Adding generic rpc and unimplemented rpc test for server interceptors

include/grpcpp/impl/codegen/server_interface.h

@@ -184,7 +184,6 @@ class ServerInterface : public internal::CallHook {
                            const char* name);
 
     virtual bool FinalizeResult(void** tag, bool* status) override {
-      gpr_log(GPR_ERROR, "finalize registeredasyncrequest");
       /* If we are done intercepting, then there is nothing more for us to do */
       if (done_intercepting_) {
         return BaseAsyncRequest::FinalizeResult(tag, status);
@@ -238,7 +237,6 @@ class ServerInterface : public internal::CallHook {
           notification_cq_(notification_cq),
           tag_(tag),
           request_(request) {
-      gpr_log(GPR_ERROR, "new payload request");
       IssueRequest(registered_method->server_tag(), payload_.bbuf_ptr(),
                    notification_cq);
     }
@@ -248,7 +246,6 @@ class ServerInterface : public internal::CallHook {
     }
 
     bool FinalizeResult(void** tag, bool* status) override {
-      gpr_log(GPR_ERROR, "finalize PayloadAsyncRequest");
       /* If we are done intercepting, then there is nothing more for us to do */
       if (done_intercepting_) {
         return RegisteredAsyncRequest::FinalizeResult(tag, status);
@@ -313,7 +310,6 @@ class ServerInterface : public internal::CallHook {
                         ServerCompletionQueue* notification_cq, void* tag,
                         Message* message) {
     GPR_CODEGEN_ASSERT(method);
-    gpr_log(GPR_ERROR, "request async method with payload");
     new PayloadAsyncRequest<Message>(method, this, context, stream, call_cq,
                                      notification_cq, tag, message);
   }
@@ -324,7 +320,6 @@ class ServerInterface : public internal::CallHook {
                         CompletionQueue* call_cq,
                         ServerCompletionQueue* notification_cq, void* tag) {
     GPR_CODEGEN_ASSERT(method);
-    gpr_log(GPR_ERROR, "request async method with no payload");
     new NoPayloadAsyncRequest(method, this, context, stream, call_cq,
                               notification_cq, tag);
   }
@@ -334,7 +329,6 @@ class ServerInterface : public internal::CallHook {
                                CompletionQueue* call_cq,
                                ServerCompletionQueue* notification_cq,
                                void* tag) {
-    gpr_log(GPR_ERROR, "request async generic call");
     new GenericAsyncRequest(this, context, stream, call_cq, notification_cq,
                             tag, true);
   }

src/cpp/server/server_cc.cc

@@ -132,10 +132,13 @@ class Server::UnimplementedAsyncResponse final
   ~UnimplementedAsyncResponse() { delete request_; }
 
   bool FinalizeResult(void** tag, bool* status) override {
-    internal::CallOpSet<
+    if (internal::CallOpSet<
             internal::CallOpSendInitialMetadata,
-        internal::CallOpServerSendStatus>::FinalizeResult(tag, status);
+            internal::CallOpServerSendStatus>::FinalizeResult(tag, status)) {
       delete this;
+    } else {
+      // The tag was swallowed due to interception. We will see it again.
+    }
     return false;
   }
 
@@ -755,7 +758,6 @@ ServerInterface::BaseAsyncRequest::BaseAsyncRequest(
   /* Set up interception state partially for the receive ops. call_wrapper_ is
    * not filled at this point, but it will be filled before the interceptors are
    * run. */
-  gpr_log(GPR_ERROR, "Created base async request");
   interceptor_methods_.SetCall(&call_wrapper_);
   interceptor_methods_.SetReverse();
   call_cq_->RegisterAvalanching();  // This op will trigger more ops
@@ -767,9 +769,7 @@ ServerInterface::BaseAsyncRequest::~BaseAsyncRequest() {
 
 bool ServerInterface::BaseAsyncRequest::FinalizeResult(void** tag,
                                                        bool* status) {
-  gpr_log(GPR_ERROR, "in finalize result");
   if (done_intercepting_) {
-    gpr_log(GPR_ERROR, "done running interceptors");
     *tag = tag_;
     if (delete_on_finalize_) {
       delete this;
@@ -788,7 +788,6 @@ bool ServerInterface::BaseAsyncRequest::FinalizeResult(void** tag,
   stream_->BindCall(&call_wrapper_);
 
