Add failure microbenchmark (#1581)

Author: JamesNK

perf/Grpc.AspNetCore.Microbenchmarks/Server/FailureStatusUnaryServerCallHandlerBenchmark.cs

@@ -0,0 +1,38 @@
+#region Copyright notice and license
+
+// 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.
+
+#endregion
+
+using BenchmarkDotNet.Attributes;
+using Grpc.Core;
+
+namespace Grpc.AspNetCore.Microbenchmarks.Server
+{
+    public class FailureStatusUnaryServerCallHandlerBenchmark : UnaryServerCallHandlerBenchmarkBase
+    {
+        public FailureStatusUnaryServerCallHandlerBenchmark()
+        {
+            Method = (service, request, context) => throw new RpcException(Status.DefaultCancelled);
+            ExpectedStatus = "1";
+        }
+
+        [Benchmark]
+        public Task HandleCallAsync()
+        {
+            return InvokeUnaryRequestAsync();
+        }
+    }
+}

perf/Grpc.AspNetCore.Microbenchmarks/Server/UnaryServerCallHandlerBenchmarkBase.cs

@@ -51,6 +51,8 @@ public class UnaryServerCallHandlerBenchmarkBase
         protected InterceptorCollection? Interceptors { get; set; }
         protected List<ICompressionProvider>? CompressionProviders { get; set; }
         protected string? ResponseCompressionAlgorithm { get; set; }
+        protected Grpc.AspNetCore.Server.Model.UnaryServerMethod<TestService, ChatMessage, ChatMessage>? Method { get; set; }
+        protected string ExpectedStatus { get; set; } = "0";
 
         [GlobalSetup]
         public void GlobalSetup()
@@ -75,7 +77,7 @@ public void GlobalSetup()
             var result = Task.FromResult(message);
             _callHandler = new UnaryServerCallHandler<TestService, ChatMessage, ChatMessage>(
                 new UnaryServerMethodInvoker<TestService, ChatMessage, ChatMessage>(
-                    (service, request, context) => result,
+                    Method ?? ((service, request, context) => result),
                     method,
                     HttpContextServerCallContextHelper.CreateMethodOptions(
                         compressionProviders: CompressionProviders,
@@ -135,7 +137,7 @@ protected async Task InvokeUnaryRequestAsync()
             StringValues value;
             if (_trailers.TryGetValue("grpc-status", out value) || _headers.TryGetValue("grpc-status", out value))
             {
-                if (!value.Equals("0"))
+                if (!value.Equals(ExpectedStatus))
                 {
                     throw new InvalidOperationException("Unexpected grpc-status: " + Enum.Parse<StatusCode>(value));
                 }