public WorkflowTests()
{
_decisionTask = Substitute.For <DecisionTask>();
_decisionTask.WorkflowType = new WorkflowType {
Name = "TestWorkflow", Version = "TestVersion"
};
_decisionTask.WorkflowExecution = new WorkflowExecution {
RunId = "TestRunId", WorkflowId = ""
};
var results = new ConcurrentDictionary <int, string>();
results.AddOrUpdate(1, "TestResult", (index, value) => $"{value} - {index}");
_executionContext = WorkflowStateSerializer.Serialize(new WorkflowState()
{
CurrentStepNumber = 1,
NumberOfActions = 1,
Results = results
});
_pollforDecisionTaskRequest = Substitute.For <PollForDecisionTaskRequest>();
_pollforDecisionTaskRequest.Domain = "TestDomain";
_amazonSwf = Substitute.For <IAmazonSimpleWorkflow>();
_workflow = Substitute.For <WorkflowBase>("domain", _defaultWorkflowName, "version", "taskList", _amazonSwf);
}
public MakeDecisionTests()
{
_decisionTask = Substitute.For <DecisionTask>();
_decisionTask.WorkflowType = new WorkflowType {
Name = "TestWorkflow", Version = "TestVersion"
};
_decisionTask.WorkflowExecution = new WorkflowExecution {
RunId = "TestRunId", WorkflowId = ""
};
var results = new ConcurrentDictionary <int, string>();
results.AddOrUpdate(1, "TestResult", (key, value) => $"{key} - {value}");
WorkflowStateSerializer.Serialize(new WorkflowState()
{
CurrentStepNumber = 1,
NumberOfActions = 1,
Results = results
});
_pollforDecisionTaskRequest = Substitute.For <PollForDecisionTaskRequest>();
_pollforDecisionTaskRequest.Domain = "TestDomain";
_amazonSwf = Substitute.For <IAmazonSimpleWorkflow>();
_workflowBase = Substitute.For <WorkflowBase>("domain", "workflowName", "version", "taskList", _amazonSwf);
var describeWorkflowExecutionRequest = Substitute.For <DescribeWorkflowExecutionRequest>();
describeWorkflowExecutionRequest.Domain = _pollforDecisionTaskRequest.Domain;
describeWorkflowExecutionRequest.Execution = _decisionTask.WorkflowExecution;
}
/// <summary>
/// Initialize constructor parameters
/// </summary>
public WorkflowEventsProcessorConstructorTest()
{
_decisionTask = Substitute.For <DecisionTask>();
_pollforDecisionTaskRequest = Substitute.For <PollForDecisionTaskRequest>();
_amazonSwf = Substitute.For <IAmazonSimpleWorkflow>();
_workflowBase = Substitute.For <WorkflowBase>("domain", "workflowName", "version", "taskList", _amazonSwf);
}
ActivityTask startActivity(string runId)
{
var pollDeciderRequest = new PollForDecisionTaskRequest()
{
Domain = DOMAIN,
TaskList = TASKLIST,
Identity = "testdecider"
};
var pollDeciderResponse = Client.PollForDecisionTask(pollDeciderRequest);
var task = pollDeciderResponse.DecisionTask;
var respondRequest = new RespondDecisionTaskCompletedRequest()
{
TaskToken = task.TaskToken,
Decisions = new List <Decision>()
{
new Decision()
{
DecisionType = "ScheduleActivityTask",
ScheduleActivityTaskDecisionAttributes = new ScheduleActivityTaskDecisionAttributes()
{
ActivityType = ACTIVITY_TYPE,
ActivityId = DateTime.Now.Ticks.ToString(),
TaskList = TASKLIST
}
}
}
};
Client.RespondDecisionTaskCompleted(respondRequest);
return(pollActivity());
}
public WorkflowEventsIteratorTest()
{
_decisionTask = Substitute.For <DecisionTask>();
_pollforDecisionTaskRequest = Substitute.For <PollForDecisionTaskRequest>();
_amazonSwf = Substitute.For <IAmazonSimpleWorkflow>();
var workflowExecutionStartedEventAttributes = Substitute.For <WorkflowExecutionStartedEventAttributes>();
workflowExecutionStartedEventAttributes.Input = "Input";
