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from abc import ABCMeta
class BaseBrevisUrlBackend(object):
"""Base class for brevisurl backend implementations. Subclasses must at least overwrite shorten_url()."""
__metaclass__ = ABCMeta
def __init__(self, fail_silently=False, **kwargs):
self.fail_silently = fail_silently
self.class_path = '{0}.{1}'.format(self.__module__, self.__class__.__name__)
self.kwargs = kwargs
def open(self):
"""Open a network connection.
This method can be overwritten by backend implementations to
open a network connection.
It's up to the backend implementation to track the status of
a network connection if it's needed by the backend.
The default implementation does nothing.
"""
pass
def close(self):
"""Close a network connection."""
pass
def shorten_url(self, original_url):
"""Shortens url into more compact form.
:param original_url: url that will be shortened
:type original_url: string
:returns: shortened url from original url
:rtype: brevisurl.models.ShortUrl
"""
raise NotImplementedError
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