| 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798991001011021031041051061071081091101111121131141151161171181191201211221231241251261271281291301311321331341351361371381391401411421431441451461471481491501511521531541551561571581591601611621631641651661671681691701711721731741751761771781791801811821831841851861871881891901911921931941951961971981992002012022032042052062072082092102112122132142152162172182192202212222232242252262272282292302312322332342352362372382392402412422432442452462472482492502512522532542552562572582592602612622632642652662672682692702712722732742752762772782792802812822832842852862872882892902912922932942952962972982993003013023033043053063073083093103113123133143153163173183193203213223233243253263273283293303313323333343353363373383393403413423433443453463473483493503513523533543553563573583593603613623633643653663673683693703713723733743753763773783793803813823833843853863873883893903913923933943953963973983994004014024034044054064074084094104114124134144154164174184194204214224234244254264274284294304314324334344354364374384394404414424434444454464474484494504514524534544554564574584594604614624634644654664674684694704714724734744754764774784794804814824834844854864874884894904914924934944954964974984995005015025035045055065075085095105115125135145155165175185195205215225235245255265275285295305315325335345355365375385395405415425435445455465475485495505515525535545555565575585595605615625635645655665675685695705715725735745755765775785795805815825835845855865875885895905915925935945955965975985996006016026036046056066076086096106116126136146156166176186196206216226236246256266276286296306316326336346356366376386396406416426436446456466476486496506516526536546556566576586596606616626636646656666676686696706716726736746756766776786796806816826836846856866876886896906916926936946956966976986997007017027037047057067077087097107117127137147157167177187197207217227237247257267277287297307317327337347357367377387397407417427437447457467477487497507517527537547557567577587597607617627637647657667677687697707717727737747757767777787797807817827837847857867877887897907917927937947957967977987998008018028038048058068078088098108118128138148158168178188198208218228238248258268278288298308318328338348358368378388398408418428438448458468478488498508518528538548558568578588598608618628638648658668678688698708718728738748758768778788798808818828838848858868878888898908918928938948958968978988999009019029039049059069079089099109119129139149159169179189199209219229239249259269279289299309319329339349359369379389399409419429439449459469479489499509519529539549559569579589599609619629639649659669679689699709719729739749759769779789799809819829839849859869879889899909919929939949959969979989991000100110021003100410051006100710081009101010111012101310141015101610171018101910201021102210231024102510261027102810291030103110321033103410351036103710381039 | /* * * Copyright 2018 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. * */#include <memory>#include <vector>#include <grpcpp/channel.h>#include <grpcpp/client_context.h>#include <grpcpp/create_channel.h>#include <grpcpp/generic/generic_stub.h>#include <grpcpp/impl/codegen/proto_utils.h>#include <grpcpp/server.h>#include <grpcpp/server_builder.h>#include <grpcpp/server_context.h>#include <grpcpp/support/client_interceptor.h>#include "src/proto/grpc/testing/echo.grpc.pb.h"#include "test/core/util/port.h"#include "test/core/util/test_config.h"#include "test/cpp/end2end/interceptors_util.h"#include "test/cpp/end2end/test_service_impl.h"#include "test/cpp/util/byte_buffer_proto_helper.h"#include "test/cpp/util/string_ref_helper.h"#include <gtest/gtest.h>namespace grpc {namespace testing {namespace {/* Hijacks Echo RPC and fills in the expected values */class HijackingInterceptor : public experimental::Interceptor { public:  HijackingInterceptor(experimental::ClientRpcInfo* info) {    info_ = info;    // Make sure it is the right method    EXPECT_EQ(strcmp("/grpc.testing.EchoTestService/Echo", info->method()), 0);    EXPECT_EQ(info->type(), experimental::ClientRpcInfo::Type::UNARY);  }  virtual void Intercept(experimental::InterceptorBatchMethods* methods) {    bool hijack = false;    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_SEND_INITIAL_METADATA)) {      auto* map = methods->GetSendInitialMetadata();      // Check that we can see the test metadata      ASSERT_EQ(map->size(), static_cast<unsigned>(1));      auto iterator = map->begin();      EXPECT_EQ("testkey", iterator->first);      EXPECT_EQ("testvalue", iterator->second);      hijack = true;    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_SEND_MESSAGE)) {      EchoRequest req;      auto* buffer = methods->GetSerializedSendMessage();      auto copied_buffer = *buffer;      EXPECT_TRUE(          SerializationTraits<EchoRequest>::Deserialize(&copied_buffer, &req)              .ok());      