var workflowExecutionCompletedEventAttributes = Substitute.For <WorkflowExecutionCompletedEventAttributes>();
workflowExecutionCompletedEventAttributes.Result = "Output";
var historyEvent1 = Substitute.For <HistoryEvent>();
historyEvent1.EventId = event1ID;
historyEvent1.WorkflowExecutionStartedEventAttributes = workflowExecutionStartedEventAttributes;
historyEvent1.EventType = EventType.WorkflowExecutionStarted;
var historyEvent2 = Substitute.For <HistoryEvent>();
historyEvent2.EventId = event2ID;
historyEvent2.WorkflowExecutionCompletedEventAttributes = Substitute.For <WorkflowExecutionCompletedEventAttributes>();
historyEvent2.EventType = EventType.ChildWorkflowExecutionCompleted;
_decisionTask.Events = new List <HistoryEvent>
{
historyEvent1,
historyEvent2
};
}
public override void Invoke(AWSCredentials creds, RegionEndpoint region, int maxItems)
{
AmazonSimpleWorkflowConfig config = new AmazonSimpleWorkflowConfig();
config.RegionEndpoint = region;
ConfigureClient(config);
AmazonSimpleWorkflowClient client = new AmazonSimpleWorkflowClient(creds, config);
DecisionTask resp = new DecisionTask();
do
{
PollForDecisionTaskRequest req = new PollForDecisionTaskRequest
{
NextPageToken = resp.NextPageToken
,
MaximumPageSize = maxItems
};
resp = client.PollForDecisionTask(req);
CheckError(resp.HttpStatusCode, "200");
foreach (var obj in resp.Events)
{
AddObject(obj);
}
}while (!string.IsNullOrEmpty(resp.NextPageToken));
}
/// <summary>
/// Retrieves the next page of history from
/// </summary>
/// <returns>The next page of history events.</returns>
private List <HistoryEvent> GetNextPage()
{
var request = new PollForDecisionTaskRequest {
Domain = _request.Domain,
NextPageToken = _lastResponse.NextPageToken,
TaskList = _request.TaskList,
MaximumPageSize = _request.MaximumPageSize
};
const int retryCount = 10;
int currentTry = 1;
bool pollFailed;
do
{
pollFailed = false;
try
{
_lastResponse = _swfClient.PollForDecisionTaskAsync(request).Result.DecisionTask;
}
catch (Exception ex)
{
Console.Error.WriteLine("Poll request failed with exception: " + ex);
pollFailed = true;
}
currentTry += 1;
} while (pollFailed && currentTry <= retryCount);
return(_lastResponse.Events);
}
/// <summary>
/// Constructor for the workflow event processor.
/// </summary>
/// <param name="decisionTask">Decision task passed in from SWF as decision task response.</param>
/// <param name="workflow">IEnumerable set of string for workflow name and Type for workflow class.</param>
/// <param name="request">The request used to retrieve <paramref name="decisionTask"/>, which will be used to retrieve subsequent history event pages.</param>
/// <param name="swfClient">An SWF client.</param>
public WorkflowEventsProcessor(DecisionTask decisionTask, WorkflowBase workflow, PollForDecisionTaskRequest request,
IAmazonSimpleWorkflow swfClient)
{
if (decisionTask == null)
{
throw new ArgumentNullException(nameof(decisionTask));
}
if (workflow == null)
{
throw new ArgumentNullException(nameof(workflow));
}
if (request == null)
{
throw new ArgumentNullException(nameof(request));
}
if (swfClient == null)
{
throw new ArgumentNullException(nameof(swfClient));
}
// Store the decision task and allocate a new decision context and event dictionary which
// we will use as we walk through the chain of events
_decisionTask = decisionTask;
_request = request;
_decisionContext = new WorkflowDecisionContext();
_swfClient = swfClient;
_workflow = workflow;
// Set up our events data structure.
