/
route.go
55 lines (46 loc) · 1.09 KB
/
route.go
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package requestlog
import (
"bytes"
"io"
"net/http"
"strings"
)
type Route struct {
Path string
Method string
Handler http.HandlerFunc
TrackHTTPMetrics func(*Route) func(*CountingResponseWriter)
LogContent bool
}
var _ http.Handler = (*Route)(nil)
func (rt *Route) ServeHTTP(w http.ResponseWriter, r *http.Request) {
crw := w.(*CountingResponseWriter)
if rt.TrackHTTPMetrics != nil {
defer rt.TrackHTTPMetrics(rt)(crw)
}
if rt.LogContent {
if r.Method != http.MethodGet && r.Method != http.MethodHead {
crw.ResponseBody = &bytes.Buffer{}
}
if strings.HasPrefix(r.Header.Get("Content-Type"), "application/json") {
pcr := &partialCachingReader{Reader: r.Body}
crw.RequestBody = &pcr.Buffer
r.Body = pcr
}
}
rt.Handler(w, r)
}
type partialCachingReader struct {
Reader io.ReadCloser
Buffer bytes.Buffer
}
func (pcr *partialCachingReader) Read(p []byte) (int, error) {
n, err := pcr.Reader.Read(p)
if n > 0 {
pcr.Buffer.Write(CutRequestData(p[:n], pcr.Buffer.Len()))
}
return n, err
}
func (pcr *partialCachingReader) Close() error {
return pcr.Reader.Close()
}