/// <summary>
/// The method tells SWF what decisions have been made for the current decision task.
/// </summary>
/// <param name="taskToken"></param>
/// <param name="decisions"></param>
void CompleteTask(string taskToken, List<Decision> decisions)
{
RespondDecisionTaskCompletedRequest request = new RespondDecisionTaskCompletedRequest()
{
Decisions = decisions,
TaskToken = taskToken
};
this._swfClient.RespondDecisionTaskCompleted(request);
}
async Task CompleteTaskAsync(string taskToken, List<Decision> decisions)
{
RespondDecisionTaskCompletedRequest request = new RespondDecisionTaskCompletedRequest()
{
Decisions = decisions,
TaskToken = taskToken
};
await this._swfClient.RespondDecisionTaskCompletedAsync(request);
}
/// <summary>
/// Used by deciders to tell the service that the <a>DecisionTask</a> identified by the
/// <code>taskToken</code> has successfully completed. The <code>decisions</code> argument
/// specifies the list of decisions made while processing the task.
///
///
/// <para>
/// A <code>DecisionTaskCompleted</code> event is added to the workflow history. The
/// <code>executionContext</code> specified is attached to the event in the workflow execution
/// history.
/// </para>
///
/// <para>
/// <b>Access Control</b>
/// </para>
///
/// <para>
/// If an IAM policy grants permission to use <code>RespondDecisionTaskCompleted</code>,
/// it can express permissions for the list of decisions in the <code>decisions</code>
/// parameter. Each of the decisions has one or more parameters, much like a regular API
/// call. To allow for policies to be as readable as possible, you can express permissions
/// on decisions as if they were actual API calls, including applying conditions to some
/// parameters. For more information, see <a href="http://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-dev-iam.html">Using
/// IAM to Manage Access to Amazon SWF Workflows</a>.
/// </para>
/// </summary>
/// <param name="request">Container for the necessary parameters to execute the RespondDecisionTaskCompleted service method.</param>
///
/// <returns>The response from the RespondDecisionTaskCompleted service method, as returned by SimpleWorkflow.</returns>
/// <exception cref="OperationNotPermittedException">
/// Returned when the caller does not have sufficient permissions to invoke the action.
/// </exception>
/// <exception cref="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.
/// </exception>
public RespondDecisionTaskCompletedResponse RespondDecisionTaskCompleted(RespondDecisionTaskCompletedRequest request)
{
var marshaller = new RespondDecisionTaskCompletedRequestMarshaller();
var unmarshaller = RespondDecisionTaskCompletedResponseUnmarshaller.Instance;
return Invoke<RespondDecisionTaskCompletedRequest,RespondDecisionTaskCompletedResponse>(request, marshaller, unmarshaller);
}
/// <summary>
/// Initiates the asynchronous execution of the RespondDecisionTaskCompleted operation.
