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// Package log implements basic but useful request (access) logging middleware.
package log
import (
"log"
"net/http"
"github.com/mholt/caddy/middleware"
)
type Logger struct {
Next middleware.Handler
Rules []LogRule
}
func (l Logger) ServeHTTP(w http.ResponseWriter, r *http.Request) (int, error) {
for _, rule := range l.Rules {
if middleware.Path(r.URL.Path).Matches(rule.PathScope) {
responseRecorder := middleware.NewResponseRecorder(w)
status, err := l.Next.ServeHTTP(responseRecorder, r)
rep := middleware.NewReplacer(r, responseRecorder)
rule.Log.Println(rep.Replace(rule.Format))
return status, err
}
}
return l.Next.ServeHTTP(w, r)
}
type LogRule struct {
PathScope string
OutputFile string
Format string
Log *log.Logger
}
const (
DefaultLogFilename = "access.log"
CommonLogFormat = `{remote} ` + middleware.EmptyStringReplacer + ` [{when}] "{method} {uri} {proto}" {status} {size}`
CombinedLogFormat = CommonLogFormat + ` "{>Referer}" "{>User-Agent}"`
DefaultLogFormat = CommonLogFormat
)
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