Events = new WorkflowEventsIterator(ref decisionTask, _request, _swfClient);
}
/// <summary>
/// Initializes a new instance of the <see cref="WorkflowEventsIterator"/> class.
/// </summary>
/// <param name="decisionTask">Reference to the decision task passed in from </param>
/// <param name="request">The request used to retrieve <paramref name="decisionTask"/>, which will be used to retrieve subsequent history event pages.</param>
/// <param name="swfClient">An SWF client.</param>
public WorkflowEventsIterator(ref DecisionTask decisionTask, PollForDecisionTaskRequest request, IAmazonSimpleWorkflow swfClient)
{
_lastResponse = decisionTask;
_request = request;
_swfClient = swfClient;
_historyEvents = decisionTask.Events;
}
public WorkflowEventsProcessorTests()
{
_decisionTask = Substitute.For <DecisionTask>();
_decisionTask.WorkflowType = new WorkflowType {
Name = "TestWorkflow", Version = "TestVersion"
};
_decisionTask.WorkflowExecution = new WorkflowExecution {
RunId = "TestRunId", WorkflowId = ""
};
var results = new ConcurrentDictionary <int, string>();
results.AddOrUpdate(1, "TestResult", UpdateValueFactory);
_executionContext = WorkflowStateSerializer.Serialize(new WorkflowState()
{
CurrentStepNumber = 1,
NumberOfActions = 1,
Results = results
});
_pollforDecisionTaskRequest = Substitute.For <PollForDecisionTaskRequest>();
_pollforDecisionTaskRequest.Domain = "TestDomain";
_amazonSwf = Substitute.For <IAmazonSimpleWorkflow>();
_workflowBase = Substitute.For <WorkflowBase>("domain", "workflowName", "version", "taskList", _amazonSwf);
var describeWorkflowExecutionRequest = Substitute.For <DescribeWorkflowExecutionRequest>();
describeWorkflowExecutionRequest.Domain = _pollforDecisionTaskRequest.Domain;
describeWorkflowExecutionRequest.Execution = _decisionTask.WorkflowExecution;
//_amazonSwf.DescribeWorkflowExecution(describeWorkflowExecutionRequest)
// .ReturnsForAnyArgs(
// info =>
// new DescribeWorkflowExecutionResponse()
// {
// HttpStatusCode = HttpStatusCode.OK,
// WorkflowExecutionDetail = new WorkflowExecutionDetail() {LatestExecutionContext = _executionContext}
// });
SDK.Workflow.WorkflowEventsProcessor processor = Substitute.For <SDK.Workflow.WorkflowEventsProcessor>(_decisionTask, _workflowBase,
_pollforDecisionTaskRequest, _amazonSwf);
processor.GetLastExecContext().ReturnsForAnyArgs(info => WorkflowStateSerializer.Deserialize(_executionContext));
//_workflowEventsIterator = Substitute.For<WorkflowEventsIterator>(_decisionTask, _pollforDecisionTaskRequest,
// _amazonSwf);
}
DecisionTask Poll()
{
Logger.LogMessage("Polling for Decision task ...");
PollForDecisionTaskRequest request = new PollForDecisionTaskRequest()
{
Domain = Constants.SWF_DOMAIN,
TaskList = new TaskList()
{
Name = Constants.SWF_DECIDER_TASKLIST
}
};
PollForDecisionTaskResponse response = _swfClient.PollForDecisionTaskAsync(request).Result;
return(response.DecisionTask);
}
private async Task <DecisionTask> Poll()
{
this.EmrJobLogger.PrintInfo(SwfResources.Info_PollingDecisionTask);
PollForDecisionTaskRequest request = new PollForDecisionTaskRequest()
{
Domain = this.SwfConfiguration.DomainName,
TaskList = new TaskList()
{
Name = this.SwfConfiguration.DecisionTasksList
}
};
PollForDecisionTaskResponse response = await this.SwfClient.PollForDecisionTaskAsync(request);
return(response.DecisionTask);
}
/// <summary>
/// Constructor for the workflow event processor.
