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Default retry behavior inside saga #295

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Mar 31, 2019
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12 changes: 6 additions & 6 deletions src/WorkflowCore/Services/ExecutionResultProcessor.cs
Original file line number Diff line number Diff line change
Expand Up @@ -110,8 +110,8 @@ public void HandleStepException(WorkflowInstance workflow, WorkflowDefinition de
{
var exceptionPointer = queue.Dequeue();
var exceptionStep = def.Steps.FindById(exceptionPointer.StepId);
var compensatingStepId = FindScopeCompensationStepId(workflow, def, exceptionPointer);
var errorOption = (exceptionStep.ErrorBehavior ?? (compensatingStepId.HasValue ? WorkflowErrorHandling.Compensate : def.DefaultErrorBehavior));
var shouldCompensate = ShouldCompensate(workflow, def, exceptionPointer);
var errorOption = (exceptionStep.ErrorBehavior ?? (shouldCompensate ? WorkflowErrorHandling.Compensate : def.DefaultErrorBehavior));

foreach (var handler in _errorHandlers.Where(x => x.Type == errorOption))
{
Expand All @@ -120,7 +120,7 @@ public void HandleStepException(WorkflowInstance workflow, WorkflowDefinition de
}
}

private int? FindScopeCompensationStepId(WorkflowInstance workflow, WorkflowDefinition def, ExecutionPointer currentPointer)
private bool ShouldCompensate(WorkflowInstance workflow, WorkflowDefinition def, ExecutionPointer currentPointer)
{
var scope = new Stack<string>(currentPointer.Scope);
scope.Push(currentPointer.Id);
Expand All @@ -130,11 +130,11 @@ public void HandleStepException(WorkflowInstance workflow, WorkflowDefinition de
var pointerId = scope.Pop();
var pointer = workflow.ExecutionPointers.FindById(pointerId);
var step = def.Steps.FindById(pointer.StepId);
if (step.CompensationStepId.HasValue)
return step.CompensationStepId.Value;
if ((step.CompensationStepId.HasValue) || (step.RevertChildrenAfterCompensation))
return true;
}

return null;
return false;
}
}
}
Original file line number Diff line number Diff line change
Expand Up @@ -38,7 +38,7 @@ public int this[string propertyName]

public class DataIOWorkflow : IWorkflow<MyDataClass>
{
public string Id => "DataIOWorkflow";
public string Id => "DynamicDataIOWorkflow";
public int Version => 1;
public void Build(IWorkflowBuilder<MyDataClass> builder)
{
Expand Down
Original file line number Diff line number Diff line change
@@ -0,0 +1,65 @@
using System;
using System.Collections.Generic;
using System.Text;
using WorkflowCore.Interface;
using WorkflowCore.Models;
using Xunit;
using FluentAssertions;
using System.Linq;
using WorkflowCore.Testing;

namespace WorkflowCore.IntegrationTests.Scenarios
{
public class FailingSagaScenario : WorkflowTest<FailingSagaScenario.Workflow, object>
{
public class Workflow : IWorkflow<object>
{
public static int Event1Fired;
public static int Event2Fired;
public static int Event3Fired;

public string Id => "NestedRetrySaga2Workflow";
public int Version => 1;
public void Build(IWorkflowBuilder<object> builder)
{
builder
.StartWith(context => ExecutionResult.Next())
.Saga(x => x
.StartWith(context => ExecutionResult.Next())
.If(data => true)
.Do(i => i
.StartWith(context =>
{
Event1Fired++;
throw new Exception();
})
)
.Then(context => Event2Fired++)
)
.OnError(WorkflowErrorHandling.Terminate)
.Then(context => Event3Fired++);
}
}

public FailingSagaScenario()
{
Setup();
Workflow.Event1Fired = 0;
Workflow.Event2Fired = 0;
Workflow.Event3Fired = 0;
}

[Fact]
public void Scenario()
{
var workflowId = StartWorkflow(null);
WaitForWorkflowToComplete(workflowId, TimeSpan.FromSeconds(30));

GetStatus(workflowId).Should().Be(WorkflowStatus.Terminated);
UnhandledStepErrors.Count.Should().Be(1);
Workflow.Event1Fired.Should().Be(1);
Workflow.Event2Fired.Should().Be(0);
Workflow.Event3Fired.Should().Be(0);
}
}
}