/// </summary>
///
/// <param name="request">Container for the necessary parameters to execute the RespondDecisionTaskCompleted operation on AmazonSimpleWorkflowClient.</param>
/// <param name="callback">An AsyncCallback delegate that is invoked when the operation completes.</param>
/// <param name="state">A user-defined state object that is passed to the callback procedure. Retrieve this object from within the callback
/// procedure using the AsyncState property.</param>
///
/// <returns>An IAsyncResult that can be used to poll or wait for results, or both; this value is also needed when invoking EndRespondDecisionTaskCompleted
/// operation.</returns>
public IAsyncResult BeginRespondDecisionTaskCompleted(RespondDecisionTaskCompletedRequest request, AsyncCallback callback, object state)
{
var marshaller = new RespondDecisionTaskCompletedRequestMarshaller();
var unmarshaller = RespondDecisionTaskCompletedResponseUnmarshaller.Instance;
return BeginInvoke<RespondDecisionTaskCompletedRequest>(request, marshaller, unmarshaller,
callback, state);
}
/// <summary>
/// <para> Used by deciders to tell the service that the DecisionTask identified by the <c>taskToken</c> has successfully completed. The
/// <c>decisions</c> argument specifies the list of decisions made while processing the task. </para> <para> A
/// <c>DecisionTaskCompleted</c> event is added to the workflow history. The <c>executionContext</c> specified is attached
/// to the event in the workflow execution history. </para> <para> <b>Access Control</b> </para> <para>If an IAM policy grants permission to use
/// <c>RespondDecisionTaskCompleted</c> , it can express permissions for the list of decisions in the <c>decisions</c> parameter. Each of the
/// decisions has one or more parameters, much like a regular API call. To allow for policies to be as readable as possible, you can express
/// permissions on decisions as if they were actual API calls, including applying conditions to some parameters. For more information, see <a href="http://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-dev-iam.html">Using IAM to Manage Access to Amazon SWF Workflows</a>
/// .</para>
/// </summary>
///
/// <param name="respondDecisionTaskCompletedRequest">Container for the necessary parameters to execute the RespondDecisionTaskCompleted service
/// method on AmazonSimpleWorkflow.</param>
///
/// <exception cref="T:Amazon.SimpleWorkflow.Model.OperationNotPermittedException" />
/// <exception cref="T:Amazon.SimpleWorkflow.Model.UnknownResourceException" />
/// <param name="cancellationToken">
/// A cancellation token that can be used by other objects or threads to receive notice of cancellation.
/// </param>
public async Task<RespondDecisionTaskCompletedResponse> RespondDecisionTaskCompletedAsync(RespondDecisionTaskCompletedRequest respondDecisionTaskCompletedRequest, CancellationToken cancellationToken = default(CancellationToken))
{
var marshaller = new RespondDecisionTaskCompletedRequestMarshaller();
var unmarshaller = RespondDecisionTaskCompletedResponseUnmarshaller.GetInstance();
var response = await Invoke<IRequest, RespondDecisionTaskCompletedRequest, RespondDecisionTaskCompletedResponse>(respondDecisionTaskCompletedRequest, marshaller, unmarshaller, signer, cancellationToken)
.ConfigureAwait(continueOnCapturedContext: false);
return response;
}
internal RespondDecisionTaskCompletedResponse RespondDecisionTaskCompleted(RespondDecisionTaskCompletedRequest request)
{
var task = RespondDecisionTaskCompletedAsync(request);
try
{
return task.Result;
}
catch(AggregateException e)
{
throw e.InnerException;
}
}
/// <summary>
/// Helper method to schedule an activity task
/// </summary>
/// <param name="activityContext">Activity setup context.</param>
/// <returns>Properly set up decision completed request.</returns>
protected RespondDecisionTaskCompletedRequest ScheduleActivityTask(WorkflowActivitySetupContext activityContext)
{
var attributes = new ScheduleActivityTaskDecisionAttributes
{
ActivityId = activityContext.ActivityId,
ActivityType = new ActivityType
{
Name = activityContext.ActivityName,
Version = activityContext.ActivityVersion
},
Control = activityContext.Control,
HeartbeatTimeout = activityContext.HeartbeatTimeout,
Input = activityContext.Input,
ScheduleToCloseTimeout = activityContext.ScheduleToCloseTimeout,
ScheduleToStartTimeout = activityContext.ScheduleToStartTimeout,
StartToCloseTimeout = activityContext.StartToCloseTimeout,
TaskList = new TaskList
{
Name = activityContext.TaskList
