Thrift: C# Bindings.

Summary:
C# generator, library, and MS Build task contributed by imeem.

Reviewed By: mcslee

Test Plan:
Built the Thrift compiler and generated some C# code.
I'd love to say I installed Mono or Portable.NET and built the C# code,
but I did not.

Revert Plan: ok


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@665421 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/csharp/src/Server/TServer.cs b/lib/csharp/src/Server/TServer.cs
new file mode 100644
index 0000000..3e70b11
--- /dev/null
+++ b/lib/csharp/src/Server/TServer.cs
@@ -0,0 +1,108 @@
+//
+//  TServer.cs
+//
+//  Begin:  Dec 3, 2007
+//  Authors: 
+//		Will Palmeri <wpalmeri@imeem.com>
+//
+//  Distributed under the Thrift Software License
+//
+//  See accompanying file LICENSE or visit the Thrift site at:
+//  http://developers.facebook.com/thrift/using
+
+using System;
+using System.Collections.Generic;
+using Thrift.Protocol;
+using Thrift.Transport;
+
+namespace Thrift.Server
+{
+	public abstract class TServer
+	{
+		/**
+		 * Core processor
+		 */
+		protected TProcessor processor;
+
+		/**
+		 * Server transport
+		 */
+		protected TServerTransport serverTransport;
+
+		/**
+		 * Input Transport Factory
+		 */
+		protected TTransportFactory inputTransportFactory;
+
+		/**
+		 * Output Transport Factory
+		 */
+		protected TTransportFactory outputTransportFactory;
+
+		/**
+		 * Input Protocol Factory
+		 */
+		protected TProtocolFactory inputProtocolFactory;
+
+		/**
+		 * Output Protocol Factory
+		 */
+		protected TProtocolFactory outputProtocolFactory;
+
+		/**
+		 * Default constructors.
+		 */
+
+		public TServer(TProcessor processor,
+						  TServerTransport serverTransport)
+			:this(processor, serverTransport, new TTransportFactory(), new TTransportFactory(), new TBinaryProtocol.Factory(), new TBinaryProtocol.Factory())
+		{
+		}
+
+		public TServer(TProcessor processor,
+						  TServerTransport serverTransport,
+						  TTransportFactory transportFactory)
+			:this(processor,
+				 serverTransport,
+				 transportFactory,
+				 transportFactory,
+				 new TBinaryProtocol.Factory(),
+				 new TBinaryProtocol.Factory())
+		{
+		}
+
+		public TServer(TProcessor processor,
+						  TServerTransport serverTransport,
+						  TTransportFactory transportFactory,
+						  TProtocolFactory protocolFactory)
+			:this(processor,
+				 serverTransport,
+				 transportFactory,
+				 transportFactory,
+				 protocolFactory,
+				 protocolFactory)
+		{
+		}
+
+		public TServer(TProcessor processor,
+						  TServerTransport serverTransport,
+						  TTransportFactory inputTransportFactory,
+						  TTransportFactory outputTransportFactory,
+						  TProtocolFactory inputProtocolFactory,
+						  TProtocolFactory outputProtocolFactory)
+		{
+			this.processor = processor;
+			this.serverTransport = serverTransport;
+			this.inputTransportFactory = inputTransportFactory;
+			this.outputTransportFactory = outputTransportFactory;
+			this.inputProtocolFactory = inputProtocolFactory;
+			this.outputProtocolFactory = outputProtocolFactory;
+		}
+
+		/**
+		 * The run method fires up the server and gets things going.
+		 */
+		public abstract void Serve();
+	}
+}
+
diff --git a/lib/csharp/src/Server/TSimpleServer.cs b/lib/csharp/src/Server/TSimpleServer.cs
new file mode 100644
index 0000000..c3461ef
--- /dev/null
+++ b/lib/csharp/src/Server/TSimpleServer.cs
@@ -0,0 +1,108 @@
+//
+//  TSimpleServer.cs
+//
+//  Begin:  Dec 3, 2007
+//  Authors: 
+//		Will Palmeri <wpalmeri@imeem.com>
+//
+//  Distributed under the Thrift Software License
+//
+//  See accompanying file LICENSE or visit the Thrift site at:
+//  http://developers.facebook.com/thrift/using
+using System;
+using System.Collections.Generic;
+using System.Text;
+using Thrift.Transport;
+using Thrift.Protocol;
+
+namespace Thrift.Server
+{
+	/// <summary>
+	/// Simple single-threaded server for testing
+	/// </summary>
+	class TSimpleServer : TServer
+	{
+		public TSimpleServer(TProcessor processor,
+						  TServerTransport serverTransport)
+			:base(processor, serverTransport, new TTransportFactory(), new TTransportFactory(), new TBinaryProtocol.Factory(), new TBinaryProtocol.Factory())
+		{
+		}
+
+		public TSimpleServer(TProcessor processor,
+						  TServerTransport serverTransport,
+						  TTransportFactory transportFactory)
+			:base(processor,
+				 serverTransport,
+				 transportFactory,
+				 transportFactory,
+				 new TBinaryProtocol.Factory(),
+				 new TBinaryProtocol.Factory())
+		{
+		}
+
+		public TSimpleServer(TProcessor processor,
+						  TServerTransport serverTransport,
+						  TTransportFactory transportFactory,
+						  TProtocolFactory protocolFactory)
+			:base(processor,
+				 serverTransport,
+				 transportFactory,
+				 transportFactory,
+				 protocolFactory,
+				 protocolFactory)
+		{
+		}
+
+		public override void Serve()
