The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#) https://grpc.io/
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/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <memory>
#include "test/core/util/port.h"
#include "test/core/util/test_config.h"
#include "test/cpp/util/echo_duplicate.grpc.pb.h"
#include "test/cpp/util/echo.grpc.pb.h"
#include <grpc++/async_unary_call.h>
#include <grpc++/channel_arguments.h>
#include <grpc++/channel_interface.h>
#include <grpc++/client_context.h>
#include <grpc++/create_channel.h>
#include <grpc++/credentials.h>
#include <grpc++/server.h>
#include <grpc++/server_builder.h>
#include <grpc++/server_context.h>
#include <grpc++/server_credentials.h>
#include <grpc++/status.h>
#include <grpc++/stream.h>
#include <grpc++/time.h>
#include <gtest/gtest.h>
#include <grpc/grpc.h>
#include <grpc/support/thd.h>
#include <grpc/support/time.h>
using grpc::cpp::test::util::EchoRequest;
using grpc::cpp::test::util::EchoResponse;
using std::chrono::system_clock;
namespace grpc {
namespace testing {
namespace {
void* tag(int i) { return (void*)(gpr_intptr) i; }
class Verifier {
public:
Verifier& Expect(int i, bool expect_ok) {
expectations_[tag(i)] = expect_ok;
return *this;
}
void Verify(CompletionQueue *cq) {
GPR_ASSERT(!expectations_.empty());
while (!expectations_.empty()) {
bool ok;
void* got_tag;
EXPECT_TRUE(cq->Next(&got_tag, &ok));
auto it = expectations_.find(got_tag);
EXPECT_TRUE(it != expectations_.end());
EXPECT_EQ(it->second, ok);
expectations_.erase(it);
}
}
void Verify(CompletionQueue *cq, std::chrono::system_clock::time_point deadline) {
if (expectations_.empty()) {
bool ok;
void *got_tag;
EXPECT_EQ(cq->AsyncNext(&got_tag, &ok, deadline), CompletionQueue::TIMEOUT);
} else {
while (!expectations_.empty()) {
bool ok;
void *got_tag;
EXPECT_EQ(cq->AsyncNext(&got_tag, &ok, deadline), CompletionQueue::GOT_EVENT);
auto it = expectations_.find(got_tag);
EXPECT_TRUE(it != expectations_.end());
EXPECT_EQ(it->second, ok);
expectations_.erase(it);
}
}
}
private:
std::map<void*, bool> expectations_;
};
class AsyncEnd2endTest : public ::testing::Test {
protected:
AsyncEnd2endTest() {}
void SetUp() GRPC_OVERRIDE {
int port = grpc_pick_unused_port_or_die();
server_address_ << "localhost:" << port;
// Setup server
ServerBuilder builder;
builder.AddListeningPort(server_address_.str(), grpc::InsecureServerCredentials());
builder.RegisterAsyncService(&service_);
cq_ = builder.AddCompletionQueue();
server_ = builder.BuildAndStart();
}
void TearDown() GRPC_OVERRIDE {
server_->Shutdown();
void* ignored_tag;
bool ignored_ok;
cq_->Shutdown();
while (cq_->Next(&ignored_tag, &ignored_ok))
;
}
void ResetStub() {
std::shared_ptr<ChannelInterface> channel = CreateChannel(
server_address_.str(), InsecureCredentials(), ChannelArguments());
stub_ = std::move(grpc::cpp::test::util::TestService::NewStub(channel));
}
void SendRpc(int num_rpcs) {
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;
ServerContext srv_ctx;
grpc::ServerAsyncResponseWriter<EchoResponse> response_writer(&srv_ctx);
send_request.set_message("Hello");
std::unique_ptr<ClientAsyncResponseReader<EchoResponse> > response_reader(
stub_->AsyncEcho(&cli_ctx, send_request, cq_.get()));
service_.RequestEcho(&srv_ctx, &recv_request, &response_writer,
cq_.get(), cq_.get(), tag(2));
Verifier().Expect(2, true).Verify(cq_.get());
EXPECT_EQ(send_request.message(), recv_request.message());
send_response.set_message(recv_request.message());
response_writer.Finish(send_response, Status::OK, tag(3));
Verifier().Expect(3, true).Verify(cq_.get());
response_reader->Finish(&recv_response, &recv_status, tag(4));
