// open does open the file given under h.Path and assigns the file handler to h.file
func (h *Harvester) open() error {
// Special handling that "-" means to read from standard input
if h.Path == "-" {
h.file = os.Stdin
return nil
}
for {
var err error
h.file, err = input.ReadOpen(h.Path)
if err != nil {
// TODO: This is currently end endless retry, should be set to a max?
// retry on failure.
logp.Err("Failed opening %s: %s", h.Path, err)
time.Sleep(5 * time.Second)
} else {
break
}
}
file := &input.File{
File: h.file,
}
// Check we are not following a rabbit hole (symlinks, etc.)
if !file.IsRegularFile() {
return errors.New("Given file is not a regular file.")
}
h.setFileOffset()
return nil
}
func (h *Harvester) openFile() (encoding.Encoding, error) {
var file *os.File
var err error
var encoding encoding.Encoding
// TODO: This is currently end endless retry, should be set to a max?
// retry on failure.
for {
file, err = input.ReadOpen(h.Path)
if err == nil {
// Check we are not following a rabbit hole (symlinks, etc.)
if !input.IsRegularFile(file) {
file.Close()
return nil, errors.New("Given file is not a regular file.")
}
encoding, err = h.encoding(file)
if err == nil {
break
}
file.Close()
if err != transform.ErrShortSrc {
return nil, err
}
logp.Info("Initialising encoding for '%v' failed due to file being to short")
}
logp.Err("Failed opening %s: %s", h.Path, err)
time.Sleep(5 * time.Second)
}
// update file offset
err = h.initFileOffset(file)
if err != nil {
file.Close()
return nil, err
}
// yay, open file
h.file = fileSource{file}
return encoding, nil
}