/// <summary>
/// Initiates the asynchronous execution of the StartWorkflowExecution operation.
/// <seealso cref="Amazon.SimpleWorkflow.AmazonSimpleWorkflow.StartWorkflowExecution"/>
/// </summary>
///
/// <param name="startWorkflowExecutionRequest">Container for the necessary parameters to execute the StartWorkflowExecution 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>
///
/// <returns>An IAsyncResult that can be used to poll or wait for results, or both; this value is also needed when invoking
/// EndStartWorkflowExecution operation.</returns>
public IAsyncResult BeginStartWorkflowExecution(StartWorkflowExecutionRequest startWorkflowExecutionRequest, AsyncCallback callback, object state)
{
return invokeStartWorkflowExecution(startWorkflowExecutionRequest, callback, state, false);
}
/// <summary>
/// <para> Starts an execution of the workflow type in the specified domain using the provided workflowId, and input data. </para> <para> This
/// action returns the newly started workflow execution. </para>
/// </summary>
///
/// <param name="startWorkflowExecutionRequest">Container for the necessary parameters to execute the StartWorkflowExecution service method on
/// AmazonSimpleWorkflow.</param>
///
/// <returns>The response from the StartWorkflowExecution service method, as returned by AmazonSimpleWorkflow.</returns>
///
/// <exception cref="TypeDeprecatedException"/>
/// <exception cref="OperationNotPermittedException"/>
/// <exception cref="DefaultUndefinedException"/>
/// <exception cref="UnknownResourceException"/>
/// <exception cref="WorkflowExecutionAlreadyStartedException"/>
/// <exception cref="LimitExceededException"/>
public StartWorkflowExecutionResponse StartWorkflowExecution(StartWorkflowExecutionRequest startWorkflowExecutionRequest)
{
IAsyncResult asyncResult = invokeStartWorkflowExecution(startWorkflowExecutionRequest, null, null, true);
return EndStartWorkflowExecution(asyncResult);
}
IAsyncResult invokeStartWorkflowExecution(StartWorkflowExecutionRequest startWorkflowExecutionRequest, AsyncCallback callback, object state, bool synchronized)
{
IRequest irequest = new StartWorkflowExecutionRequestMarshaller().Marshall(startWorkflowExecutionRequest);
var unmarshaller = StartWorkflowExecutionResponseUnmarshaller.GetInstance();
AsyncResult result = new AsyncResult(irequest, callback, state, synchronized, signer, unmarshaller);
Invoke(result);
return result;
}
internal StartWorkflowExecutionResponse StartWorkflowExecution(StartWorkflowExecutionRequest request)
{
var task = StartWorkflowExecutionAsync(request);
try
{
return task.Result;
}
catch(AggregateException e)
{
ExceptionDispatchInfo.Capture(e.InnerException).Throw();
return null;
}
}
/// <summary>
/// <para> Starts an execution of the workflow type in the specified domain using the provided <c>workflowId</c> and input data. </para>
/// <para>This action returns the newly started workflow execution.</para> <para> <b>Access Control</b> </para> <para>You can use IAM policies
/// to control this action's access to Amazon SWF resources as follows:</para>
/// <ul>
/// <li>Use a <c>Resource</c> element with the domain name to limit the action to only specified domains.</li>
/// <li>Use an <c>Action</c> element to allow or deny permission to call this action.</li>
/// <li>Constrain the following parameters by using a <c>Condition</c> element with the appropriate keys.
