# Copyright 2013: Mirantis Inc.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.

from rally.benchmark.context import base
from rally.common import log as logging
from rally import osclients

LOG = logging.getLogger(__name__)


@base.context(name="prepare_ec2_client", order=1000)
class PrepareEC2ClientContext(base.Context):

    def setup(self):
        """This method is called before the task start."""
        try:
            user = self.context['users'][0]
            osclient = osclients.Clients(user['endpoint'])
            keystone = osclient.keystone()
            creds = keystone.ec2.list(user['id'])
            if not creds:
                creds = keystone.ec2.create(user['id'], user['tenant_id'])
            else:
                creds = creds[0]
            url = keystone.service_catalog.url_for(service_type='ec2')
            url_parts = url.rpartition(':')
            nova_url = url_parts[0] + ':8773/' + url_parts[2].partition('/')[2]
            self.context['users'][0]['ec2args'] = {
                'region': 'RegionOne',
                'url': url,
                'nova_url': nova_url,
                'access': creds.access,
                'secret': creds.secret
            }
        except Exception as e:
            msg = "Can't prepare ec2 client: %s" % e.message
            if logging.is_debug():
                LOG.exception(msg)
            else:
                LOG.warning(msg)

    def cleanup(self):
        pass