/// </summary>
/// <param name="decisionTask">Decision task passed in from SWF as decision task response.</param>
/// <param name="workflows">IEnumerable set of string for workflow name and Type for workflow class.</param>
/// <param name="request">The request used to retrieve <paramref name="decisionTask"/>, which will be used to retrieve subsequent history event pages.</param>
/// <param name="swfClient">An SWF client.</param>
public WorkflowEventsProcessor(DecisionTask decisionTask, IEnumerable <KeyValuePair <string, Type> > workflows, PollForDecisionTaskRequest request, IAmazonSimpleWorkflow swfClient)
{
// Decision task can't be null.
if (decisionTask == null)
{
throw new ArgumentNullException("decisionTask");
}
if (request == null)
{
throw new ArgumentNullException("request");
}
// Store the decision task and allocate a new decision context and event dictionary which
// we will use as we walk through the chain of events
_decisionTask = decisionTask;
_request = request;
_decisionContext = new WorkflowDecisionContext();
_swfClient = swfClient;
// Set up our events data structure
_events = new WorkflowEventsIterator(ref decisionTask, _request, _swfClient);
_workflows = (Dictionary <string, Type>)workflows;
}
public void Decider()
{
int activityCount = 0;
while (true)
{
Console.WriteLine("Decider: Polling for decision task ...");
PollForDecisionTaskRequest request = new PollForDecisionTaskRequest()
{
Domain = domainName,
TaskList = new TaskList()
{
Name = deciderPollingKey
}
};
PollForDecisionTaskResponse response = swfClient.PollForDecisionTaskAsync(request).Result;
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)
{
ScheduleActivity("Activity1", 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("Worflow Complete");
}
RespondDecisionTaskCompletedRequest respondDecisionTaskCompletedRequest =
new RespondDecisionTaskCompletedRequest()
{
Decisions = decisions,
TaskToken = response.DecisionTask.TaskToken
};
swfClient.RespondDecisionTaskCompletedAsync(respondDecisionTaskCompletedRequest);
}
}
protected override async Task <Workflow> GetCurrentContext()
{
Workflow workflow = null;
IList <Activity> activityList = new List <Activity>();
PollForDecisionTaskResponse decisionTaskResponse = null;
List <HistoryEvent> historyEvents = new List <HistoryEvent>();
string taskToken = null;
string nextPageToken = null;
do
{
var decisionTaskRequest = new PollForDecisionTaskRequest
{
Domain = Constants.LAMBDA_BIZ_DOMAIN,
Identity = Guid.NewGuid().ToString(),
TaskList = new TaskList
{
Name = Constants.LAMBDA_BIZ_TASK_LIST + _orchestrationId
},
NextPageToken = nextPageToken
};
decisionTaskResponse = await _amazonSimpleWorkflowClient.PollForDecisionTaskAsync(decisionTaskRequest);
taskToken = decisionTaskResponse.DecisionTask.TaskToken;
if (!string.IsNullOrEmpty(taskToken))
{
var decisionTask = decisionTaskResponse.DecisionTask;
foreach (HistoryEvent historyEvent in decisionTask.Events)
{
historyEvents.Add(historyEvent);
}
}
}while (!string.IsNullOrEmpty(nextPageToken = decisionTaskResponse.DecisionTask.NextPageToken));
if (historyEvents.Count > 0)
{
if (workflow == null)
{
workflow = new Workflow();
workflow.ReferenceToken = taskToken;
if (_store != null)
{
if (!await _store.StoreExistsAsync())
{
await _store.CreateStoreAsync();
}
}
}
foreach (HistoryEvent historyEvent in historyEvents)