/// <ul>
/// <li> <c>tagList.member.0</c> : The key is <c>swf:tagList.member.0</c> .</li>
/// <li> <c>tagList.member.1</c> : The key is <c>swf:tagList.member.1</c> .</li>
/// <li> <c>tagList.member.2</c> : The key is <c>swf:tagList.member.2</c> .</li>
/// <li> <c>tagList.member.3</c> : The key is <c>swf:tagList.member.3</c> .</li>
/// <li> <c>tagList.member.4</c> : The key is <c>swf:tagList.member.4</c> .</li>
/// <li> <c>taskList</c> : String constraint. The key is <c>swf:taskList.name</c> .</li>
/// <li> <c>name</c> : String constraint. The key is <c>swf:workflowType.name</c> .</li>
/// <li> <c>version</c> : String constraint. The key is <c>swf:workflowType.version</c> .</li>
///
/// </ul>
/// </li>
///
/// </ul>
/// <para>If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified
/// constraints, the action fails by throwing <c>OperationNotPermitted</c> . For details and example IAM policies, 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="startWorkflowExecutionRequest">Container for the necessary parameters to execute the StartWorkflowExecution service method on
/// AmazonSimpleWorkflow.</param>
///
/// <returns>The response from the StartWorkflowExecution service method, as returned by AmazonSimpleWorkflow.</returns>
///
/// <exception cref="T:Amazon.SimpleWorkflow.Model.TypeDeprecatedException" />
/// <exception cref="T:Amazon.SimpleWorkflow.Model.OperationNotPermittedException" />
/// <exception cref="T:Amazon.SimpleWorkflow.Model.DefaultUndefinedException" />
/// <exception cref="T:Amazon.SimpleWorkflow.Model.UnknownResourceException" />
/// <exception cref="T:Amazon.SimpleWorkflow.Model.WorkflowExecutionAlreadyStartedException" />
/// <exception cref="T:Amazon.SimpleWorkflow.Model.LimitExceededException" />
/// <param name="cancellationToken">
/// A cancellation token that can be used by other objects or threads to receive notice of cancellation.
/// </param>
public Task<StartWorkflowExecutionResponse> StartWorkflowExecutionAsync(StartWorkflowExecutionRequest startWorkflowExecutionRequest, CancellationToken cancellationToken = default(CancellationToken))
{
var marshaller = new StartWorkflowExecutionRequestMarshaller();
var unmarshaller = StartWorkflowExecutionResponseUnmarshaller.GetInstance();
return Invoke<IRequest, StartWorkflowExecutionRequest, StartWorkflowExecutionResponse>(startWorkflowExecutionRequest, marshaller, unmarshaller, signer, cancellationToken);
}
/// <summary>
/// Starts an execution of the workflow type in the specified domain using the provided
/// <code>workflowId</code> and input data.
///
///
/// <para>
/// This action returns the newly started workflow execution.
/// </para>
///
/// <para>
/// <b>Access Control</b>
/// </para>
///
/// <para>
/// You can use IAM policies to control this action's access to Amazon SWF resources as
/// follows:
/// </para>
/// <ul> <li>Use a <code>Resource</code> element with the domain name to limit the action
/// to only specified domains.</li> <li>Use an <code>Action</code> element to allow or
/// deny permission to call this action.</li> <li>Constrain the following parameters by
/// using a <code>Condition</code> element with the appropriate keys. <ul> <li> <code>tagList.member.0</code>:
/// The key is <code>swf:tagList.member.0</code>.</li> <li> <code>tagList.member.1</code>:
/// The key is <code>swf:tagList.member.1</code>.</li> <li> <code>tagList.member.2</code>:
/// The key is <code>swf:tagList.member.2</code>.</li> <li> <code>tagList.member.3</code>:
/// The key is <code>swf:tagList.member.3</code>.</li> <li> <code>tagList.member.4</code>:
/// The key is <code>swf:tagList.member.4</code>.</li> <li> <code>taskList</code>: String
/// constraint. The key is <code>swf:taskList.name</code>.</li> <li> <code>name</code>:
/// String constraint. The key is <code>swf:workflowType.name</code>.</li> <li> <code>version</code>:
/// String constraint. The key is <code>swf:workflowType.version</code>.</li> </ul> </li>
/// </ul>
/// <para>
/// If the caller does not have sufficient permissions to invoke the action, or the parameter
/// values fall outside the specified constraints, the action fails by throwing <code>OperationNotPermitted</code>.
/// For details and example IAM policies, 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 StartWorkflowExecution service method.</param>
///
/// <returns>The response from the StartWorkflowExecution service method, as returned by SimpleWorkflow.</returns>
/// <exception cref="DefaultUndefinedException">
///
/// </exception>
/// <exception cref="LimitExceededException">
/// Returned by any operation if a system imposed limitation has been reached. To address
/// this fault you should either clean up unused resources or increase the limit by contacting
/// AWS.
