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commonlog.go
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commonlog.go
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/*
* Copyright 2018-2021, CS Systemes d'Information, http://csgroup.eu
*
* 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 commonlog
import (
"io/ioutil"
"os"
"runtime"
"strconv"
"strings"
"github.com/sirupsen/logrus"
)
var (
pidMaxLength int
// baseTimestamp time.Time
// emptyFieldMap logrus.FieldMap
// LogLevelFnMap is a map between loglevel and log functions from logrus
LogLevelFnMap = map[logrus.Level]func(args ...interface{}){
logrus.TraceLevel: logrus.Trace,
logrus.DebugLevel: logrus.Debug,
logrus.InfoLevel: logrus.Info,
logrus.WarnLevel: logrus.Warn,
logrus.ErrorLevel: logrus.Error,
}
)
// MyFormatter ...
type MyFormatter struct {
logrus.TextFormatter
pid string
}
// GetDefaultFormatter returns the default formatter used by all Safescale modules
func GetDefaultFormatter() *MyFormatter {
return &MyFormatter{
TextFormatter: logrus.TextFormatter{
ForceColors: true,
TimestampFormat: "2006-01-02 15:04:05.000",
FullTimestamp: true,
DisableLevelTruncation: true,
}}
}
// Format ...
func (f *MyFormatter) Format(entry *logrus.Entry) ([]byte, error) {
if f.TextFormatter.DisableLevelTruncation && f.TextFormatter.ForceColors {
if f.pid == "" {
f.pid = strconv.Itoa(os.Getpid())
repeat := pidMaxLength - len(f.pid)
if repeat > 0 {
f.pid = strings.Repeat(" ", repeat) + f.pid
}
}
bc, err := f.TextFormatter.Format(entry)
ticket := string(bc)
// replaced := strings.Replace(ticket, "[20", ""+strings.Repeat(" ", 8-len(entry.Level.String())+"[" + f.pid + "][20", 1)
replaced := strings.Replace(ticket, "[20", ""+strings.Repeat(" ", 8-len(entry.Level.String()))+"[20", 1)
replaced = strings.Replace(replaced, "] ", "]["+entry.Level.String()+"]["+f.pid+"] ", 1)
return []byte(replaced), err
}
return f.TextFormatter.Format(entry)
}
func init() {
switch runtime.GOOS {
case "linux":
data, err := ioutil.ReadFile("/proc/sys/kernel/pid_max")
if err != nil {
return
}
max := len(strings.TrimSpace(string(data)))
if max > pidMaxLength {
pidMaxLength = max
}
default:
pidMaxLength = 5
}
}