246 lines
8.9 KiB
Python
246 lines
8.9 KiB
Python
# Copyright (c) 2012 Citrix Systems, Inc.
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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"); 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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"""The Aggregate admin API extension."""
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import datetime
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from webob import exc
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from nova.api.openstack import extensions
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from nova.compute import api as compute_api
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from nova import exception
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from nova.openstack.common.gettextutils import _
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from nova.openstack.common import log as logging
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from nova import utils
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LOG = logging.getLogger(__name__)
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authorize = extensions.extension_authorizer('compute', 'aggregates')
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def _get_context(req):
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return req.environ['nova.context']
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def get_host_from_body(fn):
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"""Makes sure that the host exists."""
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def wrapped(self, req, id, body, *args, **kwargs):
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if len(body) == 1 and "host" in body:
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host = body['host']
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else:
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raise exc.HTTPBadRequest()
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return fn(self, req, id, host, *args, **kwargs)
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return wrapped
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class AggregateController(object):
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"""The Host Aggregates API controller for the OpenStack API."""
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def __init__(self):
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self.api = compute_api.AggregateAPI()
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def index(self, req):
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"""Returns a list a host aggregate's id, name, availability_zone."""
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context = _get_context(req)
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authorize(context)
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aggregates = self.api.get_aggregate_list(context)
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return {'aggregates': [self._marshall_aggregate(a)['aggregate']
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for a in aggregates]}
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def create(self, req, body):
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"""Creates an aggregate, given its name and
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optional availability zone.
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"""
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context = _get_context(req)
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authorize(context)
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if len(body) != 1:
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raise exc.HTTPBadRequest()
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try:
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host_aggregate = body["aggregate"]
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name = host_aggregate["name"]
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except KeyError:
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raise exc.HTTPBadRequest()
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avail_zone = host_aggregate.get("availability_zone")
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try:
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utils.check_string_length(name, "Aggregate name", 1, 255)
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except exception.InvalidInput as e:
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raise exc.HTTPBadRequest(explanation=e.format_message())
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try:
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aggregate = self.api.create_aggregate(context, name, avail_zone)
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except exception.AggregateNameExists as e:
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LOG.info(e)
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raise exc.HTTPConflict()
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except exception.InvalidAggregateAction as e:
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LOG.info(e)
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raise
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return self._marshall_aggregate(aggregate)
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def show(self, req, id):
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"""Shows the details of an aggregate, hosts and metadata included."""
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context = _get_context(req)
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authorize(context)
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try:
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aggregate = self.api.get_aggregate(context, id)
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except exception.AggregateNotFound:
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LOG.info(_("Cannot show aggregate: %s"), id)
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raise exc.HTTPNotFound()
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return self._marshall_aggregate(aggregate)
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def update(self, req, id, body):
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"""Updates the name and/or availability_zone of given aggregate."""
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context = _get_context(req)
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authorize(context)
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if len(body) != 1:
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raise exc.HTTPBadRequest()
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try:
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updates = body["aggregate"]
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except KeyError:
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raise exc.HTTPBadRequest()
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if len(updates) < 1:
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raise exc.HTTPBadRequest()
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for key in updates.keys():
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if key not in ["name", "availability_zone"]:
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raise exc.HTTPBadRequest()
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if 'name' in updates:
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try:
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utils.check_string_length(updates['name'], "Aggregate name", 1,
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255)
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except exception.InvalidInput as e:
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raise exc.HTTPBadRequest(explanation=e.format_message())
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try:
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aggregate = self.api.update_aggregate(context, id, updates)
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except exception.AggregateNotFound:
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LOG.info(_('Cannot update aggregate: %s'), id)
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raise exc.HTTPNotFound()
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except exception.InvalidAggregateAction as e:
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raise exc.HTTPBadRequest(explanation=e.format_message())
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return self._marshall_aggregate(aggregate)
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def delete(self, req, id):
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"""Removes an aggregate by id."""
