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101 lines (80 loc) · 2.96 KB
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# -*- coding: utf-8 -*-
"""
github3.decorators
==================
This module provides decorators to the rest of the library
"""
from functools import wraps
from requests.models import Response
import os
try: # (No coverage)
# python2
from StringIO import StringIO # (No coverage)
except ImportError: # (No coverage)
# python3
from io import BytesIO as StringIO
class RequestsStringIO(StringIO):
def read(self, n=-1, *args, **kwargs):
# StringIO is an old-style class, so can't use super
return StringIO.read(self, n)
def requires_auth(func):
"""Decorator to note which object methods require authorization."""
@wraps(func)
def auth_wrapper(self, *args, **kwargs):
if hasattr(self, 'session') and self.session.has_auth():
return func(self, *args, **kwargs)
else:
from .exceptions import error_for
# Mock a 401 response
r = generate_fake_error_response(
'{"message": "Requires authentication"}'
)
raise error_for(r)
return auth_wrapper
def requires_basic_auth(func):
"""Specific (basic) authentication decorator.
This is used to note which object methods require username/password
authorization and won't work with token based authorization.
"""
@wraps(func)
def auth_wrapper(self, *args, **kwargs):
if hasattr(self, 'session') and self.session.auth:
return func(self, *args, **kwargs)
else:
from .exceptions import error_for
# Mock a 401 response
r = generate_fake_error_response(
'{"message": "Requires username/password authentication"}'
)
raise error_for(r)
return auth_wrapper
def requires_app_credentials(func):
"""Require client_id and client_secret to be associated.
This is used to note and enforce which methods require a client_id and
client_secret to be used.
"""
@wraps(func)
def auth_wrapper(self, *args, **kwargs):
client_id, client_secret = self.session.retrieve_client_credentials()
if client_id and client_secret:
return func(self, *args, **kwargs)
else:
from .exceptions import error_for
# Mock a 401 response
r = generate_fake_error_response(
'{"message": "Requires username/password authentication"}'
)
raise error_for(r)
return auth_wrapper
def generate_fake_error_response(msg, status_code=401, encoding='utf-8'):
r = Response()
r.status_code = status_code
r.encoding = encoding
r.raw = RequestsStringIO(msg.encode())
r._content_consumed = True
r._content = r.raw.read()
return r
# Use mock decorators when generating documentation, so all functino signatures
# are displayed correctly
if os.getenv('GENERATING_DOCUMENTATION', None) == 'github3':
requires_auth = requires_basic_auth = lambda x: x # noqa # (No coverage)