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log.go
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log.go
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package y
import (
"bufio"
"fmt"
"github.com/cihub/seelog"
"os"
"runtime/debug"
"strings"
"sync"
)
var (
mutex sync.Mutex
logger seelog.LoggerInterface
Logger = LogFunc(Info)
errNotInit = fmt.Errorf("log not init")
)
func InitLog(fileName string) error {
if fileName == "" {
return InitLogDefault()
}
var err error
logger, err = seelog.LoggerFromConfigAsFile(fileName)
if err != nil {
return err
}
logger.SetAdditionalStackDepth(1)
//seelog.ReplaceLogger(logger)
return nil
}
func InitLogDefault() error {
index := strings.LastIndex(os.Args[0], string(os.PathSeparator))
if index == -1 {
return fmt.Errorf("InitLogDefault can't find os.PathSeparator in path: %s", os.Args[0])
}
name := os.Args[0][index+1:]
content := fmt.Sprintf(`
<seelog type="asyncloop">
<outputs formatid="main">
<rollingfile type="size" filename="%s" maxsize="1000000" maxrolls="100"/>
<console />
</outputs>
<formats>
<format id="main" format="[%%Date(2006-01-02 15:04:05.000)][%%Level][%%File:%%Line] %%Msg%%n"/>
</formats>
</seelog>
`, fmt.Sprintf("log%s%s_all.log", string(os.PathSeparator), name))
var err error
logger, err = seelog.LoggerFromConfigAsString(content)
if err != nil {
return err
}
logger.SetAdditionalStackDepth(1)
return nil
}
func InitLogDefaultWithConsole() error {
index := strings.LastIndex(os.Args[0], string(os.PathSeparator))
if index == -1 {
return fmt.Errorf("InitLogDefault can't find os.PathSeparator in path: %s", os.Args[0])
}
name := os.Args[0][index+1:]
content := fmt.Sprintf(`
<seelog type="asyncloop">
<outputs formatid="main">
<rollingfile type="size" filename="%s" maxsize="1000000" maxrolls="100"/>
</outputs>
<formats>
<format id="main" format="[%%Date(2006-01-02 15:04:05.000)][%%Level][%%File:%%Line] %%Msg%%n"/>
</formats>
</seelog>
`, fmt.Sprintf("log%s%s_all.log", string(os.PathSeparator), name))
var err error
logger, err = seelog.LoggerFromConfigAsString(content)
if err != nil {
return err
}
logger.SetAdditionalStackDepth(1)
return nil
}
func FlushLog() {
logger.Flush()
}
// Debugf formats message according to format specifier
// and writes to default logger with ylog level = Debug.
func Debugf(format string, params ...interface{}) {
if logger == nil {
return
}
mutex.Lock()
defer mutex.Unlock()
logger.Debugf(format, params...)
}
// Infof formats message according to format specifier
// and writes to default logger with ylog level = Info.
func Infof(format string, params ...interface{}) {
if logger == nil {
return
}
mutex.Lock()
defer mutex.Unlock()
logger.Infof(format, params...)
}
// Errorf formats message according to format specifier and writes to default logger with ylog level = Error
func Errorf(format string, params ...interface{}) error {
if logger == nil {
return errNotInit
}
mutex.Lock()
defer mutex.Unlock()
return logger.Errorf(format, params...)
}
// Debug formats message using the default formats for its operands and writes to default logger with ylog level = Debug
func Debug(v ...interface{}) {
if logger == nil {
return
}
mutex.Lock()
defer mutex.Unlock()
var t []interface{}
for _, u := range v {
t = append(t, u, " ")
}
logger.Debug(t...)
}
// Info formats message using the default formats for its operands and writes to default logger with ylog level = Info
func Info(v ...interface{}) {
if logger == nil {
return
}
mutex.Lock()
defer mutex.Unlock()
var t []interface{}
for _, u := range v {
t = append(t, u, " ")
}
logger.Info(t...)
}
// Error formats message using the default formats for its operands and writes to default logger with ylog level = Error
func Error(v ...interface{}) error {
if logger == nil {
return errNotInit
}
mutex.Lock()
defer mutex.Unlock()
var t []interface{}
for _, u := range v {
t = append(t, u, " ")
}
return logger.Error(t...)
}
func Panic(err interface{}) {
if logger == nil {
return
}
if err != nil {
panic(printPanic(err))
}
}
func printPanic(err interface{}) error {
if logger == nil {
return errNotInit
}
mutex.Lock()
defer mutex.Unlock()
logger.Error("==============================================================")
err1 := logger.Error(err)
buf := debug.Stack()
for {
advance, data, _ := bufio.ScanLines(buf, true)
if data == nil {
break
}
logger.Error(string(data))
buf = buf[advance:]
}
logger.Error("--------------------------------------------------------------")
return err1
}
type LogFunc func(keyvals ...interface{})
func (l LogFunc) Log(keyvals ...interface{}) error {
l(keyvals...)
return nil
}