EXPECT_EQ(req.message(), "Hello");    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_SEND_CLOSE)) {      // Got nothing to do here for now    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::POST_RECV_INITIAL_METADATA)) {      auto* map = methods->GetRecvInitialMetadata();      // Got nothing better to do here for now      EXPECT_EQ(map->size(), static_cast<unsigned>(0));    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::POST_RECV_MESSAGE)) {      EchoResponse* resp =          static_cast<EchoResponse*>(methods->GetRecvMessage());      // Check that we got the hijacked message, and re-insert the expected      // message      EXPECT_EQ(resp->message(), "Hello1");      resp->set_message("Hello");    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::POST_RECV_STATUS)) {      auto* map = methods->GetRecvTrailingMetadata();      bool found = false;      // Check that we received the metadata as an echo      for (const auto& pair : *map) {        found = pair.first.starts_with("testkey") &&                pair.second.starts_with("testvalue");        if (found) break;      }      EXPECT_EQ(found, true);      auto* status = methods->GetRecvStatus();      EXPECT_EQ(status->ok(), true);    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_RECV_INITIAL_METADATA)) {      auto* map = methods->GetRecvInitialMetadata();      // Got nothing better to do here at the moment      EXPECT_EQ(map->size(), static_cast<unsigned>(0));    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_RECV_MESSAGE)) {      // Insert a different message than expected      EchoResponse* resp =          static_cast<EchoResponse*>(methods->GetRecvMessage());      resp->set_message("Hello1");    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_RECV_STATUS)) {      auto* map = methods->GetRecvTrailingMetadata();      // insert the metadata that we want      EXPECT_EQ(map->size(), static_cast<unsigned>(0));      map->insert(std::make_pair("testkey", "testvalue"));      auto* status = methods->GetRecvStatus();      *status = Status(StatusCode::OK, "");    }    if (hijack) {      methods->Hijack();    } else {      methods->Proceed();    }  } private:  experimental::ClientRpcInfo* info_;};class HijackingInterceptorFactory    : public experimental::ClientInterceptorFactoryInterface { public:  virtual experimental::Interceptor* CreateClientInterceptor(      experimental::ClientRpcInfo* info) override {    return new HijackingInterceptor(info);  }};class HijackingInterceptorMakesAnotherCall : public experimental::Interceptor { public:  HijackingInterceptorMakesAnotherCall(experimental::ClientRpcInfo* info) {    info_ = info;    // Make sure it is the right method    EXPECT_EQ(strcmp("/grpc.testing.EchoTestService/Echo", info->method()), 0);  }  virtual void Intercept(experimental::InterceptorBatchMethods* methods) {    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_SEND_INITIAL_METADATA)) {      auto* map = methods->GetSendInitialMetadata();      // Check that we can see the test metadata      ASSERT_EQ(map->size(), static_cast<unsigned>(1));      auto iterator = map->begin();      EXPECT_EQ("testkey", iterator->first);      EXPECT_EQ("testvalue", iterator->second);      // Make a copy of the map      metadata_map_ = *map;    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_SEND_MESSAGE)) {      EchoRequest req;      auto* buffer = methods->GetSerializedSendMessage();      auto copied_buffer = *buffer;      EXPECT_TRUE(          SerializationTraits<EchoRequest>::Deserialize(&copied_buffer, &req)              .ok());      EXPECT_EQ(req.message(), "Hello");      req_ = req;      stub_ = grpc::testing::EchoTestService::NewStub(          methods->GetInterceptedChannel());      ctx_.AddMetadata(metadata_map_.begin()->first,                       metadata_map_.begin()->second);      stub_->experimental_async()->Echo(&ctx_, &req_, &resp_,                                        [this, methods](Status s) {                                          EXPECT_EQ(s.ok(), true);                                          EXPECT_EQ(resp_.message(), "Hello");                                          methods->Hijack();                                        });      // This is a Unary RPC and we have got nothing interesting to do in the      // PRE_SEND_CLOSE interception hook point for this interceptor, so let's      // return here. (We do not want to call methods->Proceed(). When the new      // RPC returns, we will call methods->Hijack() instead.)      