Class ClusterWorker<Data, Response>

A cluster worker used by a poolifier ClusterPool.

+ClusterWorker | poolifier - v3.1.29

Class ClusterWorker<Data, Response>

A cluster worker used by a poolifier ClusterPool.

When this worker is inactive for more than the given maxInactiveTime, it will send a termination request to its main worker.

If you use a DynamicClusterPool the extra workers that were created will be terminated, but the minimum number of workers will be guaranteed.

Author

Christopher Quadflieg

Since

2.0.0

Type Parameters

Data = unknown
Type of data this worker receives from pool's execution. This can only be structured-cloneable data.
-
Response = unknown
Type of response the worker sends back to the main worker. This can only be structured-cloneable data.
-

Hierarchy

AbstractWorker<Worker, Data, Response>
- ClusterWorker

Index

Constructors

constructor

new ClusterWorker<Data, Response>(taskFunctions, opts?): ClusterWorker<Data, Response>
Constructs a new poolifier cluster worker.
-
Type Parameters
- Data = unknown
- Response = unknown
Parameters
- taskFunctions: TaskFunction<Data, Response> | TaskFunctions<Data, Response>
  Task function(s) processed by the worker when the pool's execution function is invoked.
  -
- opts: WorkerOptions = {}
  Options for the worker.
  -
Returns ClusterWorker<Data, Response>
Overrides AbstractWorker.constructor
- Defined in src/worker/cluster-worker.ts:31

Properties

`Protected` `Optional` activeInterval

activeInterval?: Timeout

Handler id of the activeInterval worker activity check.

`Protected` `Readonly` isMain

isMain: boolean

Whether this is the main worker or not.

`Protected` lastTaskTimestamp

lastTaskTimestamp: number

Timestamp of the last task processed by this worker.

`Protected` opts

opts: WorkerOptions = DEFAULT_WORKER_OPTIONS

Options for the worker.

`Protected` statistics

statistics: WorkerStatistics

Performance statistics computation requirements.

`Protected` taskFunctions

taskFunctions: Map<string, TaskFunction<Data, Response>>

Task function(s) processed by the worker when the pool's execution function is invoked.

Accessors

`Protected` id

get id(): number
Worker id.
-
Returns number
Overrides AbstractWorker.id
- Defined in src/worker/cluster-worker.ts:57

Methods

addTaskFunction

addTaskFunction(name, fn): TaskFunctionOperationResult
Adds a task function to the worker. +

Type Parameters

Data = unknown
Type of data this worker receives from pool's execution. This can only be structured-cloneable data.
+
Response = unknown
Type of response the worker sends back to the main worker. This can only be structured-cloneable data.
+

Hierarchy (view full)

AbstractWorker<Worker, Data, Response>
- ClusterWorker

Index

Constructors

constructor +

Properties

activeInterval? +isMain +lastTaskTimestamp +opts +statistics? +taskFunctions +

Accessors

id +

Methods

addTaskFunction +getMainWorker +handleError +handleKillMessage +handleReadyMessage +handleTaskFunctionOperationMessage +hasTaskFunction +listTaskFunctionNames +messageListener +removeTaskFunction +run +runAsync +runSync +sendTaskFunctionNamesToMainWorker +sendToMainWorker +setDefaultTaskFunction +

Constructors

constructor

new ClusterWorker<Data, Response>(taskFunctions, opts?): ClusterWorker<Data, Response>
Constructs a new poolifier cluster worker.
+
Type Parameters
- Data = unknown
- Response = unknown
Parameters
- taskFunctions: TaskFunction<Data, Response> | TaskFunctions<Data, Response>
  Task function(s) processed by the worker when the pool's execution function is invoked.
  +
- opts: WorkerOptions = {}
  Options for the worker.
  +
Returns ClusterWorker<Data, Response>
Overrides AbstractWorker.constructor
- Defined in src/worker/cluster-worker.ts:32

Properties

`Protected` `Optional` activeInterval

activeInterval?: Timeout

Handler id of the activeInterval worker activity check.

`Protected` `Readonly` isMain

isMain: undefined | boolean

Whether this is the main worker or not.

`Protected` lastTaskTimestamp

lastTaskTimestamp: number

Timestamp of the last task processed by this worker.

`Protected` opts

opts: WorkerOptions = DEFAULT_WORKER_OPTIONS

Options for the worker.

