131 lines
4.0 KiB
Python
131 lines
4.0 KiB
Python
#
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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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from heat.common import exception
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from heat.engine import properties
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from heat.engine import resource
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from heat.openstack.common import log as logging
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from .. import clients # noqa
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logger = logging.getLogger(__name__)
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if clients.marconiclient is None:
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def resource_mapping():
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return {}
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else:
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def resource_mapping():
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return {
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'OS::Marconi::Queue': MarconiQueue,
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}
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class MarconiQueue(resource.Resource):
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PROPERTIES = (
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NAME, METADATA,
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) = (
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'name', 'metadata',
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)
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properties_schema = {
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NAME: properties.Schema(
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properties.Schema.STRING,
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_("Name of the queue instance to create."),
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required=True),
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METADATA: properties.Schema(
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properties.Schema.MAP,
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description=_("Arbitrary key/value metadata to store "
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"contextual information about this queue."),
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update_allowed=True)
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}
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attributes_schema = {
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"queue_id": _("ID of the queue."),
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"href": _("The resource href of the queue.")
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}
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update_allowed_keys = ('Properties',)
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def __init__(self, name, json_snippet, stack):
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super(MarconiQueue, self).__init__(name, json_snippet, stack)
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self.clients = clients.Clients(self.context)
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def marconi(self):
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return self.clients.marconi()
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def physical_resource_name(self):
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return self.properties[self.NAME]
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def handle_create(self):
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'''
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Create a marconi message queue.
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'''
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queue_name = self.physical_resource_name()
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queue = self.marconi().queue(queue_name, auto_create=False)
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# Marconi client doesn't report an error if an queue with the same
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# id/name already exists, which can cause issue with stack update.
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if queue.exists():
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raise exception.Error(_('Message queue %s already exists.')
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% queue_name)
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queue.ensure_exists()
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self.resource_id_set(queue_name)
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return queue
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def check_create_complete(self, queue):
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# set metadata of the newly created queue
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if queue.exists():
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metadata = self.properties.get('metadata')
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if metadata:
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queue.metadata(new_meta=metadata)
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return True
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queue_name = self.physical_resource_name()
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raise exception.Error(_('Message queue %s creation failed.')
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% queue_name)
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def handle_update(self, json_snippet, tmpl_diff, prop_diff):
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'''
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Update queue metadata.
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'''
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if 'metadata' in prop_diff:
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queue = self.marconi().queue(self.resource_id, auto_create=False)
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metadata = prop_diff['metadata']
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queue.metadata(new_meta=metadata)
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def handle_delete(self):
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'''
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Delete a marconi message queue.
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'''
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if not self.resource_id:
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return
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queue = self.marconi().queue(self.resource_id, auto_create=False)
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queue.delete()
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def href(self):
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api_endpoint = self.marconi().api_url
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queue_name = self.physical_resource_name()
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if api_endpoint.endswith('/'):
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return '%squeues/%s' % (api_endpoint, queue_name)
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else:
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return '%s/queues/%s' % (api_endpoint, queue_name)
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def _resolve_attribute(self, name):
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if name == 'queue_id':
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return self.resource_id
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elif name == 'href':
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return self.href()
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