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context = _get_context(req)
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authorize(context)
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try:
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self.api.delete_aggregate(context, id)
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except exception.AggregateNotFound:
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LOG.info(_('Cannot delete aggregate: %s'), id)
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raise exc.HTTPNotFound()
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def action(self, req, id, body):
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_actions = {
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'add_host': self._add_host,
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'remove_host': self._remove_host,
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'set_metadata': self._set_metadata,
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}
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for action, data in body.iteritems():
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if action not in _actions.keys():
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msg = _('Aggregates does not have %s action') % action
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raise exc.HTTPBadRequest(explanation=msg)
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return _actions[action](req, id, data)
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raise exc.HTTPBadRequest(explanation=_("Invalid request body"))
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@get_host_from_body
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def _add_host(self, req, id, host):
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"""Adds a host to the specified aggregate."""
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context = _get_context(req)
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authorize(context)
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try:
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aggregate = self.api.add_host_to_aggregate(context, id, host)
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except (exception.AggregateNotFound, exception.ComputeHostNotFound):
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LOG.info(_('Cannot add host %(host)s in aggregate %(id)s'),
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{'host': host, 'id': id})
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raise exc.HTTPNotFound()
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except (exception.AggregateHostExists,
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exception.InvalidAggregateAction) as e:
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LOG.info(_('Cannot add host %(host)s in aggregate %(id)s'),
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{'host': host, 'id': id})
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raise exc.HTTPConflict(explanation=e.format_message())
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return self._marshall_aggregate(aggregate)
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@get_host_from_body
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def _remove_host(self, req, id, host):
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"""Removes a host from the specified aggregate."""
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context = _get_context(req)
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authorize(context)
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try:
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aggregate = self.api.remove_host_from_aggregate(context, id, host)
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except (exception.AggregateNotFound, exception.AggregateHostNotFound,
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exception.ComputeHostNotFound):
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LOG.info(_('Cannot remove host %(host)s in aggregate %(id)s'),
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{'host': host, 'id': id})
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raise exc.HTTPNotFound()
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except exception.InvalidAggregateAction:
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LOG.info(_('Cannot remove host %(host)s in aggregate %(id)s'),
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{'host': host, 'id': id})
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raise exc.HTTPConflict()
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return self._marshall_aggregate(aggregate)
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def _set_metadata(self, req, id, body):
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"""Replaces the aggregate's existing metadata with new metadata."""
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context = _get_context(req)
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authorize(context)
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if len(body) != 1:
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raise exc.HTTPBadRequest()
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try:
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metadata = body["metadata"]
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except KeyError:
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raise exc.HTTPBadRequest()
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try:
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aggregate = self.api.update_aggregate_metadata(context,
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id, metadata)
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except exception.AggregateNotFound:
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LOG.info(_('Cannot set metadata %(metadata)s in aggregate %(id)s'),
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{'metadata': metadata, 'id': id})
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raise exc.HTTPNotFound()
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except exception.InvalidAggregateAction as e:
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raise exc.HTTPBadRequest(explanation=e.format_message())
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return self._marshall_aggregate(aggregate)
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def _marshall_aggregate(self, aggregate):
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_aggregate = {}
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for key, value in aggregate.items():
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# NOTE(danms): The original API specified non-TZ-aware timestamps
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if isinstance(value, datetime.datetime):
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value = value.replace(tzinfo=None)
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_aggregate[key] = value
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return {"aggregate": _aggregate}
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class Aggregates(extensions.ExtensionDescriptor):
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"""Admin-only aggregate administration."""
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name = "Aggregates"
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alias = "os-aggregates"
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namespace = "http://docs.openstack.org/compute/ext/aggregates/api/v1.1"
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updated = "2012-01-12T00:00:00+00:00"
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def get_resources(self):
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resources = []
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res = extensions.ResourceExtension('os-aggregates',
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AggregateController(),
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member_actions={"action": "POST", })
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resources.append(res)
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return resources
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