/// </exception>
/// <exception cref="OperationNotPermittedException">
/// Returned when the caller does not have sufficient permissions to invoke the action.
/// </exception>
/// <exception cref="TypeDeprecatedException">
/// Returned when the specified activity or workflow type was already deprecated.
/// </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>
/// <exception cref="WorkflowExecutionAlreadyStartedException">
/// Returned by <a>StartWorkflowExecution</a> when an open execution with the same workflowId
/// is already running in the specified domain.
/// </exception>
public StartWorkflowExecutionResponse StartWorkflowExecution(StartWorkflowExecutionRequest request)
{
var marshaller = new StartWorkflowExecutionRequestMarshaller();
var unmarshaller = StartWorkflowExecutionResponseUnmarshaller.Instance;
return Invoke<StartWorkflowExecutionRequest,StartWorkflowExecutionResponse>(request, marshaller, unmarshaller);
}
/// <summary>
/// Initiates the asynchronous execution of the StartWorkflowExecution operation.
/// <seealso cref="Amazon.SimpleWorkflow.IAmazonSimpleWorkflow"/>
/// </summary>
///
/// <param name="request">Container for the necessary parameters to execute the StartWorkflowExecution 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<StartWorkflowExecutionResponse> StartWorkflowExecutionAsync(StartWorkflowExecutionRequest request, System.Threading.CancellationToken cancellationToken = default(CancellationToken))
{
var marshaller = new StartWorkflowExecutionRequestMarshaller();
var unmarshaller = StartWorkflowExecutionResponseUnmarshaller.Instance;
return InvokeAsync<StartWorkflowExecutionRequest,StartWorkflowExecutionResponse>(request, marshaller,
unmarshaller, cancellationToken);
}
/// <summary>
/// <para> Starts an execution of the workflow type in the specified domain using the provided <c>workflowId</c> and input data. </para>
/// <para>This action returns the newly started workflow execution.</para> <para> <b>Access Control</b> </para> <para>You can use IAM policies
/// to control this action's access to Amazon SWF resources as follows:</para>
/// <ul>
/// <li>Use a <c>Resource</c> element with the domain name to limit the action to only specified domains.</li>
/// <li>Use an <c>Action</c> element to allow or deny permission to call this action.</li>
/// <li>Constrain the following parameters by using a <c>Condition</c> element with the appropriate keys.
/// <ul>
/// <li> <c>tagList.member.0</c> : The key is <c>swf:tagList.member.0</c> .</li>
/// <li> <c>tagList.member.1</c> : The key is <c>swf:tagList.member.1</c> .</li>
/// <li> <c>tagList.member.2</c> : The key is <c>swf:tagList.member.2</c> .</li>
/// <li> <c>tagList.member.3</c> : The key is <c>swf:tagList.member.3</c> .</li>
/// <li> <c>tagList.member.4</c> : The key is <c>swf:tagList.member.4</c> .</li>
/// <li> <c>taskList</c> : String constraint. The key is <c>swf:taskList.name</c> .</li>
/// <li> <c>name</c> : String constraint. The key is <c>swf:workflowType.name</c> .</li>
/// <li> <c>version</c> : String constraint. The key is <c>swf:workflowType.version</c> .</li>
///
/// </ul>
/// </li>
///
/// </ul>
/// <para>If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified
/// constraints, the action fails by throwing <c>OperationNotPermitted</c> . For details and example IAM policies, 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="startWorkflowExecutionRequest">Container for the necessary parameters to execute the StartWorkflowExecution service method on
/// AmazonSimpleWorkflow.</param>
///
/// <returns>The response from the StartWorkflowExecution service method, as returned by AmazonSimpleWorkflow.</returns>
///
/// <exception cref="T:Amazon.SimpleWorkflow.Model.TypeDeprecatedException" />
/// <exception cref="T:Amazon.SimpleWorkflow.Model.OperationNotPermittedException" />
/// <exception cref="T:Amazon.SimpleWorkflow.Model.DefaultUndefinedException" />
/// <exception cref="T:Amazon.SimpleWorkflow.Model.UnknownResourceException" />
/// <exception cref="T:Amazon.SimpleWorkflow.Model.WorkflowExecutionAlreadyStartedException" />
/// <exception cref="T:Amazon.SimpleWorkflow.Model.LimitExceededException" />
/// <param name="cancellationToken">
/// A cancellation token that can be used by other objects or threads to receive notice of cancellation.