`Protected` `Optional` statistics

statistics?: WorkerStatistics

Performance statistics computation requirements.

`Protected` taskFunctions

taskFunctions: Map<string, TaskFunction<Data, Response>>

Task function(s) processed by the worker when the pool's execution function is invoked.

Accessors

`Protected` id

get id(): number
Worker id.
+
Returns number
Overrides AbstractWorker.id
- Defined in src/worker/cluster-worker.ts:58

Methods

addTaskFunction

addTaskFunction(name, fn): TaskFunctionOperationResult
Adds a task function to the worker. If a task function with the same name already exists, it is replaced.
-
Parameters
- name: string
  The name of the task function to add.
  -
- fn: TaskFunction<Data, Response>
  The task function to add.
  +
  Parameters
  - name: string
    The name of the task function to add.
    +
  - fn: TaskFunction<Data, Response>
    The task function to add.
  Returns TaskFunctionOperationResult
  Whether the task function was added or not.
  -
  Inherited from AbstractWorker.addTaskFunction
  - Defined in src/worker/abstract-worker.ts:175

`Protected` getMainWorker

getMainWorker(): Worker
Returns the main worker.
-
Returns Worker
Reference to the main worker.
+
Inherited from AbstractWorker.addTaskFunction
- Defined in src/worker/abstract-worker.ts:180

`Protected` getMainWorker

getMainWorker(): Worker
Returns the main worker.
+
Returns Worker
Reference to the main worker.

Throws
https://nodejs.org/api/errors.html#class-error If the main worker is not set.
-
Inherited from AbstractWorker.getMainWorker
- Defined in src/worker/abstract-worker.ts:444

`Protected` handleError

handleError(error): string
Handles an error and convert it to a string so it can be sent back to the main worker.
-
Parameters
- error: string | Error
  The error raised by the worker.
  +
  Inherited from AbstractWorker.getMainWorker
  - Defined in src/worker/abstract-worker.ts:452

`Protected` handleError

handleError(error): string
Handles an error and convert it to a string so it can be sent back to the main worker.
+
Parameters
- error: string | Error
  The error raised by the worker.
Returns string
The error message.
-
Inherited from AbstractWorker.handleError
- Defined in src/worker/abstract-worker.ts:475

`Protected` handleKillMessage

handleKillMessage(_message): void
Handles a kill message sent by the main worker.
-
Parameters
- _message: MessageValue<Data, unknown>
Returns void
Inherited from AbstractWorker.handleKillMessage
- Defined in src/worker/abstract-worker.ts:367

`Protected` handleReadyMessage

handleReadyMessage(message): void
Handles the ready message sent by the main worker.
-
Parameters
- message: MessageValue<Data, unknown>
  The ready message.
  -
Returns void
Overrides AbstractWorker.handleReadyMessage
- Defined in src/worker/cluster-worker.ts:39

`Protected` handleTaskFunctionOperationMessage

handleTaskFunctionOperationMessage(message): void
Parameters
- message: MessageValue<Data, unknown>
Returns void
Inherited from AbstractWorker.handleTaskFunctionOperationMessage
- Defined in src/worker/abstract-worker.ts:322

hasTaskFunction

hasTaskFunction(name): TaskFunctionOperationResult
Checks if the worker has a task function with the given name.
-
Parameters
- name: string
  The name of the task function to check.
  +
  Inherited from AbstractWorker.handleError
  Defined in src/worker/abstract-worker.ts:483

`Protected` handleKillMessage

handleKillMessage(_message): void
Handles a kill message sent by the main worker.
+
Parameters
- _message: MessageValue<Data, unknown>
Returns void
Inherited from AbstractWorker.handleKillMessage
- Defined in src/worker/abstract-worker.ts:375

`Protected` handleReadyMessage

handleReadyMessage(message): void
Handles the ready message sent by the main worker.
+
Parameters
- message: MessageValue<Data, unknown>
  The ready message.
  +
Returns void
Overrides AbstractWorker.handleReadyMessage
- Defined in src/worker/cluster-worker.ts:40

`Protected` handleTaskFunctionOperationMessage

handleTaskFunctionOperationMessage(message): void
Parameters
- message: MessageValue<Data, unknown>
Returns void
Inherited from AbstractWorker.handleTaskFunctionOperationMessage
- Defined in src/worker/abstract-worker.ts:325

hasTaskFunction

hasTaskFunction(name): TaskFunctionOperationResult
Checks if the worker has a task function with the given name.
+
Parameters
- name: string
  The name of the task function to check.
Returns TaskFunctionOperationResult
Whether the worker has a task function with the given name or not.
-
Inherited from AbstractWorker.hasTaskFunction
- Defined in src/worker/abstract-worker.ts:158

listTaskFunctionNames

listTaskFunctionNames(): string[]
Lists the names of the worker's task functions.
+
Inherited from AbstractWorker.hasTaskFunction
- Defined in src/worker/abstract-worker.ts:163

listTaskFunctionNames

listTaskFunctionNames(): string[]
Lists the names of the worker's task functions.

