supervisor
Golang http & grpc server for gracefully shutdown like nginx -s reload if you want a server which would be restarted without stopping service, you shall choose supervisor
reload
Server's Config shows you the http port which your services shall listen, if you provide :8088 as the default port then you can request the url:
curl http://your_ip:8088/-/reload
to restart the server
metrics
Server's Config also shows the metrics for prometheus, if you provide the Config with :8088 as the default port then you can access the metrics of your services:
curl http://your_ip:8088/-/metrics
demo
HTTP server
package main
import (
"fmt"
"github.com/liqiongfan/supervisor"
"net"
"net/http"
)
func main() {
h := &supervisor.HTTPServer{
Server: supervisor.Server{
ListenAddr: []string{`:9091`},
Config: supervisor.ListenConfig{ Addr: ":8088" },
},
Entry: Main,
}
err := h.Run()
if err != nil {
panic(err)
}
}
func Main(srv []*http.Server, l []net.Listener) {
http.HandleFunc(`/`, func(w http.ResponseWriter, r *http.Request){
_, _ = w.Write([]byte("OK\n"))
})
err := srv[0].Serve(l[0])
if err != nil {
fmt.Printf("error: %v\n", err)
}
}
gin HTTP server
package main
import (
"fmt"
"github.com/gin-gonic/gin"
"github.com/liqiongfan/supervisor"
"net"
"net/http"
)
func main() {
h := &supervisor.HTTPServer{
Server: supervisor.Server{
ListenAddr: []string{`:9091`},
Config: supervisor.ListenConfig{ Addr: ":8088" },
},
Entry: Main,
}
err := h.Run()
if err != nil {
panic(err)
}
}
func all(c *gin.Context) {
uri, _ := c.Params.Get(`uri`)
c.String(200, "uri: %s", uri)
}
func Main(srv []*http.Server, l []net.Listener) {
server := srv[0]
listener := l[0]
r := gin.New()
r.GET(`/*uri`, all)
server.Handler = r
err := server.Serve(listener)
if err != nil {
fmt.Printf("Server: %v\n", err)
}
}
