| /** |
| * 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 |
| * |
| * https://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 System; |
| using System.Collections.Generic; |
| using System.IO; |
| using System.Threading; |
| using Avro.IO; |
| |
| namespace Avro.ipc |
| { |
| public abstract class Transceiver |
| { |
| private readonly object channelLock = new object(); |
| private Thread threadWhenLocked; |
| |
| public virtual bool IsConnected |
| { |
| get { return false; } |
| } |
| |
| public abstract String RemoteName { get; } |
| |
| public virtual Protocol Remote |
| { |
| get { throw new InvalidOperationException("Not connected."); } |
| set { } |
| } |
| |
| public virtual IList<MemoryStream> Transceive(IList<MemoryStream> request) |
| { |
| if (request == null) throw new ArgumentNullException("request"); |
| |
| LockChannel(); |
| try |
| { |
| WriteBuffers(request); |
| return ReadBuffers(); |
| } |
| finally |
| { |
| UnlockChannel(); |
| } |
| } |
| |
| public virtual void VerifyConnection() |
| { |
| } |
| |
| public void Transceive(IList<MemoryStream> request, ICallback<IList<MemoryStream>> callback) |
| { |
| if (request == null) throw new ArgumentNullException("request"); |
| |
| try |
| { |
| IList<MemoryStream> response = Transceive(request); |
| callback.HandleResult(response); |
| } |
| catch (IOException e) |
| { |
| callback.HandleException(e); |
| } |
| } |
| |
| public void LockChannel() |
| { |
| Monitor.Enter(channelLock); |
| |
| threadWhenLocked = Thread.CurrentThread; |
| } |
| |
| public void UnlockChannel() |
| { |
| if (Thread.CurrentThread == threadWhenLocked) |
| { |
| Monitor.Exit(channelLock); |
| } |
| } |
| |
| public abstract IList<MemoryStream> ReadBuffers(); |
| public abstract void WriteBuffers(IList<MemoryStream> getBytes); |
| } |
| } |