63 lines
2.2 KiB
Python
63 lines
2.2 KiB
Python
# Copyright 2011 OpenStack LLC.
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# Copyright 2011, Piston Cloud Computing, Inc.
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# Copyright 2011 Nebula, Inc.
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#
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from . import exceptions
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class ServiceCatalog(object):
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"""Helper methods for dealing with a Keystone Service Catalog."""
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def __init__(self, resource_dict):
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self.catalog = resource_dict
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def get_token(self):
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"""Fetch token details fron service catalog"""
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token = {'id': self.catalog['token']['id'],
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'expires': self.catalog['token']['expires']}
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try:
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token['user_id'] = self.catalog['user']['id']
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token['tenant_id'] = self.catalog['token']['tenant']['id']
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except:
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# just leave the tenant and user out if it doesn't exist
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pass
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return token
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def url_for(self, attr=None, filter_value=None,
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service_type='loadbalancer', endpoint_type='publicURL'):
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"""Fetch an endpoint from the service catalog.
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Fetch the specified endpoint from the service catalog for
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a particular endpoint attribute. If no attribute is given, return
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the first endpoint of the specified type.
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See tests for a sample service catalog.
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"""
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catalog = self.catalog.get('serviceCatalog', [])
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for service in catalog:
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if service['type'] != service_type:
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continue
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endpoints = service['endpoints']
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for endpoint in endpoints:
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if not filter_value or endpoint.get(attr) == filter_value:
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return endpoint[endpoint_type]
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raise exceptions.EndpointNotFound('Endpoint not found.')
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