   if (*status && call_ && call_wrapper_.server_rpc_info()) {
-    gpr_log(GPR_ERROR, "here");
     done_intercepting_ = true;
     // Set interception point for RECV INITIAL METADATA
     interceptor_methods_.AddInterceptionHookPoint(
@@ -803,7 +802,6 @@ bool ServerInterface::BaseAsyncRequest::FinalizeResult(void** tag,
       // There were interceptors to be run, so
       // ContinueFinalizeResultAfterInterception will be run when interceptors
       // are done.
-      gpr_log(GPR_ERROR, "don't return this tag");
       return false;
     }
   }
@@ -819,7 +817,6 @@ bool ServerInterface::BaseAsyncRequest::FinalizeResult(void** tag,
 
 void ServerInterface::BaseAsyncRequest::
     ContinueFinalizeResultAfterInterception() {
-  gpr_log(GPR_ERROR, "continue finalize result");
   context_->BeginCompletionOp(&call_wrapper_);
   // Queue a tag which will be returned immediately
   grpc_core::ExecCtx exec_ctx;

test/cpp/end2end/server_interceptors_end2end_test.cc

@@ -425,6 +425,151 @@ TEST_F(ServerInterceptorsAsyncEnd2endTest, BidiStreamingTest) {
   grpc_recycle_unused_port(port);
 }
 