/// </param>
public async Task<StartWorkflowExecutionResponse> StartWorkflowExecutionAsync(StartWorkflowExecutionRequest startWorkflowExecutionRequest, CancellationToken cancellationToken = default(CancellationToken))
{
var marshaller = new StartWorkflowExecutionRequestMarshaller();
var unmarshaller = StartWorkflowExecutionResponseUnmarshaller.GetInstance();
var response = await Invoke<IRequest, StartWorkflowExecutionRequest, StartWorkflowExecutionResponse>(startWorkflowExecutionRequest, marshaller, unmarshaller, signer, cancellationToken)
.ConfigureAwait(continueOnCapturedContext: false);
return response;
}
/// <summary>
/// Initiates the asynchronous execution of the StartWorkflowExecution operation.
/// </summary>
///
/// <param name="request">Container for the necessary parameters to execute the StartWorkflowExecution 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 EndStartWorkflowExecution
/// operation.</returns>
public IAsyncResult BeginStartWorkflowExecution(StartWorkflowExecutionRequest request, AsyncCallback callback, object state)
{
var marshaller = new StartWorkflowExecutionRequestMarshaller();
var unmarshaller = StartWorkflowExecutionResponseUnmarshaller.Instance;
return BeginInvoke<StartWorkflowExecutionRequest>(request, marshaller, unmarshaller,
callback, state);
}
internal StartWorkflowExecutionResponse StartWorkflowExecution(StartWorkflowExecutionRequest request)
{
var task = StartWorkflowExecutionAsync(request);
try
{
return task.Result;
}
catch(AggregateException e)
{
throw e.InnerException;
}
}
private Amazon.SimpleWorkflow.Model.StartWorkflowExecutionResponse CallAWSServiceOperation(IAmazonSimpleWorkflow client, Amazon.SimpleWorkflow.Model.StartWorkflowExecutionRequest request)
{
Utils.Common.WriteVerboseEndpointMessage(this, client.Config, "AWS Simple Workflow Service (SWF)", "StartWorkflowExecution");
try
{
#if DESKTOP
return(client.StartWorkflowExecution(request));
#elif CORECLR
return(client.StartWorkflowExecutionAsync(request).GetAwaiter().GetResult());
#else
#error "Unknown build edition"
#endif
}
catch (AmazonServiceException exc)
{
var webException = exc.InnerException as System.Net.WebException;
if (webException != null)
{
throw new Exception(Utils.Common.FormatNameResolutionFailureMessage(client.Config, webException.Message), webException);
}
throw;
}
}
public object Execute(ExecutorContext context)
{
var cmdletContext = context as CmdletContext;
// create request
var request = new Amazon.SimpleWorkflow.Model.StartWorkflowExecutionRequest();
if (cmdletContext.ChildPolicy != null)
{
request.ChildPolicy = cmdletContext.ChildPolicy;
}
if (cmdletContext.Domain != null)
{
request.Domain = cmdletContext.Domain;
}
if (cmdletContext.ExecutionStartToCloseTimeout != null)
{
request.ExecutionStartToCloseTimeout = cmdletContext.ExecutionStartToCloseTimeout;
}
if (cmdletContext.Input != null)
{
request.Input = cmdletContext.Input;
}
if (cmdletContext.LambdaRole != null)
{
request.LambdaRole = cmdletContext.LambdaRole;
}
if (cmdletContext.TagList != null)
{
request.TagList = cmdletContext.TagList;
}
// populate TaskList
var requestTaskListIsNull = true;
request.TaskList = new Amazon.SimpleWorkflow.Model.TaskList();
System.String requestTaskList_taskList_Name = null;
if (cmdletContext.TaskList_Name != null)
{
requestTaskList_taskList_Name = cmdletContext.TaskList_Name;
}
if (requestTaskList_taskList_Name != null)
{
request.TaskList.Name = requestTaskList_taskList_Name;
requestTaskListIsNull = false;
}
// determine if request.TaskList should be set to null
if (requestTaskListIsNull)
{
