| #region Copyright notice and license |
| |
| // Copyright 2015 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 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 |
| { |
| public class ContextPropagationTest |
| { |
| MockServiceHelper helper; |
| Server server; |
| Channel channel; |
| |
| [SetUp] |
| public void Init() |
| { |
| helper = new MockServiceHelper(); |
| |
| server = helper.GetServer(); |
| server.Start(); |
| channel = helper.GetChannel(); |
| } |
| |
| [TearDown] |
| public void Cleanup() |
| { |
| channel.ShutdownAsync().Wait(); |
| server.ShutdownAsync().Wait(); |
| } |
| |
| [Test] |
| public async Task PropagateCancellation() |
| { |
| var readyToCancelTcs = new TaskCompletionSource<object>(); |
| var successTcs = new TaskCompletionSource<string>(); |
| |
| helper.UnaryHandler = new UnaryServerMethod<string, string>(async (request, context) => |
| { |
| readyToCancelTcs.SetResult(null); // child call running, ready to parent call |
| |
| while (!context.CancellationToken.IsCancellationRequested) |
| { |
| await Task.Delay(10); |
| } |
| successTcs.SetResult("CHILD_CALL_CANCELLED"); |
| return ""; |
| }); |
| |
| helper.ClientStreamingHandler = new ClientStreamingServerMethod<string, string>(async (requestStream, context) => |
| { |
| var propagationToken = context.CreatePropagationToken(); |
| Assert.IsNotNull(propagationToken.ParentCall); |
| |
| var callOptions = new CallOptions(propagationToken: propagationToken); |
| try |
| { |
| await Calls.AsyncUnaryCall(helper.CreateUnaryCall(callOptions), "xyz"); |
| } |
| catch(RpcException) |
| { |
| // Child call will get cancelled, eat the exception. |
| } |
| return ""; |
| }); |
| |
| var cts = new CancellationTokenSource(); |
| var parentCall = Calls.AsyncClientStreamingCall(helper.CreateClientStreamingCall(new CallOptions(cancellationToken: cts.Token))); |
| await readyToCancelTcs.Task; |
| cts.Cancel(); |
| try |
| { |
| // cannot use Assert.ThrowsAsync because it uses Task.Wait and would deadlock. |
| await parentCall; |
| Assert.Fail(); |
| } |
| catch (RpcException) |
| { |
| } |
| Assert.AreEqual("CHILD_CALL_CANCELLED", await successTcs.Task); |
| } |
| |
| [Test] |
| public async Task PropagateDeadline() |
| { |
| var deadline = DateTime.UtcNow.AddDays(7); |
| helper.UnaryHandler = new UnaryServerMethod<string, string>((request, context) => |
| { |
| Assert.IsTrue(context.Deadline < deadline.AddMinutes(1)); |
| Assert.IsTrue(context.Deadline > deadline.AddMinutes(-1)); |
| return Task.FromResult("PASS"); |
| }); |
| |
| helper.ClientStreamingHandler = new ClientStreamingServerMethod<string, string>(async (requestStream, context) => |
| { |
| Assert.Throws(typeof(ArgumentException), () => |
| { |
| // Trying to override deadline while propagating deadline from parent call will throw. |
| Calls.BlockingUnaryCall(helper.CreateUnaryCall( |
| new CallOptions(deadline: DateTime.UtcNow.AddDays(8), |
| propagationToken: context.CreatePropagationToken())), ""); |
| }); |
| |
| var callOptions = new CallOptions(propagationToken: context.CreatePropagationToken()); |
| return await Calls.AsyncUnaryCall(helper.CreateUnaryCall(callOptions), "xyz"); |
| }); |
| |
| var call = Calls.AsyncClientStreamingCall(helper.CreateClientStreamingCall(new CallOptions(deadline: deadline))); |
| await call.RequestStream.CompleteAsync(); |
| Assert.AreEqual("PASS", await call); |
| } |
| |
| [Test] |
| public async Task SuppressDeadlinePropagation() |
| { |
| helper.UnaryHandler = new UnaryServerMethod<string, string>((request, context) => |
| { |
| Assert.AreEqual(DateTime.MaxValue, context.Deadline); |
| return Task.FromResult("PASS"); |
| }); |
| |
| helper.ClientStreamingHandler = new ClientStreamingServerMethod<string, string>(async (requestStream, context) => |
| { |
| Assert.IsTrue(context.CancellationToken.CanBeCanceled); |
| |
| var callOptions = new CallOptions(propagationToken: context.CreatePropagationToken(new ContextPropagationOptions(propagateDeadline: false))); |
| return await Calls.AsyncUnaryCall(helper.CreateUnaryCall(callOptions), "xyz"); |
| }); |
| |
| var cts = new CancellationTokenSource(); |
| var call = Calls.AsyncClientStreamingCall(helper.CreateClientStreamingCall(new CallOptions(deadline: DateTime.UtcNow.AddDays(7)))); |
| await call.RequestStream.CompleteAsync(); |
| Assert.AreEqual("PASS", await call); |
| } |
| } |
| } |