+TEST_F(ServerInterceptorsAsyncEnd2endTest, GenericRPCTest) {
+  DummyInterceptor::Reset();
+  int port = grpc_pick_unused_port_or_die();
+  string server_address = "localhost:" + std::to_string(port);
+  ServerBuilder builder;
+  AsyncGenericService service;
+  builder.AddListeningPort(server_address, InsecureServerCredentials());
+  builder.RegisterAsyncGenericService(&service);
+  std::vector<std::unique_ptr<experimental::ServerInterceptorFactoryInterface>>
+      creators;
+  for (auto i = 0; i < 20; i++) {
+    creators.push_back(std::unique_ptr<DummyInterceptorFactory>(
+        new DummyInterceptorFactory()));
+  }
+  builder.experimental().SetInterceptorCreators(std::move(creators));
+  auto cq = builder.AddCompletionQueue();
+  auto server = builder.BuildAndStart();
+
+  ChannelArguments args;
+  auto channel = CreateChannel(server_address, InsecureChannelCredentials());
+  GenericStub generic_stub(channel);
+
+  const grpc::string kMethodName("/grpc.cpp.test.util.EchoTestService/Echo");
+  EchoRequest send_request;
+  EchoRequest recv_request;
+  EchoResponse send_response;
+  EchoResponse recv_response;
+  Status recv_status;
+
+  ClientContext cli_ctx;
+  GenericServerContext srv_ctx;
+  GenericServerAsyncReaderWriter stream(&srv_ctx);
+
+  // The string needs to be long enough to test heap-based slice.
+  send_request.set_message("Hello");
+  cli_ctx.AddMetadata("testkey", "testvalue");
+
+  std::unique_ptr<GenericClientAsyncReaderWriter> call =
+      generic_stub.PrepareCall(&cli_ctx, kMethodName, cq.get());
+  call->StartCall(tag(1));
+  Verifier().Expect(1, true).Verify(cq.get());
+  std::unique_ptr<ByteBuffer> send_buffer =
+      SerializeToByteBuffer(&send_request);
+  call->Write(*send_buffer, tag(2));
+  // Send ByteBuffer can be destroyed after calling Write.
+  send_buffer.reset();
+  Verifier().Expect(2, true).Verify(cq.get());
+  call->WritesDone(tag(3));
+  Verifier().Expect(3, true).Verify(cq.get());
+
+  service.RequestCall(&srv_ctx, &stream, cq.get(), cq.get(), tag(4));
+
+  Verifier().Expect(4, true).Verify(cq.get());
+  EXPECT_EQ(kMethodName, srv_ctx.method());
+  EXPECT_TRUE(CheckMetadata(srv_ctx.client_metadata(), "testkey", "testvalue"));
+  srv_ctx.AddTrailingMetadata("testkey", "testvalue");
+
+  ByteBuffer recv_buffer;
+  stream.Read(&recv_buffer, tag(5));
+  Verifier().Expect(5, true).Verify(cq.get());
+  EXPECT_TRUE(ParseFromByteBuffer(&recv_buffer, &recv_request));
+  EXPECT_EQ(send_request.message(), recv_request.message());
+
+  send_response.set_message(recv_request.message());
+  send_buffer = SerializeToByteBuffer(&send_response);
+  stream.Write(*send_buffer, tag(6));
+  send_buffer.reset();
+  Verifier().Expect(6, true).Verify(cq.get());
+
+  stream.Finish(Status::OK, tag(7));
+  Verifier().Expect(7, true).Verify(cq.get());
+
+  recv_buffer.Clear();
+  call->Read(&recv_buffer, tag(8));
+  Verifier().Expect(8, true).Verify(cq.get());
+  EXPECT_TRUE(ParseFromByteBuffer(&recv_buffer, &recv_response));
+
+  call->Finish(&recv_status, tag(9));
+  Verifier().Expect(9, true).Verify(cq.get());
+
+  EXPECT_EQ(send_response.message(), recv_response.message());
+  EXPECT_TRUE(recv_status.ok());
+  EXPECT_TRUE(CheckMetadata(cli_ctx.GetServerTrailingMetadata(), "testkey",
+                            "testvalue"));
+
+  // Make sure all 20 dummy interceptors were run
+  EXPECT_EQ(DummyInterceptor::GetNumTimesRun(), 20);
+
+  server->Shutdown();
+  cq->Shutdown();
+  void* ignored_tag;
+  bool ignored_ok;
+  while (cq->Next(&ignored_tag, &ignored_ok))
+    ;
+  grpc_recycle_unused_port(port);
+}
+
+TEST_F(ServerInterceptorsAsyncEnd2endTest, UnimplementedRpcTest) {
+  DummyInterceptor::Reset();
+  int port = grpc_pick_unused_port_or_die();
+  string server_address = "localhost:" + std::to_string(port);
+  ServerBuilder builder;
+  builder.AddListeningPort(server_address, InsecureServerCredentials());
+  std::vector<std::unique_ptr<experimental::ServerInterceptorFactoryInterface>>
+      creators;
+  for (auto i = 0; i < 20; i++) {
+    creators.push_back(std::unique_ptr<DummyInterceptorFactory>(
+        new DummyInterceptorFactory()));
+  }
+  builder.experimental().SetInterceptorCreators(std::move(creators));
+  auto cq = builder.AddCompletionQueue();
+  auto server = builder.BuildAndStart();
+
+  ChannelArguments args;
+  std::shared_ptr<Channel> channel =
+      CreateChannel(server_address, InsecureChannelCredentials());
+  std::unique_ptr<grpc::testing::UnimplementedEchoService::Stub> stub;
+  stub = grpc::testing::UnimplementedEchoService::NewStub(channel);
+  EchoRequest send_request;
+  EchoResponse recv_response;
+  Status recv_status;
+
+  ClientContext cli_ctx;
+  send_request.set_message("Hello");
+  std::unique_ptr<ClientAsyncResponseReader<EchoResponse>> response_reader(
+      stub->AsyncUnimplemented(&cli_ctx, send_request, cq.get()));
+
+  response_reader->Finish(&recv_response, &recv_status, tag(4));
+  Verifier().Expect(4, true).Verify(cq.get());
+
+  EXPECT_EQ(StatusCode::UNIMPLEMENTED, recv_status.error_code());
+  EXPECT_EQ("", recv_status.error_message());
+
+  // Make sure all 20 dummy interceptors were run
+  // EXPECT_EQ(DummyInterceptor::GetNumTimesRun(), 20);
+
+  server->Shutdown();
+  cq->Shutdown();
+  void* ignored_tag;
+  bool ignored_ok;
+  while (cq->Next(&ignored_tag, &ignored_ok))
+    ;
+  grpc_recycle_unused_port(port);
+}
+
 }  // namespace
 }  // namespace testing
 }  // namespace grpc