}
};
var decisionRequest = new RespondDecisionTaskCompletedRequest
{
Decisions = new List<Decision>
{
new Decision
{
DecisionType = "ScheduleActivityTask",
ScheduleActivityTaskDecisionAttributes = attributes
}
}
};
Debug.WriteLine(">>> Decision: ScheduleActivityTask " +
attributes.ActivityType.Name + " (" + attributes.ActivityType.Version + ")");
return decisionRequest;
}
IAsyncResult invokeRespondDecisionTaskCompleted(RespondDecisionTaskCompletedRequest respondDecisionTaskCompletedRequest, AsyncCallback callback, object state, bool synchronized)
{
IRequest irequest = new RespondDecisionTaskCompletedRequestMarshaller().Marshall(respondDecisionTaskCompletedRequest);
var unmarshaller = RespondDecisionTaskCompletedResponseUnmarshaller.GetInstance();
AsyncResult result = new AsyncResult(irequest, callback, state, synchronized, signer, unmarshaller);
Invoke(result);
return result;
}
/// <summary>
/// <para> Used by deciders to tell the service that the DecisionTask identified by the <c>taskToken</c> has successfully completed. The
/// <c>decisions</c> argument specifies the list of decisions made while processing the task. </para> <para> A
/// <c>DecisionTaskCompleted</c> event is added to the workflow history. The <c>executionContext</c> specified is attached
/// to the event in the workflow execution history. </para> <para> <b>Access Control</b> </para> <para>If an IAM policy grants permission to use
/// <c>RespondDecisionTaskCompleted</c> , it can express permissions for the list of decisions in the <c>decisions</c> parameter. Each of the
/// decisions has one or more parameters, much like a regular API call. To allow for policies to be as readable as possible, you can express
/// permissions on decisions as if they were actual API calls, including applying conditions to some parameters. For more information, see <a href="http://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-dev-iam.html">Using IAM to Manage Access to Amazon SWF Workflows</a>
/// .</para>
/// </summary>
///
/// <param name="respondDecisionTaskCompletedRequest">Container for the necessary parameters to execute the RespondDecisionTaskCompleted service
/// method on AmazonSimpleWorkflow.</param>
///
/// <exception cref="T:Amazon.SimpleWorkflow.Model.OperationNotPermittedException" />
/// <exception cref="T:Amazon.SimpleWorkflow.Model.UnknownResourceException" />
/// <param name="cancellationToken">
/// A cancellation token that can be used by other objects or threads to receive notice of cancellation.
/// </param>
public Task<RespondDecisionTaskCompletedResponse> RespondDecisionTaskCompletedAsync(RespondDecisionTaskCompletedRequest respondDecisionTaskCompletedRequest, CancellationToken cancellationToken = default(CancellationToken))
{
var marshaller = new RespondDecisionTaskCompletedRequestMarshaller();
var unmarshaller = RespondDecisionTaskCompletedResponseUnmarshaller.GetInstance();
return Invoke<IRequest, RespondDecisionTaskCompletedRequest, RespondDecisionTaskCompletedResponse>(respondDecisionTaskCompletedRequest, marshaller, unmarshaller, signer, cancellationToken);
}
protected RespondDecisionTaskCompletedRequest StartTimer(WorkflowTimerSetupContext timer)
{
var attributes = new StartTimerDecisionAttributes
{
TimerId = timer.TimerId,
StartToFireTimeout = timer.StartToFireTimeoutInSeconds.ToString(),
Control = timer.Control
};
var decisionRequest = new RespondDecisionTaskCompletedRequest
{
Decisions = new List<Decision>
{
new Decision
{
DecisionType = "StartTimer",
StartTimerDecisionAttributes = attributes
}
}
};
Debug.WriteLine(">>> Decision: StartTimer " + attributes.TimerId + " (elapses in " + attributes.StartToFireTimeout + " seconds)");
return decisionRequest;
}
/// <summary>
/// Helper method to create a record marker decision.
/// </summary>
/// <param name="details"></param>
/// <param name="markerName"></param>
/// <returns>Properly set up decision completed request.</returns>
protected RespondDecisionTaskCompletedRequest RecordMarker(string details, string markerName)
{
var attributes = new RecordMarkerDecisionAttributes
{
Details = details,
MarkerName = markerName
};
var decisionRequest = new RespondDecisionTaskCompletedRequest
{
Decisions = new List<Decision>
{
new Decision
{
DecisionType = "RecordMarker",
RecordMarkerDecisionAttributes = attributes
}
}
};
Debug.WriteLine(">>> Decision: RecordMarker [" +
attributes.MarkerName + "] = " + attributes.Details);
return decisionRequest;
}
/// <summary>
/// Helper method to create a failed workflow decision.
