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Diffstat (limited to 'src/csharp/Grpc.Core/Interceptors/InterceptingCallInvoker.cs')
-rw-r--r-- | src/csharp/Grpc.Core/Interceptors/InterceptingCallInvoker.cs | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/src/csharp/Grpc.Core/Interceptors/InterceptingCallInvoker.cs b/src/csharp/Grpc.Core/Interceptors/InterceptingCallInvoker.cs new file mode 100644 index 0000000000..fb06523abb --- /dev/null +++ b/src/csharp/Grpc.Core/Interceptors/InterceptingCallInvoker.cs @@ -0,0 +1,96 @@ +#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, "invoker"); + this.interceptor = GrpcPreconditions.CheckNotNull(interceptor, "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)); + } + } +} |