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logger.go
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logger.go
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/*
* knoxite
* Copyright (c) 2021, Matthias Hartmann <mahartma@mahartma.com>
*
* For license see LICENSE
*/
package knoxite
// Logger is used for levelled logging and verbose flag.
type Logger interface {
Fatal(v ...interface{})
Fatalf(format string, v ...interface{})
Warn(v ...interface{})
Warnf(format string, v ...interface{})
Print(v ...interface{})
Printf(format string, v ...interface{})
Info(v ...interface{})
Infof(format string, v ...interface{})
Debug(v ...interface{})
Debugf(format string, v ...interface{})
}
var (
log Logger = NopLogger{}
)
func SetLogger(l Logger) {
log = l
}
// The quiet NopLogger will be used by default if no logger has been set via SetLogger().
type NopLogger struct {
}
func (nl NopLogger) Fatal(v ...interface{}) {}
func (nl NopLogger) Fatalf(format string, v ...interface{}) {}
func (nl NopLogger) Warn(v ...interface{}) {}
func (nl NopLogger) Warnf(format string, v ...interface{}) {}
func (nl NopLogger) Print(v ...interface{}) {}
func (nl NopLogger) Printf(format string, v ...interface{}) {}
func (nl NopLogger) Info(v ...interface{}) {}
func (nl NopLogger) Infof(format string, v ...interface{}) {}
func (nl NopLogger) Debug(v ...interface{}) {}
func (nl NopLogger) Debugf(format string, v ...interface{}) {}