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test/Grpc.Net.Client.Tests/Infrastructure/ClientLoggerInterceptor.cs
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| #region Copyright notice and license | ||
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| // Copyright 2019 The 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. | ||
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| #endregion | ||
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| using Grpc.Core; | ||
| using Grpc.Core.Interceptors; | ||
| using Microsoft.Extensions.Logging; | ||
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| namespace Grpc.Net.Client.Tests.Infrastructure; | ||
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| public sealed class ClientLoggerInterceptor : Interceptor | ||
| { | ||
| private readonly ILogger<ClientLoggerInterceptor> _logger; | ||
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| public ClientLoggerInterceptor(ILoggerFactory loggerFactory) | ||
| { | ||
| _logger = loggerFactory.CreateLogger<ClientLoggerInterceptor>(); | ||
| } | ||
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| public override TResponse BlockingUnaryCall<TRequest, TResponse>( | ||
| TRequest request, | ||
| ClientInterceptorContext<TRequest, TResponse> context, | ||
| BlockingUnaryCallContinuation<TRequest, TResponse> continuation) | ||
| { | ||
| LogCall(context.Method); | ||
| AddCallerMetadata(ref context); | ||
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| try | ||
| { | ||
| return continuation(request, context); | ||
| } | ||
| catch (Exception ex) | ||
| { | ||
| LogError(ex); | ||
| throw; | ||
| } | ||
| } | ||
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| public override AsyncUnaryCall<TResponse> AsyncUnaryCall<TRequest, TResponse>( | ||
| TRequest request, | ||
| ClientInterceptorContext<TRequest, TResponse> context, | ||
| AsyncUnaryCallContinuation<TRequest, TResponse> continuation) | ||
| { | ||
| LogCall(context.Method); | ||
| AddCallerMetadata(ref context); | ||
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| try | ||
| { | ||
| var call = continuation(request, context); | ||
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| return new AsyncUnaryCall<TResponse>(HandleResponse(call.ResponseAsync), call.ResponseHeadersAsync, call.GetStatus, call.GetTrailers, call.Dispose); | ||
| } | ||
| catch (Exception ex) | ||
| { | ||
| LogError(ex); | ||
| throw; | ||
| } | ||
| } | ||
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| private async Task<TResponse> HandleResponse<TResponse>(Task<TResponse> t) | ||
| { | ||
| try | ||
| { | ||
| var response = await t; | ||
| _logger.LogInformation($"Response received: {response}"); | ||
| return response; | ||
| } | ||
| catch (Exception ex) | ||
| { | ||
| LogError(ex); | ||
| throw; | ||
| } | ||
| } | ||
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| public override AsyncClientStreamingCall<TRequest, TResponse> AsyncClientStreamingCall<TRequest, TResponse>( | ||
| ClientInterceptorContext<TRequest, TResponse> context, | ||
| AsyncClientStreamingCallContinuation<TRequest, TResponse> continuation) | ||
| { | ||
| LogCall(context.Method); | ||
| AddCallerMetadata(ref context); | ||
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| try | ||
| { | ||
| return continuation(context); | ||
| } | ||
| catch (Exception ex) | ||
| { | ||
| LogError(ex); | ||
| throw; | ||
| } | ||
| } | ||
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| public override AsyncServerStreamingCall<TResponse> AsyncServerStreamingCall<TRequest, TResponse>( | ||
| TRequest request, | ||
| ClientInterceptorContext<TRequest, TResponse> context, | ||
| AsyncServerStreamingCallContinuation<TRequest, TResponse> continuation) | ||
| { | ||
| LogCall(context.Method); | ||
| AddCallerMetadata(ref context); | ||
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| try | ||
| { | ||
| return continuation(request, context); | ||
| } | ||
| catch (Exception ex) | ||
| { | ||
| LogError(ex); | ||
| throw; | ||
| } | ||
| } | ||
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| public override AsyncDuplexStreamingCall<TRequest, TResponse> AsyncDuplexStreamingCall<TRequest, TResponse>( | ||
| ClientInterceptorContext<TRequest, TResponse> context, | ||
| AsyncDuplexStreamingCallContinuation<TRequest, TResponse> continuation) | ||
| { | ||
| LogCall(context.Method); | ||
| AddCallerMetadata(ref context); | ||
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| try | ||
| { | ||
| return continuation(context); | ||
| } | ||
| catch (Exception ex) | ||
| { | ||
| LogError(ex); | ||
| throw; | ||
| } | ||
| } | ||
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| private void LogCall<TRequest, TResponse>(Method<TRequest, TResponse> method) | ||
| where TRequest : class | ||
| where TResponse : class | ||
| { | ||
| _logger.LogInformation($"Starting call. Name: {method.Name}. Type: {method.Type}. Request: {typeof(TRequest)}. Response: {typeof(TResponse)}"); | ||
| } | ||
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| private void AddCallerMetadata<TRequest, TResponse>(ref ClientInterceptorContext<TRequest, TResponse> context) | ||
| where TRequest : class | ||
| where TResponse : class | ||
| { | ||
| var headers = context.Options.Headers; | ||
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| // Call doesn't have a headers collection to add to. | ||
| // Need to create a new context with headers for the call. | ||
| if (headers == null) | ||
| { | ||
| headers = new Metadata(); | ||
| var options = context.Options.WithHeaders(headers); | ||
| context = new ClientInterceptorContext<TRequest, TResponse>(context.Method, context.Host, options); | ||
| } | ||
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| // Add caller metadata to call headers | ||
| headers.Add("caller-user", Environment.UserName); | ||
| headers.Add("caller-machine", Environment.MachineName); | ||
| headers.Add("caller-os", Environment.OSVersion.ToString()); | ||
| } | ||
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| private void LogError(Exception ex) | ||
| { | ||
| _logger.LogError(ex, $"Call error: {ex.Message}"); | ||
| } | ||
| } | ||
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