heat/heat/engine/event.py

109 lines
3.9 KiB
Python

#
# 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 heat.common import identifier
from heat.objects import event as event_object
from heat.objects import resource_properties_data as rpd_objects
class Event(object):
"""Class representing a Resource state change."""
def __init__(self, context, stack, action, status, reason,
physical_resource_id, resource_properties, resource_name,
resource_type, uuid=None, timestamp=None, id=None):
"""Initialise from a context, stack, and event information.
The timestamp and database ID may also be initialised if the event is
already in the database.
"""
self.context = context
self._stack_identifier = stack.identifier()
self.action = action
self.status = status
self.reason = reason
self.physical_resource_id = physical_resource_id
self.resource_name = resource_name
self.resource_type = resource_type
self.rsrc_prop_data = None
if isinstance(resource_properties,
rpd_objects.ResourcePropertiesData):
self.rsrc_prop_data = resource_properties
self.resource_properties = self.rsrc_prop_data.data
elif resource_properties is None:
self.resource_properties = {}
else:
raise AssertionError(
'resource_properties is unexpected type %s' %
type(resource_properties).__name__)
self.uuid = uuid
self.timestamp = timestamp
self.id = id
def store(self):
"""Store the Event in the database."""
ev = {
'resource_name': self.resource_name,
'physical_resource_id': self.physical_resource_id,
'stack_id': self._stack_identifier.stack_id,
'resource_action': self.action,
'resource_status': self.status,
'resource_status_reason': self.reason,
'resource_type': self.resource_type,
}
if self.uuid is not None:
ev['uuid'] = self.uuid
if self.timestamp is not None:
ev['created_at'] = self.timestamp
if self.rsrc_prop_data:
ev['rsrc_prop_data_id'] = self.rsrc_prop_data.id
new_ev = event_object.Event.create(self.context, ev)
self.id = new_ev.id
self.timestamp = new_ev.created_at
self.uuid = new_ev.uuid
return self.id
def identifier(self):
"""Return a unique identifier for the event."""
if self.uuid is None:
return None
res_id = identifier.ResourceIdentifier(
resource_name=self.resource_name, **self._stack_identifier)
return identifier.EventIdentifier(event_id=str(self.uuid), **res_id)
def as_dict(self):
return {
'timestamp': self.timestamp.isoformat(),
'version': '0.1',
'type': 'os.heat.event',
'id': self.uuid,
'payload': {
'resource_name': self.resource_name,
'physical_resource_id': self.physical_resource_id,
'stack_id': self._stack_identifier.stack_id,
'resource_action': self.action,
'resource_status': self.status,
'resource_status_reason': self.reason,
'resource_type': self.resource_type,
'resource_properties': self.resource_properties,
'version': '0.1'
}
}