{
if (historyEvent.EventType == EventType.WorkflowExecutionSignaled)
{
var activity = FindActivity(Model.ActivityType.Event, historyEvent.WorkflowExecutionSignaledEventAttributes.SignalName, activityList);
if (activity == null)
{
activity = new Activity
{
Result = historyEvent.WorkflowExecutionSignaledEventAttributes.Input,
Status = Status.SUCCEEDED,
ActivityType = Model.ActivityType.Event,
Name = historyEvent.WorkflowExecutionSignaledEventAttributes.SignalName,
ScheduledId = historyEvent.WorkflowExecutionSignaledEventAttributes.SignalName,
UniqueId = historyEvent.WorkflowExecutionSignaledEventAttributes.SignalName,
SucceededDateTime = historyEvent.EventTimestamp
};
activityList.Add(activity);
}
}
if (historyEvent.EventType == EventType.WorkflowExecutionStarted)
{
workflow.Status = Status.STARTED;
workflow.OrchestrationId =
historyEvent.WorkflowExecutionStartedEventAttributes.TaskList.Name.Replace(Constants.LAMBDA_BIZ_TASK_LIST, string.Empty);
workflow.StartedDateTime = historyEvent.EventTimestamp;
}
if (historyEvent.EventType == EventType.WorkflowExecutionFailed)
{
workflow.Status = Status.FAILED;
workflow.FailedDateTime = historyEvent.EventTimestamp;
}
if (historyEvent.EventType == EventType.WorkflowExecutionCompleted)
{
workflow.Status = Status.SUCCEEDED;
workflow.SucceededDateTime = historyEvent.EventTimestamp;
}
if (historyEvent.EventType == EventType.LambdaFunctionScheduled)
{
var activity = FindActivity(Model.ActivityType.Task, historyEvent.LambdaFunctionScheduledEventAttributes.Id.ToString(), activityList);
if (activity == null)
{
activity = new Activity
{
ActivityType = Model.ActivityType.Task,
Name = historyEvent.LambdaFunctionScheduledEventAttributes.Name,
ScheduledId = historyEvent.EventId.ToString(),
UniqueId = historyEvent.LambdaFunctionScheduledEventAttributes.Control,
Status = Status.SCHEDULED,
ScheduledDateTime = historyEvent.EventTimestamp
};
activityList.Add(activity);
}
}
if (historyEvent.EventType == EventType.StartLambdaFunctionFailed)
{
var activity = FindActivity(Model.ActivityType.Task, historyEvent.StartLambdaFunctionFailedEventAttributes.ScheduledEventId.ToString(), activityList);
activity.Result = historyEvent.StartLambdaFunctionFailedEventAttributes.Message;
activity.FailureDetails = historyEvent.StartLambdaFunctionFailedEventAttributes.Cause;
activity.Status = Status.FAILED;
activity.FailedDateTime = historyEvent.EventTimestamp;
}
if (historyEvent.EventType == EventType.LambdaFunctionStarted)
{
var activity = FindActivity(Model.ActivityType.Task, historyEvent.LambdaFunctionStartedEventAttributes.ScheduledEventId.ToString(), activityList);
activity.Status = Status.STARTED;
activity.StartedDateTime = historyEvent.EventTimestamp;
}
if (historyEvent.EventType == EventType.LambdaFunctionCompleted)
{
var activity = FindActivity(Model.ActivityType.Task, historyEvent.LambdaFunctionCompletedEventAttributes.ScheduledEventId.ToString(), activityList);
activity.Result = historyEvent.LambdaFunctionCompletedEventAttributes.Result;
activity.Status = Status.SUCCEEDED;
activity.SucceededDateTime = historyEvent.EventTimestamp;
}
if (historyEvent.EventType == EventType.LambdaFunctionFailed)
{
var activity = FindActivity(Model.ActivityType.Task, historyEvent.LambdaFunctionFailedEventAttributes.ScheduledEventId.ToString(), activityList);
