70 lines
1.6 KiB
Go
70 lines
1.6 KiB
Go
package accesslog
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import (
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"bytes"
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"fmt"
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"time"
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"github.com/sirupsen/logrus"
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)
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// default format for time presentation
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const (
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commonLogTimeFormat = "02/Jan/2006:15:04:05 -0700"
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defaultValue = "-"
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)
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// CommonLogFormatter provides formatting in the Traefik common log format
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type CommonLogFormatter struct{}
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//Format formats the log entry in the Traefik common log format
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func (f *CommonLogFormatter) Format(entry *logrus.Entry) ([]byte, error) {
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b := &bytes.Buffer{}
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timestamp := entry.Data[StartUTC].(time.Time).Format(commonLogTimeFormat)
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elapsedMillis := entry.Data[Duration].(time.Duration).Nanoseconds() / 1000000
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_, err := fmt.Fprintf(b, "%s - %s [%s] \"%s %s %s\" %v %v %s %s %v %s %s %dms\n",
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entry.Data[ClientHost],
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entry.Data[ClientUsername],
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timestamp,
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entry.Data[RequestMethod],
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entry.Data[RequestPath],
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entry.Data[RequestProtocol],
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toLog(entry.Data[OriginStatus], defaultValue),
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toLog(entry.Data[OriginContentSize], defaultValue),
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toLog(entry.Data["request_Referer"], `"-"`),
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toLog(entry.Data["request_User-Agent"], `"-"`),
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toLog(entry.Data[RequestCount], defaultValue),
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toLog(entry.Data[FrontendName], defaultValue),
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toLog(entry.Data[BackendURL], defaultValue),
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elapsedMillis)
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return b.Bytes(), err
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}
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func toLog(v interface{}, defaultValue string) interface{} {
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if v == nil {
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return defaultValue
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}
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switch s := v.(type) {
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case string:
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return quoted(s, defaultValue)
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case fmt.Stringer:
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return quoted(s.String(), defaultValue)
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default:
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return v
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}
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}
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func quoted(s string, defaultValue string) string {
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if len(s) == 0 {
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return defaultValue
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}
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return `"` + s + `"`
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}
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