request.TaskList = null;
}
if (cmdletContext.TaskPriority != null)
{
request.TaskPriority = cmdletContext.TaskPriority;
}
if (cmdletContext.TaskStartToCloseTimeout != null)
{
request.TaskStartToCloseTimeout = cmdletContext.TaskStartToCloseTimeout;
}
if (cmdletContext.WorkflowId != null)
{
request.WorkflowId = cmdletContext.WorkflowId;
}
// populate WorkflowType
var requestWorkflowTypeIsNull = true;
request.WorkflowType = new Amazon.SimpleWorkflow.Model.WorkflowType();
System.String requestWorkflowType_workflowType_Name = null;
if (cmdletContext.WorkflowType_Name != null)
{
requestWorkflowType_workflowType_Name = cmdletContext.WorkflowType_Name;
}
if (requestWorkflowType_workflowType_Name != null)
{
request.WorkflowType.Name = requestWorkflowType_workflowType_Name;
requestWorkflowTypeIsNull = false;
}
System.String requestWorkflowType_workflowType_Version = null;
if (cmdletContext.WorkflowType_Version != null)
{
requestWorkflowType_workflowType_Version = cmdletContext.WorkflowType_Version;
}
if (requestWorkflowType_workflowType_Version != null)
{
request.WorkflowType.Version = requestWorkflowType_workflowType_Version;
requestWorkflowTypeIsNull = false;
}
// determine if request.WorkflowType should be set to null
if (requestWorkflowTypeIsNull)
{
request.WorkflowType = null;
}
CmdletOutput output;
// issue call
var client = Client ?? CreateClient(_CurrentCredentials, _RegionEndpoint);
try
{
var response = CallAWSServiceOperation(client, request);
object pipelineOutput = null;
pipelineOutput = cmdletContext.Select(response, this);
output = new CmdletOutput
{
PipelineOutput = pipelineOutput,
ServiceResponse = response
};
}
catch (Exception e)
{
output = new CmdletOutput {
ErrorResponse = e
};
}
return(output);
}
/// <summary>
/// <para> Starts an execution of the workflow type in the specified domain using the provided <c>workflowId</c> and input data. </para> <para>
/// This action returns the newly started workflow execution. </para>
/// </summary>
///
/// <param name="startWorkflowExecutionRequest">Container for the necessary parameters to execute the StartWorkflowExecution service method on
/// AmazonSimpleWorkflow.</param>
///
/// <returns>The response from the StartWorkflowExecution service method, as returned by AmazonSimpleWorkflow.</returns>
///
/// <exception cref="TypeDeprecatedException"/>
/// <exception cref="OperationNotPermittedException"/>
/// <exception cref="DefaultUndefinedException"/>
/// <exception cref="UnknownResourceException"/>
/// <exception cref="WorkflowExecutionAlreadyStartedException"/>
/// <exception cref="LimitExceededException"/>
public StartWorkflowExecutionResponse StartWorkflowExecution(StartWorkflowExecutionRequest startWorkflowExecutionRequest)
{
IRequest<StartWorkflowExecutionRequest> request = new StartWorkflowExecutionRequestMarshaller().Marshall(startWorkflowExecutionRequest);
StartWorkflowExecutionResponse response = Invoke<StartWorkflowExecutionRequest, StartWorkflowExecutionResponse> (request, this.signer, StartWorkflowExecutionResponseUnmarshaller.GetInstance());
return response;
}
public static void Main(string[] args)
{
// Define the workflows that we know of that event processor will be handling
var workflows = new Dictionary<string, Type>
{
{"CustomerOrderWorkflow", typeof (CustomerOrderWorkflow)},
{"VerifyCustomerWorkflow", typeof (VerifyCustomerWorkflow)}
};
// Stopwatch to see how well we are performing
var stopwatch = new Stopwatch();
// We will use this ID as our decision task ID and activity task ID to identify ourselves when polling for
// decision and activity tasks.