return;    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_SEND_CLOSE)) {      // Got nothing to do here for now    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::POST_RECV_INITIAL_METADATA)) {      auto* map = methods->GetRecvInitialMetadata();      // Got nothing better to do here for now      EXPECT_EQ(map->size(), static_cast<unsigned>(0));    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::POST_RECV_MESSAGE)) {      EchoResponse* resp =          static_cast<EchoResponse*>(methods->GetRecvMessage());      // Check that we got the hijacked message, and re-insert the expected      // message      EXPECT_EQ(resp->message(), "Hello");    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::POST_RECV_STATUS)) {      auto* map = methods->GetRecvTrailingMetadata();      bool found = false;      // Check that we received the metadata as an echo      for (const auto& pair : *map) {        found = pair.first.starts_with("testkey") &&                pair.second.starts_with("testvalue");        if (found) break;      }      EXPECT_EQ(found, true);      auto* status = methods->GetRecvStatus();      EXPECT_EQ(status->ok(), true);    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_RECV_INITIAL_METADATA)) {      auto* map = methods->GetRecvInitialMetadata();      // Got nothing better to do here at the moment      EXPECT_EQ(map->size(), static_cast<unsigned>(0));    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_RECV_MESSAGE)) {      // Insert a different message than expected      EchoResponse* resp =          static_cast<EchoResponse*>(methods->GetRecvMessage());      resp->set_message(resp_.message());    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_RECV_STATUS)) {      auto* map = methods->GetRecvTrailingMetadata();      // insert the metadata that we want      EXPECT_EQ(map->size(), static_cast<unsigned>(0));      map->insert(std::make_pair("testkey", "testvalue"));      auto* status = methods->GetRecvStatus();      *status = Status(StatusCode::OK, "");    }    methods->Proceed();  } private:  experimental::ClientRpcInfo* info_;  std::multimap<grpc::string, grpc::string> metadata_map_;  ClientContext ctx_;  EchoRequest req_;  EchoResponse resp_;  std::unique_ptr<grpc::testing::EchoTestService::Stub> stub_;};class HijackingInterceptorMakesAnotherCallFactory    : public experimental::ClientInterceptorFactoryInterface { public:  virtual experimental::Interceptor* CreateClientInterceptor(      experimental::ClientRpcInfo* info) override {    return new HijackingInterceptorMakesAnotherCall(info);  }};class BidiStreamingRpcHijackingInterceptor : public experimental::Interceptor { public:  BidiStreamingRpcHijackingInterceptor(experimental::ClientRpcInfo* info) {    info_ = info;  }  virtual void Intercept(experimental::InterceptorBatchMethods* methods) {    bool hijack = false;    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_SEND_INITIAL_METADATA)) {      CheckMetadata(*methods->GetSendInitialMetadata(), "testkey", "testvalue");      hijack = true;    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_SEND_MESSAGE)) {      EchoRequest req;      auto* buffer = methods->GetSerializedSendMessage();      auto copied_buffer = *buffer;      EXPECT_TRUE(          SerializationTraits<EchoRequest>::Deserialize(&copied_buffer, &req)              .ok());      EXPECT_EQ(req.message().find("Hello"), 0u);      msg = req.message();    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_SEND_CLOSE)) {      // Got nothing to do here for now    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::POST_RECV_STATUS)) {      CheckMetadata(*methods->GetRecvTrailingMetadata(), "testkey",                    "testvalue");      auto* status = methods->GetRecvStatus();      EXPECT_EQ(status->ok(), true);    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_RECV_MESSAGE)) {      EchoResponse* resp =          static_cast<EchoResponse*>(methods->GetRecvMessage());      resp->set_message(msg);    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::POST_RECV_MESSAGE)) {      EXPECT_EQ(static_cast<EchoResponse*>(methods->GetRecvMessage())                    ->message()                    .find("Hello"),                0u);    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_RECV_STATUS)) {      auto* map = methods->GetRecvTrailingMetadata();      // insert the metadata that we want      EXPECT_EQ(map->size(), static_cast<unsigned>(0));      map->insert(std::make_pair("testkey", "testvalue"));      auto* status = methods->GetRecvStatus();      *status = Status(StatusCode::OK, "");    }    if (hijack) {      methods->Hijack();    } else {      methods->Proceed();    }  } private:  experimental::ClientRpcInfo* info_;  grpc::string msg;};class ClientStreamingRpcHijackingInterceptor    : public experimental::Interceptor { public:  ClientStreamingRpcHijackingInterceptor(experimental::ClientRpcInfo* info) {    info_ = info;  }  virtual void Intercept(experimental::InterceptorBatchMethods* methods) {    bool hijack = false;    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_SEND_INITIAL_METADATA)) {      hijack = true;    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_SEND_MESSAGE)) {      if (++count_ > 10) {        methods->FailHijackedSendMessage();      }    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::POST_SEND_MESSAGE)) {      