.NET Core(.NET6)中gRPC注册到Consul
2022-04-18 10:52:01
一、简介
上一篇文章介绍了.NET Core 中使用gRPC，在微服务中，我们通常要把服务做成服务注册，服务发现的方式，那么这里来说一下gRPC是如何注册到Consul中的。
Consul的安装这里就不介绍了，在之前的篇文章中已经写过：Consul+Ocelot+Polly在.NetCore中使用(.NET5)-Consul服务注册，服务发现
这里Consul已经安装好。
二、gRPC注册到Consul
1.扩展gRPC注册到Consul封装类
这里沿用上一篇的gRPC的代码，如果服务带api和gRPC的话用http的方式或gRPC的方式注册到可以，http的方式上面文章中的Consul注册和发现中已经有，这里介绍单gRPC的服务的注册。
先在appsettings.json中加入Consul信息代码
{ "Logging": { "LogLevel": { "Default": "Information", "Microsoft.AspNetCore": "Warning" } }, "AllowedHosts": "*", "Kestrel": { "EndpointDefaults": { "Protocols": "Http2" } }, "Consul": { "consulAddress": "http://127.0.0.1:8500", "serviceName": "api_gRPC", "currentIp": "127.0.0.1", "currentPort": "5246" } }
然后新建ConsulRegister.cs封装注册到Consul的类
/// <summary> /// Consul注册 /// </summary> public static class ConsulRegister { //服务注册 public static IApplicationBuilder UseConsul(this IApplicationBuilder app, IConfiguration configuration) { // 获取主机生命周期管理接口 var lifetime = app.ApplicationServices.GetRequiredService<IHostApplicationLifetime>(); ConsulClient client = new ConsulClient(c => { c.Address = new Uri(configuration["Consul:consulAddress"]); c.Datacenter = "dc1"; }); string ip = configuration["ip"]; //优先接收变量的值 string port = configuration["port"]; //优先接收变量的值 string currentIp = configuration["Consul:currentIP"]; string currentPort = configuration["Consul:currentPort"]; ip = string.IsNullOrEmpty(ip) ? currentIp : ip; //当前程序的IP port = string.IsNullOrEmpty(port) ? currentPort : port; //当前程序的端口 string serviceId = $"service:{ip}:{port}";//服务ID，一个服务是唯一的 //服务注册 client.Agent.ServiceRegister(new AgentServiceRegistration() { ID = serviceId, //唯一的 Name = configuration["Consul:serviceName"], //组名称-Group Address = ip, //ip地址 Port = int.Parse(port), //端口 Tags = new string[] { "api站点" }, Check = new AgentServiceCheck() { Interval = TimeSpan.FromSeconds(10),//多久检查一次心跳 GRPC = $"{ip}:{port}", //gRPC注册特有 GRPCUseTLS=false,//支持http Timeout = TimeSpan.FromSeconds(5),//超时时间 DeregisterCriticalServiceAfter = TimeSpan.FromSeconds(5) //服务停止多久后注销服务 } }).Wait(); //应用程序终止时,注销服务 lifetime.ApplicationStopping.Register(() => { client.Agent.ServiceDeregister(serviceId).Wait(); }); return app; } }
Program.cs增加使用这个扩展类
using GrpcDemo.Service.Services; using GrpcDemo.Service.Utils; var builder = WebApplication.CreateBuilder(args); // Additional configuration is required to successfully run gRPC on macOS. // For instructions on how to configure Kestrel and gRPC clients on macOS, visit https://go.microsoft.com/fwlink/?linkid=2099682 // Add services to the container. builder.Services.AddGrpc(); var app = builder.Build(); IConfiguration _configuration = builder.Configuration; // Configure the HTTP request pipeline. app.MapGrpcService<GreeterService>(); app.MapGrpcService<OrderService>(); app.MapGrpcService<HealthCheckService>(); app.MapGet("/", () => "Communication with gRPC endpoints must be made through a gRPC client. To learn how to create a client, visit: https://go.microsoft.com/fwlink/?linkid=2086909"); app.UseConsul(_configuration); app.Run();
2.创建健康检查gRPC服务
1.新建健康检查proto文件HealthCheck.proto
syntax = "proto3"; package grpc.health.v1; message HealthCheckRequest { string service = 1; } message HealthCheckResponse { enum ServingStatus { UNKNOWN = 0; SERVING = 1; NOT_SERVING = 2; } ServingStatus status = 1; } service Health { rpc Check(HealthCheckRequest) returns (HealthCheckResponse); rpc Watch(HealthCheckRequest) returns (stream HealthCheckResponse); }
2.新建健康检查服务实现上面proto协议HealthCheckService.cs
public class HealthCheckService : Health.HealthBase { public override Task<HealthCheckResponse> Check(HealthCheckRequest request, ServerCallContext context) { Console.WriteLine($"This is {nameof(HealthCheckService)} Check "); //TODO:检查逻辑 return Task.FromResult(new HealthCheckResponse() { Status = HealthCheckResponse.Types.ServingStatus.Serving }); } public override async Task Watch(HealthCheckRequest request, IServerStreamWriter<HealthCheckResponse> responseStream, ServerCallContext context) { //TODO:检查逻辑 await responseStream.WriteAsync(new HealthCheckResponse() { Status = HealthCheckResponse.Types.ServingStatus.Serving }); } }
3.在Program.cs中把服务注册到gRPC管道
using GrpcDemo.Service.Services; using GrpcDemo.Service.Utils; var builder = WebApplication.CreateBuilder(args); // Additional configuration is required to successfully run gRPC on macOS. // For instructions on how to configure Kestrel and gRPC clients on macOS, visit https://go.microsoft.com/fwlink/?linkid=2099682 // Add services to the container. builder.Services.AddGrpc(); //配置获取 var app = builder.Build(); IConfiguration _configuration = builder.Configuration; // Configure the HTTP request pipeline. app.MapGrpcService<GreeterService>(); app.MapGrpcService<OrderService>(); app.MapGrpcService<HealthCheckService>(); app.MapGet("/", () => "Communication with gRPC endpoints must be made through a gRPC client. To learn how to create a client, visit: https://go.microsoft.com/fwlink/?linkid=2086909"); app.UseConsul(_configuration); app.Run();
到这里服务注册就完成了，服务发现和上面简介的链接文章中一模一样，启动项目查看效果。
本文摘自 ：https://www.cnblogs.com/
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