Synnefo » ./kamaki

# Copyright 2012 GRNET S.A. All rights reserved.

#

# Redistribution and use in source and binary forms, with or

# without modification, are permitted provided that the following

# conditions are met:

#

#   1. Redistributions of source code must retain the above

#      copyright notice, this list of conditions and the following

#      disclaimer.

#

#   2. Redistributions in binary form must reproduce the above

#      copyright notice, this list of conditions and the following

#      disclaimer in the documentation and/or other materials

#      provided with the distribution.

#

# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

# POSSIBILITY OF SUCH DAMAGE.

#

# The views and conclusions contained in the software and

# documentation are those of the authors and should not be

# interpreted as representing official policies, either expressed

# or implied, of GRNET S.A.

from kamaki.clients import Client, ClientError

class AstakosClient(Client):

    """GRNet Astakos API client"""

    _cache = {}

    def __init__(self, base_url, token):

        super(AstakosClient, self).__init__(base_url, token)

    def authenticate(self, token=None):

        """Get authentication information and store it in this client

        As long as the AstakosClient instance is alive, the latest

        authentication information for this token will be available

        :param token: (str) custom token to authenticate

        :returns: (dict) authentication information

        """

        self.token = token or self.token

        self._cache[self.token] = self.get('/im/authenticate').json

        return self._cache[self.token]

    def list(self):

        """list cached user information"""

        r = []

        for k, v in self._cache.items():

            r.append(dict(v))

            r[-1].update(dict(auth_token=k))

        return r

    def info(self, token=None):

        """Get (cached) user information"""

        token_bu = self.token

        token = token or self.token

        try:

            r = self._cache[token]

        except KeyError:

            r = self.authenticate(token)

        self.token = token_bu

        return r

    def term(self, key, token=None):

        """Get (cached) term, from user credentials"""

        return self.info(token).get(key, None)