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package consul
import (
"fmt"
"git.hilo.cn/hilo-common/mylogrus"
"git.hilo.cn/hilo-common/utils"
"github.com/hashicorp/consul/api"
"net/http"
"os"
"time"
)
var (
RegisterName = ""
RegisterTag = ""
)
// 异步注册到consul
func RegisterToConsul(port int, registerName, registerTag string) {
RegisterName, RegisterTag = registerName, registerTag
go register(port, false)
go selfCheck(port)
}
func consulCheck(w http.ResponseWriter, r *http.Request) {
_, _ = fmt.Fprintln(w, "consulCheck")
}
func register(port int, retry bool) {
checkPort := port + 1000
if !retry {
go func() {
http.HandleFunc("/check", consulCheck)
if err := http.ListenAndServe(fmt.Sprintf(":%d", checkPort), nil); err != nil {
mylogrus.MyLog.Warnf("check server error :%v ", err)
return
}
}()
}
client, err := api.NewClient(api.DefaultConfig()) //非默认情况下需要设置实际的参数
if err != nil {
mylogrus.MyLog.Errorf("RegisterToConsul Fail:%v", err)
return
}
if client == nil {
mylogrus.MyLog.Errorf("Fail to get consul client.")
return
}
mylogrus.MyLog.Infof("RegisterToConsul:%v-%v", client, err)
registration := new(api.AgentServiceRegistration)
hostName, _ := os.Hostname()
registration.ID = fmt.Sprintf("%s-%s", RegisterName, hostName)
registration.Name = RegisterName
registration.Port = port
registration.Tags = []string{RegisterTag}
myIp, myNodeName := "", ""
if localIp, err := utils.GetClientIp(); err != nil {
mylogrus.MyLog.Fatalln("local ip not found", err)
} else {
myIp = localIp
}
mylogrus.MyLog.Infof("My ip is %s, nodeName: %s\n", myIp, myNodeName)
registration.Address = myIp
registration.Check = &api.AgentServiceCheck{
HTTP: fmt.Sprintf("http://localhost:%d%s", checkPort, "/check"),
Timeout: "3s",
Interval: "5s",
DeregisterCriticalServiceAfter: "30s", //check失败后30秒删除本服务
}
err = client.Agent().ServiceRegister(registration)
if err != nil {
mylogrus.MyLog.Errorf("register server error :%v ", err)
return
}
}
// 自愈检查
// 启动后每一分钟检查一次
// 首次启动不执行
func selfCheck(port int) {
ticker := time.NewTicker(time.Minute)
defer ticker.Stop()
for {
select {
case <-ticker.C:
client, err := api.NewClient(api.DefaultConfig()) //非默认情况下需要设置实际的参数
if err != nil {
mylogrus.MyLog.Errorf("RegisterToConsul Fail:%v", err)
break
}
if client == nil {
mylogrus.MyLog.Errorf("Fail to get consul client.")
break
}
cataLog := client.Catalog()
if cataLog == nil {
mylogrus.MyLog.Errorf("No catalog.")
break
}
services, _, err := cataLog.Service(RegisterName, "", nil)
if err != nil {
mylogrus.MyLog.Errorf("%v", err)
break
}
if len(services) == 0 {
mylogrus.MyLog.Errorf("%s not found.", RegisterName)
go register(port, true) // 重新注册
} else {
mylogrus.MyLog.Infof("%s check success %v", RegisterName, services[0])
}
}
}
}