/// </summary>
/// <param name="details">Failure details.</param>
/// <param name="reason">Reason for the failure.</param>
/// <returns>Properly set up decision completed request.</returns>
protected RespondDecisionTaskCompletedRequest FailWorkflow(string details, string reason)
{
var attributes = new FailWorkflowExecutionDecisionAttributes
{
Details = details,
Reason = reason
};
var decisionRequest = new RespondDecisionTaskCompletedRequest
{
Decisions = new List<Decision>
{
new Decision
{
DecisionType = "FailWorkflowExecution",
FailWorkflowExecutionDecisionAttributes = attributes
}
}
};
Debug.WriteLine(">>> Decision: FailWorkflowExecution");
return decisionRequest;
}
/// <summary>
/// Helper method to create a cancel workflow decision.
/// </summary>
/// <param name="details">Details for the cancellation.</param>
/// <returns>Properly set up decision completed request.</returns>
protected RespondDecisionTaskCompletedRequest CancelWorkflow(string details)
{
var attributes = new CancelWorkflowExecutionDecisionAttributes
{
Details = details
};
var decisionRequest = new RespondDecisionTaskCompletedRequest
{
Decisions = new List<Decision>
{
new Decision
{
DecisionType = "CancelWorkflowExecution",
CancelWorkflowExecutionDecisionAttributes = attributes
}
}
};
Debug.WriteLine(">>> Decision: CancelWorkflowExecution");
return decisionRequest;
}
/// <summary>
/// Helper method to create a complete workflow decision.
/// </summary>
/// <param name="result">Result of the activity execution.</param>
/// <returns>Properly set up decision completed request.</returns>
protected RespondDecisionTaskCompletedRequest CompleteWorkflow(string result)
{
var attributes = new CompleteWorkflowExecutionDecisionAttributes
{
Result = result
};
var decisionRequest = new RespondDecisionTaskCompletedRequest
{
Decisions = new List<Decision>
{
new Decision
{
DecisionType = "CompleteWorkflowExecution",
CompleteWorkflowExecutionDecisionAttributes = attributes
}
}
};
Debug.WriteLine(">>> Decision: CompleteWorkflowExecution");
return decisionRequest;
}
/// <summary>
/// Helper method to create a new child workflow decision.
/// </summary>
/// <param name="workflowContext">Workflow setup context.</param>
/// <returns>Properly set up decision completed request.</returns>
protected RespondDecisionTaskCompletedRequest StartChildWorkflowExecution(WorkflowSetupContext workflowContext)
{
var attributes = new StartChildWorkflowExecutionDecisionAttributes
{
WorkflowId = workflowContext.WorkflowId,
WorkflowType = new WorkflowType
{
Name = workflowContext.WorkflowName,
Version = workflowContext.WorkflowVersion
},
ChildPolicy = workflowContext.ChildPolicy,
Control = workflowContext.Control,
ExecutionStartToCloseTimeout = workflowContext.ExecutionStartToCloseTimeout,
Input = workflowContext.Input,
TagList = workflowContext.TagList,
TaskList = new TaskList
{
Name = workflowContext.TaskList
},
TaskStartToCloseTimeout = workflowContext.TaskStartToCloseTimeout,
};
var decisionRequest = new RespondDecisionTaskCompletedRequest
{
Decisions = new List<Decision>
{
new Decision
{
DecisionType = "StartChildWorkflowExecution",
StartChildWorkflowExecutionDecisionAttributes = attributes
}
}
};
Debug.WriteLine(">>> Decision: StartChildWorkflowExecution" +
attributes.WorkflowType.Name + " (" + attributes.WorkflowType.Version + ")");
return decisionRequest;
}
/// <summary>
/// Initiates the asynchronous execution of the RespondDecisionTaskCompleted operation.
