75 lines
2.6 KiB
Python
75 lines
2.6 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2012 United States Government as represented by the
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# Administrator of the National Aeronautics and Space Administration.
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# All Rights Reserved.
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#
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# Copyright 2012 Nebula, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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Context processors used by Horizon.
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"""
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import logging
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from django.conf import settings
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LOG = logging.getLogger(__name__)
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def horizon(request):
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""" The main Horizon context processor. Required for Horizon to function.
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The following variables are added to the request context:
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``authorized_tenants``
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A list of tenant objects which the current user has access to.
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``regions``
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A dictionary containing information about region support, the current
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region, and available regions.
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Additionally, it sets the names ``True`` and ``False`` in the context
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to their boolean equivalents for convenience.
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.. warning::
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Don't put API calls in context processors; they will be called once
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for each template/template fragment which takes context that is used
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to render the complete output.
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"""
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context = {"HORIZON_CONFIG": getattr(settings, "HORIZON_CONFIG", {}),
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"True": True,
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"False": False}
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# Auth/Keystone context
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context.setdefault('authorized_tenants', [])
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current_dash = request.horizon['dashboard']
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needs_tenants = getattr(current_dash, 'supports_tenants', False)
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if request.user.is_authenticated() and needs_tenants:
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context['authorized_tenants'] = request.user.authorized_tenants
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# Region context/support
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available_regions = getattr(settings, 'AVAILABLE_REGIONS', [])
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regions = {'support': len(available_regions) > 1,
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'current': {'endpoint': request.session.get('region_endpoint'),
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'name': request.session.get('region_name')},
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'available': [{'endpoint': region[0], 'name':region[1]} for
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region in available_regions]}
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context['regions'] = regions
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return context
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