/// <summary>
/// 依据服务和负载均衡策略查找可调用的服务
/// </summary>
/// <param name="service"></param>
/// <param name="serviceName">要查找的服务名称</param>
/// <param name="balanceMethd">所用的负载均衡算法</param>
/// <param name="httpclientName">polly客户端名称，除非存在多个，否则用more你的就好</param>
/// <returns></returns>
public static async Task <HttpClient?> Find(this IConsulDiscoveryService service, string serviceName, LoadBalanceMethod balanceMethd = LoadBalanceMethod.Random, string httpclientName = "micro")
{
if (string.IsNullOrEmpty(serviceName))
{
throw new ArgumentException("message", nameof(serviceName));
}
try
{
var factory = service.ServiceProvider.GetService <IHttpClientFactory>();
var cataglog = await service.FindBalance(balanceMethd, serviceName);
if (cataglog != null)
{
var client = factory.CreateClient(httpclientName ?? "micro");
client.BaseAddress = new Uri(cataglog.ServiceAddress + ":" + cataglog.ServicePort);
return(client);
}
else
{
return(null);
}
}
catch (Exception err)
{
Debug.WriteLine(err.Message);
return(null);
}
}