/// <seealso cref="Amazon.SimpleWorkflow.IAmazonSimpleWorkflow"/>
/// </summary>
///
/// <param name="request">Container for the necessary parameters to execute the RespondDecisionTaskCompleted operation.</param>
/// <param name="cancellationToken">
/// A cancellation token that can be used by other objects or threads to receive notice of cancellation.
/// </param>
/// <returns>The task object representing the asynchronous operation.</returns>
public Task<RespondDecisionTaskCompletedResponse> RespondDecisionTaskCompletedAsync(RespondDecisionTaskCompletedRequest request, System.Threading.CancellationToken cancellationToken = default(CancellationToken))
{
var marshaller = new RespondDecisionTaskCompletedRequestMarshaller();
var unmarshaller = RespondDecisionTaskCompletedResponseUnmarshaller.Instance;
return InvokeAsync<RespondDecisionTaskCompletedRequest,RespondDecisionTaskCompletedResponse>(request, marshaller,
unmarshaller, cancellationToken);
}
internal RespondDecisionTaskCompletedResponse RespondDecisionTaskCompleted(RespondDecisionTaskCompletedRequest request)
{
var task = RespondDecisionTaskCompletedAsync(request);
try
{
return task.Result;
}
catch(AggregateException e)
{
ExceptionDispatchInfo.Capture(e.InnerException).Throw();
return null;
}
}
/// <summary>
/// <para> Used by deciders to tell the service that the DecisionTask identified by the <c>taskToken</c> has successfully completed. The
/// <c>decisions</c> argument specifies the list of decisions made while processing the task. </para> <para> A
/// <c>DecisionTaskCompleted</c> event is added to the workflow history. The <c>executionContext</c> specified is attached
/// to the event in the workflow execution history. </para>
/// </summary>
///
/// <param name="respondDecisionTaskCompletedRequest">Container for the necessary parameters to execute the RespondDecisionTaskCompleted service
/// method on AmazonSimpleWorkflow.</param>
///
/// <exception cref="OperationNotPermittedException"/>
/// <exception cref="UnknownResourceException"/>
public RespondDecisionTaskCompletedResponse RespondDecisionTaskCompleted(RespondDecisionTaskCompletedRequest respondDecisionTaskCompletedRequest)
{
IRequest<RespondDecisionTaskCompletedRequest> request = new RespondDecisionTaskCompletedRequestMarshaller().Marshall(respondDecisionTaskCompletedRequest);
RespondDecisionTaskCompletedResponse response = Invoke<RespondDecisionTaskCompletedRequest, RespondDecisionTaskCompletedResponse> (request, this.signer, RespondDecisionTaskCompletedResponseUnmarshaller.GetInstance());
return response;
}
/// <summary>
/// <para> Used by deciders to tell the service that the DecisionTask identified by the <c>taskToken</c> has successfully completed. The
/// <c>decisions</c> argument specifies the list of decisions made while processing the task. </para> <para> A
/// <c>DecisionTaskCompleted</c> event is added to the workflow history. The <c>executionContext</c> specified is attached
/// to the event in the workflow execution history. </para>
/// </summary>
///
/// <param name="respondDecisionTaskCompletedRequest">Container for the necessary parameters to execute the RespondDecisionTaskCompleted service
/// method on AmazonSimpleWorkflow.</param>
///
/// <exception cref="OperationNotPermittedException"/>
/// <exception cref="UnknownResourceException"/>
public RespondDecisionTaskCompletedResponse RespondDecisionTaskCompleted(RespondDecisionTaskCompletedRequest respondDecisionTaskCompletedRequest)
{
IAsyncResult asyncResult = invokeRespondDecisionTaskCompleted(respondDecisionTaskCompletedRequest, null, null, true);