Returns string[]
The names of the worker's task functions.
-
Inherited from AbstractWorker.listTaskFunctionNames
- Defined in src/worker/abstract-worker.ts:239

`Protected` messageListener

messageListener(message): void
Worker message listener.
-
Parameters
- message: MessageValue<Data, unknown>
  The received message.
  -
Returns void
Inherited from AbstractWorker.messageListener
- Defined in src/worker/abstract-worker.ts:302

removeTaskFunction

removeTaskFunction(name): TaskFunctionOperationResult
Removes a task function from the worker.
-
Parameters
- name: string
  The name of the task function to remove.
  +
  Inherited from AbstractWorker.listTaskFunctionNames
  Defined in src/worker/abstract-worker.ts:244

`Protected` messageListener

messageListener(message): void
Worker message listener.
+
Parameters
- message: MessageValue<Data, unknown>
  The received message.
  +
Returns void
Inherited from AbstractWorker.messageListener
- Defined in src/worker/abstract-worker.ts:305

removeTaskFunction

removeTaskFunction(name): TaskFunctionOperationResult
Removes a task function from the worker.
+
Parameters
- name: string
  The name of the task function to remove.
Returns TaskFunctionOperationResult
Whether the task function existed and was removed or not.
-
Inherited from AbstractWorker.removeTaskFunction
- Defined in src/worker/abstract-worker.ts:210

`Protected` `Readonly` run

run(task): void
Runs the given task.
-
Parameters
- task: Task<Data>
  The task to execute.
  -
Returns void
Inherited from AbstractWorker.run
- Defined in src/worker/abstract-worker.ts:484

`Protected` `Readonly` runAsync

runAsync(fn, task): void
Runs the given task function asynchronously.
-
Parameters
- fn: TaskAsyncFunction<Data, Response>
  Task function that will be executed.
  -
- task: Task<Data>
  Input data for the task function.
  -
Returns void
Inherited from AbstractWorker.runAsync
- Defined in src/worker/abstract-worker.ts:546

`Protected` `Readonly` runSync

runSync(fn, task): void
Runs the given task function synchronously.
-
Parameters
- fn: TaskSyncFunction<Data, Response>
  Task function that will be executed.
  -
- task: Task<Data>
  Input data for the task function.
  -
Returns void
Inherited from AbstractWorker.runSync
- Defined in src/worker/abstract-worker.ts:512

`Protected` sendTaskFunctionNamesToMainWorker

sendTaskFunctionNamesToMainWorker(): void
Sends task function names to the main worker.
-
Returns void
Inherited from AbstractWorker.sendTaskFunctionNamesToMainWorker
- Defined in src/worker/abstract-worker.ts:463

`Protected` `Readonly` sendToMainWorker

sendToMainWorker(message): void
Sends a message to main worker.
-
Parameters
- message: MessageValue<Response, unknown>
  The response message.
  -
Returns void
Overrides AbstractWorker.sendToMainWorker
- Defined in src/worker/cluster-worker.ts:62

setDefaultTaskFunction

setDefaultTaskFunction(name): TaskFunctionOperationResult
Sets the default task function to use in the worker.
-
Parameters
- name: string
  The name of the task function to use as default task function.
  +
  Inherited from AbstractWorker.removeTaskFunction
  Defined in src/worker/abstract-worker.ts:215

`Protected` `Readonly` run

run(task): void
Runs the given task.
+
Parameters
- task: Task<Data>
  The task to execute.
  +
Returns void
Inherited from AbstractWorker.run
- Defined in src/worker/abstract-worker.ts:492

`Protected` `Readonly` runAsync

runAsync(fn, task): void
Runs the given task function asynchronously.
+
Parameters
- fn: TaskAsyncFunction<Data, Response>
  Task function that will be executed.
  +
- task: Task<Data>
  Input data for the task function.
  +
Returns void
Inherited from AbstractWorker.runAsync
- Defined in src/worker/abstract-worker.ts:556

