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/*
*
* 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.
*
*/
#include <memory>
#include <thread>
#include <gtest/gtest.h>
#include "absl/memory/memory.h"
#include <grpc/grpc.h>
#include <grpc/support/time.h>
#include <grpcpp/channel.h>
#include <grpcpp/client_context.h>
#include <grpcpp/create_channel.h>
#include <grpcpp/generic/async_generic_service.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/slice.h>
#include "src/proto/grpc/testing/echo.grpc.pb.h"
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#include "test/core/util/port.h"
#include "test/core/util/test_config.h"
#include "test/cpp/util/byte_buffer_proto_helper.h"
namespace grpc {
namespace testing {
namespace {
void* tag(int i) { return reinterpret_cast<void*>(i); }
void verify_ok(CompletionQueue* cq, int i, bool expect_ok) {
bool ok;
void* got_tag;
EXPECT_TRUE(cq->Next(&got_tag, &ok));
EXPECT_EQ(expect_ok, ok);
EXPECT_EQ(tag(i), got_tag);
}
class GenericEnd2endTest : public ::testing::Test {
protected:
GenericEnd2endTest() : server_host_("localhost") {}
void SetUp() override {
shut_down_ = false;
int port = grpc_pick_unused_port_or_die();
server_address_ << server_host_ << ":" << port;
// Setup server
ServerBuilder builder;
builder.AddListeningPort(server_address_.str(),
InsecureServerCredentials());
builder.RegisterAsyncGenericService(&generic_service_);
// Include a second call to RegisterAsyncGenericService to make sure that
// we get an error in the log, since it is not allowed to have 2 async
// generic services
builder.RegisterAsyncGenericService(&generic_service_);
srv_cq_ = builder.AddCompletionQueue();
server_ = builder.BuildAndStart();
}
void ShutDownServerAndCQs() {
if (!shut_down_) {
server_->Shutdown();
void* ignored_tag;
bool ignored_ok;
cli_cq_.Shutdown();
srv_cq_->Shutdown();
while (cli_cq_.Next(&ignored_tag, &ignored_ok)) {
}
while (srv_cq_->Next(&ignored_tag, &ignored_ok)) {
}
shut_down_ = true;
}
}
void TearDown() override { ShutDownServerAndCQs(); }
void ResetStub() {
std::shared_ptr<Channel> channel = grpc::CreateChannel(
server_address_.str(), InsecureChannelCredentials());
stub_ = grpc::testing::EchoTestService::NewStub(channel);
generic_stub_ = std::make_unique<GenericStub>(channel);
}
void server_ok(int i) { verify_ok(srv_cq_.get(), i, true); }
void client_ok(int i) { verify_ok(&cli_cq_, i, true); }
void server_fail(int i) { verify_ok(srv_cq_.get(), i, false); }
void client_fail(int i) { verify_ok(&cli_cq_, i, false); }
void SendRpc(int num_rpcs) {
SendRpc(num_rpcs, false, gpr_inf_future(GPR_CLOCK_MONOTONIC));
}
void SendRpc(int num_rpcs, bool check_deadline, gpr_timespec deadline) {
const std::string kMethodName("/grpc.cpp.test.util.EchoTestService/Echo");
for (int i = 0; i < num_rpcs; i++) {
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 world. Hello world. Hello world.");
if (check_deadline) {
cli_ctx.set_deadline(deadline);
}
// Rather than using the original kMethodName, make a short-lived
// copy to also confirm that we don't refer to this object beyond
// the initial call preparation
const std::string* method_name = new std::string(kMethodName);
std::unique_ptr<GenericClientAsyncReaderWriter> call =
generic_stub_->PrepareCall(&cli_ctx, *method_name, &cli_cq_);
delete method_name; // Make sure that this is not needed after invocation
std::thread request_call([this]() { server_ok(4); });
call->StartCall(tag(1));
client_ok(1);
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();
client_ok(2);
call->WritesDone(tag(3));
client_ok(3);
generic_service_.RequestCall(&srv_ctx, &stream, srv_cq_.get(),
srv_cq_.get(), tag(4));
request_call.join();
EXPECT_EQ(server_host_, srv_ctx.host().substr(0, server_host_.length()));
EXPECT_EQ(kMethodName, srv_ctx.method());
if (check_deadline) {
EXPECT_TRUE(gpr_time_similar(deadline, srv_ctx.raw_deadline(),
gpr_time_from_millis(1000, GPR_TIMESPAN)));
}
ByteBuffer recv_buffer;
stream.Read(&recv_buffer, tag(5));
server_ok(5);
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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();
server_ok(6);
stream.Finish(Status::OK, tag(7));
server_ok(7);
recv_buffer.Clear();
call->Read(&recv_buffer, tag(8));
client_ok(8);
EXPECT_TRUE(ParseFromByteBuffer(&recv_buffer, &recv_response));
call->Finish(&recv_status, tag(9));
client_ok(9);
EXPECT_EQ(send_response.message(), recv_response.message());
EXPECT_TRUE(recv_status.ok());
}
}
// Return errors to up to one call that comes in on the supplied completion
// queue, until the CQ is being shut down (and therefore we can no longer
// enqueue further events).
