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logging.go
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logging.go
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package logging
import (
"log"
)
type Logger struct {
tag string
}
type LogLevel struct {
name string
level uint
}
var trace = &LogLevel{name: "TRACE", level: 1}
var debug = &LogLevel{name: "DEBUG", level: 2}
var info = &LogLevel{name: "INFO", level: 3}
var warning = &LogLevel{name: "WARNING", level: 4}
var error = &LogLevel{name: "ERROR", level: 5}
var critical = &LogLevel{name: "CRITICAL", level: 6}
func stringToLogLevel(name string) *LogLevel {
switch name {
case "TRACE":
return trace
case "DEBUG":
return debug
case "INFO":
return info
case "WARNING":
return warning
case "CRITICAL":
return critical
}
return &LogLevel{name: "unknown", level: 0}
}
var logLevelConfigs = map[string]*LogLevel{
"root": info,
}
func GetLogger(tag string) *Logger {
return &Logger{tag: tag}
}
func ConfigureLoggers(rootLogLevel string) {
logLevelConfigs["root"] = stringToLogLevel(rootLogLevel)
}
func (logger *Logger) currentLogLevel() *LogLevel {
return logLevelConfigs["root"]
}
func (logger *Logger) message(logLevel *LogLevel, message string) string {
return logLevel.name + " " + logger.tag + " " + message
}
func (logger *Logger) log(logLevel *LogLevel, message string, args ...interface{}) {
if logLevel.level >= logger.currentLogLevel().level {
log.Printf(logger.message(logLevel, message), args...)
}
}
func (logger *Logger) Criticalf(m string, args ...interface{}) {
logger.log(critical, m, args...)
}
func (logger *Logger) Errorf(m string, args ...interface{}) {
logger.log(error, m, args...)
}
func (logger *Logger) Warningf(m string, args ...interface{}) {
logger.log(warning, m, args...)
}
func (logger *Logger) Infof(m string, args ...interface{}) {
logger.log(info, m, args...)
}
func (logger *Logger) Debugf(m string, args ...interface{}) {
logger.log(debug, m, args...)
}
func (logger *Logger) Tracef(m string, args ...interface{}) {
logger.log(trace, m, args...)
}