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a file's mtime is not reliable when rotating log by datetime #135

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a file's mtime is not reliable when rotating log by datetime #135

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9 changes: 4 additions & 5 deletions writers_rollingfilewriter.go
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Original file line number Diff line number Diff line change
Expand Up @@ -239,6 +239,7 @@ type rollingFileWriter struct {
fullName bool
maxRolls int
nameMode rollingNameMode
lastRollTime time.Time
self rollerVirtual // Used for virtual calls
}

Expand Down Expand Up @@ -334,9 +335,11 @@ func (rw *rollingFileWriter) createFileAndFolderIfNeeded(first bool) error {
}

rw.currentFileSize = stat.Size()
rw.lastRollTime = stat.ModTime()
} else {
rw.currentFile, err = os.Create(filePath)
rw.currentFileSize = 0
rw.lastRollTime = time.Now()
}
if err != nil {
return err
Expand Down Expand Up @@ -518,11 +521,7 @@ func (rw *rollingFileWriter) Write(bytes []byte) (n int, err error) {
// needs to roll if:
// * file roller max file size exceeded OR
// * time roller interval passed
fi, err := rw.currentFile.Stat()
if err != nil {
return 0, err
}
lastRollTime := fi.ModTime()
lastRollTime := rw.lastRollTime
nr, err := rw.self.needsToRoll(lastRollTime)
if err != nil {
return 0, err
Expand Down