def __init__(
self,
preview_builder_factory: PreviewBuilderFactory,
cache_path: str,
file_path: str,
file_ext: str,
):
self.mimetype = preview_builder_factory.get_file_mimetype(file_path, file_ext)
self.builder = preview_builder_factory.get_preview_builder(self.mimetype)
self.hash = hashlib.md5(file_path.encode("utf-8")).hexdigest()
file_lock_path = os.path.join(cache_path, self.hash + LOCKFILE_EXTENSION)
self.filelock = FileLock(file_lock_path, timeout=LOCK_DEFAULT_TIMEOUT)
def __init__(self,
cache_folder_path: str,
create_folder: bool = False) -> None:
"""
:param cache_folder_path: path to the cache folder.
This is where previews will be stored
:param create_folder: if True, then create the cache folder
if it does not exist
"""
self.logger = logging.getLogger(LOGGER_NAME)
cache_folder_path = os.path.join(cache_folder_path,
"") # add trailing slash
# nopep8 see https://stackoverflow.com/questions/2736144/python-add-trailing-slash-to-directory-string-os-independently
self.cache_path = cache_folder_path # type: str
self._factory = (
PreviewBuilderFactory.get_instance()
) # nopep8 keep link to singleton instance as it will be often used
if create_folder and not os.path.isdir(self.cache_path):
try:
os.makedirs(self.cache_path)
except OSError:
self.logger.error("cant create cache folder [{}]".format(
self.cache_path))
def get_mimetype(self, file_path):
"""
Return detected mimetype of the file
:param file_path: path of the file
:return: mimetype of the file
"""
return PreviewBuilderFactory().get_file_mimetype(file_path)
def get_mimetype(self, file_path: str, file_ext: str = "") -> str:
"""
Return detected mimetype of the file
:param file_path: path of the file
:param file_ext: extension associated to the file. Eg 'jpg'. May be empty -
it's usefull if the extension can't be found in file_path
:return: mimetype of the file
"""
return (PreviewBuilderFactory().get_instance().get_file_mimetype(
file_path, file_ext)) # nopep8