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|
package handler
import (
"go-pkg-server/logging"
"log/slog"
"net/http"
"time"
)
type traceWriter struct {
http.ResponseWriter
status int
bytes int
}
var _ http.ResponseWriter = &traceWriter{}
func (t *traceWriter) Write(b []byte) (int, error) {
if t.status == 0 {
t.WriteHeader(http.StatusOK)
}
c, err := t.ResponseWriter.Write(b)
t.bytes += c
return c, err
}
func (tw *traceWriter) WriteHeader(statusCode int) {
if tw.status == 0 {
tw.status = http.StatusOK
}
tw.status = statusCode
tw.ResponseWriter.WriteHeader(statusCode)
}
func New(next http.Handler) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
ctx := r.Context()
logger := logging.FromContext(ctx)
defer func() {
err := recover()
if err != nil {
logging.RecoverLog(ctx, err)
http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
}
}()
logger = logger.With("method", r.Method,
"host", r.Host,
"remote_address", r.RemoteAddr,
"path", r.RequestURI,
)
ctx = logging.WithLogger(ctx, logger)
r = r.WithContext(ctx)
tw := &traceWriter{ResponseWriter: w}
start := time.Now()
next.ServeHTTP(tw, r)
duration := time.Since(start)
logger.Log(ctx, slog.LevelInfo, "Request Handled",
"protocol", r.Proto,
"bytes_recieved", r.ContentLength,
"status", tw.status,
"time", duration,
"bytes_sent", tw.bytes,
"user_agent", r.UserAgent(),
"referer", r.Referer(),
)
}
}
|
