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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 <atomic>
#include <thread>
#include <grpc/grpc.h>
#include <grpc/support/alloc.h>
#include <grpcpp/security/server_credentials.h>
#include <grpcpp/server.h>
#include <grpcpp/server_context.h>
#include "src/core/lib/gpr/host_port.h"
#include "src/proto/grpc/testing/benchmark_service.grpc.pb.h"
#include "test/cpp/qps/qps_server_builder.h"
#include "test/cpp/qps/server.h"
#include "test/cpp/qps/usage_timer.h"
namespace grpc {
namespace testing {
class BenchmarkServiceImpl final : public BenchmarkService::Service {
public:
Status UnaryCall(ServerContext* context, const SimpleRequest* request,
SimpleResponse* response) override {
auto s = SetResponse(request, response);
if (!s.ok()) {
return s;
}
return Status::OK;
}
Status StreamingCall(
ServerContext* context,
ServerReaderWriter<SimpleResponse, SimpleRequest>* stream) override {
SimpleRequest request;
while (stream->Read(&request)) {
SimpleResponse response;
auto s = SetResponse(&request, &response);
if (!s.ok()) {
return s;
}
if (!stream->Write(response)) {
return Status(StatusCode::INTERNAL, "Server couldn't respond");
}
}
return Status::OK;
}
Status StreamingFromClient(ServerContext* context,
ServerReader<SimpleRequest>* stream,
SimpleResponse* response) override {
auto s = ClientPull(context, stream, response);
if (!s.ok()) {
return s;
}
return Status::OK;
}
Status StreamingFromServer(ServerContext* context,
const SimpleRequest* request,
ServerWriter<SimpleResponse>* stream) override {
SimpleResponse response;
auto s = SetResponse(request, &response);
if (!s.ok()) {
return s;
}
return ServerPush(context, stream, response, nullptr);
}
Status StreamingBothWays(
ServerContext* context,
ServerReaderWriter<SimpleResponse, SimpleRequest>* stream) override {
// Read the first client message to setup server response
SimpleRequest request;
if (!stream->Read(&request)) {
return Status::OK;
}
SimpleResponse response;
auto s = SetResponse(&request, &response);
if (!s.ok()) {
return s;
}
std::atomic_bool done;
Status sp;
std::thread t([context, stream, &response, &done, &sp]() {
sp = ServerPush(context, stream, response, [&done]() {
return done.load(std::memory_order_relaxed);
});
});
SimpleResponse dummy;
auto cp = ClientPull(context, stream, &dummy);
done.store(true, std::memory_order_relaxed); // can be lazy
t.join();
if (!cp.ok()) {
return cp;
}
if (!sp.ok()) {
return sp;
}
return Status::OK;
}
private:
template <class R>
static Status ClientPull(ServerContext* context, R* stream,
SimpleResponse* response) {
SimpleRequest request;
while (stream->Read(&request)) {
}
if (request.response_size() > 0) {
if (!Server::SetPayload(request.response_type(), request.response_size(),
response->mutable_payload())) {
return Status(grpc::StatusCode::INTERNAL, "Error creating payload.");
}
}
return Status::OK;
}
template <class W>
static Status ServerPush(ServerContext* context, W* stream,
const SimpleResponse& response,
const std::function<bool()>& done) {
while ((done == nullptr) || !done()) {
// TODO(vjpai): Add potential for rate-pacing on this
if (!stream->Write(response)) {
return Status(StatusCode::INTERNAL, "Server couldn't push");
}
}
return Status::OK;
}
static Status SetResponse(const SimpleRequest* request,
SimpleResponse* response) {
if (request->response_size() > 0) {
if (!Server::SetPayload(request->response_type(),
request->response_size(),
response->mutable_payload())) {
return Status(grpc::StatusCode::INTERNAL, "Error creating payload.");
}
}
return Status::OK;
}
};
class SynchronousServer final : public grpc::testing::Server {
public:
explicit SynchronousServer(const ServerConfig& config) : Server(config) {
std::unique_ptr<ServerBuilder> builder = CreateQpsServerBuilder();
auto port_num = port();
// Negative port number means inproc server, so no listen port needed
if (port_num >= 0) {
char* server_address = nullptr;
gpr_join_host_port(&server_address, "::", port_num);
builder->AddListeningPort(server_address,
Server::CreateServerCredentials(config));
gpr_free(server_address);
}
ApplyConfigToBuilder(config, builder.get());
builder->RegisterService(&service_);
impl_ = builder->BuildAndStart();
}
std::shared_ptr<Channel> InProcessChannel(
const ChannelArguments& args) override {
return impl_->InProcessChannel(args);
}
private:
BenchmarkServiceImpl service_;
std::unique_ptr<grpc::Server> impl_;
};
std::unique_ptr<grpc::testing::Server> CreateSynchronousServer(
const ServerConfig& config) {
return std::unique_ptr<Server>(new SynchronousServer(config));
}
} // namespace testing
} // namespace grpc
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