EXPECT_FALSE(got_failed_send_);      got_failed_send_ = !methods->GetSendMessageStatus();    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_RECV_STATUS)) {      auto* status = methods->GetRecvStatus();      *status = Status(StatusCode::UNAVAILABLE, "Done sending 10 messages");    }    if (hijack) {      methods->Hijack();    } else {      methods->Proceed();    }  }  static bool GotFailedSend() { return got_failed_send_; } private:  experimental::ClientRpcInfo* info_;  int count_ = 0;  static bool got_failed_send_;};bool ClientStreamingRpcHijackingInterceptor::got_failed_send_ = false;class ClientStreamingRpcHijackingInterceptorFactory    : public experimental::ClientInterceptorFactoryInterface { public:  virtual experimental::Interceptor* CreateClientInterceptor(      experimental::ClientRpcInfo* info) override {    return new ClientStreamingRpcHijackingInterceptor(info);  }};class ServerStreamingRpcHijackingInterceptor    : public experimental::Interceptor { public:  ServerStreamingRpcHijackingInterceptor(experimental::ClientRpcInfo* info) {    info_ = info;  }  virtual void Intercept(experimental::InterceptorBatchMethods* methods) {    bool hijack = false;    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_SEND_INITIAL_METADATA)) {      auto* map = methods->GetSendInitialMetadata();      // Check that we can see the test metadata      ASSERT_EQ(map->size(), static_cast<unsigned>(1));      auto iterator = map->begin();      EXPECT_EQ("testkey", iterator->first);      EXPECT_EQ("testvalue", iterator->second);      hijack = true;    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_SEND_MESSAGE)) {      EchoRequest req;      auto* buffer = methods->GetSerializedSendMessage();      auto copied_buffer = *buffer;      EXPECT_TRUE(          SerializationTraits<EchoRequest>::Deserialize(&copied_buffer, &req)              .ok());      EXPECT_EQ(req.message(), "Hello");    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_SEND_CLOSE)) {      // Got nothing to do here for now    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::POST_RECV_STATUS)) {      auto* map = methods->GetRecvTrailingMetadata();      bool found = false;      // Check that we received the metadata as an echo      for (const auto& pair : *map) {        found = pair.first.starts_with("testkey") &&                pair.second.starts_with("testvalue");        if (found) break;      }      EXPECT_EQ(found, true);      auto* status = methods->GetRecvStatus();      EXPECT_EQ(status->ok(), true);    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_RECV_MESSAGE)) {      if (++count_ > 10) {        methods->FailHijackedRecvMessage();      }      EchoResponse* resp =          static_cast<EchoResponse*>(methods->GetRecvMessage());      resp->set_message("Hello");    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::POST_RECV_MESSAGE)) {      // Only the last message will be a failure      EXPECT_FALSE(got_failed_message_);      got_failed_message_ = methods->GetRecvMessage() == nullptr;    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_RECV_STATUS)) {      auto* map = methods->GetRecvTrailingMetadata();      // insert the metadata that we want      EXPECT_EQ(map->size(), static_cast<unsigned>(0));      map->insert(std::make_pair("testkey", "testvalue"));      auto* status = methods->GetRecvStatus();      *status = Status(StatusCode::OK, "");    }    if (hijack) {      methods->Hijack();    } else {      methods->Proceed();    }  }  static bool GotFailedMessage() { return got_failed_message_; } private:  experimental::ClientRpcInfo* info_;  static bool got_failed_message_;  int count_ = 0;};bool ServerStreamingRpcHijackingInterceptor::got_failed_message_ = false;class ServerStreamingRpcHijackingInterceptorFactory    : public experimental::ClientInterceptorFactoryInterface { public:  virtual experimental::Interceptor* CreateClientInterceptor(      experimental::ClientRpcInfo* info) override {    return new ServerStreamingRpcHijackingInterceptor(info);  }};class BidiStreamingRpcHijackingInterceptorFactory    : public experimental::ClientInterceptorFactoryInterface { public:  virtual experimental::Interceptor* CreateClientInterceptor(      experimental::ClientRpcInfo* info) override {    return new BidiStreamingRpcHijackingInterceptor(info);  }};// The logging interceptor is for testing purposes only. It is used to verify// that all the appropriate hook points are invoked for an RPC. The counts are// reset each time a new object of LoggingInterceptor is created, so only a// single RPC should be made on the channel before calling the Verify methods.class LoggingInterceptor : public experimental::Interceptor { public:  LoggingInterceptor(experimental::ClientRpcInfo* /*info*/) {    pre_send_initial_metadata_ = false;    pre_send_message_count_ = 0;    pre_send_close_ = false;    post_recv_initial_metadata_ = false;    post_recv_message_count_ = 0;    