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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 System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using Grpc.Core.Interceptors;
using Grpc.Core.Internal;
using Grpc.Core.Utils;
namespace Grpc.Core
{
/// <summary>
/// Mapping of method names to server call handlers.
/// Normally, the <c>ServerServiceDefinition</c> objects will be created by the <c>BindService</c> factory method
/// that is part of the autogenerated code for a protocol buffers service definition.
/// </summary>
public class ServerServiceDefinition
{
readonly ReadOnlyDictionary<string, IServerCallHandler> callHandlers;
internal ServerServiceDefinition(Dictionary<string, IServerCallHandler> callHandlers)
{
this.callHandlers = new ReadOnlyDictionary<string, IServerCallHandler>(callHandlers);
}
internal IDictionary<string, IServerCallHandler> CallHandlers
{
get
{
return this.callHandlers;
}
}
/// <summary>
/// Creates a new builder object for <c>ServerServiceDefinition</c>.
/// </summary>
/// <returns>The builder object.</returns>
public static Builder CreateBuilder()
{
return new Builder();
}
/// <summary>
/// Builder class for <see cref="ServerServiceDefinition"/>.
/// </summary>
public class Builder
{
readonly Dictionary<string, IServerCallHandler> callHandlers = new Dictionary<string, IServerCallHandler>();
/// <summary>
/// Creates a new instance of builder.
/// </summary>
public Builder()
{
}
/// <summary>
/// Adds a definition for a single request - single response method.
/// </summary>
/// <typeparam name="TRequest">The request message class.</typeparam>
/// <typeparam name="TResponse">The response message class.</typeparam>
/// <param name="method">The method.</param>
/// <param name="handler">The method handler.</param>
/// <returns>This builder instance.</returns>
public Builder AddMethod<TRequest, TResponse>(
Method<TRequest, TResponse> method,
UnaryServerMethod<TRequest, TResponse> handler)
where TRequest : class
where TResponse : class
{
callHandlers.Add(method.FullName, ServerCalls.UnaryCall(method, handler));
return this;
}
/// <summary>
/// Adds a definition for a client streaming method.
/// </summary>
/// <typeparam name="TRequest">The request message class.</typeparam>
/// <typeparam name="TResponse">The response message class.</typeparam>
/// <param name="method">The method.</param>
/// <param name="handler">The method handler.</param>
/// <returns>This builder instance.</returns>
public Builder AddMethod<TRequest, TResponse>(
Method<TRequest, TResponse> method,
ClientStreamingServerMethod<TRequest, TResponse> handler)
where TRequest : class
where TResponse : class
{
callHandlers.Add(method.FullName, ServerCalls.ClientStreamingCall(method, handler));
return this;
}
/// <summary>
/// Adds a definition for a server streaming method.
/// </summary>
/// <typeparam name="TRequest">The request message class.</typeparam>
/// <typeparam name="TResponse">The response message class.</typeparam>
/// <param name="method">The method.</param>
/// <param name="handler">The method handler.</param>
/// <returns>This builder instance.</returns>
public Builder AddMethod<TRequest, TResponse>(
Method<TRequest, TResponse> method,
ServerStreamingServerMethod<TRequest, TResponse> handler)
where TRequest : class
where TResponse : class
{
callHandlers.Add(method.FullName, ServerCalls.ServerStreamingCall(method, handler));
return this;
}
/// <summary>
/// Adds a definition for a bidirectional streaming method.
/// </summary>
/// <typeparam name="TRequest">The request message class.</typeparam>
/// <typeparam name="TResponse">The response message class.</typeparam>
/// <param name="method">The method.</param>
/// <param name="handler">The method handler.</param>
/// <returns>This builder instance.</returns>
public Builder AddMethod<TRequest, TResponse>(
Method<TRequest, TResponse> method,
DuplexStreamingServerMethod<TRequest, TResponse> handler)
where TRequest : class
where TResponse : class
{
callHandlers.Add(method.FullName, ServerCalls.DuplexStreamingCall(method, handler));
return this;
}
/// <summary>
/// Creates an immutable <c>ServerServiceDefinition</c> from this builder.
/// </summary>
/// <returns>The <c>ServerServiceDefinition</c> object.</returns>
public ServerServiceDefinition Build()
{
return new ServerServiceDefinition(callHandlers);
}
}
}
}
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