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start.go
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start.go
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package nacos
import (
"fmt"
"net"
"strconv"
"strings"
"time"
"github.com/nacos-group/nacos-sdk-go/clients"
"github.com/nacos-group/nacos-sdk-go/common/constant"
"github.com/nacos-group/nacos-sdk-go/vo"
"github.com/okex/exchain/libs/tendermint/libs/log"
)
// StartNacosClient start nacos client and register rest service in nacos
func StartNacosClient(logger log.Logger, urls string, namespace string, name string, externalAddr string) {
ip, port, err := ResolveIPAndPort(externalAddr)
if err != nil {
logger.Error(fmt.Sprintf("failed to resolve %s error: %s", externalAddr, err.Error()))
return
}
serverConfigs, err := getServerConfigs(urls)
if err != nil {
logger.Error(fmt.Sprintf("failed to resolve nacos server url %s: %s", urls, err.Error()))
return
}
client, err := clients.CreateNamingClient(map[string]interface{}{
"serverConfigs": serverConfigs,
"clientConfig": constant.ClientConfig{
TimeoutMs: 5000,
ListenInterval: 10000,
NotLoadCacheAtStart: true,
NamespaceId: namespace,
LogDir: "/dev/null",
LogLevel: "error",
},
})
if err != nil {
logger.Error(fmt.Sprintf("failed to create nacos client. error: %s", err.Error()))
return
}
_, err = client.RegisterInstance(vo.RegisterInstanceParam{
Ip: ip,
Port: uint64(port),
ServiceName: name,
Weight: 10,
ClusterName: "DEFAULT",
Enable: true,
Healthy: true,
Ephemeral: true,
Metadata: map[string]string{
"preserved.register.source": "GO",
"app_registry_tag": strconv.FormatInt(time.Now().Unix(), 10),
},
})
if err != nil {
logger.Error(fmt.Sprintf("failed to register instance in nacos server. error: %s", err.Error()))
return
}
logger.Info("register application instance in nacos successfully")
}
func ResolveIPAndPort(addr string) (string, int, error) {
laddr := strings.Split(addr, ":")
ip := laddr[0]
if ip == "127.0.0.1" {
return GetLocalIP(), 26659, nil
}
port, err := strconv.Atoi(laddr[1])
if err != nil {
return "", 0, err
}
return ip, port, nil
}
// GetLocalIP get local ip
func GetLocalIP() string {
addrs, err := net.InterfaceAddrs()
if err != nil {
return ""
}
for _, address := range addrs {
if ipnet, ok := address.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
if ipnet.IP.To4() != nil {
return ipnet.IP.String()
}
}
}
return ""
}