RPC这个概念大家都应该很熟悉了,这里不在累述了;使用场景可以参考这篇,本篇主要分享下Thrift和Grpc在.Net Core环境下使用入门。Thirft或者Grps 都支持跨语言、跨平台的Rpc框架。编写IDL文件通过其强大的代码生成引擎生成C#代码,然后编写服务器端和客户端代码进行交互。
Thrift 入门demo
创建两个控制台程序(client和service端)和一个类库,三个项目都分别安装thrift包;
Install-Package apache-thrift-netcore -Version 0.9.3.2;
简单实现一个远程调用用户中心服务,获取用户信息;
项目截图如下:
步骤1:下载Thrift放到指定盘;
我的是放到E:\Thrift下。
步骤2:编写.thrift文件
namespace csharp Thrift.Contract service UserService{
User Get(:i32 id)
} struct User
{
: required i64 Id;
: required string Name;
: optional string Remark;
}
步骤3:生成对应的代码
执行命令:thrift.exe --gen csharp UserServices.thrift
会看到生成的文件
把生成的项目拷到Thrift.Contract项目下; 并新增一个实现类
public class UserServiceImpl : Iface
{
public User Get(int id)
{
return new User
{
Id=,
Name="成天",
Remark="热爱编程,热爱分享,热爱..."
};
}
}
步骤4:编写服务端
private const int port = ;
static void Main(string[] args)
{ Console.WriteLine("用户中心RPC Server已启动...");
TServerTransport transport = new TServerSocket(port);
var processor = new UserService.Processor(new UserServiceImpl());
TServer server = new TThreadedServer(processor, transport); //如果多个服务实现的话,也可以这样启动;
//var processor2 = new Manulife.DNC.MSAD.Contracts.PayoutService.Processor(new PayoutServiceImpl());
//var processorMulti = new Thrift.Protocol.TMultiplexedProcessor();
//processorMulti.RegisterProcessor("Service1", processor1);
//processorMulti.RegisterProcessor("Service2", processor2);
//TServer server = new TThreadedServer(processorMulti, transport);
// lanuch
server.Serve();
}
步骤5:编写客户端
static void Main(string[] args)
{
TTransport transport = new TSocket("localhost", );
TProtocol protocol = new TBinaryProtocol(transport); var client = new UserService.Client(protocol);
transport.Open(); var userResult = client.Get(); Console.Write($"rpc->UserResult:{userResult.Name},{userResult.Remark}" ); transport.Close(); Console.ReadKey();
}
然后运行服务端和客户端调用结果如下图:
Grpc 入门demo
Grpc代码工具通过nuget安装Grpc.Tools获取,把grpc_csharp_plugin和protoc放到对应的盘中;代码实现与thrift一样的需求;项目分别安装Grpc包
- Install-Package Google.Protobuf -Version 3.6.0
- Install-Package Grpc -Version 1.13.1
步骤1:编写.proto文件
syntax = "proto3"; option java_multiple_files = true;
option java_package = "io.grpc.examples.helloworld";
option java_outer_classname = "HelloWorldProto";
option objc_class_prefix = "HLW"; package Grpc.Contract; service UserService {
rpc GetUser (GetUserRequest) returns (GetUserResponse) {}
} message GetUserRequest {
int32 Id = ;
} message GetUserResponse {
int64 Id=;
string Name=;
string Remark=;
}
步骤2:生成对应的代码
执行命令:protoc.exe -I=. --csharp_out=. --grpc_out=. --plugin=protoc-gen-grpc=grpc_csharp_plugin.exe UserServices.proto
然后把生成的代码拷贝到Grpc.Contract;并新增一个实现类
public class UserServiceImpl: UserService.UserServiceBase
{ public override Task<GetUserResponse> GetUser(GetUserRequest request, ServerCallContext context)
{
return Task.FromResult(new GetUserResponse {
Id = ,
Name = "成天",
Remark = "热爱编程,热爱分享,热爱..."
});
}
}
步骤3:编写服务端
const int port = ;
static void Main(string[] args)
{ Console.WriteLine("用户中心RPC Server已启动...");
Server server = new Server
{
Services = { UserService.BindService(new UserServiceImpl()) },
Ports = { new ServerPort("localhost", port, ServerCredentials.Insecure) }
}; server.Start();
Console.ReadKey();
}
步骤4:编写客户端
Channel channel = new Channel("127.0.0.1:50051", ChannelCredentials.Insecure); var client = new UserService.UserServiceClient(channel); var userResult = client.GetUser(new GetUserRequest{ Id = });
Console.Write($"rpc->UserResult:{userResult.Name},{userResult.Remark}"); channel.ShutdownAsync().Wait();
Console.ReadKey();
然后运行服务端和客户端调用结果如下图:
到此这两种流行的rpc框架使用介绍完毕,是不是很简单。