Files
goyco/internal/middleware/logging.go

54 lines
975 B
Go

package middleware
import (
"log"
"net/http"
"time"
)
func Logging(debug bool) func(http.Handler) http.Handler {
return func(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
start := time.Now()
wrapped := &responseWriter{ResponseWriter: w, statusCode: http.StatusOK}
next.ServeHTTP(wrapped, r)
duration := time.Since(start)
if debug {
log.Printf(
"%s %s %d %v %s",
r.Method,
r.URL.Path,
wrapped.statusCode,
duration,
r.UserAgent(),
)
} else {
if wrapped.statusCode >= 400 || duration > time.Second {
log.Printf(
"%s %s %d %v %s",
r.Method,
r.URL.Path,
wrapped.statusCode,
duration,
r.UserAgent(),
)
}
}
})
}
}
type responseWriter struct {
http.ResponseWriter
statusCode int
}
func (rw *responseWriter) WriteHeader(code int) {
rw.statusCode = code
rw.ResponseWriter.WriteHeader(code)
}