微服务中的心跳检查

关键代码

1 startup.cs文件中：

#region consul
this.Configuration.RegistConsul();
#endregion

2 扩展方法RegistConsul

public static class ConsulRegister
{
public static void RegistConsul(this IConfiguration configuration)
{
#region 注册consul
string ip = configuration["ip"] ?? "Localhost";
//部署到不同服务器的时候不能写成127.0.0.1或者0.0.0.0,因为这是让服务消费者调用的地址
//int port = int.Parse(configuration["Consul:ServicePort"]);//服务端口
int port = string.IsNullOrWhiteSpace(configuration["port"]) ? 44344 : int.Parse(configuration["port"]);
ConsulClient client = new ConsulClient(obj =>
{
obj.Address = new Uri("http://127.0.0.1:8500");
obj.Datacenter = "dc1";
});
//向consul注册服务
Task<WriteResult> result = client.Agent.ServiceRegister(new AgentServiceRegistration()
{
ID = "apiserviceTest_" + Guid.NewGuid(),//服务编号，不能重复
Name = "apiserviceTest",//服务的名字--将来调用时用的就是这个
Address = ip,
Port = port,
Tags =new string[] { } ,//可以用来设置权重
Check = new AgentServiceCheck()
{
DeregisterCriticalServiceAfter = TimeSpan.FromSeconds(5),//服务停止多久后反注册
Interval = TimeSpan.FromSeconds(10),//健康检查时间间隔，或者称为心跳间隔
HTTP = $"http://{ip}:{port}/api/health",//健康检查地址,
Timeout = TimeSpan.FromSeconds(5)
}
});
#endregion
}

}

 

3 心跳检查控制器

[Route("api/[controller]")]
[ApiController]
public class HealthController : ControllerBase
{
#region Identity
private IConfiguration _IConfiguration = null;
private ILogger<HealthController> _logger = null;
public HealthController(IConfiguration configuration, ILogger<HealthController> logger)
{
this._IConfiguration = configuration;
this._logger = logger;
}
#endregion

[HttpGet]
public IActionResult Check()
{
this._logger.LogWarning($"{this._IConfiguration["port"]}-Health Check!");
return Ok();//200
}

}