def save(self): """Saves PluginStorage content to disk :raises .errors.PluginStorageError: when unable to serialize the data or write it to the filesystem """ if not self._initialized: errmsg = "Unable to save, no values have been added to PluginStorage." logger.error(errmsg) raise errors.PluginStorageError(errmsg) try: serialized = json.dumps(self._data) except TypeError as e: errmsg = "Could not serialize PluginStorage data: {0}".format( str(e)) logger.error(errmsg) raise errors.PluginStorageError(errmsg) try: with os.fdopen(os.open(self._storagepath, os.O_WRONLY | os.O_CREAT | os.O_TRUNC, 0o600), 'w') as fh: fh.write(serialized) except IOError as e: errmsg = "Could not write PluginStorage data to file {0} : {1}".format( self._storagepath, str(e)) logger.error(errmsg) raise errors.PluginStorageError(errmsg)
def save(self): """Saves PluginStorage content to disk :raises .errors.PluginStorageError: when unable to serialize the data or write it to the filesystem """ if not self._initialized: errmsg = "Unable to save, no values have been added to PluginStorage." logger.error(errmsg) raise errors.PluginStorageError(errmsg) try: serialized = json.dumps(self._data) except TypeError as e: errmsg = "Could not serialize PluginStorage data: {0}".format( str(e)) logger.error(errmsg) raise errors.PluginStorageError(errmsg) try: with os.fdopen( filesystem.open(self._storagepath, os.O_WRONLY | os.O_CREAT | os.O_TRUNC, 0o600), 'w') as fh: fh.write(serialized) except IOError as e: errmsg = "Could not write PluginStorage data to file {0} : {1}".format( self._storagepath, str(e)) logger.error(errmsg) raise errors.PluginStorageError(errmsg)
def safe_open(path, mode="w", chmod=None): """Safely open a file. :param str path: Path to a file. :param str mode: Same os `mode` for `open`. :param int chmod: Same as `mode` for `filesystem.open`, uses Python defaults if ``None``. """ open_args = () # type: Union[Tuple[()], Tuple[int]] if chmod is not None: open_args = (chmod, ) fdopen_args = () # type: Union[Tuple[()], Tuple[int]] fd = filesystem.open(path, os.O_CREAT | os.O_EXCL | os.O_RDWR, *open_args) return os.fdopen(fd, mode, *fdopen_args)
def safe_open(path, mode="w", chmod=None, buffering=None): """Safely open a file. :param str path: Path to a file. :param str mode: Same os `mode` for `open`. :param int chmod: Same as `mode` for `os.open`, uses Python defaults if ``None``. :param int buffering: Same as `bufsize` for `os.fdopen`, uses Python defaults if ``None``. """ open_args = () # type: Union[Tuple[()], Tuple[int]] if chmod is not None: open_args = (chmod,) fdopen_args = () # type: Union[Tuple[()], Tuple[int]] if buffering is not None: fdopen_args = (buffering,) fd = os.open(path, os.O_CREAT | os.O_EXCL | os.O_RDWR, *open_args) return os.fdopen(fd, mode, *fdopen_args)