post_recv_status_ = false;  }  virtual void Intercept(experimental::InterceptorBatchMethods* methods) {    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_SEND_INITIAL_METADATA)) {      auto* map = methods->GetSendInitialMetadata();      // Check that we can see the test metadata      ASSERT_EQ(map->size(), static_cast<unsigned>(1));      auto iterator = map->begin();      EXPECT_EQ("testkey", iterator->first);      EXPECT_EQ("testvalue", iterator->second);      ASSERT_FALSE(pre_send_initial_metadata_);      pre_send_initial_metadata_ = true;    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_SEND_MESSAGE)) {      EchoRequest req;      EXPECT_EQ(static_cast<const EchoRequest*>(methods->GetSendMessage())                    ->message()                    .find("Hello"),                0u);      auto* buffer = methods->GetSerializedSendMessage();      auto copied_buffer = *buffer;      EXPECT_TRUE(          SerializationTraits<EchoRequest>::Deserialize(&copied_buffer, &req)              .ok());      EXPECT_TRUE(req.message().find("Hello") == 0u);      pre_send_message_count_++;    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::PRE_SEND_CLOSE)) {      // Got nothing to do here for now      pre_send_close_ = true;    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::POST_RECV_INITIAL_METADATA)) {      auto* map = methods->GetRecvInitialMetadata();      // Got nothing better to do here for now      EXPECT_EQ(map->size(), static_cast<unsigned>(0));      post_recv_initial_metadata_ = true;    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::POST_RECV_MESSAGE)) {      EchoResponse* resp =          static_cast<EchoResponse*>(methods->GetRecvMessage());      if (resp != nullptr) {        EXPECT_TRUE(resp->message().find("Hello") == 0u);        post_recv_message_count_++;      }    }    if (methods->QueryInterceptionHookPoint(            experimental::InterceptionHookPoints::POST_RECV_STATUS)) {      auto* map = methods->GetRecvTrailingMetadata();      bool found = false;      // Check that we received the metadata as an echo      for (const auto& pair : *map) {        found = pair.first.starts_with("testkey") &&                pair.second.starts_with("testvalue");        if (found) break;      }      EXPECT_EQ(found, true);      auto* status = methods->GetRecvStatus();      EXPECT_EQ(status->ok(), true);      post_recv_status_ = true;    }    methods->Proceed();  }  static void VerifyCallCommon() {    EXPECT_TRUE(pre_send_initial_metadata_);    EXPECT_TRUE(pre_send_close_);    EXPECT_TRUE(post_recv_initial_metadata_);    EXPECT_TRUE(post_recv_status_);  }  static void VerifyUnaryCall() {    VerifyCallCommon();    EXPECT_EQ(pre_send_message_count_, 1);    EXPECT_EQ(post_recv_message_count_, 1);  }  static void VerifyClientStreamingCall() {    VerifyCallCommon();    EXPECT_EQ(pre_send_message_count_, kNumStreamingMessages);    EXPECT_EQ(post_recv_message_count_, 1);  }  static void VerifyServerStreamingCall() {    VerifyCallCommon();    EXPECT_EQ(pre_send_message_count_, 1);    EXPECT_EQ(post_recv_message_count_, kNumStreamingMessages);  }  static void VerifyBidiStreamingCall() {    VerifyCallCommon();    EXPECT_EQ(pre_send_message_count_, kNumStreamingMessages);    EXPECT_EQ(post_recv_message_count_, kNumStreamingMessages);  } private:  static bool pre_send_initial_metadata_;  static int pre_send_message_count_;  static bool pre_send_close_;  static bool post_recv_initial_metadata_;  static int post_recv_message_count_;  static bool post_recv_status_;};bool LoggingInterceptor::pre_send_initial_metadata_;int LoggingInterceptor::pre_send_message_count_;bool LoggingInterceptor::pre_send_close_;bool LoggingInterceptor::post_recv_initial_metadata_;int LoggingInterceptor::post_recv_message_count_;bool LoggingInterceptor::post_recv_status_;class LoggingInterceptorFactory    : public experimental::ClientInterceptorFactoryInterface { public:  virtual experimental::Interceptor* CreateClientInterceptor(      experimental::ClientRpcInfo* info) override {    return new LoggingInterceptor(info);  }};class ClientInterceptorsEnd2endTest : public ::testing::Test { protected:  ClientInterceptorsEnd2endTest() {    int port = grpc_pick_unused_port_or_die();    ServerBuilder builder;    server_address_ = "localhost:" + std::to_string(port);    builder.AddListeningPort(server_address_, InsecureServerCredentials());    builder.RegisterService(&service_);    server_ = builder.BuildAndStart();  }  ~ClientInterceptorsEnd2endTest() { server_->Shutdown(); }  std::string server_address_;  TestServiceImpl service_;  std::unique_ptr<Server> server_;};TEST_F(ClientInterceptorsEnd2endTest, ClientInterceptorLoggingTest) {  ChannelArguments args;  DummyInterceptor::Reset();  std::vector<std::unique_ptr<experimental::ClientInterceptorFactoryInterface>>      creators;  creators.push_back(std::unique_ptr<LoggingInterceptorFactory>(      new LoggingInterceptorFactory()));  // Add 20 dummy interceptors  for (auto i = 0; i < 20; i++) {    creators.push_back(std::unique_ptr<DummyInterceptorFactory>(        new DummyInterceptorFactory()));  }  auto channel = experimental::CreateCustomChannelWithInterceptors(      server_address_, InsecureChannelCredentials(), args, std::move(creators));  MakeCall(channel);  LoggingInterceptor::VerifyUnaryCall();  // Make sure all 20 dummy interceptors were run  EXPECT_EQ(DummyInterceptor::GetNumTimesRun(), 20);}TEST_F(ClientInterceptorsEnd2endTest,       LameChannelClientInterceptorHijackingTest) {  ChannelArguments args;  std::vector<std::unique_ptr<experimental::ClientInterceptorFactoryInterface>>      creators;  creators.push_back(std::unique_ptr<HijackingInterceptorFactory>(      new HijackingInterceptorFactory()));  auto channel = experimental::CreateCustomChannelWithInterceptors(      server_address_, nullptr, args, std::move(creators));  MakeCall(channel);}TEST_F(ClientInterceptorsEnd2endTest, ClientInterceptorHijackingTest) {  ChannelArguments args;  DummyInterceptor::Reset();  std::vector<std::unique_ptr<experimental::ClientInterceptorFactoryInterface>>      creators;  // Add 20 dummy interceptors before hijacking interceptor  creators.reserve(20);  for (auto i = 0; i < 20; i++) {    creators.push_back(std::unique_ptr<DummyInterceptorFactory>(        new DummyInterceptorFactory()));  }  creators.push_back(std::unique_ptr<HijackingInterceptorFactory>(      new HijackingInterceptorFactory()));  // Add 20 dummy interceptors after hijacking interceptor  for (auto i = 0; i < 20; i++) {    creators.push_back(std::unique_ptr<DummyInterceptorFactory>(        new DummyInterceptorFactory()));  }  auto channel = experimental::CreateCustomChannelWithInterceptors(      server_address_, InsecureChannelCredentials(), args, std::move(creators));  MakeCall(channel);  // Make sure only 20 dummy interceptors were run  EXPECT_EQ(DummyInterceptor::GetNumTimesRun(), 20);}TEST_F(ClientInterceptorsEnd2endTest, ClientInterceptorLogThenHijackTest) {  ChannelArguments args;  std::vector<std::unique_ptr<experimental::ClientInterceptorFactoryInterface>>      creators;  creators.push_back(std::unique_ptr<LoggingInterceptorFactory>(      new LoggingInterceptorFactory()));  creators.push_back(std::unique_ptr<HijackingInterceptorFactory>(      new HijackingInterceptorFactory()));  auto channel = experimental::CreateCustomChannelWithInterceptors(      server_address_, InsecureChannelCredentials(), args, std::move(creators));  MakeCall(channel);  LoggingInterceptor::VerifyUnaryCall();}TEST_F(ClientInterceptorsEnd2endTest,       ClientInterceptorHijackingMakesAnotherCallTest) {  ChannelArguments args;  DummyInterceptor::Reset();  std::vector<std::unique_ptr<experimental::ClientInterceptorFactoryInterface>>      creators;  // Add 5 dummy interceptors before hijacking interceptor  creators.reserve(5);  for (auto i = 0; i < 5; i++) {    creators.push_back(std::unique_ptr<DummyInterceptorFactory>(        new DummyInterceptorFactory()));  }  creators.push_back(      std::unique_ptr<experimental::ClientInterceptorFactoryInterface>(          new HijackingInterceptorMakesAnotherCallFactory()));  // Add 7 dummy interceptors after hijacking interceptor  for (auto i = 0; i < 7; i++) {    creators.push_back(std::unique_ptr<DummyInterceptorFactory>(        new DummyInterceptorFactory()));  }  auto channel = server_->experimental().InProcessChannelWithInterceptors(      args, std::move(creators));  MakeCall(channel);  // Make sure all interceptors were run once, since the hijacking interceptor  // makes an RPC on the intercepted channel  EXPECT_EQ(DummyInterceptor::GetNumTimesRun(), 12);}TEST_F(ClientInterceptorsEnd2endTest,       ClientInterceptorLoggingTestWithCallback) {  ChannelArguments args;  DummyInterceptor::Reset();  std::vector<std::unique_ptr<experimental::ClientInterceptorFactoryInterface>>      creators;  creators.push_back(std::unique_ptr<LoggingInterceptorFactory>(      new LoggingInterceptorFactory()));  // Add 20 dummy interceptors  for (auto i = 0; i < 20; i++) {    creators.push_back(std::unique_ptr<DummyInterceptorFactory>(        new DummyInterceptorFactory()));  }  auto channel = server_->experimental().InProcessChannelWithInterceptors(      args, std::move(creators));  MakeCallbackCall(channel);  LoggingInterceptor::VerifyUnaryCall();  // Make sure all 20 dummy interceptors were run  EXPECT_EQ(DummyInterceptor::GetNumTimesRun(), 20);}TEST_F(ClientInterceptorsEnd2endTest,       ClientInterceptorFactoryAllowsNullptrReturn) {  ChannelArguments args;  DummyInterceptor::Reset();  std::vector<std::unique_ptr<experimental::ClientInterceptorFactoryInterface>>      creators;  creators.push_back(std::unique_ptr<LoggingInterceptorFactory>(      new LoggingInterceptorFactory()));  // Add 20 dummy interceptors and 20 null interceptors  for (auto i = 0; i < 20; i++) {    creators.push_back(std::unique_ptr<DummyInterceptorFactory>(        