activity.Result = historyEvent.LambdaFunctionFailedEventAttributes.Details;
activity.FailureDetails = historyEvent.LambdaFunctionFailedEventAttributes.Reason;
activity.Status = Status.FAILED;
activity.FailedDateTime = historyEvent.EventTimestamp;
}
if (historyEvent.EventType == EventType.LambdaFunctionTimedOut)
{
var activity = FindActivity(Model.ActivityType.Task, historyEvent.LambdaFunctionTimedOutEventAttributes.ScheduledEventId.ToString(), activityList);
activity.Status = Status.TIMEOUT;
activity.TmedOutDateTime = historyEvent.EventTimestamp;
}
if (historyEvent.EventType == EventType.TimerStarted)
{
var activity = new Activity
{
ActivityType = Model.ActivityType.Timer,
Name = historyEvent.TimerStartedEventAttributes.TimerId,
ScheduledId = historyEvent.EventId.ToString(),
UniqueId = historyEvent.TimerStartedEventAttributes.TimerId,
Status = Status.STARTED,
StartedDateTime = historyEvent.EventTimestamp
};
activityList.Add(activity);
}
if (historyEvent.EventType == EventType.TimerFired)
{
var activity = FindActivity(Model.ActivityType.Timer, historyEvent.TimerFiredEventAttributes.StartedEventId.ToString(), activityList);
activity.Status = Status.SUCCEEDED;
activity.SucceededDateTime = historyEvent.EventTimestamp;
}
if (historyEvent.EventType == EventType.ActivityTaskScheduled)
{
var activity = FindActivity(Model.ActivityType.Task, historyEvent.ActivityTaskScheduledEventAttributes.ActivityId, activityList);
if (activity == null)
{
activity = new Activity
{
ActivityType = Model.ActivityType.Task,
Name = historyEvent.ActivityTaskScheduledEventAttributes.ActivityType.Name,
ScheduledId = historyEvent.EventId.ToString(),
UniqueId = historyEvent.ActivityTaskScheduledEventAttributes.Control,
Status = Status.SCHEDULED,
ScheduledDateTime = historyEvent.EventTimestamp
};
activityList.Add(activity);
}
}
if (historyEvent.EventType == EventType.ActivityTaskStarted)
{
var activity = FindActivity(Model.ActivityType.Task, historyEvent.ActivityTaskStartedEventAttributes.ScheduledEventId.ToString(), activityList);
activity.Status = Status.STARTED;
activity.StartedDateTime = historyEvent.EventTimestamp;
}
if (historyEvent.EventType == EventType.ActivityTaskFailed)
{
var activity = FindActivity(Model.ActivityType.Task, historyEvent.ActivityTaskFailedEventAttributes.ScheduledEventId.ToString(), activityList);
activity.Result = historyEvent.ActivityTaskFailedEventAttributes.Details;
activity.Status = Status.FAILED;
activity.FailedDateTime = historyEvent.EventTimestamp;
}
if (historyEvent.EventType == EventType.ActivityTaskCompleted)
{
var activity = FindActivity(Model.ActivityType.Task, historyEvent.ActivityTaskCompletedEventAttributes.ScheduledEventId.ToString(), activityList);
activity.Result = historyEvent.ActivityTaskCompletedEventAttributes.Result;
activity.Status = Status.SUCCEEDED;
activity.SucceededDateTime = historyEvent.EventTimestamp;
}
if (historyEvent.EventType == EventType.ActivityTaskTimedOut)
{
var activity = FindActivity(Model.ActivityType.Task, historyEvent.ActivityTaskTimedOutEventAttributes.ScheduledEventId.ToString(), activityList);
activity.Status = Status.TIMEOUT;
activity.TmedOutDateTime = historyEvent.EventTimestamp;
}
}
workflow.Activities = activityList;
Task loggingTask = _store.LogStateAsync(workflow);
}
return(workflow);
}
/// <summary>
/// Constructor for the workflow event processor.
