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import traceback
try:
from cStringIO import StringIO
except ImportError:
from StringIO import StringIO
import brevisurl.settings
from brevisurl.utils import load_object
def get_connection(backend=None, fail_silently=False, **kwargs):
"""Load a brevisurl backend and return an instance of it.
If backend is None (default) settings.BREVISURL_BACKEND is used.
Both fail_silently and other keyword arguments are used in the
constructor of the backend.
:param backend: path to brevisurl backend
:type backend: string
:param fail_silently: whether to fail silently when error intercepted or not
:type fail_silently: bool
:returns: instance os BaseBrevisUrlBackend
:rtype: brevisurl.backends.base.BaseBrevisUrlBackend
"""
path = backend or brevisurl.settings.DEFAULT_BACKEND
klass = load_object(path)
return klass(fail_silently=fail_silently, **kwargs)
def shorten_url(original_url, fail_silently=False, connection=None):
"""Shortcut util for shortening urls using default brevisurl backend if none supplied.
:param original_url: url that will be shortened
:type original_url: string
:param backend: one of brevisurl backends
:type backend: brevisurl.backends.BaseBrevisUrlBackend
:returns: shortened url from original url
:rtype: brevisurl.models.ShortUrl
"""
connection = connection or get_connection(fail_silently=fail_silently)
return connection.shorten_url(original_url)
class Error(Exception):
"""Base django-brevisurl Error."""
def __init__(self, value):
s = StringIO()
traceback.print_exc(file=s)
self.value = (value, s.getvalue())
s.close()
def __str__(self):
return repr(self.value)
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