new DummyInterceptorFactory()));    creators.push_back(        std::unique_ptr<NullInterceptorFactory>(new NullInterceptorFactory()));  }  auto channel = server_->experimental().InProcessChannelWithInterceptors(      args, std::move(creators));  MakeCallbackCall(channel);  LoggingInterceptor::VerifyUnaryCall();  // Make sure all 20 dummy interceptors were run  EXPECT_EQ(DummyInterceptor::GetNumTimesRun(), 20);}class ClientInterceptorsStreamingEnd2endTest : public ::testing::Test { protected:  ClientInterceptorsStreamingEnd2endTest() {    int port = grpc_pick_unused_port_or_die();    ServerBuilder builder;    server_address_ = "localhost:" + std::to_string(port);    builder.AddListeningPort(server_address_, InsecureServerCredentials());    builder.RegisterService(&service_);    server_ = builder.BuildAndStart();  }  ~ClientInterceptorsStreamingEnd2endTest() { server_->Shutdown(); }  std::string server_address_;  EchoTestServiceStreamingImpl service_;  std::unique_ptr<Server> server_;};TEST_F(ClientInterceptorsStreamingEnd2endTest, ClientStreamingTest) {  ChannelArguments args;  DummyInterceptor::Reset();  std::vector<std::unique_ptr<experimental::ClientInterceptorFactoryInterface>>      creators;  creators.push_back(std::unique_ptr<LoggingInterceptorFactory>(      new LoggingInterceptorFactory()));  // Add 20 dummy interceptors  for (auto i = 0; i < 20; i++) {    creators.push_back(std::unique_ptr<DummyInterceptorFactory>(        new DummyInterceptorFactory()));  }  auto channel = experimental::CreateCustomChannelWithInterceptors(      server_address_, InsecureChannelCredentials(), args, std::move(creators));  MakeClientStreamingCall(channel);  LoggingInterceptor::VerifyClientStreamingCall();  // Make sure all 20 dummy interceptors were run  EXPECT_EQ(DummyInterceptor::GetNumTimesRun(), 20);}TEST_F(ClientInterceptorsStreamingEnd2endTest, ServerStreamingTest) {  ChannelArguments args;  DummyInterceptor::Reset();  std::vector<std::unique_ptr<experimental::ClientInterceptorFactoryInterface>>      creators;  creators.push_back(std::unique_ptr<LoggingInterceptorFactory>(      new LoggingInterceptorFactory()));  // Add 20 dummy interceptors  for (auto i = 0; i < 20; i++) {    creators.push_back(std::unique_ptr<DummyInterceptorFactory>(        new DummyInterceptorFactory()));  }  auto channel = experimental::CreateCustomChannelWithInterceptors(      server_address_, InsecureChannelCredentials(), args, std::move(creators));  MakeServerStreamingCall(channel);  LoggingInterceptor::VerifyServerStreamingCall();  // Make sure all 20 dummy interceptors were run  EXPECT_EQ(DummyInterceptor::GetNumTimesRun(), 20);}TEST_F(ClientInterceptorsStreamingEnd2endTest, ClientStreamingHijackingTest) {  ChannelArguments args;  std::vector<std::unique_ptr<experimental::ClientInterceptorFactoryInterface>>      creators;  creators.push_back(      std::unique_ptr<ClientStreamingRpcHijackingInterceptorFactory>(          new ClientStreamingRpcHijackingInterceptorFactory()));  auto channel = experimental::CreateCustomChannelWithInterceptors(      server_address_, InsecureChannelCredentials(), args, std::move(creators));  auto stub = grpc::testing::EchoTestService::NewStub(channel);  ClientContext ctx;  EchoRequest req;  EchoResponse resp;  req.mutable_param()->set_echo_metadata(true);  req.set_message("Hello");  string expected_resp = "";  auto writer = stub->RequestStream(&ctx, &resp);  for (int i = 0; i < 10; i++) {    EXPECT_TRUE(writer->Write(req));    expected_resp += "Hello";  }  // The interceptor will reject the 11th message  writer->Write(req);  Status s = writer->Finish();  EXPECT_EQ(s.ok(), false);  EXPECT_TRUE(ClientStreamingRpcHijackingInterceptor::GotFailedSend());}TEST_F(ClientInterceptorsStreamingEnd2endTest, ServerStreamingHijackingTest) {  ChannelArguments args;  DummyInterceptor::Reset();  std::vector<std::unique_ptr<experimental::ClientInterceptorFactoryInterface>>      creators;  creators.push_back(      std::unique_ptr<ServerStreamingRpcHijackingInterceptorFactory>(          new ServerStreamingRpcHijackingInterceptorFactory()));  auto channel = experimental::CreateCustomChannelWithInterceptors(      server_address_, InsecureChannelCredentials(), args, std::move(creators));  MakeServerStreamingCall(channel);  EXPECT_TRUE(ServerStreamingRpcHijackingInterceptor::GotFailedMessage());}TEST_F(ClientInterceptorsStreamingEnd2endTest, BidiStreamingHijackingTest) {  ChannelArguments args;  DummyInterceptor::Reset();  std::vector<std::unique_ptr<experimental::ClientInterceptorFactoryInterface>>      creators;  creators.push_back(      std::unique_ptr<BidiStreamingRpcHijackingInterceptorFactory>(          new BidiStreamingRpcHijackingInterceptorFactory()));  auto channel = experimental::CreateCustomChannelWithInterceptors(      server_address_, InsecureChannelCredentials(), args, std::move(creators));  