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logKit.go
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logKit.go
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package logKit
import (
"github.com/richelieu-yang/chimera/v2/src/core/fileKit"
"github.com/richelieu-yang/chimera/v2/src/core/strKit"
"io"
"log"
"os"
)
// NewFileLogger
/*
@param logPath 如果文件不存在,会生成文件和目录;文件存在,新的内容会append
*/
func NewFileLogger(filePath, prefix string) (*log.Logger, error) {
if err := fileKit.MkParentDirs(filePath); err != nil {
return nil, err
}
// 如果生成文件的话,其权限为0666(与os.Create()的权限一样)
// os.OpenFile()的传参flag,可参考:https://studygolang.com/articles/22180
writer, err := os.OpenFile(filePath, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
if err != nil {
return nil, err
}
// 此处不能关闭writer,否则日志内容将写不进去
//defer writer.CloseWriters()
return newLogger(writer, prefix), nil
}
func newLogger(writer io.Writer, prefix string) *log.Logger {
if strKit.IsNotEmpty(prefix) {
// 为了把"prefix"和"日志正文"分隔开,加个空格
prefix = strKit.AppendIfMissing(prefix, " ")
}
return log.New(writer, prefix, log.Ldate|log.Ltime|log.Lmicroseconds|log.Lmsgprefix)
}