Verifier().Expect(4, true).Verify(cq_.get());
EXPECT_EQ(send_response.message(), recv_response.message());
EXPECT_TRUE(recv_status.ok());
}
}
std::unique_ptr<ServerCompletionQueue> cq_;
std::unique_ptr<grpc::cpp::test::util::TestService::Stub> stub_;
std::unique_ptr<Server> server_;
grpc::cpp::test::util::TestService::AsyncService service_;
std::ostringstream server_address_;
};
TEST_F(AsyncEnd2endTest, SimpleRpc) {
ResetStub();
SendRpc(1);
}
TEST_F(AsyncEnd2endTest, SequentialRpcs) {
ResetStub();
SendRpc(10);
}
// Test a simple RPC using the async version of Next
TEST_F(AsyncEnd2endTest, AsyncNextRpc) {
ResetStub();
EchoRequest send_request;
EchoRequest recv_request;
EchoResponse send_response;
EchoResponse recv_response;
Status recv_status;
ClientContext cli_ctx;
ServerContext srv_ctx;
grpc::ServerAsyncResponseWriter<EchoResponse> response_writer(&srv_ctx);
send_request.set_message("Hello");
std::unique_ptr<ClientAsyncResponseReader<EchoResponse> > response_reader(
stub_->AsyncEcho(&cli_ctx, send_request, cq_.get()));
std::chrono::system_clock::time_point time_now(
std::chrono::system_clock::now());
std::chrono::system_clock::time_point time_limit(
std::chrono::system_clock::now() + std::chrono::seconds(10));
Verifier().Verify(cq_.get(), time_now);
Verifier().Verify(cq_.get(), time_now);
service_.RequestEcho(&srv_ctx, &recv_request, &response_writer, cq_.get(),
cq_.get(), tag(2));
Verifier().Expect(2, true).Verify(cq_.get(), time_limit);
EXPECT_EQ(send_request.message(), recv_request.message());
send_response.set_message(recv_request.message());
response_writer.Finish(send_response, Status::OK, tag(3));
Verifier().Expect(3, true).Verify(cq_.get(), std::chrono::system_clock::time_point::max());
response_reader->Finish(&recv_response, &recv_status, tag(4));
Verifier().Expect(4, true).Verify(cq_.get(), std::chrono::system_clock::time_point::max());
EXPECT_EQ(send_response.message(), recv_response.message());
EXPECT_TRUE(recv_status.ok());
}
// Two pings and a final pong.
TEST_F(AsyncEnd2endTest, SimpleClientStreaming) {
ResetStub();
EchoRequest send_request;
EchoRequest recv_request;
EchoResponse send_response;
EchoResponse recv_response;
Status recv_status;
ClientContext cli_ctx;
ServerContext srv_ctx;
ServerAsyncReader<EchoResponse, EchoRequest> srv_stream(&srv_ctx);
send_request.set_message("Hello");
std::unique_ptr<ClientAsyncWriter<EchoRequest> > cli_stream(
stub_->AsyncRequestStream(&cli_ctx, &recv_response, cq_.get(), tag(1)));
service_.RequestRequestStream(&srv_ctx, &srv_stream, cq_.get(),
cq_.get(), tag(2));
Verifier().Expect(2, true).Expect(1, true).Verify(cq_.get());
cli_stream->Write(send_request, tag(3));
Verifier().Expect(3, true).Verify(cq_.get());
srv_stream.Read(&recv_request, tag(4));
Verifier().Expect(4, true).Verify(cq_.get());
EXPECT_EQ(send_request.message(), recv_request.message());
cli_stream->Write(send_request, tag(5));
Verifier().Expect(5, true).Verify(cq_.get());
srv_stream.Read(&recv_request, tag(6));
Verifier().Expect(6, true).Verify(cq_.get());
EXPECT_EQ(send_request.message(), recv_request.message());
cli_stream->WritesDone(tag(7));
Verifier().Expect(7, true).Verify(cq_.get());
srv_stream.Read(&recv_request, tag(8));
Verifier().Expect(8, false).Verify(cq_.get());
send_response.set_message(recv_request.message());
srv_stream.Finish(send_response, Status::OK, tag(9));
Verifier().Expect(9, true).Verify(cq_.get());
cli_stream->Finish(&recv_status, tag(10));
Verifier().Expect(10, true).Verify(cq_.get());
EXPECT_EQ(send_response.message(), recv_response.message());
EXPECT_TRUE(recv_status.ok());
}
// One ping, two pongs.
