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logger.go
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logger.go
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package svrkit
import (
"fmt"
"log"
"os"
"sync"
"time"
)
const (
LOG_EMERG = 0
LOG_ALERT
LOG_CRIT
LOG_ERR
LOG_WARN
LOG_NOTICE
LOG_INFO
LOG_DEBUG = 7
)
type Logger_t struct {
priority int
l *log.Logger
m sync.RWMutex
}
var logger *Logger_t
func NewLogger(prefix string, priority int) {
logger = new(Logger_t)
logger.priority = priority
var logFile *os.File
now := time.Now()
logger.m.Lock()
logFileName := fmt.Sprintf("%v_%04v%02v%02v.log", prefix, now.Year(), int(now.Month()), now.Day())
logFile, err := os.OpenFile(logFileName, os.O_RDWR|os.O_APPEND|os.O_CREATE, 0660)
if err != nil {
panic(err)
}
logger.l = log.New(logFile, "", log.Ldate|log.Ltime|log.Lmicroseconds)
logger.m.Unlock()
go func() {
for {
nextTick := time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, time.Local)
if !nextTick.After(now) {
nextTick = nextTick.Add(24 * time.Hour)
}
diff := nextTick.Sub(now)
ticker := time.NewTicker(diff)
<-ticker.C
now = time.Now()
logger.m.Lock()
if logFile != nil {
err = logFile.Close()
if err != nil {
panic(err)
}
logFile = nil
}
logFileName := fmt.Sprintf("%v_%04v%02v%02v.log", prefix, now.Year(), int(now.Month()), now.Day())
logFile, err = os.OpenFile(logFileName, os.O_RDWR|os.O_APPEND|os.O_CREATE, 0660)
if err != nil {
panic(err)
}
logger.l = log.New(logFile, "", log.Ldate|log.Ltime|log.Lmicroseconds)
logger.m.Unlock()
}
}()
return
}
func SetPriority(priority int) {
logger.m.Lock()
logger.priority = priority
logger.m.Unlock()
}
func GetPriority() int {
logger.m.RLock()
priority := logger.priority
logger.m.RUnlock()
return priority
}
func Emerg(v ...interface{}) {
if logger.priority >= LOG_EMERG {
logger.m.RLock()
logger.l.Print(v...)
logger.m.RUnlock()
}
}
func Emergf(format string, v ...interface{}) {
if logger.priority >= LOG_EMERG {
logger.m.RLock()
logger.l.Printf(format, v...)
logger.m.RUnlock()
}
}
func Alert(v ...interface{}) {
if logger.priority >= LOG_ALERT {
logger.m.RLock()
logger.l.Print(v...)
logger.m.RUnlock()
}
}
func Alertf(format string, v ...interface{}) {
if logger.priority >= LOG_ALERT {
logger.m.RLock()
logger.l.Printf(format, v...)
logger.m.RUnlock()
}
}
func Crit(v ...interface{}) {
if logger.priority >= LOG_CRIT {
logger.m.RLock()
logger.l.Print(v...)
logger.m.RUnlock()
}
}
func Critf(format string, v ...interface{}) {
if logger.priority >= LOG_CRIT {
logger.m.RLock()
logger.l.Printf(format, v...)
logger.m.RUnlock()
}
}
func Err(v ...interface{}) {
if logger.priority >= LOG_ERR {
logger.m.RLock()
logger.l.Print(append([]interface{}{"[ERR] "}, v...)...)
logger.m.RUnlock()
}
}
func Errf(format string, v ...interface{}) {
if logger.priority >= LOG_ERR {
logger.m.RLock()
logger.l.Printf("[ERR] "+format, v...)
logger.m.RUnlock()
}
}
func Warn(v ...interface{}) {
if logger.priority >= LOG_WARN {
logger.m.RLock()
logger.l.Print(append([]interface{}{"[WARN] "}, v...)...)
logger.m.RUnlock()
}
}
func Warnf(format string, v ...interface{}) {
if logger.priority >= LOG_WARN {
logger.m.RLock()
logger.l.Printf("[WARN] "+format, v...)
logger.m.RUnlock()
}
}
func Notice(v ...interface{}) {
if logger.priority >= LOG_NOTICE {
logger.m.RLock()
logger.l.Print(append([]interface{}{"[NOTICE] "}, v...)...)
logger.m.RUnlock()
}
}
func Noticef(format string, v ...interface{}) {
if logger.priority >= LOG_NOTICE {
logger.m.RLock()
logger.l.Printf("[NOTICE] "+format, v...)
logger.m.RUnlock()
}
}
func Info(v ...interface{}) {
if logger.priority >= LOG_INFO {
logger.m.RLock()
logger.l.Print(append([]interface{}{"[INFO] "}, v...)...)
logger.m.RUnlock()
}
}
func Infof(format string, v ...interface{}) {
if logger.priority >= LOG_INFO {
logger.m.RLock()
logger.l.Printf("[INFO] "+format, v...)
logger.m.RUnlock()
}
}
func Debug(v ...interface{}) {
if logger.priority >= LOG_DEBUG {
logger.m.RLock()
logger.l.Print(append([]interface{}{"[DEBUG] "}, v...)...)
logger.m.RUnlock()
}
}
func Debugf(format string, v ...interface{}) {
if logger.priority >= LOG_DEBUG {
logger.m.RLock()
logger.l.Printf("[DEBUG] "+format, v...)
logger.m.RUnlock()
}
}