2022-02-18 使用grpc进行c++服务器的unixsocket通信

最新推荐文章于 2024-11-08 22:35:40 发布

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最新推荐文章于 2024-11-08 22:35:40 发布

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分类专栏：服务器开发文章标签： c++ 服务器 grpc unixsocket

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本文详细介绍了如何使用gRPC在C++中通过Unixsocket进行服务器间的通信，包括从git克隆依赖库、配置CMake编译、创建和连接Unixsocket，以及展示服务器和客户端的日志输出和文件检查。

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使用grpc完成unixsocket通信:

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-优快云下载

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