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logger.go
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logger.go
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
//go:build !js
// +build !js
package kivikd
import (
"net/http"
"time"
"github.com/go-kivik/kivik/v4/x/kivikd/logger"
)
type statusWriter struct {
http.ResponseWriter
status int
byteCount int
}
func (w *statusWriter) WriteHeader(status int) {
w.status = status
w.ResponseWriter.WriteHeader(status)
}
func (w *statusWriter) Write(b []byte) (int, error) {
n, err := w.ResponseWriter.Write(b)
w.byteCount += n
return n, err
}
func loggerMiddleware(rlog logger.RequestLogger) 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()
sw := &statusWriter{ResponseWriter: w}
next.ServeHTTP(sw, r)
session := MustGetSession(r.Context())
var username string
if session.User != nil {
username = session.User.Name
}
fields := logger.Fields{
logger.FieldUsername: username,
logger.FieldTimestamp: start,
logger.FieldElapsedTime: time.Since(start),
logger.FieldResponseSize: sw.byteCount,
}
rlog.Log(r, sw.status, fields)
})
}
}