Synnefo

# Copyright 2013-2014 GRNET S.A. All rights reserved.

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import logging

from django.conf import settings

from synnefo.lib import join_urls, parse_base_url

from synnefo.api.services import cyclades_services as vanilla_cyclades_services

from synnefo.lib.services import fill_endpoints

from astakosclient import AstakosClient

from copy import deepcopy

logger = logging.getLogger(__name__)

# --------------------------------------------------------------------

# Process Cyclades settings

BASE_URL = getattr(settings, 'CYCLADES_BASE_URL',

                   'https://compute.example.synnefo.org/compute/')

BASE_HOST, BASE_PATH = parse_base_url(BASE_URL)

SERVICE_TOKEN = getattr(settings, 'CYCLADES_SERVICE_TOKEN', "")

cyclades_services = deepcopy(vanilla_cyclades_services)

fill_endpoints(cyclades_services, BASE_URL)

COMPUTE_PREFIX = cyclades_services['cyclades_compute']['prefix']

NETWORK_PREFIX = cyclades_services['cyclades_network']['prefix']

VMAPI_PREFIX = cyclades_services['cyclades_vmapi']['prefix']

PLANKTON_PREFIX = cyclades_services['cyclades_plankton']['prefix']

HELPDESK_PREFIX = cyclades_services['cyclades_helpdesk']['prefix']

UI_PREFIX = cyclades_services['cyclades_ui']['prefix']

USERDATA_PREFIX = cyclades_services['cyclades_userdata']['prefix']

ADMIN_PREFIX = cyclades_services['cyclades_admin']['prefix']

COMPUTE_ROOT_URL = join_urls(BASE_URL, COMPUTE_PREFIX)

# --------------------------------------------------------------------

# Process Astakos settings

ASTAKOS_AUTH_URL = getattr(

    settings, 'ASTAKOS_AUTH_URL',

    'https://accounts.example.synnefo.org/astakos/identity/v2.0')

# --------------------------------------

# Define a LazyAstakosUrl

# This is used to define ASTAKOS_ACCOUNT_URL and

# ASTAKOS_UI_URL and should never be used as is.

class LazyAstakosUrl(object):

    def __init__(self, endpoints_name):

        self.endpoints_name = endpoints_name

    def __str__(self):

        if not hasattr(self, 'str'):

            try:

                astakos_client = \

                    AstakosClient(SERVICE_TOKEN, ASTAKOS_AUTH_URL)

                self.str = getattr(astakos_client, self.endpoints_name)

            except Exception as excpt:

                logger.exception(

                    "Could not retrieve endpoints from Astakos url %s: %s",

                    ASTAKOS_AUTH_URL, excpt)

                return ""

        return self.str

# --------------------------------------

# Define ASTAKOS_UI_URL and ASTAKOS_ACCOUNT_URL as LazyAstakosUrl

# These are used to define the proxy paths.

# These have to be resolved lazily (by the proxy function) so

# they should not be used as is.

ASTAKOS_ACCOUNT_URL = LazyAstakosUrl('account_url')

ASTAKOS_UI_URL = LazyAstakosUrl('ui_url')

# --------------------------------------

# Define Astakos prefixes

ASTAKOS_PROXY_PREFIX = getattr(settings, 'CYCLADES_PROXY_PREFIX', '_astakos')

ASTAKOS_AUTH_PREFIX = join_urls('/', ASTAKOS_PROXY_PREFIX, 'identity')

ASTAKOS_ACCOUNT_PREFIX = join_urls('/', ASTAKOS_PROXY_PREFIX, 'account')

ASTAKOS_UI_PREFIX = join_urls('/', ASTAKOS_PROXY_PREFIX, 'ui')

# --------------------------------------

# Define Astakos proxy paths

ASTAKOS_AUTH_PROXY_PATH = join_urls(BASE_PATH, ASTAKOS_AUTH_PREFIX)

ASTAKOS_ACCOUNT_PROXY_PATH = join_urls(BASE_PATH, ASTAKOS_ACCOUNT_PREFIX)

ASTAKOS_UI_PROXY_PATH = join_urls(BASE_PATH, ASTAKOS_UI_PREFIX)