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# Copyright 2010 Google Inc.
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish, dis-
# tribute, sublicense, and/or sell copies of the Software, and to permit
# persons to whom the Software is furnished to do so, subject to the fol-
# lowing conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
# ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
# SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
"""
Defines an interface which all Auth handlers need to implement.
"""
from boto.plugin import Plugin
class NotReadyToAuthenticate(Exception):
pass
class AuthHandler(Plugin):
capability = []
def __init__(self, host, config, provider):
"""Constructs the handlers.
:type host: string
:param host: The host to which the request is being sent.
:type config: boto.pyami.Config
:param config: Boto configuration.
:type provider: boto.provider.Provider
:param provider: Provider details.
Raises:
NotReadyToAuthenticate: if this handler is not willing to
authenticate for the given provider and config.
"""
pass
def add_auth(self, http_request):
"""Invoked to add authentication details to request.
:type http_request: boto.connection.HTTPRequest
:param http_request: HTTP request that needs to be authenticated.
"""
pass
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