Initial checkin of gRPC to third_party/

third_party/grpc/src/csharp/Grpc.Core/Method.cs

+#region Copyright notice and license
+
+// Copyright 2015-2016, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#endregion
+
+using System;
+using Grpc.Core.Utils;
+
+namespace Grpc.Core
+{
+    /// <summary>
+    /// Method types supported by gRPC.
+    /// </summary>
+    public enum MethodType
+    {
+        /// <summary>Single request sent from client, single response received from server.</summary>
+        Unary,
+
+        /// <summary>Stream of request sent from client, single response received from server.</summary>
+        ClientStreaming,
+
+        /// <summary>Single request sent from client, stream of responses received from server.</summary>
+        ServerStreaming,
+
+        /// <summary>Both server and client can stream arbitrary number of requests and responses simultaneously.</summary>
+        DuplexStreaming
+    }
+
+    /// <summary>
+    /// A non-generic representation of a remote method.
+    /// </summary>
+    public interface IMethod
+    {
+        /// <summary>
+        /// Gets the type of the method.
+        /// </summary>
+        MethodType Type { get; }
+
+        /// <summary>
+        /// Gets the name of the service to which this method belongs.
+        /// </summary>
+        string ServiceName { get; }
+
+        /// <summary>
+        /// Gets the unqualified name of the method.
+        /// </summary>
+        string Name { get; }
+
+        /// <summary>
+        /// Gets the fully qualified name of the method. On the server side, methods are dispatched
+        /// based on this name.
+        /// </summary>
+        string FullName { get; }
+    }
+
+    /// <summary>
+    /// A description of a remote method.
+    /// </summary>
+    /// <typeparam name="TRequest">Request message type for this method.</typeparam>
+    /// <typeparam name="TResponse">Response message type for this method.</typeparam>
+    public class Method<TRequest, TResponse> : IMethod
+    {
+        readonly MethodType type;
+        readonly string serviceName;
+        readonly string name;
+        readonly Marshaller<TRequest> requestMarshaller;
+        readonly Marshaller<TResponse> responseMarshaller;
+        readonly string fullName;
+
+        /// <summary>
+        /// Initializes a new instance of the <c>Method</c> class.
+        /// </summary>
+        /// <param name="type">Type of method.</param>
+        /// <param name="serviceName">Name of service this method belongs to.</param>
+        /// <param name="name">Unqualified name of the method.</param>
+        /// <param name="requestMarshaller">Marshaller used for request messages.</param>
+        /// <param name="responseMarshaller">Marshaller used for response messages.</param>
+        public Method(MethodType type, string serviceName, string name, Marshaller<TRequest> requestMarshaller, Marshaller<TResponse> responseMarshaller)
+        {
+            this.type = type;
+            this.serviceName = GrpcPreconditions.CheckNotNull(serviceName, "serviceName");
+            this.name = GrpcPreconditions.CheckNotNull(name, "name");
+            this.requestMarshaller = GrpcPreconditions.CheckNotNull(requestMarshaller, "requestMarshaller");
+            this.responseMarshaller = GrpcPreconditions.CheckNotNull(responseMarshaller, "responseMarshaller");
+            this.fullName = GetFullName(serviceName, name);
+        }
+
+        /// <summary>
+        /// Gets the type of the method.
+        /// </summary>
+        public MethodType Type
+        {
+            get
+            {
+                return this.type;
+            }
+        }
+            
+        /// <summary>
+        /// Gets the name of the service to which this method belongs.
+        /// </summary>
+        public string ServiceName
+        {
+            get
+            {
+                return this.serviceName;
+            }
+        }
+
+        /// <summary>
+        /// Gets the unqualified name of the method.
+        /// </summary>
+        public string Name
+        {
+            get
+            {
+                return this.name;
+            }
+        }
+
+        /// <summary>
+        /// Gets the marshaller used for request messages.
+        /// </summary>
+        public Marshaller<TRequest> RequestMarshaller
+        {
+            get
+            {
+                return this.requestMarshaller;
+            }
+        }
+
+        /// <summary>
+        /// Gets the marshaller used for response messages.
+        /// </summary>
+        public Marshaller<TResponse> ResponseMarshaller
+        {
+            get
+            {
+                return this.responseMarshaller;
+            }
+        }
+            
+        /// <summary>
+        /// Gets the fully qualified name of the method. On the server side, methods are dispatched
+        /// based on this name.
+        /// </summary>
+        public string FullName
+        {
+            get
+            {
+                return this.fullName;
+            }
+        }
+
+        /// <summary>
+        /// Gets full name of the method including the service name.
+        /// </summary>
+        internal static string GetFullName(string serviceName, string methodName)
+        {
+            return "/" + serviceName + "/" + methodName;
+        }
+    }
+}