103 lines
4.4 KiB
C#
103 lines
4.4 KiB
C#
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//------------------------------------------------------------
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//------------------------------------------------------------
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namespace System.ServiceModel.Dispatcher
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{
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using System.Workflow.Runtime;
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using System.Runtime.Diagnostics;
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using System.ServiceModel.Diagnostics;
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using System.Diagnostics;
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class WorkflowDurableInstance : DurableInstance
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{
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WorkflowOperationAsyncResult currentOperationInvocation;
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WorkflowInstanceContextProvider instanceContextProvider;
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bool shouldCreateNew = false;
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object thisLock = new object();
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WorkflowDefinitionContext workflowDefinition;
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WorkflowInstance workflowInstance = null;
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public WorkflowDurableInstance(WorkflowInstanceContextProvider instanceContextProvider, Guid instanceId, WorkflowDefinitionContext workflowDefinition, bool createNew)
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:
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base(instanceContextProvider, instanceId)
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{
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if (workflowDefinition == null)
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{
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throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("workflowDefinition");
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}
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this.workflowDefinition = workflowDefinition;
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this.shouldCreateNew = createNew;
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this.instanceContextProvider = instanceContextProvider;
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}
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public WorkflowOperationAsyncResult CurrentOperationInvocation
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{
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get
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{
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return this.currentOperationInvocation;
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}
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set
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{
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this.currentOperationInvocation = value;
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}
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}
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public WorkflowInstance GetWorkflowInstance(bool canCreateInstance)
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{
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if (this.workflowInstance == null)
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{
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lock (thisLock)
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{
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if (shouldCreateNew)
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{
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if (canCreateInstance)
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{
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this.workflowInstance = this.workflowDefinition.CreateWorkflow(this.InstanceId);
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shouldCreateNew = false;
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if (DiagnosticUtility.ShouldTraceInformation)
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{
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string traceText = SR.GetString(SR.TraceCodeWorkflowDurableInstanceActivated, InstanceId);
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TraceUtility.TraceEvent(TraceEventType.Information,
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TraceCode.WorkflowDurableInstanceActivated, traceText,
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new StringTraceRecord("DurableInstanceDetail", traceText),
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this, null);
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}
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using (new WorkflowDispatchContext(true, true))
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{
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this.workflowInstance.Start();
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}
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}
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else
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{
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//Make sure we clean up this InstanceContext;
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DurableErrorHandler.CleanUpInstanceContextAtOperationCompletion();
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//Inform InstanceLifeTimeManager to clean up record for InstanceId;
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if (this.instanceContextProvider.InstanceLifeTimeManager != null)
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{
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this.instanceContextProvider.InstanceLifeTimeManager.CleanUp(this.InstanceId);
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}
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throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new FaultException(new DurableDispatcherAddressingFault()));
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}
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}
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else
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{
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this.workflowInstance = this.workflowDefinition.WorkflowRuntime.GetWorkflow(InstanceId);
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if (DiagnosticUtility.ShouldTraceInformation)
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{
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string traceText = SR.GetString(SR.TraceCodeWorkflowDurableInstanceLoaded, InstanceId);
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TraceUtility.TraceEvent(TraceEventType.Information,
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TraceCode.WorkflowDurableInstanceLoaded, traceText,
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new StringTraceRecord("DurableInstanceDetail", traceText),
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this, null);
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}
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}
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}
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}
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return workflowInstance;
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}
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}
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}
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