void DriveCompletionQueue() {
enum class Event : uintptr_t {
kCallReceived,
kResponseSent,
};
// Request the call, but only if the main thread hasn't beaten us to
// shutting down the CQ.
grpc::GenericServerContext server_context;
grpc::GenericServerAsyncReaderWriter reader_writer(&server_context);
{
std::lock_guard<std::mutex> lock(shutting_down_mu_);
if (!shutting_down_) {
generic_service_.RequestCall(
&server_context, &reader_writer, srv_cq_.get(), srv_cq_.get(),
reinterpret_cast<void*>(Event::kCallReceived));
}
}
// Process events.
{
Event event;
bool ok;
while (srv_cq_->Next(reinterpret_cast<void**>(&event), &ok)) {
std::lock_guard<std::mutex> lock(shutting_down_mu_);
if (shutting_down_) {
// The main thread has started shutting down. Simply continue to drain
// events.
continue;
}
switch (event) {
case Event::kCallReceived:
reader_writer.Finish(
grpc::Status(grpc::StatusCode::UNIMPLEMENTED, "go away"),
reinterpret_cast<void*>(Event::kResponseSent));
break;
case Event::kResponseSent:
// We are done.
break;
}
}
}
}
CompletionQueue cli_cq_;
std::unique_ptr<ServerCompletionQueue> srv_cq_;
std::unique_ptr<grpc::testing::EchoTestService::Stub> stub_;
std::unique_ptr<grpc::GenericStub> generic_stub_;
std::unique_ptr<Server> server_;
AsyncGenericService generic_service_;
const std::string server_host_;
std::ostringstream server_address_;
bool shutting_down_;
bool shut_down_;
std::mutex shutting_down_mu_;
};
TEST_F(GenericEnd2endTest, SimpleRpc) {
ResetStub();
SendRpc(1);
}
TEST_F(GenericEnd2endTest, SequentialRpcs) {
ResetStub();
SendRpc(10);
}
TEST_F(GenericEnd2endTest, SequentialUnaryRpcs) {
ResetStub();
const int num_rpcs = 10;
const std::string kMethodName("/grpc.cpp.test.util.EchoTestService/Echo");
for (int i = 0; i < num_rpcs; i++) {
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 world. Hello world. Hello world.");
std::unique_ptr<ByteBuffer> cli_send_buffer =
SerializeToByteBuffer(&send_request);
std::thread request_call([this]() { server_ok(4); });
std::unique_ptr<GenericClientAsyncResponseReader> call =
generic_stub_->PrepareUnaryCall(&cli_ctx, kMethodName, *cli_send_buffer,
&cli_cq_);
call->StartCall();
ByteBuffer cli_recv_buffer;
call->Finish(&cli_recv_buffer, &recv_status, tag(1));
std::thread client_check([this] { client_ok(1); });
generic_service_.RequestCall(&srv_ctx, &stream, srv_cq_.get(),
srv_cq_.get(), tag(4));
request_call.join();
EXPECT_EQ(server_host_, srv_ctx.host().substr(0, server_host_.length()));
EXPECT_EQ(kMethodName, srv_ctx.method());
ByteBuffer srv_recv_buffer;
stream.Read(&srv_recv_buffer, tag(5));
server_ok(5);
EXPECT_TRUE(ParseFromByteBuffer(&srv_recv_buffer, &recv_request));
EXPECT_EQ(send_request.message(), recv_request.message());
send_response.set_message(recv_request.message());
std::unique_ptr<ByteBuffer> srv_send_buffer =
SerializeToByteBuffer(&send_response);
stream.Write(*srv_send_buffer, tag(6));
server_ok(6);
stream.Finish(Status::OK, tag(7));
server_ok(7);
client_check.join();
EXPECT_TRUE(ParseFromByteBuffer(&cli_recv_buffer, &recv_response));
EXPECT_EQ(send_response.message(), recv_response.message());
EXPECT_TRUE(recv_status.ok());
}
}
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// One ping, one pong.