TEST_F(AsyncEnd2endTest, SimpleServerStreaming) {
ResetStub();
EchoRequest send_request;
EchoRequest recv_request;
EchoResponse send_response;
EchoResponse recv_response;
Status recv_status;
ClientContext cli_ctx;
ServerContext srv_ctx;
ServerAsyncWriter<EchoResponse> srv_stream(&srv_ctx);
send_request.set_message("Hello");
std::unique_ptr<ClientAsyncReader<EchoResponse> > cli_stream(
stub_->AsyncResponseStream(&cli_ctx, send_request, cq_.get(), tag(1)));
service_.RequestResponseStream(&srv_ctx, &recv_request, &srv_stream,
cq_.get(), cq_.get(), tag(2));
Verifier().Expect(1, true).Expect(2, true).Verify(cq_.get());
EXPECT_EQ(send_request.message(), recv_request.message());
send_response.set_message(recv_request.message());
srv_stream.Write(send_response, tag(3));
Verifier().Expect(3, true).Verify(cq_.get());
cli_stream->Read(&recv_response, tag(4));
Verifier().Expect(4, true).Verify(cq_.get());
EXPECT_EQ(send_response.message(), recv_response.message());
srv_stream.Write(send_response, tag(5));
Verifier().Expect(5, true).Verify(cq_.get());
cli_stream->Read(&recv_response, tag(6));
Verifier().Expect(6, true).Verify(cq_.get());
EXPECT_EQ(send_response.message(), recv_response.message());
srv_stream.Finish(Status::OK, tag(7));
Verifier().Expect(7, true).Verify(cq_.get());
cli_stream->Read(&recv_response, tag(8));
Verifier().Expect(8, false).Verify(cq_.get());
cli_stream->Finish(&recv_status, tag(9));
Verifier().Expect(9, true).Verify(cq_.get());
EXPECT_TRUE(recv_status.ok());
}
// One ping, one pong.
TEST_F(AsyncEnd2endTest, SimpleBidiStreaming) {
ResetStub();
EchoRequest send_request;
EchoRequest recv_request;
EchoResponse send_response;
EchoResponse recv_response;
Status recv_status;
ClientContext cli_ctx;
ServerContext srv_ctx;
ServerAsyncReaderWriter<EchoResponse, EchoRequest> srv_stream(&srv_ctx);
send_request.set_message("Hello");
std::unique_ptr<ClientAsyncReaderWriter<EchoRequest, EchoResponse> >
cli_stream(stub_->AsyncBidiStream(&cli_ctx, cq_.get(), tag(1)));
service_.RequestBidiStream(&srv_ctx, &srv_stream, cq_.get(),
cq_.get(), tag(2));
Verifier().Expect(1, true).Expect(2, true).Verify(cq_.get());
cli_stream->Write(send_request, tag(3));
Verifier().Expect(3, true).Verify(cq_.get());
srv_stream.Read(&recv_request, tag(4));
Verifier().Expect(4, true).Verify(cq_.get());
EXPECT_EQ(send_request.message(), recv_request.message());
send_response.set_message(recv_request.message());
srv_stream.Write(send_response, tag(5));
Verifier().Expect(5, true).Verify(cq_.get());
cli_stream->Read(&recv_response, tag(6));
Verifier().Expect(6, true).Verify(cq_.get());
EXPECT_EQ(send_response.message(), recv_response.message());
cli_stream->WritesDone(tag(7));
Verifier().Expect(7, true).Verify(cq_.get());
srv_stream.Read(&recv_request, tag(8));
Verifier().Expect(8, false).Verify(cq_.get());
srv_stream.Finish(Status::OK, tag(9));
Verifier().Expect(9, true).Verify(cq_.get());
cli_stream->Finish(&recv_status, tag(10));
Verifier().Expect(10, true).Verify(cq_.get());
EXPECT_TRUE(recv_status.ok());
}
// Metadata tests
TEST_F(AsyncEnd2endTest, ClientInitialMetadataRpc) {
ResetStub();
EchoRequest send_request;
EchoRequest recv_request;
EchoResponse send_response;
EchoResponse recv_response;
Status recv_status;
ClientContext cli_ctx;
ServerContext srv_ctx;
grpc::ServerAsyncResponseWriter<EchoResponse> response_writer(&srv_ctx);
send_request.set_message("Hello");
std::pair<grpc::string, grpc::string> meta1("key1", "val1");
std::pair<grpc::string, grpc::string> meta2("key2", "val2");
cli_ctx.AddMetadata(meta1.first, meta1.second);
cli_ctx.AddMetadata(meta2.first, meta2.second);
std::unique_ptr<ClientAsyncResponseReader<EchoResponse> > response_reader(