MakeBidiStreamingCall(channel);}TEST_F(ClientInterceptorsStreamingEnd2endTest, BidiStreamingTest) {  ChannelArguments args;  DummyInterceptor::Reset();  std::vector<std::unique_ptr<experimental::ClientInterceptorFactoryInterface>>      creators;  creators.push_back(std::unique_ptr<LoggingInterceptorFactory>(      new LoggingInterceptorFactory()));  // Add 20 dummy interceptors  for (auto i = 0; i < 20; i++) {    creators.push_back(std::unique_ptr<DummyInterceptorFactory>(        new DummyInterceptorFactory()));  }  auto channel = experimental::CreateCustomChannelWithInterceptors(      server_address_, InsecureChannelCredentials(), args, std::move(creators));  MakeBidiStreamingCall(channel);  LoggingInterceptor::VerifyBidiStreamingCall();  // Make sure all 20 dummy interceptors were run  EXPECT_EQ(DummyInterceptor::GetNumTimesRun(), 20);}class ClientGlobalInterceptorEnd2endTest : public ::testing::Test { protected:  ClientGlobalInterceptorEnd2endTest() {    int port = grpc_pick_unused_port_or_die();    ServerBuilder builder;    server_address_ = "localhost:" + std::to_string(port);    builder.AddListeningPort(server_address_, InsecureServerCredentials());    builder.RegisterService(&service_);    server_ = builder.BuildAndStart();  }  ~ClientGlobalInterceptorEnd2endTest() { server_->Shutdown(); }  std::string server_address_;  TestServiceImpl service_;  std::unique_ptr<Server> server_;};TEST_F(ClientGlobalInterceptorEnd2endTest, DummyGlobalInterceptor) {  // We should ideally be registering a global interceptor only once per  // process, but for the purposes of testing, it should be fine to modify the  // registered global interceptor when there are no ongoing gRPC operations  DummyInterceptorFactory global_factory;  experimental::RegisterGlobalClientInterceptorFactory(&global_factory);  ChannelArguments args;  DummyInterceptor::Reset();  std::vector<std::unique_ptr<experimental::ClientInterceptorFactoryInterface>>      creators;  // Add 20 dummy interceptors  creators.reserve(20);  for (auto i = 0; i < 20; i++) {    creators.push_back(std::unique_ptr<DummyInterceptorFactory>(        new DummyInterceptorFactory()));  }  auto channel = experimental::CreateCustomChannelWithInterceptors(      server_address_, InsecureChannelCredentials(), args, std::move(creators));  MakeCall(channel);  // Make sure all 20 dummy interceptors were run with the global interceptor  EXPECT_EQ(DummyInterceptor::GetNumTimesRun(), 21);  experimental::TestOnlyResetGlobalClientInterceptorFactory();}TEST_F(ClientGlobalInterceptorEnd2endTest, LoggingGlobalInterceptor) {  // We should ideally be registering a global interceptor only once per  // process, but for the purposes of testing, it should be fine to modify the  // registered global interceptor when there are no ongoing gRPC operations  LoggingInterceptorFactory global_factory;  experimental::RegisterGlobalClientInterceptorFactory(&global_factory);  ChannelArguments args;  DummyInterceptor::Reset();  std::vector<std::unique_ptr<experimental::ClientInterceptorFactoryInterface>>      creators;  // Add 20 dummy interceptors  creators.reserve(20);  for (auto i = 0; i < 20; i++) {    creators.push_back(std::unique_ptr<DummyInterceptorFactory>(        new DummyInterceptorFactory()));  }  auto channel = experimental::CreateCustomChannelWithInterceptors(      server_address_, InsecureChannelCredentials(), args, std::move(creators));  MakeCall(channel);  LoggingInterceptor::VerifyUnaryCall();  // Make sure all 20 dummy interceptors were run  EXPECT_EQ(DummyInterceptor::GetNumTimesRun(), 20);  experimental::TestOnlyResetGlobalClientInterceptorFactory();}TEST_F(ClientGlobalInterceptorEnd2endTest, HijackingGlobalInterceptor) {  // We should ideally be registering a global interceptor only once per  // process, but for the purposes of testing, it should be fine to modify the  // registered global interceptor when there are no ongoing gRPC operations  HijackingInterceptorFactory global_factory;  experimental::RegisterGlobalClientInterceptorFactory(&global_factory);  ChannelArguments args;  DummyInterceptor::Reset();  std::vector<std::unique_ptr<experimental::ClientInterceptorFactoryInterface>>      creators;  // Add 20 dummy interceptors  creators.reserve(20);  for (auto i = 0; i < 20; i++) {    creators.push_back(std::unique_ptr<DummyInterceptorFactory>(        new DummyInterceptorFactory()));  }  auto channel = experimental::CreateCustomChannelWithInterceptors(      server_address_, InsecureChannelCredentials(), args, std::move(creators));  MakeCall(channel);  // Make sure all 20 dummy interceptors were run  EXPECT_EQ(DummyInterceptor::GetNumTimesRun(), 20);  experimental::TestOnlyResetGlobalClientInterceptorFactory();}}  // namespace}  // namespace testing}  // namespace grpcint main(int argc, char** argv) {  grpc::testing::TestEnvironment env(argc, argv);  ::testing::InitGoogleTest(&argc, argv);  return RUN_ALL_TESTS();}
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