diff options
author | Rogier Lommers <rogier@lommers.org> | 2018-01-30 05:34:00 +0100 |
---|---|---|
committer | fguillot <fred@kanboard.net> | 2018-01-29 20:34:00 -0800 |
commit | 24a2f472ec8593b4734e91ac15ee5503d16ae63a (patch) | |
tree | eea369c191da9b2807b3e8db714ca84f20761d20 /logger | |
parent | 40eb1b10fe40bd23e40708f734b74b992547d8ca (diff) |
Add flag to enable debug logging
Diffstat (limited to 'logger')
-rw-r--r-- | logger/logger.go | 63 |
1 files changed, 56 insertions, 7 deletions
diff --git a/logger/logger.go b/logger/logger.go index e608503..01d041c 100644 --- a/logger/logger.go +++ b/logger/logger.go @@ -10,28 +10,77 @@ import ( "time" ) +var requestedLevel = InfoLevel + +// LogLevel type +type LogLevel uint32 + +const ( + // FatalLevel should be used in fatal situations, the app will exit + FatalLevel LogLevel = iota + + // ErrorLevel should be used when someone should really look at the error + ErrorLevel + + // InfoLevel should be used during normal operations + InfoLevel + + // DebugLevel should be used only during development + DebugLevel +) + +// Convert the Level to a string. +func (level LogLevel) String() string { + switch level { + case DebugLevel: + return "DEBUG" + case InfoLevel: + return "INFO" + case ErrorLevel: + return "ERROR" + case FatalLevel: + return "FATAL" + } + + return "UNKNOWN" +} + +// EnableDebug increases logging, more verbose (debug) +func EnableDebug() { + requestedLevel = DebugLevel + formatMessage(InfoLevel, "Debug mode enabled") +} + // Debug sends a debug log message. func Debug(format string, v ...interface{}) { - formatMessage("DEBUG", format, v...) + if requestedLevel >= DebugLevel { + formatMessage(DebugLevel, format, v...) + } } // Info sends an info log message. func Info(format string, v ...interface{}) { - formatMessage("INFO", format, v...) + if requestedLevel >= InfoLevel { + formatMessage(InfoLevel, format, v...) + } } // Error sends an error log message. func Error(format string, v ...interface{}) { - formatMessage("ERROR", format, v...) + if requestedLevel >= ErrorLevel { + formatMessage(ErrorLevel, format, v...) + } } // Fatal sends a fatal log message and stop the execution of the program. func Fatal(format string, v ...interface{}) { - formatMessage("FATAL", format, v...) - os.Exit(1) + if requestedLevel >= FatalLevel { + formatMessage(FatalLevel, format, v...) + os.Exit(1) + } } -func formatMessage(level, format string, v ...interface{}) { - prefix := fmt.Sprintf("[%s] [%s] ", time.Now().Format("2006-01-02T15:04:05"), level) +func formatMessage(level LogLevel, format string, v ...interface{}) { + prefix := fmt.Sprintf("[%s] [%s] ", time.Now().Format("2006-01-02T15:04:05"), level.String()) fmt.Fprintf(os.Stderr, prefix+format+"\n", v...) } |