MediaFile deletion bails on with missing files on cloudfiles

[spaetz]

MediaEntry.delete does this:

        try:
            delete_media_files(self)
        except OSError, error:

joar says that the cloudfiles plugin raises a different exception when files are missing (somthing that is an IOError subclass).

So the very least we need to do here, is to also catch IOError and make them non-fatal.

Even better, if we could make the file deletion be celery tasks. In this case we would get automatic retries in case of failures (with separate-process celery) even after some waiting time.

[Loic Dachary]

It looks like a way to fix this would be for mediagoblin/storage/cloudfiles.py to remap the cloudfile error condition indicating that a file does not exist into OSError for the benefit of MediaEntry.delete.

    def delete_file(self, filepath):
        # TODO: Also delete unused directories if empty (safely, with
        # checks to avoid race conditions).
        try:
            self.container.delete_object(
                self._resolve_filepath(filepath))
        except cloudfiles.container.ResponseError:
            pass
        finally:
            pass