TEST_F(GenericEnd2endTest, SimpleBidiStreaming) {
ResetStub();
const std::string kMethodName(
"/grpc.cpp.test.util.EchoTestService/BidiStream");
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EchoRequest send_request;
EchoRequest recv_request;
EchoResponse send_response;
EchoResponse recv_response;
Status recv_status;
ClientContext cli_ctx;
GenericServerContext srv_ctx;
GenericServerAsyncReaderWriter srv_stream(&srv_ctx);
cli_ctx.set_compression_algorithm(GRPC_COMPRESS_GZIP);
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send_request.set_message("Hello");
std::thread request_call([this]() { server_ok(2); });
std::unique_ptr<GenericClientAsyncReaderWriter> cli_stream =
generic_stub_->PrepareCall(&cli_ctx, kMethodName, &cli_cq_);
cli_stream->StartCall(tag(1));
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client_ok(1);
generic_service_.RequestCall(&srv_ctx, &srv_stream, srv_cq_.get(),
srv_cq_.get(), tag(2));
request_call.join();
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EXPECT_EQ(server_host_, srv_ctx.host().substr(0, server_host_.length()));
EXPECT_EQ(kMethodName, srv_ctx.method());
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std::unique_ptr<ByteBuffer> send_buffer =
SerializeToByteBuffer(&send_request);
cli_stream->Write(*send_buffer, tag(3));
send_buffer.reset();
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client_ok(3);
ByteBuffer recv_buffer;
srv_stream.Read(&recv_buffer, tag(4));
server_ok(4);
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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);
srv_stream.Write(*send_buffer, tag(5));
send_buffer.reset();
server_ok(5);
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cli_stream->Read(&recv_buffer, tag(6));
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client_ok(6);
EXPECT_TRUE(ParseFromByteBuffer(&recv_buffer, &recv_response));
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EXPECT_EQ(send_response.message(), recv_response.message());
cli_stream->WritesDone(tag(7));
client_ok(7);
srv_stream.Read(&recv_buffer, tag(8));
server_fail(8);
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srv_stream.Finish(Status::OK, tag(9));
server_ok(9);
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cli_stream->Finish(&recv_status, tag(10));
client_ok(10);
EXPECT_EQ(send_response.message(), recv_response.message());
EXPECT_TRUE(recv_status.ok());
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}
TEST_F(GenericEnd2endTest, Deadline) {
ResetStub();
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SendRpc(1, true,
gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC),
gpr_time_from_seconds(10, GPR_TIMESPAN)));
}
TEST_F(GenericEnd2endTest, ShortDeadline) {
ResetStub();
ClientContext cli_ctx;
EchoRequest request;
EchoResponse response;
shutting_down_ = false;
std::thread driver([this] { DriveCompletionQueue(); });
request.set_message("");
cli_ctx.set_deadline(gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC),
gpr_time_from_micros(500, GPR_TIMESPAN)));
Status s = stub_->Echo(&cli_ctx, request, &response);
EXPECT_FALSE(s.ok());
{
std::lock_guard<std::mutex> lock(shutting_down_mu_);
shutting_down_ = true;
}
ShutDownServerAndCQs();
driver.join();
}
} // namespace
} // namespace testing
} // namespace grpc
int main(int argc, char** argv) {
grpc::testing::TestEnvironment env(&argc, argv);
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}