stub_->AsyncEcho(&cli_ctx, send_request, cq_.get()));
service_.RequestEcho(&srv_ctx, &recv_request, &response_writer, cq_.get(),
cq_.get(), tag(2));
Verifier().Expect(2, true).Verify(cq_.get());
EXPECT_EQ(send_request.message(), recv_request.message());
auto client_initial_metadata = srv_ctx.client_metadata();
EXPECT_EQ(meta1.second, client_initial_metadata.find(meta1.first)->second);
EXPECT_EQ(meta2.second, client_initial_metadata.find(meta2.first)->second);
EXPECT_GE(client_initial_metadata.size(), static_cast<size_t>(2));
send_response.set_message(recv_request.message());
response_writer.Finish(send_response, Status::OK, tag(3));
Verifier().Expect(3, true).Verify(cq_.get());
response_reader->Finish(&recv_response, &recv_status, tag(4));
Verifier().Expect(4, true).Verify(cq_.get());
EXPECT_EQ(send_response.message(), recv_response.message());
EXPECT_TRUE(recv_status.ok());
}
TEST_F(AsyncEnd2endTest, ServerInitialMetadataRpc) {
ResetStub();
EchoRequest send_request;
EchoRequest recv_request;
EchoResponse send_response;
EchoResponse recv_response;
Status recv_status;
ClientContext cli_ctx;
ServerContext srv_ctx;
grpc::ServerAsyncResponseWriter<EchoResponse> response_writer(&srv_ctx);
send_request.set_message("Hello");
std::pair<grpc::string, grpc::string> meta1("key1", "val1");
std::pair<grpc::string, grpc::string> meta2("key2", "val2");
std::unique_ptr<ClientAsyncResponseReader<EchoResponse> > response_reader(
stub_->AsyncEcho(&cli_ctx, send_request, cq_.get()));
service_.RequestEcho(&srv_ctx, &recv_request, &response_writer, cq_.get(),
cq_.get(), tag(2));
Verifier().Expect(2, true).Verify(cq_.get());
EXPECT_EQ(send_request.message(), recv_request.message());
srv_ctx.AddInitialMetadata(meta1.first, meta1.second);
srv_ctx.AddInitialMetadata(meta2.first, meta2.second);
response_writer.SendInitialMetadata(tag(3));
Verifier().Expect(3, true).Verify(cq_.get());
response_reader->ReadInitialMetadata(tag(4));
Verifier().Expect(4, true).Verify(cq_.get());
auto server_initial_metadata = cli_ctx.GetServerInitialMetadata();
EXPECT_EQ(meta1.second, server_initial_metadata.find(meta1.first)->second);
EXPECT_EQ(meta2.second, server_initial_metadata.find(meta2.first)->second);
EXPECT_EQ(static_cast<size_t>(2), server_initial_metadata.size());
send_response.set_message(recv_request.message());
response_writer.Finish(send_response, Status::OK, tag(5));
Verifier().Expect(5, true).Verify(cq_.get());
response_reader->Finish(&recv_response, &recv_status, tag(6));
Verifier().Expect(6, true).Verify(cq_.get());
EXPECT_EQ(send_response.message(), recv_response.message());
EXPECT_TRUE(recv_status.ok());
}
TEST_F(AsyncEnd2endTest, ServerTrailingMetadataRpc) {
ResetStub();
EchoRequest send_request;
EchoRequest recv_request;
EchoResponse send_response;
EchoResponse recv_response;
Status recv_status;
ClientContext cli_ctx;
ServerContext srv_ctx;
grpc::ServerAsyncResponseWriter<EchoResponse> response_writer(&srv_ctx);
send_request.set_message("Hello");
std::pair<grpc::string, grpc::string> meta1("key1", "val1");
std::pair<grpc::string, grpc::string> meta2("key2", "val2");
std::unique_ptr<ClientAsyncResponseReader<EchoResponse> > response_reader(
stub_->AsyncEcho(&cli_ctx, send_request, cq_.get()));
service_.RequestEcho(&srv_ctx, &recv_request, &response_writer, cq_.get(),
cq_.get(), tag(2));
Verifier().Expect(2, true).Verify(cq_.get());
EXPECT_EQ(send_request.message(), recv_request.message());
response_writer.SendInitialMetadata(tag(3));
Verifier().Expect(3, true).Verify(cq_.get());
send_response.set_message(recv_request.message());
srv_ctx.AddTrailingMetadata(meta1.first, meta1.second);
srv_ctx.AddTrailingMetadata(meta2.first, meta2.second);
response_writer.Finish(send_response, Status::OK, tag(4));
