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feign.go 1.19 KB
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package xjutils
import (
"github.com/nacos-group/nacos-sdk-go/clients"
"github.com/nacos-group/nacos-sdk-go/clients/naming_client"
"github.com/nacos-group/nacos-sdk-go/common/constant"
"github.com/nacos-group/nacos-sdk-go/vo"
"strconv"
)
func SelectOneHealthyInstance(client naming_client.INamingClient, IpAddr string, Port uint64, ServiceName string) (instance string, err error) {
if client == nil {
sc := []constant.ServerConfig{
{
IpAddr: IpAddr,
Port: Port,
},
}
cc := constant.ClientConfig{
TimeoutMs: 5000,
LogDir: `log`,
CacheDir: `cache`,
LogLevel: "error",
}
client, err = clients.CreateNamingClient(map[string]interface{}{
"serverConfigs": sc,
"clientConfig": cc,
})
if err != nil {
return "", err
}
}
//SelectOneHealthyInstance return one instance by WRR strategy for load balance
//And the instance should be health=true,enable=true and weight>0
//ClusterName=DEFAULT,GroupName=DEFAULT_GROUP
instances, err := client.SelectOneHealthyInstance(vo.SelectOneHealthInstanceParam{
ServiceName: ServiceName,
})
if err != nil {
return "", err
}
return "http://" + instances.Ip + ":" + strconv.Itoa(int(instances.Port)), nil
}
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