func (state *fileState) pruneToSize(baseFilePath string, maxSize int64) {
state.bgWriter.Wait()
baseDir, baseName, _ := shared.SplitPath(baseFilePath)
files, err := shared.ListFilesByDateMatching(baseDir, baseName+".*")
if err != nil {
Log.Error.Print("Error pruning files: ", err)
return // ### return, error ###
}
totalSize := int64(0)
for _, file := range files {
totalSize += file.Size()
}
for _, file := range files {
if totalSize <= maxSize {
return // ### return, done ###
}
filePath := fmt.Sprintf("%s/%s", baseDir, file.Name())
if err := os.Remove(filePath); err != nil {
Log.Error.Printf("Failed to prune \"%s\": %s", filePath, err.Error())
} else {
Log.Note.Printf("Pruned \"%s\"", filePath)
totalSize -= file.Size()
}
}
}
func (state *fileState) compressAndCloseLog(sourceFile *os.File) {
state.bgWriter.Add(1)
defer state.bgWriter.Done()
// Generate file to zip into
sourceFileName := sourceFile.Name()
sourceDir, sourceBase, _ := shared.SplitPath(sourceFileName)
targetFileName := fmt.Sprintf("%s/%s.gz", sourceDir, sourceBase)
targetFile, err := os.OpenFile(targetFileName, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0666)
if err != nil {
Log.Error.Print("File compress error:", err)
sourceFile.Close()
return
}
// Create zipfile and compress data
Log.Note.Print("Compressing " + sourceFileName)
sourceFile.Seek(0, 0)
targetWriter := gzip.NewWriter(targetFile)
spin := shared.NewSpinner(shared.SpinPriorityHigh)
for err == nil {
_, err = io.CopyN(targetWriter, sourceFile, 1<<20) // 1 MB chunks
spin.Yield() // Be async!
}
// Cleanup
sourceFile.Close()
targetWriter.Close()
targetFile.Close()
if err != nil && err != io.EOF {
Log.Warning.Print("Compression failed:", err)
err = os.Remove(targetFileName)
if err != nil {
Log.Error.Print("Compressed file remove failed:", err)
}
return
}
// Remove original log
err = os.Remove(sourceFileName)
if err != nil {
Log.Error.Print("Uncompressed file remove failed:", err)
}
}
func (state *fileState) pruneByCount(baseFilePath string, count int) {
state.bgWriter.Wait()
baseDir, baseName, _ := shared.SplitPath(baseFilePath)
files, err := shared.ListFilesByDateMatching(baseDir, baseName+".*")
if err != nil {
Log.Error.Print("Error pruning files: ", err)
return // ### return, error ###
}
numFilesToPrune := len(files) - count
if numFilesToPrune < 1 {
return // ## return, nothing to prune ###
}
for i := 0; i < numFilesToPrune; i++ {
filePath := fmt.Sprintf("%s/%s", baseDir, files[i].Name())
if err := os.Remove(filePath); err != nil {
Log.Error.Printf("Failed to prune \"%s\": %s", filePath, err.Error())
} else {
Log.Note.Printf("Pruned \"%s\"", filePath)
}
}
}