AWS SDK Version 3 for .NET
API Reference

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Used by workers to tell the service that the ActivityTask identified by the taskToken was successfully canceled. Additional details can be provided using the details argument.

These details (if provided) appear in the ActivityTaskCanceled event added to the workflow history.

Only use this operation if the canceled flag of a RecordActivityTaskHeartbeat request returns true and if the activity can be safely undone or abandoned.

A task is considered open from the time that it is scheduled until it is closed. Therefore a task is reported as open while a worker is processing it. A task is closed after it has been specified in a call to RespondActivityTaskCompleted, RespondActivityTaskCanceled, RespondActivityTaskFailed, or the task has timed out.

Access Control

You can use IAM policies to control this action's access to Amazon SWF resources as follows:

If the caller doesn't have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter is set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows in the Amazon SWF Developer Guide.

Note:

For PCL this operation is only available in asynchronous form. Please refer to RespondActivityTaskCanceledAsync.

Namespace: Amazon.SimpleWorkflow
Assembly: AWSSDK.SimpleWorkflow.dll
Version: 3.x.y.z

Syntax

C#
public virtual RespondActivityTaskCanceledResponse RespondActivityTaskCanceled(
         RespondActivityTaskCanceledRequest request
)
Parameters
request
Type: Amazon.SimpleWorkflow.Model.RespondActivityTaskCanceledRequest

Container for the necessary parameters to execute the RespondActivityTaskCanceled service method.

Return Value
The response from the RespondActivityTaskCanceled service method, as returned by SimpleWorkflow.

Exceptions

ExceptionCondition
OperationNotPermittedException Returned when the caller doesn't have sufficient permissions to invoke the action.
UnknownResourceException Returned when the named resource cannot be found with in the scope of this operation (region or domain). This could happen if the named resource was never created or is no longer available for this operation.

Version Information

.NET Framework:
Supported in: 4.5, 4.0, 3.5

Portable Class Library:
Supported in: Windows Store Apps
Supported in: Windows Phone 8.1
Supported in: Xamarin Android
Supported in: Xamarin iOS (Unified)
Supported in: Xamarin.Forms

See Also