目录
摘要:
本文说明如何使用grpc进行c++服务器通过unixsocket进行通信
grpc编译安装:
grpc地址:
Tags · grpc/grpc · GitHub
备份地址:
grpc.tar.gz-互联网文档类资源-CSDN下载
编译方法:
使用git下载依赖库:
需要注意, 直接从github上clone下来的代码, 缺少第三方库, 需要执行
git submodule update --init此命令从git上下载需要的第三方库
使用cmake编译:
进入根目录后, 执行以下命令
mkdir -p ./build
cd ./build
cmake ..
make -j"$(nproc)"
make install
使用grpc完成unixsocket通信:
建立unixsocket位置在 /tmp/unixsocket-grpc
server端:
// Copyright 2021 the 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 <iostream>
#include <memory>
#include <string>
#ifdef BAZEL_BUILD
#include "examples/protos/helloworld.grpc.pb.h"
#else
#include "helloworld.grpc.pb.h"
#endif
#include <grpcpp/ext/proto_server_reflection_plugin.h>
#include <grpcpp/grpcpp.h>
#include <grpcpp/health_check_service_interface.h>
using grpc::Server;
using grpc::ServerBuilder;
using grpc::ServerContext;
using grpc::Status;
using helloworld::Greeter;
using helloworld::HelloReply;
using helloworld::HelloRequest;
// Logic and data behind the server's behavior.
class GreeterServiceImpl final : public Greeter::Service {
Status SayHello(ServerContext* context, const HelloRequest* request,
HelloReply* reply) override {
reply->set_message(request->name());
std::cout << "Echoing: " << request->name() << std::endl;
return Status::OK;
}
};
void RunServer() {
// std::string server_address("unix-abstract:grpc%00abstract");
std::string server_address("unix:/tmp/unixsocket-grpc");
GreeterServiceImpl service;
grpc::EnableDefaultHealthCheckService(true);
grpc::reflection::InitProtoReflectionServerBuilderPlugin();
ServerBuilder builder;
builder.AddListeningPort(server_address, grpc::InsecureServerCredentials());
builder.RegisterService(&service);
std::unique_ptr<Server> server(builder.BuildAndStart());
std::cout << "Server listening on " << server_address << " ... ";
server->Wait();
}
int main(int argc, char** argv) {
RunServer();
return 0;
}
client端:
// Copyright 2021 the 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 <iostream>
#include <memory>
#include <string>
#ifdef BAZEL_BUILD
#include "examples/protos/helloworld.grpc.pb.h"
#else
#include "helloworld.grpc.pb.h"
#endif
#include <grpcpp/grpcpp.h>
using grpc::Channel;
using grpc::ClientContext;
using grpc::Status;
using helloworld::Greeter;
using helloworld::HelloReply;
using helloworld::HelloRequest;
class GreeterClient {
public:
GreeterClient(std::shared_ptr<Channel> channel)
: stub_(Greeter::NewStub(channel)) {}
std::string SayHello(const std::string& user) {
HelloRequest request;
request.set_name(user);
HelloReply reply;
ClientContext context;
Status status = stub_->SayHello(&context, request, &reply);
if (status.ok()) {
return reply.message();
}
std::cout << status.error_code() << ": " << status.error_message()
<< std::endl;
return "RPC failed";
}
private:
std::unique_ptr<Greeter::Stub> stub_;
};
int main(int argc, char** argv) {
// std::string target_str("unix-abstract:grpc%00abstract");
std::string target_str("unix:/tmp/unixsocket-grpc");
GreeterClient greeter(
grpc::CreateChannel(target_str, grpc::InsecureChannelCredentials()));
std::string user("arst");
std::cout << "Sending '" << user << "' to " << target_str << " ... ";
std::string reply = greeter.SayHello(user);
std::cout << "Received: " << reply << std::endl;
return 0;
}
编译方式:
使用cmake
# 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.
#
# cmake build file for C++ helloworld example.
# Assumes protobuf and gRPC have been installed using cmake.
# See cmake_externalproject/CMakeLists.txt for all-in-one cmake build
# that automatically builds all the dependencies before building helloworld.
cmake_minimum_required(VERSION 3.5.1)
project(HelloWorld C CXX)
include(../cmake/common.cmake)
# Proto file
get_filename_component(hw_proto "../../protos/helloworld.proto" ABSOLUTE)
get_filename_component(hw_proto_path "${hw_proto}" PATH)
# Generated sources
set(hw_proto_srcs "${CMAKE_CURRENT_BINARY_DIR}/helloworld.pb.cc")
set(hw_proto_hdrs "${CMAKE_CURRENT_BINARY_DIR}/helloworld.pb.h")
set(hw_grpc_srcs "${CMAKE_CURRENT_BINARY_DIR}/helloworld.grpc.pb.cc")
set(hw_grpc_hdrs "${CMAKE_CURRENT_BINARY_DIR}/helloworld.grpc.pb.h")
add_custom_command(
OUTPUT "${hw_proto_srcs}" "${hw_proto_hdrs}" "${hw_grpc_srcs}" "${hw_grpc_hdrs}"
COMMAND ${_PROTOBUF_PROTOC}
ARGS --grpc_out "${CMAKE_CURRENT_BINARY_DIR}"
--cpp_out "${CMAKE_CURRENT_BINARY_DIR}"
-I "${hw_proto_path}"
--plugin=protoc-gen-grpc="${_GRPC_CPP_PLUGIN_EXECUTABLE}"
"${hw_proto}"
DEPENDS "${hw_proto}")
# Include generated *.pb.h files
include_directories("${CMAKE_CURRENT_BINARY_DIR}")
# hw_grpc_proto
add_library(hw_grpc_proto
${hw_grpc_srcs}
${hw_grpc_hdrs}
${hw_proto_srcs}
${hw_proto_hdrs})
target_link_libraries(hw_grpc_proto
${_REFLECTION}
${_GRPC_GRPCPP}
${_PROTOBUF_LIBPROTOBUF})
# Targets greeter_[async_](client|server)
foreach(_target
greeter_client greeter_server
greeter_callback_client greeter_callback_server
greeter_async_client greeter_async_client2 greeter_async_server)
add_executable(${_target} "${_target}.cc")
target_link_libraries(${_target}
hw_grpc_proto
${_REFLECTION}
${_GRPC_GRPCPP}
${_PROTOBUF_LIBPROTOBUF})
endforeach()
启动服务查看unixsocket:
服务端日志
root@localhost:~/work/github/grpc/examples/cpp/helloworld/build# ./greeter_server
Server listening on unix:/tmp/unixsocket-grpc ... Echoing: arst
客户端日志
root@localhost:~/work/github/grpc/examples/cpp/helloworld/build# ./greeter_client
Sending 'arst' to unix:/tmp/unixsocket-grpc ... Received: arst
查看unixsocket文件
root@localhost:~/work/github/grpc/examples/cpp/helloworld/build# file /tmp/unixsocket-grpc
/tmp/unixsocket-grpc: socket
