Илья Глазунов 8f5b9a5cd1 go implementation
2025-12-11 16:52:13 +03:00

75 lines
1.6 KiB
Go

package middleware
import (
"fmt"
"net/http"
"runtime/debug"
"time"
"github.com/konduktor/konduktor/internal/logging"
)
type responseWriter struct {
http.ResponseWriter
status int
size int
}
func (rw *responseWriter) WriteHeader(code int) {
rw.status = code
rw.ResponseWriter.WriteHeader(code)
}
func (rw *responseWriter) Write(b []byte) (int, error) {
size, err := rw.ResponseWriter.Write(b)
rw.size += size
return size, err
}
func ServerHeader(next http.Handler, version string) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Server", fmt.Sprintf("konduktor/%s", version))
next.ServeHTTP(w, r)
})
}
func AccessLog(next http.Handler, logger *logging.Logger) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
start := time.Now()
wrapped := &responseWriter{
ResponseWriter: w,
status: http.StatusOK,
}
next.ServeHTTP(wrapped, r)
duration := time.Since(start)
logger.Info("HTTP request",
"method", r.Method,
"path", r.URL.Path,
"status", wrapped.status,
"duration_ms", duration.Milliseconds(),
"client_ip", r.RemoteAddr,
"user_agent", r.UserAgent(),
)
})
}
func Recovery(next http.Handler, logger *logging.Logger) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
defer func() {
if err := recover(); err != nil {
logger.Error("Panic recovered",
"error", fmt.Sprintf("%v", err),
"stack", string(debug.Stack()),
)
http.Error(w, "Internal Server Error", http.StatusInternalServerError)
}
}()
next.ServeHTTP(w, r)
})
}