/
FutureResponse.cs
executable file
·94 lines (84 loc) · 2.67 KB
/
FutureResponse.cs
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
using Apache.NMS.Stomp.Commands;
using System;
using System.Threading;
using Apache.NMS;
using Apache.NMS.Util;
namespace Apache.NMS.Stomp.Transport
{
/// <summary>
/// Handles asynchronous responses
/// </summary>
public class FutureResponse
{
private TimeSpan maxWait = TimeSpan.FromMilliseconds(Timeout.Infinite);
public TimeSpan ResponseTimeout
{
get { return maxWait; }
set { maxWait = value; }
}
private readonly CountDownLatch latch = new CountDownLatch(1);
private Response response;
public WaitHandle AsyncWaitHandle
{
get { return latch.AsyncWaitHandle; }
}
public Response Response
{
// Blocks the caller until a value has been set
get
{
lock(latch)
{
if(null != response)
{
return response;
}
}
try
{
if(!latch.await(maxWait) && response == null)
{
throw new RequestTimedOutException();
}
}
catch(RequestTimedOutException e)
{
Tracer.Error("Caught Timeout Exception while waiting on monitor: " + e);
throw;
}
catch(Exception e)
{
Tracer.Error("Caught Exception while waiting on monitor: " + e);
}
lock(latch)
{
return response;
}
}
set
{
lock(latch)
{
response = value;
}
latch.countDown();
}
}
}
}