| /* |
| * 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.ActiveMQ.Commands; |
| using System; |
| using System.Threading; |
| using Apache.NMS; |
| using Apache.NMS.Util; |
| |
| namespace Apache.NMS.ActiveMQ.Transport |
| { |
| /// <summary> |
| /// Handles asynchronous responses |
| /// </summary> |
| public class FutureResponse |
| { |
| private static 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 |
| { |
| bool waitForResponse = false; |
| |
| lock(latch) |
| { |
| if(null == response) |
| { |
| waitForResponse = true; |
| } |
| } |
| |
| if(waitForResponse) |
| { |
| try |
| { |
| if(!latch.await(maxWait)) |
| { |
| // TODO: Throw timeout exception? |
| } |
| } |
| catch (Exception e) |
| { |
| Tracer.Error("Caught while waiting on monitor: " + e); |
| } |
| } |
| |
| lock(latch) |
| { |
| return response; |
| } |
| } |
| |
| set |
| { |
| lock(latch) |
| { |
| response = value; |
| } |
| |
| latch.countDown(); |
| } |
| } |
| } |
| } |
| |