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43 lines
707 B
Go
43 lines
707 B
Go
8 years ago
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package log
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import (
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"fmt"
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"os"
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"path"
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"time"
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)
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// AlwaysNewFileWriter create new log for every process
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type AlwaysNewFileWriter struct {
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Name string
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file *os.File
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}
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func (w *AlwaysNewFileWriter) Write(p []byte) (n int, err error) {
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if w.file == nil {
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w.openFile()
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}
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return w.file.Write(p)
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}
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func (w *AlwaysNewFileWriter) openFile() (err error) {
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name := fmt.Sprintf("%s.%s", w.Name, time.Now().Format("20060102_150405"))
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// remove symbol link if exist
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os.Remove(w.Name)
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// create symbol
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err = os.Symlink(path.Base(name), w.Name)
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if err != nil {
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return err
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}
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w.file, err = os.OpenFile(name, os.O_RDWR|os.O_CREATE|os.O_EXCL, 0644)
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if err != nil {
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return err
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}
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return nil
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}
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