io.temporal.worker

Class WorkerOptions.Builder

java.lang.Object

io.temporal.worker.WorkerOptions.Builder

Enclosing class:

WorkerOptions

public static final class WorkerOptions.Builder
extends java.lang.Object

Method Summary

Modifier and Type	Method and Description
WorkerOptions	build()
WorkerOptions.Builder	setActivityPollThreadCount(int activityPollThreadCount) Number of simultaneous poll requests on activity task queue.
WorkerOptions.Builder	setDefaultDeadlockDetectionTimeout(long defaultDeadlockDetectionTimeoutMs)
WorkerOptions.Builder	setLocalActivityWorkerOnly(boolean localActivityWorkerOnly) If set to true worker would only handle workflow tasks and local activities.
WorkerOptions.Builder	setMaxConcurrentActivityExecutionSize(int maxConcurrentActivityExecutionSize)
WorkerOptions.Builder	setMaxConcurrentLocalActivityExecutionSize(int maxConcurrentLocalActivityExecutionSize)
WorkerOptions.Builder	setMaxConcurrentWorkflowTaskExecutionSize(int maxConcurrentWorkflowTaskExecutionSize)
WorkerOptions.Builder	setMaxTaskQueueActivitiesPerSecond(double maxTaskQueueActivitiesPerSecond) Optional: Sets the rate limiting on number of activities that can be executed per second.
WorkerOptions.Builder	setMaxWorkerActivitiesPerSecond(double maxWorkerActivitiesPerSecond)
WorkerOptions.Builder	setWorkflowPollThreadCount(int workflowPollThreadCount) Number of simultaneous poll requests on workflow task queue.
WorkerOptions	validateAndBuildWithDefaults()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

setMaxWorkerActivitiesPerSecond

public WorkerOptions.Builder setMaxWorkerActivitiesPerSecond(double maxWorkerActivitiesPerSecond)

Parameters:

maxWorkerActivitiesPerSecond - Maximum number of activities started per second by this worker. Default is 0 which means unlimited.

Returns:

this

If worker is not fully loaded while tasks are backing up on the service consider increasing setActivityPollThreadCount(int).

Note that this is a per worker limit. Use setMaxTaskQueueActivitiesPerSecond(double) to set per task queue limit across multiple workers.

setMaxConcurrentActivityExecutionSize

public WorkerOptions.Builder setMaxConcurrentActivityExecutionSize(int maxConcurrentActivityExecutionSize)

Parameters:

maxConcurrentActivityExecutionSize - Maximum number of activities executed in parallel. Default is 200, which is chosen if set to zero.

Returns:

this

setMaxConcurrentWorkflowTaskExecutionSize

public WorkerOptions.Builder setMaxConcurrentWorkflowTaskExecutionSize(int maxConcurrentWorkflowTaskExecutionSize)

Parameters:

maxConcurrentWorkflowTaskExecutionSize - Maximum number of simultaneously executed workflow tasks. Default is 200, which is chosen if set to zero.

Returns:

this

Note that this is not related to the total number of open workflows which do not need to be loaded in a worker when they are not making state transitions.

setMaxConcurrentLocalActivityExecutionSize

public WorkerOptions.Builder setMaxConcurrentLocalActivityExecutionSize(int maxConcurrentLocalActivityExecutionSize)

Parameters:

maxConcurrentLocalActivityExecutionSize - Maximum number of local activities executed in parallel. Default is 200, which is chosen if set to zero.

Returns:

this

setMaxTaskQueueActivitiesPerSecond

public WorkerOptions.Builder setMaxTaskQueueActivitiesPerSecond(double maxTaskQueueActivitiesPerSecond)

Optional: Sets the rate limiting on number of activities that can be executed per second. This is managed by the server and controls activities per second for the entire task queue across all the workers. Notice that the number is represented in double, so that you can set it to less than 1 if needed. For example, set the number to 0.1 means you want your activity to be executed once every 10 seconds. This can be used to protect down stream services from flooding. The zero value of this uses the default value. Default is unlimited.

setWorkflowPollThreadCount

public WorkerOptions.Builder setWorkflowPollThreadCount(int workflowPollThreadCount)

Number of simultaneous poll requests on workflow task queue. Note that the majority of the workflow tasks will be using host local task queue due to caching. So try incrementing WorkerFactoryOptions.Builder.setWorkflowHostLocalPollThreadCount(int) before this one.

Default is 2.

setActivityPollThreadCount

public WorkerOptions.Builder setActivityPollThreadCount(int activityPollThreadCount)

Number of simultaneous poll requests on activity task queue. Consider incrementing if the worker is not throttled due to `MaxActivitiesPerSecond` or `MaxConcurrentActivityExecutionSize` options and still cannot keep up with the request rate.

Default is 5.

setLocalActivityWorkerOnly

public WorkerOptions.Builder setLocalActivityWorkerOnly(boolean localActivityWorkerOnly)

If set to true worker would only handle workflow tasks and local activities. Non-local activities will not be executed by this worker.

Default is false.

setDefaultDeadlockDetectionTimeout

public WorkerOptions.Builder setDefaultDeadlockDetectionTimeout(long defaultDeadlockDetectionTimeoutMs)

Parameters:

defaultDeadlockDetectionTimeoutMs - time period in ms that will be used the detect workflows deadlock. Default is 1000ms, which is chosen if set to zero.

Specifies an amount of time in milliseconds that workflow tasks are allowed to execute without interruption. If workflow task runs longer than specified interval without yielding (like calling an Activity), it will fail automatically.

Returns:

this

See Also:

PotentialDeadlockException

build

public WorkerOptions build()

validateAndBuildWithDefaults

public WorkerOptions validateAndBuildWithDefaults()