| #region Copyright notice and license |
| |
| // Copyright 2018 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.Interceptors |
| { |
| /// <summary> |
| /// Decorates an underlying <see cref="Grpc.Core.CallInvoker" /> to |
| /// intercept calls through a given interceptor. |
| /// </summary> |
| internal class InterceptingCallInvoker : CallInvoker |
| { |
| readonly CallInvoker invoker; |
| readonly Interceptor interceptor; |
| |
| /// <summary> |
| /// Creates a new instance of <see cref="Grpc.Core.Interceptors.InterceptingCallInvoker" /> |
| /// with the given underlying invoker and interceptor instances. |
| /// </summary> |
| public InterceptingCallInvoker(CallInvoker invoker, Interceptor interceptor) |
| { |
| this.invoker = GrpcPreconditions.CheckNotNull(invoker, nameof(invoker)); |
| this.interceptor = GrpcPreconditions.CheckNotNull(interceptor, nameof(interceptor)); |
| } |
| |
| /// <summary> |
| /// Intercepts a simple blocking call with the registered interceptor. |
| /// </summary> |
| public override TResponse BlockingUnaryCall<TRequest, TResponse>(Method<TRequest, TResponse> method, string host, CallOptions options, TRequest request) |
| { |
| return interceptor.BlockingUnaryCall( |
| request, |
| new ClientInterceptorContext<TRequest, TResponse>(method, host, options), |
| (req, ctx) => invoker.BlockingUnaryCall(ctx.Method, ctx.Host, ctx.Options, req)); |
| } |
| |
| /// <summary> |
| /// Intercepts a simple asynchronous call with the registered interceptor. |
| /// </summary> |
| public override AsyncUnaryCall<TResponse> AsyncUnaryCall<TRequest, TResponse>(Method<TRequest, TResponse> method, string host, CallOptions options, TRequest request) |
| { |
| return interceptor.AsyncUnaryCall( |
| request, |
| new ClientInterceptorContext<TRequest, TResponse>(method, host, options), |
| (req, ctx) => invoker.AsyncUnaryCall(ctx.Method, ctx.Host, ctx.Options, req)); |
| } |
| |
| /// <summary> |
| /// Intercepts an asynchronous server streaming call with the registered interceptor. |
| /// </summary> |
| public override AsyncServerStreamingCall<TResponse> AsyncServerStreamingCall<TRequest, TResponse>(Method<TRequest, TResponse> method, string host, CallOptions options, TRequest request) |
| { |
| return interceptor.AsyncServerStreamingCall( |
| request, |
| new ClientInterceptorContext<TRequest, TResponse>(method, host, options), |
| (req, ctx) => invoker.AsyncServerStreamingCall(ctx.Method, ctx.Host, ctx.Options, req)); |
| } |
| |
| /// <summary> |
| /// Intercepts an asynchronous client streaming call with the registered interceptor. |
| /// </summary> |
| public override AsyncClientStreamingCall<TRequest, TResponse> AsyncClientStreamingCall<TRequest, TResponse>(Method<TRequest, TResponse> method, string host, CallOptions options) |
| { |
| return interceptor.AsyncClientStreamingCall( |
| new ClientInterceptorContext<TRequest, TResponse>(method, host, options), |
| ctx => invoker.AsyncClientStreamingCall(ctx.Method, ctx.Host, ctx.Options)); |
| } |
| |
| /// <summary> |
| /// Intercepts an asynchronous duplex streaming call with the registered interceptor. |
| /// </summary> |
| public override AsyncDuplexStreamingCall<TRequest, TResponse> AsyncDuplexStreamingCall<TRequest, TResponse>(Method<TRequest, TResponse> method, string host, CallOptions options) |
| { |
| return interceptor.AsyncDuplexStreamingCall( |
| new ClientInterceptorContext<TRequest, TResponse>(method, host, options), |
| ctx => invoker.AsyncDuplexStreamingCall(ctx.Method, ctx.Host, ctx.Options)); |
| } |
| } |
| } |