Jan Tattermusch | b2b54fe | 2017-06-27 14:37:01 +0200 | [diff] [blame] | 1 | #region Copyright notice and license |
| 2 | |
| 3 | // Copyright 2015-2016 gRPC authors. |
| 4 | // |
| 5 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | // you may not use this file except in compliance with the License. |
| 7 | // You may obtain a copy of the License at |
| 8 | // |
| 9 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | // |
| 11 | // Unless required by applicable law or agreed to in writing, software |
| 12 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | // See the License for the specific language governing permissions and |
| 15 | // limitations under the License. |
| 16 | |
| 17 | #endregion |
| 18 | |
| 19 | using System; |
| 20 | using System.Collections.Generic; |
| 21 | using System.IO; |
| 22 | using System.Linq; |
| 23 | using System.Threading; |
| 24 | using System.Threading.Tasks; |
| 25 | using Google.Protobuf; |
| 26 | using Grpc.Core; |
| 27 | using Grpc.Core.Utils; |
| 28 | using Grpc.Testing; |
| 29 | using NUnit.Framework; |
| 30 | |
| 31 | namespace Grpc.IntegrationTesting |
| 32 | { |
| 33 | /// <summary> |
| 34 | /// Shows how to attach custom error details as a binary trailer. |
| 35 | /// </summary> |
| 36 | public class CustomErrorDetailsTest |
| 37 | { |
| 38 | const string DebugInfoTrailerName = "debug-info-bin"; |
| 39 | const string ExceptionDetail = "Exception thrown on purpose."; |
| 40 | const string Host = "localhost"; |
| 41 | Server server; |
| 42 | Channel channel; |
| 43 | TestService.TestServiceClient client; |
| 44 | |
Jan Tattermusch | c152d66 | 2017-08-09 09:24:20 +0200 | [diff] [blame] | 45 | [OneTimeSetUp] |
Jan Tattermusch | b2b54fe | 2017-06-27 14:37:01 +0200 | [diff] [blame] | 46 | public void Init() |
| 47 | { |
| 48 | // Disable SO_REUSEPORT to prevent https://github.com/grpc/grpc/issues/10755 |
| 49 | server = new Server(new[] { new ChannelOption(ChannelOptions.SoReuseport, 0) }) |
| 50 | { |
| 51 | Services = { TestService.BindService(new CustomErrorDetailsTestServiceImpl()) }, |
| 52 | Ports = { { Host, ServerPort.PickUnused, ServerCredentials.Insecure } } |
| 53 | }; |
| 54 | server.Start(); |
| 55 | |
| 56 | channel = new Channel(Host, server.Ports.Single().BoundPort, ChannelCredentials.Insecure); |
| 57 | client = new TestService.TestServiceClient(channel); |
| 58 | } |
| 59 | |
Jan Tattermusch | c152d66 | 2017-08-09 09:24:20 +0200 | [diff] [blame] | 60 | [OneTimeTearDown] |
Jan Tattermusch | b2b54fe | 2017-06-27 14:37:01 +0200 | [diff] [blame] | 61 | public void Cleanup() |
| 62 | { |
| 63 | channel.ShutdownAsync().Wait(); |
| 64 | server.ShutdownAsync().Wait(); |
| 65 | } |
| 66 | |
| 67 | [Test] |
Jan Tattermusch | 40ea2d3 | 2017-08-09 10:23:15 +0200 | [diff] [blame] | 68 | public async Task ErrorDetailsFromCallObject() |
Jan Tattermusch | b2b54fe | 2017-06-27 14:37:01 +0200 | [diff] [blame] | 69 | { |
| 70 | var call = client.UnaryCallAsync(new SimpleRequest { ResponseSize = 10 }); |
| 71 | |
| 72 | try |
| 73 | { |
| 74 | await call.ResponseAsync; |
| 75 | Assert.Fail(); |
| 76 | } |
| 77 | catch (RpcException e) |
| 78 | { |
| 79 | Assert.AreEqual(StatusCode.Unknown, e.Status.StatusCode); |
| 80 | var debugInfo = GetDebugInfo(call.GetTrailers()); |
| 81 | Assert.AreEqual(debugInfo.Detail, ExceptionDetail); |
| 82 | Assert.IsNotEmpty(debugInfo.StackEntries); |
| 83 | } |
| 84 | } |
| 85 | |
Jan Tattermusch | 40ea2d3 | 2017-08-09 10:23:15 +0200 | [diff] [blame] | 86 | [Test] |
| 87 | public async Task ErrorDetailsFromRpcException() |
| 88 | { |
| 89 | try |
| 90 | { |
| 91 | await client.UnaryCallAsync(new SimpleRequest { ResponseSize = 10 }); |
| 92 | Assert.Fail(); |
| 93 | } |
| 94 | catch (RpcException e) |
| 95 | { |
| 96 | Assert.AreEqual(StatusCode.Unknown, e.Status.StatusCode); |
| 97 | var debugInfo = GetDebugInfo(e.Trailers); |
| 98 | Assert.AreEqual(debugInfo.Detail, ExceptionDetail); |
| 99 | Assert.IsNotEmpty(debugInfo.StackEntries); |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | private static DebugInfo GetDebugInfo(Metadata trailers) |
Jan Tattermusch | b2b54fe | 2017-06-27 14:37:01 +0200 | [diff] [blame] | 104 | { |
| 105 | var entry = trailers.First((e) => e.Key == DebugInfoTrailerName); |
| 106 | return DebugInfo.Parser.ParseFrom(entry.ValueBytes); |
| 107 | } |
| 108 | |
| 109 | private class CustomErrorDetailsTestServiceImpl : TestService.TestServiceBase |
| 110 | { |
Jan Tattermusch | c152d66 | 2017-08-09 09:24:20 +0200 | [diff] [blame] | 111 | public override Task<SimpleResponse> UnaryCall(SimpleRequest request, ServerCallContext context) |
Jan Tattermusch | b2b54fe | 2017-06-27 14:37:01 +0200 | [diff] [blame] | 112 | { |
| 113 | try |
| 114 | { |
| 115 | throw new ArgumentException(ExceptionDetail); |
| 116 | } |
| 117 | catch (Exception e) |
| 118 | { |
| 119 | // Fill debug info with some structured details about the failure. |
| 120 | var debugInfo = new DebugInfo(); |
| 121 | debugInfo.Detail = e.Message; |
| 122 | debugInfo.StackEntries.AddRange(e.StackTrace.Split(new[] { Environment.NewLine }, StringSplitOptions.None)); |
| 123 | context.ResponseTrailers.Add(DebugInfoTrailerName, debugInfo.ToByteArray()); |
| 124 | throw new RpcException(new Status(StatusCode.Unknown, "The handler threw exception.")); |
| 125 | } |
| 126 | } |
| 127 | } |
| 128 | } |
| 129 | } |