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//------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//------------------------------------------------------------
namespace System.ServiceModel.Dispatcher
{
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Diagnostics.CodeAnalysis;
using System.IdentityModel.Policy;
using System.Runtime;
using System.Runtime.Diagnostics;
using System.Runtime.Serialization;
using System.ServiceModel.Diagnostics;
using System.ServiceModel.Security;
using System.Diagnostics;
[Serializable]
class WorkflowRequestContext
{
[NonSerialized]
WorkflowOperationAsyncResult asyncResult;
[NonSerialized]
AuthorizationContext authorizationContext;
IDictionary<string, string> contextProperties;
ReadOnlyCollection<object> inputs;
[NonSerialized]
OperationContext operationContext;
SerializableAuthorizationContext serializedAuthorizationContext;
public WorkflowRequestContext(WorkflowOperationAsyncResult asyncResult, object[] inputs, IDictionary<string, string> contextProperties)
{
if (asyncResult == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("asyncResult");
}
if (inputs == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("inputs");
}
this.asyncResult = asyncResult;
this.inputs = new ReadOnlyCollection<object>(inputs);
this.contextProperties = contextProperties ?? SerializableReadOnlyDictionary<string, string>.Empty;
this.operationContext = OperationContext.Current;
}
public AuthorizationContext AuthorizationContext
{
get
{
if (this.authorizationContext == null)
{
if (this.serializedAuthorizationContext != null)
{
this.authorizationContext = serializedAuthorizationContext.Retrieve();
}
}
return authorizationContext;
}
}
public IDictionary<string, string> ContextProperties
{
get
{
return this.contextProperties;
}
}
public ReadOnlyCollection<object> Inputs
{
get
{
return this.inputs;
}
}
public void PopulateAuthorizationState()
{
if (OperationContext.Current == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR2.GetString(SR2.NoOperationContext)));
}
if (OperationContext.Current.ServiceSecurityContext != null)
{
this.authorizationContext = OperationContext.Current.ServiceSecurityContext.AuthorizationContext;
}
}
public void SendFault(Exception exception, IDictionary<string, string> outgoingContextProperties)
{
if (exception == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("exception");
}
if (!(exception is FaultException)) //Wrap the exception if it is not FaultException.
{
exception = WorkflowOperationErrorHandler.CreateUnhandledException(exception);
}
WorkflowOperationAsyncResult asyncResult = this.GetAsyncResult();
asyncResult.SendFault(exception, outgoingContextProperties);
this.SetOperationCompleted();
if (DiagnosticUtility.ShouldTraceInformation)
{
string traceText = SR.GetString(SR.TraceCodeWorkflowRequestContextFaultSent, asyncResult.InstanceId);
TraceUtility.TraceEvent(TraceEventType.Information,
TraceCode.WorkflowRequestContextFaultSent, traceText,
new StringTraceRecord("Details", traceText),
this,
exception);
}
}
public void SendReply(object returnValue, object[] outputs, IDictionary<string, string> outgoingContextProperties)
{
if (outputs == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("outputs");
}
WorkflowOperationAsyncResult asyncResult = this.GetAsyncResult();
asyncResult.SendResponse(returnValue, outputs, outgoingContextProperties);
this.SetOperationCompleted();
if (DiagnosticUtility.ShouldTraceVerbose)
{
string traceText = SR.GetString(SR.TraceCodeWorkflowRequestContextReplySent, asyncResult.InstanceId);
TraceUtility.TraceEvent(TraceEventType.Verbose,
TraceCode.WorkflowRequestContextReplySent, traceText,
new StringTraceRecord("Details", traceText),
this, null);
}
}
public void SetOperationCompleted()
{
OperationContext.Current = this.operationContext;
try
{
this.GetAsyncResult().MarkOneWayOperationCompleted();
}
catch (Exception e)
{
if (Fx.IsFatal(e))
{
throw;
}
//For Two-ways it is no-op; For One-ways make it fire & forget.
}
}
internal WorkflowOperationAsyncResult GetAsyncResult()
{
if (this.asyncResult == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR2.GetString(SR2.UnloadedBeforeResponse)));
}
return asyncResult;
}
//To be called by dispatcher before EnqueueItemOnIdle.
internal void SetOperationBegin()
{
OperationContext current = OperationContext.Current;
OperationContext.Current = this.operationContext;
this.operationContext = current;
}
[OnSerializing]
[SuppressMessage("Microsoft.Usage", "CA1801:ReviewUnusedParameters")]
void OnSerializing(StreamingContext context)
{
if (this.serializedAuthorizationContext == null)
{
if (this.authorizationContext != null)
{
this.serializedAuthorizationContext = SerializableAuthorizationContext.From(this.authorizationContext);
}
}
if (this.asyncResult != null)
{
// Serialization time is the only reasonable hook point to determine that the workflow
// is not going to be able to send back a response (because asyncResult does not serialize).
// Setting this flag on the async result enables the logic in WorkflowInstanceContextProvider.OnWorkflowActivationCompleted
// to complete the operation from service model's perspective.
this.asyncResult.HasWorkflowRequestContextBeenSerialized = true;
}
}
}
}
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