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https://github.com/gogrlx/nats-server.git
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115 lines
2.4 KiB
Go
115 lines
2.4 KiB
Go
// Copyright 2012-2015 Apcera Inc. All rights reserved.
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package logger
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import (
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"fmt"
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"log"
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"os"
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)
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type Logger struct {
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logger *log.Logger
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debug bool
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trace bool
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infoLabel string
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errorLabel string
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fatalLabel string
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debugLabel string
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traceLabel string
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}
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func NewStdLogger(time, debug, trace, colors bool) *Logger {
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flags := 0
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if time {
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flags = log.LstdFlags | log.Lmicroseconds
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}
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l := &Logger{
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logger: log.New(os.Stderr, pidPrefix(), flags),
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debug: debug,
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trace: trace,
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}
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// Check to see if stderr is being redirected and if so turn off color
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stat, _ := os.Stderr.Stat()
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if (stat.Mode() & os.ModeCharDevice) == 0 {
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colors = false
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}
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if colors {
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setColoredLabelFormats(l)
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} else {
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setPlainLabelFormats(l)
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}
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return l
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}
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func NewFileLogger(filename string, time, debug, trace bool) *Logger {
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fileflags := os.O_WRONLY | os.O_APPEND | os.O_CREATE
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f, err := os.OpenFile(filename, fileflags, 0660)
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if err != nil {
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log.Fatalf("error opening file: %v", err)
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}
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flags := 0
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if time {
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flags = log.LstdFlags | log.Lmicroseconds
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}
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l := &Logger{
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logger: log.New(f, pidPrefix(), flags),
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debug: debug,
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trace: trace,
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}
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setPlainLabelFormats(l)
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return l
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}
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// Generate the pid prefix string
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func pidPrefix() string {
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return fmt.Sprintf("[%d] ", os.Getpid())
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}
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func setPlainLabelFormats(l *Logger) {
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l.infoLabel = "[INF] "
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l.debugLabel = "[DBG] "
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l.errorLabel = "[ERR] "
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l.fatalLabel = "[FTL] "
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l.traceLabel = "[TRC] "
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}
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func setColoredLabelFormats(l *Logger) {
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colorFormat := "[\x1b[%dm%s\x1b[0m] "
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l.infoLabel = fmt.Sprintf(colorFormat, 32, "INF")
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l.debugLabel = fmt.Sprintf(colorFormat, 36, "DBG")
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l.errorLabel = fmt.Sprintf(colorFormat, 31, "ERR")
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l.fatalLabel = fmt.Sprintf(colorFormat, 35, "FTL")
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l.traceLabel = fmt.Sprintf(colorFormat, 33, "TRC")
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}
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func (l *Logger) Noticef(format string, v ...interface{}) {
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l.logger.Printf(l.infoLabel+format, v...)
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}
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func (l *Logger) Errorf(format string, v ...interface{}) {
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l.logger.Printf(l.errorLabel+format, v...)
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}
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func (l *Logger) Fatalf(format string, v ...interface{}) {
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l.logger.Fatalf(l.fatalLabel+format, v...)
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}
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func (l *Logger) Debugf(format string, v ...interface{}) {
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if l.debug == true {
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l.logger.Printf(l.debugLabel+format, v...)
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}
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}
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func (l *Logger) Tracef(format string, v ...interface{}) {
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if l.trace == true {
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l.logger.Printf(l.traceLabel+format, v...)
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}
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}
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