+		{
+			try
+			{
+				serverTransport.Listen();
+			}
+			catch (TTransportException ttx)
+			{
+				Console.Error.WriteLine(ttx);
+				return;
+			}
+
+			while (true)
+			{
+				TTransport client = null;
+				TTransport inputTransport = null;
+				TTransport outputTransport = null;
+				TProtocol inputProtocol = null;
+				TProtocol outputProtocol = null;
+				try
+				{
+					client = serverTransport.Accept();
+					if (client != null)
+					{
+						inputTransport = inputTransportFactory.GetTransport(client);
+						outputTransport = outputTransportFactory.GetTransport(client);
+						inputProtocol = inputProtocolFactory.GetProtocol(inputTransport);
+						outputProtocol = outputProtocolFactory.GetProtocol(outputTransport);
+						while (processor.Process(inputProtocol, outputProtocol)) { }
+					}
+				}
+				catch (TTransportException ttx)
+				{
+					// Client died, just move on
+				}
+				catch (Exception x)
+				{
+					Console.Error.WriteLine(x);
+				}
+
+				if (inputTransport != null)
+				{
+					inputTransport.Close();
+				}
+
+				if (outputTransport != null)
+				{
+					outputTransport.Close();
+				}
+			}
+		}
+	}
+}
diff --git a/lib/csharp/src/Server/TThreadPoolServer.cs b/lib/csharp/src/Server/TThreadPoolServer.cs
new file mode 100644
index 0000000..c42d348
--- /dev/null
+++ b/lib/csharp/src/Server/TThreadPoolServer.cs
@@ -0,0 +1,143 @@
+//
+//  TThreadPoolServer.cs
+//
+//  Begin:  Dec 3, 2007
+//  Authors: 
+//		Will Palmeri <wpalmeri@imeem.com>
+//
+//  Distributed under the Thrift Software License
+//
+//  See accompanying file LICENSE or visit the Thrift site at:
+//  http://developers.facebook.com/thrift/using
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Threading;
+using Thrift.Protocol;
+using Thrift.Transport;
+
+namespace Thrift.Server
+{
+	/// <summary>
+	/// Server that uses C# built-in ThreadPool to spawn threads when handling requests
+	/// </summary>
+	public class TThreadPoolServer : TServer
+	{
+		private const int DEFAULT_MIN_THREADS = 10;
+		private const int DEFAULT_MAX_THREADS = 100;
+
+		public TThreadPoolServer(TProcessor processor, TServerTransport serverTransport)
+			:this(processor, serverTransport,
+				 new TTransportFactory(), new TTransportFactory(),
+				 new TBinaryProtocol.Factory(), new TBinaryProtocol.Factory(),
+				 DEFAULT_MIN_THREADS, DEFAULT_MAX_THREADS)
+		{
+		}
+
+		public TThreadPoolServer(TProcessor processor,
+								 TServerTransport serverTransport,
+								 TTransportFactory transportFactory,
+								 TProtocolFactory protocolFactory)
+			:this(processor, serverTransport,
+				 transportFactory, transportFactory,
+				 protocolFactory, protocolFactory,
+				 DEFAULT_MIN_THREADS, DEFAULT_MAX_THREADS)
+		{
+		}
+
+		public TThreadPoolServer(TProcessor processor,
+								 TServerTransport serverTransport,
+								 TTransportFactory inputTransportFactory,
+								 TTransportFactory outputTransportFactory,
+								 TProtocolFactory inputProtocolFactory,
+								 TProtocolFactory outputProtocolFactory,
+								 int minThreadPoolThreads, int maxThreadPoolThreads)
+			:base(processor, serverTransport, inputTransportFactory, outputTransportFactory,
+				  inputProtocolFactory, outputProtocolFactory)
+		{
+			if (!ThreadPool.SetMinThreads(minThreadPoolThreads, minThreadPoolThreads))
+			{
+				throw new Exception("Error: could not SetMinThreads in ThreadPool");
+			}
+			if (!ThreadPool.SetMaxThreads(maxThreadPoolThreads, maxThreadPoolThreads))
+			{
+				throw new Exception("Error: could not SetMaxThreads in ThreadPool");
+			}
+
+		}
+
+		/// <summary>
+		/// Use new ThreadPool thread for each new client connection
+		/// </summary>
+		public override void Serve()
+		{
+			try
+			{
+				serverTransport.Listen();
+			}
+			catch (TTransportException ttx)
+			{
+				Console.Error.WriteLine("Error, could not listen on ServerTransport: " + ttx);
+				return;
+			}
+
+			while (true)
+			{
+				int failureCount = 0;
+				try
+				{
+					TTransport client = serverTransport.Accept();
+					ThreadPool.QueueUserWorkItem(this.Execute, client);
+				}
+				catch (TTransportException ttx)
+				{
+					++failureCount;
+					Console.Error.WriteLine(ttx);
+				}
+			}
+		}
+
+		/// <summary>
+		/// Loops on processing a client forever
+		/// threadContext will be a TTransport instance
+		/// </summary>
+		/// <param name="threadContext"></param>
+		private void Execute(Object threadContext)
+		{
+			TTransport client = (TTransport)threadContext;
+			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 ttx)
+			{
+				// Assume the client died and continue silently
+			}
+			
+			catch (Exception x)
+			{
+				Console.Error.WriteLine("Error: " + x);
+			}
+
+			if (inputTransport != null)
+			{
+				inputTransport.Close();
+			}
+			if (outputTransport != null)
+			{
+				outputTransport.Close();
+			}
+		}
+	}
+}