/
log.go
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/
log.go
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// Copyright © 2019 mg
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package log
import "fmt"
// Logger interface for logging in this module
type Logger interface {
Log(msg string)
}
type defaultLogger struct {
}
// Log default implementation
func (l *defaultLogger) Log(msg string) {
fmt.Println(msg)
}
var (
defaultLoggerImpl = &defaultLogger{}
logger Logger = defaultLoggerImpl
logEnable = false
)
// SetLogger set logger instance, if pass in `nil`, a default logger will be use
func SetLogger(impl Logger) {
if impl == nil {
logger = defaultLoggerImpl
} else {
logger = impl
}
}
// SetLoggingEnable sets log flag
func SetLoggingEnable(enable bool) {
logEnable = enable
}
func IsLoggingEnable() bool {
return logEnable
}
func L(msg string) {
logger.Log(msg)
}