener callback.
-Protected destroyTerminates the worker node given its worker node key.
+Protected 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.
-Executes 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 chosen 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.
-Protected flagProtected flushProtected getGets the worker information given its worker node key.
+Protected flagProtected flushProtected getGets the worker information given its worker node key.
The worker node key.
The worker information.
-Whether the specified task function exists in this pool.
+Internal Whether the worker node has back pressure (i.e. its tasks queue is full).
+Protected internalWhether worker nodes are executing concurrently their tasks quota or not.
+Protected internalProtected isLists the names of task function available in this pool.
+Protected isProtected registerRegisters once a listener callback on the worker given its worker node key.
+Protected registerRegisters once a listener callback on the worker given its worker node key.
The worker node key.
The message listener callback.
-Protected registerRegisters a listener callback on the worker given its worker node key.
+Protected registerRegisters a listener callback on the worker given its worker node key.
The worker node key.
The message listener callback.
-Removes a task function from this pool.
+Protected sendProtected sendProtected sendSends a message to worker given its worker node key.
The worker node key.
The message.
-Sets the worker node tasks queue options in this pool.
+Sets the worker node tasks queue options in this pool.
The worker node tasks queue options.
-Sets 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 setupProtected setupProtected workerThis method is the message listener registered on each worker.
-Generated using TypeDoc
Protected Readonly workerThis method is the message listener registered on each worker.
+Generated using TypeDoc
A cluster pool with a dynamic number of workers, but a guaranteed minimum number of workers.
+- Preparing search index...
- The search index is not available
poolifier - v3.0.10Class DynamicClusterPool<Data, Response>
A cluster pool with a dynamic number of workers, but a guaranteed minimum number of workers.
This cluster pool creates new workers when the others are busy, up to the maximum number of workers. When the maximum number of workers is reached and workers are busy, an event is emitted. If you want to listen to this event, use the pool's
emitter.Author
Christopher Quadflieg
Since
2.0.0
Type Parameters
Data = unknown
Type of data sent to the worker. This can only be structured-cloneable data.
Response = unknown
Type of execution response. This can only be structured-cloneable data.
-Hierarchy
Index
Constructors
Hierarchy
Index
Constructors
Properties
Constructors
constructor
Constructs a new poolifier dynamic cluster pool.
+Constructors
constructor
Constructs a new poolifier dynamic cluster pool.
Type Parameters
Data = unknown
Response = unknown
Parameters
min: number
Minimum number of workers which are always active.
max: number
Maximum number of workers that can be created by this pool.
filePath: string
Path to an implementation of a
ClusterWorkerfile, which can be relative or absolute.opts: ClusterPoolOptions = {}
Options for this dynamic cluster pool.
-Returns DynamicClusterPool<Data, Response>
Properties
OptionalemitterEvent emitter integrated with async resource on which events can be listened to. +
Returns DynamicClusterPool<Data, Response>
Properties
OptionalemitterEvent 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:
@@ -73,109 +73,109 @@ The async tracking tooling identifier is
-poolifier:<PoolType>-<Wo'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).ProtectedReadonlyfilePath to the worker file.
-ProtectedReadonlymaxMaximum number of workers that can be created by this pool.
-ProtectedReadonlynumberNumber of workers that this pool should manage.
-ProtectedReadonlyoptsOptions for this fixed cluster pool.
-ProtectedpromiseThe task execution response promise map:
+ProtectedReadonlyfilePath to the worker file.
+ProtectedReadonlymaxMaximum number of workers that can be created by this pool.
+ProtectedReadonlynumberNumber of workers that this pool should manage.
+ProtectedReadonlyoptsOptions for this fixed cluster pool.
+ProtectedpromiseThe 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.
-ProtectedworkerWorker choice strategy context referencing a worker choice algorithm implementation.
-ReadonlyInternalworkerPool worker nodes.
-Accessors
ProtectedbusyWhether the pool is busy or not.
+ProtectedworkerWorker choice strategy context referencing a worker choice algorithm implementation.
+ReadonlyInternalworkerPool worker nodes.
+Accessors
ProtectedbusyWhether the pool is busy or not.
The pool busyness boolean status.
-Returns boolean
ProtectedfullWhether the pool is full or not.
+Returns boolean
ProtectedfullWhether the pool is full or not.
The pool filling boolean status.
-Returns boolean
info
Pool information.
-Returns PoolInfo
ProtectedmaxThe pool maximum size.
-Returns number
ProtectedminThe pool minimum size.
-Returns number
PrivatereadyThe pool readiness boolean status.
-Returns boolean
ProtectedtypeThe pool type.
+Returns boolean
info
Pool information.
+Returns PoolInfo
ProtectedmaxThe pool maximum size.
+Returns number
ProtectedminThe pool minimum size.
+Returns number
PrivatereadyThe pool readiness boolean status.
+Returns boolean
ProtectedtypeThe pool type.
If it is
-'dynamic', it provides themaxproperty.Returns "fixed" | "dynamic"
PrivateutilizationThe approximate pool utilization.
+Returns "fixed" | "dynamic"
PrivateutilizationThe approximate pool utilization.
Returns number
The pool utilization.
-ProtectedworkerThe worker type.
-Returns "thread" | "cluster"
Methods
add
Adds a task function to this pool. +
ProtectedworkerThe worker type.
+Returns "thread" | "cluster"
Methods
add
Adds a task function to this pool. If a task function with the same name already exists, it will be overwritten.
Parameters
name: string
The name of the task function.
fn: TaskFunction<Data, Response>
The task function.
Returns Promise<boolean>
trueif the task function was added,falseotherwise.Throws
https://nodejs.org/api/errors.html#class-typeerror If the
nameparameter is not a string or an empty string.Throws
https://nodejs.org/api/errors.html#class-typeerror If the
-fnparameter is not a function.ProtectedafterHook executed after the worker task execution. +
ProtectedafterHook executed after the worker task execution. Can be overridden.
Parameters
workerNodeKey: number
The worker node key.
message: MessageValue<Response, unknown>
The received message.
-Returns void
ProtectedafterMethod hooked up after a worker node has been newly created. +
Returns void
ProtectedafterMethod hooked up after a worker node has been newly created. Can be overridden.
Parameters
workerNodeKey: number
The newly created worker node key.
-Returns void
ProtectedbeforeHook executed before the worker task execution. +
Returns void
ProtectedbeforeHook executed before the worker task execution. Can be overridden.
Parameters
workerNodeKey: number
The worker node key.
task: Task<Data>
The task to execute.
-Returns void
ProtectedcreateCreates a new, completely set up dynamic worker node.
+Returns void