var workflowWorkerIdentity = Guid.NewGuid();
// Print out our AWS SWF domains, workflows and activities
Console.Write(GetServiceOutput());
var loop = true;
do
{
// Our super simple application menu
Console.WriteLine("");
Console.WriteLine("=============");
Console.WriteLine("| Main Menu |");
Console.WriteLine("=============");
Console.WriteLine("[1] Submit a new workflow");
Console.WriteLine("[2] Wait for decide using a decision task");
Console.WriteLine("[3] Wait for and do some work for an activity task");
Console.WriteLine("[4] Quit");
Console.Write("\nChoice: ");
var key = Console.ReadLine();
if (String.IsNullOrEmpty(key))
{
continue;
}
switch (key)
{
// Initiate a workflow execution
case "1":
{
Console.WriteLine("Option [1] selected - Submit a new workflow");
// SWF client is disposable, so dispose it
using (var swfClient = new AmazonSimpleWorkflowClient(RegionEndpoint.USWest2))
{
// Our simple property bag: we just need to the email for the account
var propertyBag = new Dictionary<string, object> { { "SampleOrderNumber", "12345" } };
// Setup the workflow request
var workflowRequest = new StartWorkflowExecutionRequest
{
Domain = "demo-domain",
WorkflowId = Guid.NewGuid().ToString(),
WorkflowType = new WorkflowType
{
Name = "CustomerOrderWorkflow",
Version = "1.0"
},
Input = JsonConvert.SerializeObject(propertyBag)
};
try
{
// Call AWS SWF and submit the workflow request
swfClient.StartWorkflowExecution(workflowRequest);
}
catch (AmazonSimpleWorkflowException ex)
{
Console.WriteLine("Caught Exception: " + ex.Message);
Console.WriteLine("Response Status Code: " + ex.StatusCode);
Console.WriteLine("Error Code: " + ex.ErrorCode);
Console.WriteLine("Error Type: " + ex.ErrorType);
Console.WriteLine("Request ID: " + ex.RequestId);
Console.WriteLine("Data: " + ex.Data);
Console.WriteLine("Stacktrace: " + ex.StackTrace);
}
}
}
break;
// Poll for decision task
case "2":
{
Console.WriteLine("Option [2] selected - Wait for decide using a decision task");
Console.WriteLine("Waiting...");
// SWF client is disposable, so dispose it
using (var swfClient = new AmazonSimpleWorkflowClient(RegionEndpoint.USWest2))
{
try
{
// Setup the decision request
var decisionTaskRequest = new PollForDecisionTaskRequest
{
Domain = "demo-domain",
Identity = workflowWorkerIdentity.ToString(),
TaskList = new TaskList { Name = "DeciderTaskList-Default" }
};
// Call AWS SWF and wait for (default timeout: 60 secs) a decision task
var decisionTaskResponse = swfClient.PollForDecisionTask(decisionTaskRequest);
// Task token being an empty string means there are no tasks available and
// we are past the 60 seconds that AWS holds a connection in case a task
// becomes available. If this is the case, we simply retry.
var taskToken =
decisionTaskResponse.DecisionTask.TaskToken;
if (!String.IsNullOrEmpty(taskToken))
{
// We have a valid task, do something...
var decisionTask =
decisionTaskResponse.DecisionTask;
switch (decisionTask.WorkflowType.Name)
{
case "CustomerOrderWorkflow":
case "VerifyCustomerWorkflow":
{
Debug.Assert(decisionTask.WorkflowType.Version == "1.0");
}
break;
default:
Console.WriteLine("ERROR: Unknown workflow.");
break;
}
// Define a new WorkflowEventsProcessor object and let it make the decision!