Verifier().Expect(4, true).Verify(cq_.get());
response_reader->Finish(&recv_response, &recv_status, tag(5));
Verifier().Expect(5, true).Verify(cq_.get());
EXPECT_EQ(send_response.message(), recv_response.message());
EXPECT_TRUE(recv_status.ok());
auto server_trailing_metadata = cli_ctx.GetServerTrailingMetadata();
EXPECT_EQ(meta1.second, server_trailing_metadata.find(meta1.first)->second);
EXPECT_EQ(meta2.second, server_trailing_metadata.find(meta2.first)->second);
EXPECT_EQ(static_cast<size_t>(2), server_trailing_metadata.size());
}
TEST_F(AsyncEnd2endTest, MetadataRpc) {
ResetStub();
EchoRequest send_request;
EchoRequest recv_request;
EchoResponse send_response;
EchoResponse recv_response;
Status recv_status;
ClientContext cli_ctx;
ServerContext srv_ctx;
grpc::ServerAsyncResponseWriter<EchoResponse> response_writer(&srv_ctx);
send_request.set_message("Hello");
std::pair<grpc::string, grpc::string> meta1("key1", "val1");
std::pair<grpc::string, grpc::string> meta2(
"key2-bin",
grpc::string("\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc",
13));
std::pair<grpc::string, grpc::string> meta3("key3", "val3");
std::pair<grpc::string, grpc::string> meta6(
"key4-bin",
grpc::string("\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d",
14));
std::pair<grpc::string, grpc::string> meta5("key5", "val5");
std::pair<grpc::string, grpc::string> meta4(
"key6-bin",
grpc::string("\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee",
15));
cli_ctx.AddMetadata(meta1.first, meta1.second);
cli_ctx.AddMetadata(meta2.first, meta2.second);
std::unique_ptr<ClientAsyncResponseReader<EchoResponse> > response_reader(
stub_->AsyncEcho(&cli_ctx, send_request, cq_.get()));
service_.RequestEcho(&srv_ctx, &recv_request, &response_writer, cq_.get(),
cq_.get(), tag(2));
Verifier().Expect(2, true).Verify(cq_.get());
EXPECT_EQ(send_request.message(), recv_request.message());
auto client_initial_metadata = srv_ctx.client_metadata();
EXPECT_EQ(meta1.second, client_initial_metadata.find(meta1.first)->second);
EXPECT_EQ(meta2.second, client_initial_metadata.find(meta2.first)->second);
EXPECT_GE(client_initial_metadata.size(), static_cast<size_t>(2));
srv_ctx.AddInitialMetadata(meta3.first, meta3.second);
srv_ctx.AddInitialMetadata(meta4.first, meta4.second);
response_writer.SendInitialMetadata(tag(3));
Verifier().Expect(3, true).Verify(cq_.get());
response_reader->ReadInitialMetadata(tag(4));
Verifier().Expect(4, true).Verify(cq_.get());
auto server_initial_metadata = cli_ctx.GetServerInitialMetadata();
EXPECT_EQ(meta3.second, server_initial_metadata.find(meta3.first)->second);
EXPECT_EQ(meta4.second, server_initial_metadata.find(meta4.first)->second);
EXPECT_GE(server_initial_metadata.size(), static_cast<size_t>(2));
send_response.set_message(recv_request.message());
srv_ctx.AddTrailingMetadata(meta5.first, meta5.second);
srv_ctx.AddTrailingMetadata(meta6.first, meta6.second);
response_writer.Finish(send_response, Status::OK, tag(5));
Verifier().Expect(5, true).Verify(cq_.get());
response_reader->Finish(&recv_response, &recv_status, tag(6));
Verifier().Expect(6, true).Verify(cq_.get());
EXPECT_EQ(send_response.message(), recv_response.message());
EXPECT_TRUE(recv_status.ok());
auto server_trailing_metadata = cli_ctx.GetServerTrailingMetadata();
EXPECT_EQ(meta5.second, server_trailing_metadata.find(meta5.first)->second);
EXPECT_EQ(meta6.second, server_trailing_metadata.find(meta6.first)->second);
EXPECT_GE(server_trailing_metadata.size(), static_cast<size_t>(2));
}
} // namespace
} // namespace testing
} // namespace grpc
int main(int argc, char** argv) {
grpc_test_init(argc, argv);
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}