`Protected` `Readonly` runSync

runSync(fn, task): void
Runs the given task function synchronously.
+
Parameters
- fn: TaskSyncFunction<Data, Response>
  Task function that will be executed.
  +
- task: Task<Data>
  Input data for the task function.
  +
Returns void
Inherited from AbstractWorker.runSync
- Defined in src/worker/abstract-worker.ts:521

`Protected` sendTaskFunctionNamesToMainWorker

sendTaskFunctionNamesToMainWorker(): void
Sends task function names to the main worker.
+
Returns void
Inherited from AbstractWorker.sendTaskFunctionNamesToMainWorker
- Defined in src/worker/abstract-worker.ts:471

`Protected` `Readonly` sendToMainWorker

sendToMainWorker(message): void
Sends a message to main worker.
+
Parameters
- message: MessageValue<Response, unknown>
  The response message.
  +
Returns void
Overrides AbstractWorker.sendToMainWorker
- Defined in src/worker/cluster-worker.ts:63

setDefaultTaskFunction

setDefaultTaskFunction(name): TaskFunctionOperationResult
Sets the default task function to use in the worker.
+
Parameters
- name: string
  The name of the task function to use as default task function.
Returns TaskFunctionOperationResult
Whether the default task function was set or not.
-
Inherited from AbstractWorker.setDefaultTaskFunction
- Defined in src/worker/abstract-worker.ts:266

Generated using TypeDoc

\ No newline at end of file +

Class ClusterWorker<Data, Response>

Class ClusterWorker<Data, Response>

Author

Since

Type Parameters

Data = unknown

Response = unknown

Hierarchy

Index

Constructors

Properties

Accessors

Methods

Constructors

constructor

Type Parameters

Data = unknown

Response = unknown

Parameters

taskFunctions: TaskFunction<Data, Response> | TaskFunctions<Data, Response>

opts: WorkerOptions = {}

Returns ClusterWorker<Data, Response>

Properties

Protected Optional activeInterval

Protected Readonly isMain

Protected lastTaskTimestamp

Protected opts

Protected statistics

Protected taskFunctions

Accessors

Protected id

Returns number

Methods

addTaskFunction

Type Parameters

Hierarchy (view full)

Index

Constructors

Properties

Accessors

Methods

Constructors

constructor

Type Parameters

Parameters

Returns ClusterWorker<Data, Response>

Properties

Protected Optional activeInterval

Protected Readonly isMain

Protected lastTaskTimestamp

Protected opts

Protected Optional statistics

Protected taskFunctions

Accessors

Protected id

Returns number

Methods

addTaskFunction

Parameters

name: string

fn: TaskFunction<Data, Response>

Parameters

Returns TaskFunctionOperationResult

Protected getMainWorker

Returns Worker

Protected getMainWorker

Returns Worker

Throws

Protected handleError

Parameters

error: string | Error

Protected handleError

Parameters

Returns string

Protected handleKillMessage

Parameters

_message: MessageValue<Data, unknown>

Returns void

Protected handleReadyMessage

Parameters

`Protected` `Optional` activeInterval

`Protected` `Readonly` isMain

`Protected` lastTaskTimestamp

`Protected` opts

`Protected` statistics

`Protected` taskFunctions

`Protected` id

`Protected` `Optional` activeInterval

`Protected` `Readonly` isMain

`Protected` lastTaskTimestamp

`Protected` opts

`Protected` `Optional` statistics

`Protected` taskFunctions

`Protected` id

`Protected` getMainWorker

`Protected` getMainWorker

`Protected` handleError

`Protected` handleError

`Protected` handleKillMessage

`Protected` handleReadyMessage

`Protected` handleTaskFunctionOperationMessage

`Protected` handleKillMessage

`Protected` handleReadyMessage

`Protected` handleTaskFunctionOperationMessage

`Protected` messageListener

`Protected` messageListener

`Protected` `Readonly` run

`Protected` `Readonly` runAsync

`Protected` `Readonly` runSync

`Protected` sendTaskFunctionNamesToMainWorker

`Protected` `Readonly` sendToMainWorker

`Protected` `Readonly` run

`Protected` `Readonly` runAsync

`Protected` `Readonly` runSync

`Protected` sendTaskFunctionNamesToMainWorker