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#region Copyright notice and license
// Copyright 2015 gRPC authors.
//
// Licensed 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.
#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;
}
}
}
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