/// </summary>
/// <param name="decisionTask">Decision task passed in from SWF as decision task response.</param>
/// <param name="workflow">IEnumerable set of string for workflow name and Type for workflow class.</param>
/// <param name="request">The request used to retrieve <paramref name="decisionTask"/>, which will be used to retrieve subsequent history event pages.</param>
/// <param name="swfClient">An SWF client.</param>
/// <param name="storageManager">IStorageManager</param>
public WorkflowEventsProcessor(DecisionTask decisionTask, WorkflowBase workflow, PollForDecisionTaskRequest request,
IAmazonSimpleWorkflow swfClient, IStorageManager storageManager) : this(decisionTask, workflow, request, swfClient)
{
_storageClient = storageManager;
_decisionContext = new WorkflowDecisionContext(_storageClient);
}
/// <summary>
/// Polls for descision tasks and decides what decisions to make.
/// </summary>
internal void PollAndDecide()
{
Debug.Assert(_workflow != null);
while (!_cancellationToken.IsCancellationRequested)
{
var taskTolken = "";
try
{
var decisionTaskRequest = new PollForDecisionTaskRequest
{
Domain = _workflow.Options.Domain,
//Identity = _workflow.WorkflowId,
TaskList = _workflow.TaskList // This could be a specific TaskList instead of default value from context.
};
Logger.Debug("TaskList: {0}", _workflow.TaskList.Name);
PollForDecisionTaskResponse decisionTaskResponse = _swfClient.PollForDecisionTaskAsync(decisionTaskRequest).Result;
DecisionTask decisionTask = decisionTaskResponse.DecisionTask;
taskTolken = decisionTask.TaskToken;
if (!string.IsNullOrEmpty(decisionTask.TaskToken))
{
Logger.Debug("Get Decision.");
// Define a new WorkflowEventsProcessor object and let it make the decision!
var workflowProcessor = new WorkflowEventsProcessor(decisionTask, _workflow, decisionTaskRequest, _swfClient, _storageClient);
var decisionRequest = workflowProcessor.Decide();
//var decisionRequest = _workflow.Decide(decisionTask, decisionTaskRequest);
Logger.Debug("RespondDecisionTaskCompleted.");
// We have our decision, send it away and do something more productive with the response
_swfClient.RespondDecisionTaskCompletedAsync(decisionRequest).Wait();
}
//Sleep to avoid aggressive polling
Thread.Sleep(200);
}
/*catch (AmazonSimpleWorkflowException ex)
* {
* Logger.Error(ex, "");
*
* //if (_workflow != null)
* // _workflow.StopWorkers();
*
* //if (!string.IsNullOrEmpty(taskTolken))
* //{
* // var respond = _workflow.FailWorkflowRespond(ex.Message, "");
* // respond.TaskToken = taskTolken;
* // try
* // {
* // // Just try to stop workflow.
* // _swfClient.RespondDecisionTaskCompleted(respond);
* // }
* // catch
* // {
* // }
* //}
* //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);
* }*/
catch (Exception e)
{
Logger.Error(e, "");
//if (_workflow != null)
// _workflow.StopWorkers();
//if (!string.IsNullOrEmpty(taskTolken))
//{
// var respond = _workflow.FailWorkflowRespond(e.Message, "");
// respond.TaskToken = taskTolken;
// try
// {
// // Just try to stop workflow.
