/
logging.go
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/
logging.go
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// Copyright (c) 2016-2018, Jan Cajthaml <jan.cajthaml@gmail.com>
//
// 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.
package utils
import (
"bytes"
log "github.com/sirupsen/logrus"
)
// LogFormat is a custom logging formater for logrus
type LogFormat struct {
}
var (
debugPrefix = []byte("DEBU ")
infoPrefix = []byte("INFO ")
warnPrefix = []byte("WARN ")
fatalPrefix = []byte("FATA ")
errorPrefix = []byte("ERRO ")
panicPrefix = []byte("PANI ")
)
// Format processed each log entry and produces formatted log line
func (f *LogFormat) Format(entry *log.Entry) ([]byte, error) {
if entry.Message == "" {
return nil, nil
}
var b *bytes.Buffer
if entry.Buffer != nil {
b = entry.Buffer
} else {
b = new(bytes.Buffer)
}
switch entry.Level {
case log.DebugLevel:
b.Write(debugPrefix)
case log.InfoLevel:
b.Write(infoPrefix)
case log.WarnLevel:
b.Write(warnPrefix)
case log.ErrorLevel:
b.Write(errorPrefix)
case log.FatalLevel:
b.Write(fatalPrefix)
case log.PanicLevel:
b.Write(panicPrefix)
}
b.WriteString(entry.Message)
b.WriteByte('\n')
return b.Bytes(), nil
}