Thrift now a TLP - INFRA-3116
git-svn-id: https://svn.apache.org/repos/asf/thrift/branches/0.1.x@1028168 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/csharp/src/Server/TThreadedServer.cs b/lib/csharp/src/Server/TThreadedServer.cs
new file mode 100644
index 0000000..75206f1
--- /dev/null
+++ b/lib/csharp/src/Server/TThreadedServer.cs
@@ -0,0 +1,234 @@
+/**
+ * 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 System;
+using System.Collections.Generic;
+using System.Threading;
+using Thrift.Collections;
+using Thrift.Protocol;
+using Thrift.Transport;
+
+namespace Thrift.Server
+{
+ /// <summary>
+ /// Server that uses C# threads (as opposed to the ThreadPool) when handling requests
+ /// </summary>
+ public class TThreadedServer : TServer
+ {
+ private const int DEFAULT_MAX_THREADS = 100;
+ private volatile bool stop = false;
+ private readonly int maxThreads;
+
+ private Queue<TTransport> clientQueue;
+ private THashSet<Thread> clientThreads;
+ private object clientLock;
+ private Thread workerThread;
+
+ public TThreadedServer(TProcessor processor, TServerTransport serverTransport)
+ : this(processor, serverTransport,
+ new TTransportFactory(), new TTransportFactory(),
+ new TBinaryProtocol.Factory(), new TBinaryProtocol.Factory(),
+ DEFAULT_MAX_THREADS, DefaultLogDelegate)
+ {
+ }
+
+ public TThreadedServer(TProcessor processor, TServerTransport serverTransport, LogDelegate logDelegate)
+ : this(processor, serverTransport,
+ new TTransportFactory(), new TTransportFactory(),
+ new TBinaryProtocol.Factory(), new TBinaryProtocol.Factory(),
+ DEFAULT_MAX_THREADS, logDelegate)
+ {
+ }
+
+
+ public TThreadedServer(TProcessor processor,
+ TServerTransport serverTransport,
+ TTransportFactory transportFactory,
+ TProtocolFactory protocolFactory)
+ : this(processor, serverTransport,
+ transportFactory, transportFactory,
+ protocolFactory, protocolFactory,
+ DEFAULT_MAX_THREADS, DefaultLogDelegate)
+ {
+ }
+
+ public TThreadedServer(TProcessor processor,
+ TServerTransport serverTransport,
+ TTransportFactory inputTransportFactory,
+ TTransportFactory outputTransportFactory,
+ TProtocolFactory inputProtocolFactory,
+ TProtocolFactory outputProtocolFactory,
+ int maxThreads, LogDelegate logDel)
+ : base(processor, serverTransport, inputTransportFactory, outputTransportFactory,
+ inputProtocolFactory, outputProtocolFactory, logDel)
+ {
+ this.maxThreads = maxThreads;
+ clientQueue = new Queue<TTransport>();
+ clientLock = new object();
+ clientThreads = new THashSet<Thread>();
+ }
+
+ /// <summary>
+ /// Use new Thread for each new client connection. block until numConnections < maxTHreads
+ /// </summary>
+ public override void Serve()
+ {
+ try
+ {
+ //start worker thread
+ workerThread = new Thread(new ThreadStart(Execute));
+ workerThread.Start();
+ serverTransport.Listen();
+ }
+ catch (TTransportException ttx)
+ {
+ logDelegate("Error, could not listen on ServerTransport: " + ttx);
+ return;
+ }
+
+ while (!stop)
+ {
+ int failureCount = 0;
+ try
+ {
+ TTransport client = serverTransport.Accept();
+ lock (clientLock)
+ {
+ clientQueue.Enqueue(client);
+ Monitor.Pulse(clientLock);
+ }
+ }
+ catch (TTransportException ttx)
+ {
+ if (stop)
+ {
+ logDelegate("TThreadPoolServer was shutting down, caught " + ttx);
+ }
+ else
+ {
+ ++failureCount;
+ logDelegate(ttx.ToString());
+ }
+
+ }
+ }
+
+ if (stop)
+ {
+ try
+ {
+ serverTransport.Close();
+ }
+ catch (TTransportException ttx)
+ {
+ logDelegate("TServeTransport failed on close: " + ttx.Message);
+ }
+ stop = false;
+ }
+ }
+
+ /// <summary>
+ /// Loops on processing a client forever
+ /// threadContext will be a TTransport instance
+ /// </summary>
+ /// <param name="threadContext"></param>
+ private void Execute()
+ {
+ while (!stop)
+ {
+ TTransport client;
+ Thread t;
+ lock (clientLock)
+ {
+ //don't dequeue if too many connections
+ while (clientThreads.Count >= maxThreads)
+ {
+ Monitor.Wait(clientLock);
+ }
+
+ while (clientQueue.Count == 0)
+ {
+ Monitor.Wait(clientLock);
+ }
+
+ client = clientQueue.Dequeue();
+ t = new Thread(new ParameterizedThreadStart(ClientWorker));
+ clientThreads.Add(t);
+ }
+ //start processing requests from client on new thread
+ t.Start(client);
+ }
+ }
+
+ private void ClientWorker(Object context)
+ {
+ TTransport client = (TTransport)context;
+ TTransport inputTransport = null;
+ TTransport outputTransport = null;
+ TProtocol inputProtocol = null;
+ TProtocol outputProtocol = null;
+ try
+ {
+ inputTransport = inputTransportFactory.GetTransport(client);
+ outputTransport = outputTransportFactory.GetTransport(client);
+ inputProtocol = inputProtocolFactory.GetProtocol(inputTransport);
+ outputProtocol = outputProtocolFactory.GetProtocol(outputTransport);
+ while (processor.Process(inputProtocol, outputProtocol))
+ {
+ //keep processing requests until client disconnects
+ }
+ }
+ catch (TTransportException)
+ {
+ }
+ catch (Exception x)
+ {
+ logDelegate("Error: " + x);
+ }
+
+ if (inputTransport != null)
+ {
+ inputTransport.Close();
+ }
+ if (outputTransport != null)
+ {
+ outputTransport.Close();
+ }
+
+ lock (clientLock)
+ {
+ clientThreads.Remove(Thread.CurrentThread);
+ Monitor.Pulse(clientLock);
+ }
+ return;
+ }
+
+ public override void Stop()
+ {
+ stop = true;
+ serverTransport.Close();
+ //clean up all the threads myself
+ workerThread.Abort();
+ foreach (Thread t in clientThreads)
+ {
+ t.Abort();
+ }
+ }
+ }
+}