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package health
import (
"io"
"log"
"net/http"
"sync"
)
var once sync.Once
type Health struct {
Addr string
}
func health(w http.ResponseWriter, r *http.Request) {
io.WriteString(w, ok)
}
func (h Health) ListenAndServe() error {
if h.Addr == "" {
h.Addr = defAddr
}
once.Do(func() {
http.HandleFunc("/health", health)
go func() {
if err := http.ListenAndServe(h.Addr, nil); err != nil {
log.Printf("[ERROR] Failed to start health handler: %s", err)
}
}()
})
return nil
}
const (
ok = "OK"
defAddr = ":8080"
)
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