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|
//----------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//----------------------------------------------------------------
namespace System.ServiceModel.Activities
{
using System;
using System.Runtime;
using System.ServiceModel;
using System.ServiceModel.Activities.Dispatcher;
using System.ServiceModel.Channels;
// These are information passed from Send to Receive
class CorrelationRequestContext
{
AsyncWaitHandle receivedReplyEvent;
Exception exceptionOnReply;
public CorrelationRequestContext()
{
}
public OperationContext OperationContext
{
get;
set;
}
public Message Reply
{
get;
set;
}
public Exception Exception
{
get;
set;
}
public CorrelationKeyCalculator CorrelationKeyCalculator
{
get;
set;
}
public void EnsureAsyncWaitHandle()
{
this.receivedReplyEvent = new AsyncWaitHandle();
}
public bool TryGetReply()
{
if (this.exceptionOnReply != null)
{
throw FxTrace.Exception.AsError(this.exceptionOnReply);
}
return this.Reply != null;
}
public bool WaitForReplyAsync(Action<object, TimeoutException> onReceiveReply, object state)
{
Fx.Assert(this.receivedReplyEvent != null, "AsyncWaitHandle must be initialized before this point!");
if (TryGetReply())
{
return true;
}
return this.receivedReplyEvent.WaitAsync(onReceiveReply, state, TimeSpan.MaxValue);
}
// This is only called on the synchronous code path
public void ReceiveReply(OperationContext operationContext, Message reply)
{
this.OperationContext = operationContext;
this.Reply = reply;
}
// This is called on the async code path
public void ReceiveAsyncReply(OperationContext operationContext, Message reply, Exception replyException)
{
Fx.Assert(this.receivedReplyEvent != null, "AsyncWaitHandle must be initialized before this point!");
this.OperationContext = operationContext;
this.exceptionOnReply = replyException;
// NOTE: we make sure that this.Reply is set after the operation context since we
// pivot off of this fact in InternalReceiveMessage to optimize out an AsyncResult
// allocation. If you have more data to populate in ReceiveAsyncReply, then you need
// to make those assignments before we populate this.Reply
this.Reply = reply;
this.receivedReplyEvent.Set();
}
public void Cancel()
{
Fx.Assert(this.receivedReplyEvent != null, "AsyncWaitHandle must be initialized before this point!");
this.receivedReplyEvent.Set();
}
}
}
|