stopwatch.Start();
var workflowProcessor = new WorkflowEventsProcessor(decisionTask, workflows, decisionTaskRequest, swfClient);
var decisionRequest = workflowProcessor.Decide();
stopwatch.Stop();
Console.WriteLine(">>> Decision(s) made in " + stopwatch.ElapsedMilliseconds + "ms");
// We have our decision, send it away and do something
// more productive with the response
swfClient.RespondDecisionTaskCompleted(decisionRequest);
}
}
catch (AmazonSimpleWorkflowException ex)
{
Console.WriteLine("Caught Exception: " + ex.Message);
Console.WriteLine("Response Status Code: " + ex.StatusCode);
Console.WriteLine("Error Code: " + ex.ErrorCode);
Console.WriteLine("Error Type: " + ex.ErrorType);
Console.WriteLine("Request ID: " + ex.RequestId);
Console.WriteLine("Data: " + ex.Data);
Console.WriteLine("Stacktrace: " + ex.StackTrace);
}
}
}
break;
// Poll for activity task
case "3":
{
Console.WriteLine("Option [3] selected - Wait for decide using a activity task");
Console.WriteLine("Waiting...");
// SWF client is disposable, so dispose it
using (var swfClient = new AmazonSimpleWorkflowClient(RegionEndpoint.USWest2))
{
try
{
// Setup the activity request
var activityTaskRequest = new PollForActivityTaskRequest
{
Domain = "demo-domain",
Identity = workflowWorkerIdentity.ToString(),
TaskList = new TaskList { Name = "ActivityTaskList-Default" }
};
// Call AWS SWF and wait for (default timeout: 60 secs) a activity task
var activityTaskResponse = swfClient.PollForActivityTask(activityTaskRequest);
// Task token being an empty string means there are no tasks available and
// we are past the 60 seconds that AWS holds a connection in case a task
// becomes available. If this is the case, we simply retry.
var taskToken =
activityTaskResponse.ActivityTask.TaskToken;
if (!String.IsNullOrEmpty(taskToken))
{
// We have a valid task, do something...
var activityTask =
activityTaskResponse.ActivityTask;
Console.WriteLine("\n");
Console.WriteLine(">>> Activity: " + activityTask.ActivityType.Name);
// In the real world we would define the activity code in a separate object
// and fire off a thread to actually work on it but in this case we are just
// testing the workflow so this suffices
switch (activityTask.ActivityType.Name)
{
// CustomerOrderWorkflow activities
case "VerifyOrder":
case "ShipOrder":
{
Debug.Assert(activityTask.ActivityType.Version == "1.0");
}
break;
// VerifyCustomerWorkflow activities
case "VerifyCustomerAddress":
case "CheckFraudDB":
case "ChargeCreditCard":
{
Debug.Assert(activityTask.ActivityType.Version == "1.0");
}
break;
default:
Console.WriteLine("ERROR: Unknown activity.");
break;
}
var activityCompletedRequest = new RespondActivityTaskCompletedRequest
{
TaskToken = activityTask.TaskToken,
Result = activityTask.Input
};
// Completion request setup complete, send it away. NOTE: Do something more
// productive with the response
swfClient.RespondActivityTaskCompleted(activityCompletedRequest);
//var activityFailedRequest = new RespondActivityTaskFailedRequest
// {
// TaskToken = activityTask.TaskToken,
// Details = "Test failure."
// };
//// Completion request setup complete, send it away. NOTE: Do something more
//// productive with the response
//swfClient.RespondActivityTaskFailed(activityFailedRequest);
}
}
catch (AmazonSimpleWorkflowException ex)
{
Console.WriteLine("Caught Exception: " + ex.Message);
Console.WriteLine("Response Status Code: " + ex.StatusCode);
Console.WriteLine("Error Code: " + ex.ErrorCode);
Console.WriteLine("Error Type: " + ex.ErrorType);
Console.WriteLine("Request ID: " + ex.RequestId);
Console.WriteLine("Data: " + ex.Data);
Console.WriteLine("Stacktrace: " + ex.StackTrace);
}
}
}
break;
case "4":
// Quit
loop = false;
break;
default:
Console.WriteLine("ERROR: Unknown command.");
break;
}
} while (loop);
}