root / kamaki / clients / astakos / __init__.py @ 528550d9
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# Copyright 2012 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or
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# without modification, are permitted provided that the following
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# conditions are met:
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#
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# 1. Redistributions of source code must retain the above
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# copyright notice, this list of conditions and the following
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# disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials
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# provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and
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# documentation are those of the authors and should not be
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# interpreted as representing official policies, either expressed
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# or implied, of GRNET S.A.
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from kamaki.clients import Client, ClientError |
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from logging import getLogger |
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class AstakosClient(Client): |
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"""Synnefo Astakos API client"""
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def __init__(self, base_url, token=None): |
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super(AstakosClient, self).__init__(base_url, token) |
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self._cache = {}
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self.log = getLogger('__name__') |
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def authenticate(self, token=None): |
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"""Get authentication information and store it in this client
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As long as the AstakosClient instance is alive, the latest
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authentication information for this token will be available
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:param token: (str) custom token to authenticate
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:returns: (dict) authentication information
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"""
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self.token = token or self.token |
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self._cache[self.token] = self.get('/tokens').json |
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return self._cache[self.token] |
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def get_services(self, token=None): |
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"""
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:returns: (list) [{name:..., type:..., endpoints:[...]}, ...]
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"""
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token_bu = self.token or token |
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token = token or self.token |
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try:
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r = self._cache[token]
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except KeyError: |
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r = self.authenticate(token)
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finally:
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self.token = token_bu
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return r['serviceCatalog'] |
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def get_service_details(self, service_type, token=None): |
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"""
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:param service_type: (str) compute, object-store, image, account, etc.
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:returns: (dict) {name:..., type:..., endpoints:[...]}
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:raises ClientError: (600) if service_type not in service catalog
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"""
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services = self.get_services(token)
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for service in services: |
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try:
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if service['type'].lower() == service_type.lower(): |
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return service
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except KeyError: |
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self.log.warning('Misformated service %s' % service) |
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raise ClientError(
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'Service type "%s" not in service catalog' % service_type, 600) |
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def get_service_endpoints(self, service_type, version=None, token=None): |
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"""
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:param service_type: (str) can be compute, object-store, etc.
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:param version: (str) the version id of the service
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:returns: (dict) {SNF:uiURL, adminURL, internalURL, publicURL, ...}
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:raises ClientError: (600) if service_type not in service catalog
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:raises ClientError: (601) if #matching endpoints != 1
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"""
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service = self.get_service_details(service_type, token)
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matches = [] |
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for endpoint in service['endpoints']: |
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if (not version) or ( |
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endpoint['version_id'].lower() == version.lower()):
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matches.append(endpoint) |
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if len(matches) != 1: |
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raise ClientError(
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'%s endpoints match type %s %s' % (
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len(matches), service_type,
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('and version_id %s' % version) if version else ''), |
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601)
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return matches[0] |
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def list_users(self): |
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"""list cached users information"""
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r = [] |
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for k, v in self._cache.items(): |
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r.append(dict(v['user'])) |
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r[-1].update(dict(auth_token=k)) |
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return r
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def user_info(self, token=None): |
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"""Get (cached) user information"""
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token_bu = self.token or token |
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token = token or self.token |
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try:
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r = self._cache[token]
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except KeyError: |
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r = self.authenticate(token)
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finally:
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self.token = token_bu
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return r['user'] |
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def term(self, key, token=None): |
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"""Get (cached) term, from user credentials"""
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return self.user_info(token).get(key, None) |