| #region Copyright notice and license |
| |
| // Copyright 2015, Google Inc. |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #endregion |
| |
| using System; |
| using System.Diagnostics; |
| using System.Linq; |
| using System.Threading; |
| using System.Threading.Tasks; |
| using Grpc.Core; |
| using Grpc.Core.Internal; |
| using Grpc.Core.Utils; |
| using NUnit.Framework; |
| |
| namespace Grpc.Core.Tests |
| { |
| /// <summary> |
| /// Tests for Deadline support. |
| /// </summary> |
| public class TimeoutsTest |
| { |
| const string Host = "localhost"; |
| const string ServiceName = "/tests.Test"; |
| |
| static readonly Method<string, string> TestMethod = new Method<string, string>( |
| MethodType.Unary, |
| "/tests.Test/Test", |
| Marshallers.StringMarshaller, |
| Marshallers.StringMarshaller); |
| |
| static readonly ServerServiceDefinition ServiceDefinition = ServerServiceDefinition.CreateBuilder(ServiceName) |
| .AddMethod(TestMethod, TestMethodHandler) |
| .Build(); |
| |
| // provides a way how to retrieve an out-of-band result value from server handler |
| static TaskCompletionSource<string> stringFromServerHandlerTcs; |
| |
| Server server; |
| Channel channel; |
| |
| [SetUp] |
| public void Init() |
| { |
| server = new Server(); |
| server.AddServiceDefinition(ServiceDefinition); |
| int port = server.AddPort(Host, Server.PickUnusedPort, ServerCredentials.Insecure); |
| server.Start(); |
| channel = new Channel(Host, port, Credentials.Insecure); |
| |
| stringFromServerHandlerTcs = new TaskCompletionSource<string>(); |
| } |
| |
| [TearDown] |
| public void Cleanup() |
| { |
| channel.Dispose(); |
| server.ShutdownAsync().Wait(); |
| } |
| |
| [TestFixtureTearDown] |
| public void CleanupClass() |
| { |
| GrpcEnvironment.Shutdown(); |
| } |
| |
| [Test] |
| public void InfiniteDeadline() |
| { |
| // no deadline specified, check server sees infinite deadline |
| var internalCall = new Call<string, string>(ServiceName, TestMethod, channel, Metadata.Empty); |
| Assert.AreEqual("DATETIME_MAXVALUE", Calls.BlockingUnaryCall(internalCall, "RETURN_DEADLINE", CancellationToken.None)); |
| |
| // DateTime.MaxValue deadline specified, check server sees infinite deadline |
| var internalCall2 = new Call<string, string>(ServiceName, TestMethod, channel, Metadata.Empty, DateTime.MaxValue); |
| Assert.AreEqual("DATETIME_MAXVALUE", Calls.BlockingUnaryCall(internalCall2, "RETURN_DEADLINE", CancellationToken.None)); |
| } |
| |
| [Test] |
| public void DeadlineTransferredToServer() |
| { |
| var remainingTimeClient = TimeSpan.FromDays(7); |
| var deadline = DateTime.UtcNow + remainingTimeClient; |
| Thread.Sleep(1000); |
| var internalCall = new Call<string, string>(ServiceName, TestMethod, channel, Metadata.Empty, deadline); |
| |
| var serverDeadlineTicksString = Calls.BlockingUnaryCall(internalCall, "RETURN_DEADLINE", CancellationToken.None); |
| var serverDeadline = new DateTime(long.Parse(serverDeadlineTicksString), DateTimeKind.Utc); |
| |
| // A fairly relaxed check that the deadline set by client and deadline seen by server |
| // are in agreement. C core takes care of the work with transferring deadline over the wire, |
| // so we don't need an exact check here. |
| Assert.IsTrue(Math.Abs((deadline - serverDeadline).TotalMilliseconds) < 5000); |
| } |
| |
| [Test] |
| public void DeadlineInThePast() |
| { |
| var deadline = DateTime.MinValue; |
| var internalCall = new Call<string, string>(ServiceName, TestMethod, channel, Metadata.Empty, deadline); |
| |
| try |
| { |
| Calls.BlockingUnaryCall(internalCall, "TIMEOUT", CancellationToken.None); |
| Assert.Fail(); |
| } |
| catch (RpcException e) |
| { |
| Assert.AreEqual(StatusCode.DeadlineExceeded, e.Status.StatusCode); |
| } |
| } |
| |
| [Test] |
| public void DeadlineExceededStatusOnTimeout() |
| { |
| var deadline = DateTime.UtcNow.Add(TimeSpan.FromSeconds(5)); |
| var internalCall = new Call<string, string>(ServiceName, TestMethod, channel, Metadata.Empty, deadline); |
| |
| try |
| { |
| Calls.BlockingUnaryCall(internalCall, "TIMEOUT", CancellationToken.None); |
| Assert.Fail(); |
| } |
| catch (RpcException e) |
| { |
| Assert.AreEqual(StatusCode.DeadlineExceeded, e.Status.StatusCode); |
| } |
| } |
| |
| [Test] |
| public void ServerReceivesCancellationOnTimeout() |
| { |
| var deadline = DateTime.UtcNow.Add(TimeSpan.FromSeconds(5)); |
| var internalCall = new Call<string, string>(ServiceName, TestMethod, channel, Metadata.Empty, deadline); |
| |
| try |
| { |
| Calls.BlockingUnaryCall(internalCall, "CHECK_CANCELLATION_RECEIVED", CancellationToken.None); |
| Assert.Fail(); |
| } |
| catch (RpcException e) |
| { |
| Assert.AreEqual(StatusCode.DeadlineExceeded, e.Status.StatusCode); |
| } |
| Assert.AreEqual("CANCELLED", stringFromServerHandlerTcs.Task.Result); |
| } |
| |
| private static async Task<string> TestMethodHandler(string request, ServerCallContext context) |
| { |
| if (request == "TIMEOUT") |
| { |
| await Task.Delay(60000); |
| return ""; |
| } |
| |
| if (request == "RETURN_DEADLINE") |
| { |
| if (context.Deadline == DateTime.MaxValue) |
| { |
| return "DATETIME_MAXVALUE"; |
| } |
| |
| return context.Deadline.Ticks.ToString(); |
| } |
| |
| if (request == "CHECK_CANCELLATION_RECEIVED") |
| { |
| // wait until cancellation token is fired. |
| var tcs = new TaskCompletionSource<object>(); |
| context.CancellationToken.Register(() => { tcs.SetResult(null); }); |
| await tcs.Task; |
| stringFromServerHandlerTcs.SetResult("CANCELLED"); |
| return ""; |
| } |
| |
| return ""; |
| } |
| } |
| } |