return EndRespondDecisionTaskCompleted(asyncResult);
}
// Simple logic
// Creates four activities at the begining
// Waits for them to complete and completes the workflow
static void Decider()
{
int activityCount = 0; // This refers to total number of activities per workflow
IAmazonSimpleWorkflow swfClient = AWSClientFactory.CreateAmazonSimpleWorkflowClient();
while (true)
{
Console.WriteLine("Decider: Polling for decision task ...");
PollForDecisionTaskRequest request = new PollForDecisionTaskRequest()
{
Domain = domainName,
TaskList = new TaskList() {Name = "HelloWorld"}
};
PollForDecisionTaskResponse response = swfClient.PollForDecisionTask(request);
if (response.DecisionTask.TaskToken == null)
{
Console.WriteLine("Decider: NULL");
continue;
}
int completedActivityTaskCount = 0, totalActivityTaskCount = 0;
foreach (HistoryEvent e in response.DecisionTask.Events)
{
Console.WriteLine("Decider: EventType - " + e.EventType +
", EventId - " + e.EventId);
if (e.EventType == "ActivityTaskCompleted")
completedActivityTaskCount++;
if (e.EventType.Value.StartsWith("Activity"))
totalActivityTaskCount++;
}
Console.WriteLine(".... completedCount=" + completedActivityTaskCount);
List<Decision> decisions = new List<Decision>();
if (totalActivityTaskCount == 0) // Create this only at the begining
{
ScheduleActivity("Activity1A", decisions);
ScheduleActivity("Activity1B", decisions);
ScheduleActivity("Activity2", decisions);
ScheduleActivity("Activity2", decisions);
activityCount = 4;
}
else if (completedActivityTaskCount == activityCount)
{
Decision decision = new Decision()
{
DecisionType = DecisionType.CompleteWorkflowExecution,
CompleteWorkflowExecutionDecisionAttributes =
new CompleteWorkflowExecutionDecisionAttributes {
Result = "{\"Result\":\"WF Complete!\"}"
}
};
decisions.Add(decision);
Console.WriteLine("Decider: WORKFLOW COMPLETE!!!!!!!!!!!!!!!!!!!!!!");
}
RespondDecisionTaskCompletedRequest respondDecisionTaskCompletedRequest =
new RespondDecisionTaskCompletedRequest() {
Decisions = decisions,
TaskToken = response.DecisionTask.TaskToken
};
swfClient.RespondDecisionTaskCompleted(respondDecisionTaskCompletedRequest);
}
}
/// <summary>
/// Initiates the asynchronous execution of the RespondDecisionTaskCompleted operation.
/// <seealso cref="Amazon.SimpleWorkflow.AmazonSimpleWorkflow.RespondDecisionTaskCompleted"/>
/// </summary>
///
/// <param name="respondDecisionTaskCompletedRequest">Container for the necessary parameters to execute the RespondDecisionTaskCompleted
/// operation on AmazonSimpleWorkflow.</param>
/// <param name="callback">An AsyncCallback delegate that is invoked when the operation completes.</param>
/// <param name="state">A user-defined state object that is passed to the callback procedure. Retrieve this object from within the callback
/// procedure using the AsyncState property.</param>
public IAsyncResult BeginRespondDecisionTaskCompleted(RespondDecisionTaskCompletedRequest respondDecisionTaskCompletedRequest, AsyncCallback callback, object state)
{
return invokeRespondDecisionTaskCompleted(respondDecisionTaskCompletedRequest, callback, state, false);
}
/// <summary>
/// Helper method to create an empty decision request.
/// </summary>
/// <returns>Properly set up decision completed request.</returns>
public virtual RespondDecisionTaskCompletedRequest EmptyDecision()
{
var decisionRequest = new RespondDecisionTaskCompletedRequest {
Decisions = new List<Decision>()
};
Debug.WriteLine(">>> Decision: <EMPTY>");
return decisionRequest;
}
