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logger.go
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logger.go
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package graceful
import (
"fmt"
"log"
"os"
)
var (
flag = log.LstdFlags | log.Lmicroseconds | log.Lshortfile | log.Lmsgprefix
defaultLog = &logger{
callDepth: 2,
infoLog: log.New(os.Stdout, `[graceful] `, flag),
errorLog: log.New(os.Stderr, `[graceful] `, flag),
}
)
type logger struct {
callDepth int
infoLog *log.Logger
errorLog *log.Logger
}
// Info calls l.infoLog to print to the logger.
// Arguments are handled in the manner of fmt.Sprintln.
func (l *logger) Info(a ...interface{}) {
_ = l.infoLog.Output(l.callDepth, fmt.Sprintln(a...))
}
// Infof calls l.infoLog to print to the logger.
// Arguments are handled in the manner of fmt.Sprintf.
func (l *logger) Infof(format string, a ...interface{}) {
_ = l.infoLog.Output(l.callDepth, fmt.Sprintf(format, a...))
}
// Error calls l.errorLog to print to the logger.
// Arguments are handled in the manner of fmt.Sprintln.
func (l *logger) Error(a ...interface{}) {
_ = l.errorLog.Output(l.callDepth, fmt.Sprintln(a...))
}
// Errorf calls l.errorLog to print to the logger.
// Arguments are handled in the manner of fmt.Sprintf.
func (l *logger) Errorf(format string, a ...interface{}) {
_ = l.errorLog.Output(l.callDepth, fmt.Sprintf(format, a...))
}
func SetDefaultLog(infoLog, errLog *log.Logger, callDepth ...int) {
if len(callDepth) == 0 {
callDepth = append(callDepth, 2)
}
defaultLog = &logger{
callDepth: callDepth[0],
infoLog: infoLog,
errorLog: errLog,
}
}