// _swfClient.RespondDecisionTaskCompleted(respond);
// }
// catch
// {
// }
//}
}
}
Logger.Info("Exit from Workflow Worker.");
}
public void TestPollDecider()
{
string workflowId = DateTime.Now.Ticks.ToString();
var startRequest = new StartWorkflowExecutionRequest()
{
Domain = DOMAIN,
WorkflowId = workflowId,
ChildPolicy = "TERMINATE",
TaskList = TASKLIST,
Input = "ImportantKeyId",
WorkflowType = WORKFLOW_TYPE
};
var startResponse = Client.StartWorkflowExecution(startRequest);
var pollDeciderRequest = new PollForDecisionTaskRequest()
{
Domain = DOMAIN,
TaskList = TASKLIST,
Identity = "testdecider"
};
var pollDeciderResponse = Client.PollForDecisionTask(pollDeciderRequest);
Assert.IsNotNull(pollDeciderResponse.DecisionTask);
Assert.IsTrue(pollDeciderResponse.DecisionTask.Events.Count > 0);
Assert.IsNotNull(pollDeciderResponse.DecisionTask.Events[0].EventId);
Assert.IsNotNull(pollDeciderResponse.DecisionTask.Events[0].EventType);
Assert.AreEqual(DateTime.Today, pollDeciderResponse.DecisionTask.Events[0].EventTimestamp.ToLocalTime().Date);
var task = pollDeciderResponse.DecisionTask;
var respondRequest = new RespondDecisionTaskCompletedRequest()
{
TaskToken = task.TaskToken,
Decisions = new List <Decision>()
{
new Decision()
{
DecisionType = "ScheduleActivityTask",
ScheduleActivityTaskDecisionAttributes = new ScheduleActivityTaskDecisionAttributes()
{
ActivityType = ACTIVITY_TYPE,
ActivityId = DateTime.Now.Ticks.ToString(),
TaskList = TASKLIST
}
}
}
};
Client.RespondDecisionTaskCompleted(respondRequest);
var pollActivityRequest = new PollForActivityTaskRequest()
{
Domain = DOMAIN,
TaskList = TASKLIST,
Identity = "testactivity"
};
var pollActivityResponse = Client.PollForActivityTask(pollActivityRequest);
Assert.IsNotNull(pollActivityResponse.ResponseMetadata.RequestId);
Assert.AreEqual(ACTIVITY_TYPE.Name, pollActivityResponse.ActivityTask.ActivityType.Name);
Assert.AreEqual(ACTIVITY_TYPE.Version, pollActivityResponse.ActivityTask.ActivityType.Version);
var signalRequest = new SignalWorkflowExecutionRequest()
{
Domain = DOMAIN,
RunId = startResponse.Run.RunId,
WorkflowId = startRequest.WorkflowId,
SignalName = "TestSignal"
};
var signalResponse = Client.SignalWorkflowExecution(signalRequest);
Assert.IsNotNull(signalResponse.ResponseMetadata.RequestId);
}
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);
}
// 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);
}
}
// 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
while (true)
{
Console.WriteLine("DECIDER: Polling for decision task ...");
var request = new PollForDecisionTaskRequest()
{
Domain = domainName,
TaskList = new TaskList()
{
Name = "SwfDemo"
}
};
var response = SwfDeciderClient.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}");
var 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)
{
var decision = new Decision()
{
DecisionType = DecisionType.CompleteWorkflowExecution,
CompleteWorkflowExecutionDecisionAttributes =
new CompleteWorkflowExecutionDecisionAttributes
{
Result = "{\"Result\":\"WF Complete!\"}"
}
};
decisions.Add(decision);
Console.WriteLine("DECIDER: WORKFLOW COMPLETE");
}
var respondDecisionTaskCompletedRequest =
new RespondDecisionTaskCompletedRequest()
{
Decisions = decisions,
TaskToken = response.DecisionTask.TaskToken
};
SwfDeciderClient.RespondDecisionTaskCompleted(respondDecisionTaskCompletedRequest);
}
}
