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package logger
import (
"fmt"
"os"
)
type Level int8
const (
// TraceLevel level. Designates finer-grained informational events than the Debug.
TraceLevel Level = iota - 2
// DebugLevel level. Usually only enabled when debugging. Very verbose logging.
DebugLevel
// InfoLevel is the default logging priority.
// General operational entries about what's going on inside the application.
InfoLevel
// WarnLevel level. Non-critical entries that deserve eyes.
WarnLevel
// ErrorLevel level. Logs. Used for errors that should definitely be noted.
ErrorLevel
// FatalLevel level. Logs and then calls `logger.Exit(1)`. highest level of severity.
FatalLevel
)
func (l Level) String() string {
switch l {
case TraceLevel:
return "trace"
case DebugLevel:
return "debug"
case InfoLevel:
return "info"
case WarnLevel:
return "warn"
case ErrorLevel:
return "error"
case FatalLevel:
return "fatal"
}
return ""
}
// Enabled returns true if the given level is at or above this level.
func (l Level) Enabled(lvl Level) bool {
return lvl >= l
}
// GetLevel converts a level string into a logger Level value.
// returns an error if the input string does not match known values.
func GetLevel(levelStr string) (Level, error) {
switch levelStr {
case TraceLevel.String():
return TraceLevel, nil
case DebugLevel.String():
return DebugLevel, nil
case InfoLevel.String():
return InfoLevel, nil
case WarnLevel.String():
return WarnLevel, nil
case ErrorLevel.String():
return ErrorLevel, nil
case FatalLevel.String():
return FatalLevel, nil
}
return InfoLevel, fmt.Errorf("Unknown Level String: '%s', defaulting to InfoLevel", levelStr)
}
func Info(args ...interface{}) {
DefaultLogger.Log(InfoLevel, args...)
}
func Infof(template string, args ...interface{}) {
DefaultLogger.Logf(InfoLevel, template, args...)
}
func Trace(args ...interface{}) {
DefaultLogger.Log(TraceLevel, args...)
}
func Tracef(template string, args ...interface{}) {
DefaultLogger.Logf(TraceLevel, template, args...)
}
func Debug(args ...interface{}) {
DefaultLogger.Log(DebugLevel, args...)
}
func Debugf(template string, args ...interface{}) {
DefaultLogger.Logf(DebugLevel, template, args...)
}
func Warn(args ...interface{}) {
DefaultLogger.Log(WarnLevel, args...)
}
func Warnf(template string, args ...interface{}) {
DefaultLogger.Logf(WarnLevel, template, args...)
}
func Error(args ...interface{}) {
DefaultLogger.Log(ErrorLevel, args...)
}
func Errorf(template string, args ...interface{}) {
DefaultLogger.Logf(ErrorLevel, template, args...)
}
func Fatal(args ...interface{}) {
DefaultLogger.Log(FatalLevel, args...)
os.Exit(1)
}
func Fatalf(template string, args ...interface{}) {
DefaultLogger.Logf(FatalLevel, template, args...)
os.Exit(1)
}
// Returns true if the given level is at or lower the current logger level
func V(lvl Level, log Logger) bool {
l := DefaultLogger
if log != nil {
l = log
}
return l.Options().Level <= lvl
}
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