141 lines
5.6 KiB
Python
141 lines
5.6 KiB
Python
# Copyright 2016 - Alcatel-Lucent
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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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from oslo_config import cfg
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from oslo_log import log as logging
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from vitrage.common.constants import DatasourceProperties as DSProps
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from vitrage.common.constants import EdgeLabel
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from vitrage.common.constants import EntityCategory
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from vitrage.common.constants import GraphAction
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from vitrage.common.constants import VertexProperties as VProps
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from vitrage.datasources.nova.host import NOVA_HOST_DATASOURCE
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from vitrage.datasources.nova.instance.field_extractor import \
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LegacyNotificationFieldExtractor
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from vitrage.datasources.nova.instance.field_extractor import \
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SnapshotEventFieldExtractor
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from vitrage.datasources.nova.instance.field_extractor import \
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VersionedNotificationFieldExtractor
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from vitrage.datasources.nova.instance import NOVA_INSTANCE_DATASOURCE
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from vitrage.datasources.resource_transformer_base import \
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ResourceTransformerBase
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from vitrage.datasources import transformer_base as tbase
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from vitrage.datasources.transformer_base import extract_field_value
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import vitrage.graph.utils as graph_utils
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CONF = cfg.CONF
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LOG = logging.getLogger(__name__)
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class InstanceTransformer(ResourceTransformerBase):
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snapshot_extractor = SnapshotEventFieldExtractor()
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legacy_notifications_extractor = LegacyNotificationFieldExtractor()
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versioned_notifications_extractor = VersionedNotificationFieldExtractor()
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# graph actions which need to refer them differently
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GRAPH_ACTION_MAPPING = {
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'compute.instance.delete.end': GraphAction.DELETE_ENTITY,
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'instance.delete.end': GraphAction.DELETE_ENTITY,
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}
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def _create_snapshot_entity_vertex(self, entity_event):
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LOG.debug('got snapshot')
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return self._create_vertex(entity_event)
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def _create_update_entity_vertex(self, entity_event):
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LOG.debug('got event: %s', entity_event[DSProps.EVENT_TYPE])
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return self._create_vertex(entity_event)
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def _create_vertex(self, entity_event):
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field_extractor = self._get_field_extractor(entity_event)
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if not field_extractor:
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LOG.warning('Failed to identify event type for event: %s',
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entity_event)
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return
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metadata = {
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VProps.NAME: field_extractor.name(entity_event),
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VProps.PROJECT_ID: field_extractor.tenant_id(entity_event),
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'host_id': field_extractor.host(entity_event)
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}
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instance_name = field_extractor.instance_name(entity_event)
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if instance_name:
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metadata['instance_name'] = instance_name
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vitrage_sample_timestamp = entity_event[DSProps.SAMPLE_DATE]
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# TODO(Alexey): need to check that only the UPDATE datasource_action
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# will update the UPDATE_TIMESTAMP property
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update_timestamp = self._format_update_timestamp(
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extract_field_value(entity_event, DSProps.SAMPLE_DATE),
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vitrage_sample_timestamp)
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return graph_utils.create_vertex(
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self._create_entity_key(entity_event),
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vitrage_category=EntityCategory.RESOURCE,
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vitrage_type=NOVA_INSTANCE_DATASOURCE,
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vitrage_sample_timestamp=vitrage_sample_timestamp,
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entity_id=field_extractor.entity_id(entity_event),
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entity_state=field_extractor.state(entity_event),
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update_timestamp=update_timestamp,
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metadata=metadata)
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def _create_snapshot_neighbors(self, entity_event):
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return self._create_instance_neighbors(entity_event)
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def _create_update_neighbors(self, entity_event):
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return self._create_instance_neighbors(entity_event)
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def _create_instance_neighbors(self, entity_event):
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field_extractor = self._get_field_extractor(entity_event)
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if not field_extractor:
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LOG.warning('Failed to identify event type for event: %s',
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entity_event)
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return []
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host_name = field_extractor.host(entity_event)
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host_neighbor = self._create_neighbor(entity_event,
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host_name,
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NOVA_HOST_DATASOURCE,
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EdgeLabel.CONTAINS,
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is_entity_source=False)
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return [host_neighbor]
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def _create_entity_key(self, event):
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LOG.debug('Creating key for instance event: %s', event)
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instance_id = self._get_field_extractor(event).entity_id(event)
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key_fields = self._key_values(NOVA_INSTANCE_DATASOURCE, instance_id)
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key = tbase.build_key(key_fields)
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LOG.debug('Created key: %s', key)
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return key
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def get_vitrage_type(self):
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return NOVA_INSTANCE_DATASOURCE
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def _get_field_extractor(self, event):
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"""Return an object that extracts the field values from the event"""
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if tbase.is_update_event(event):
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return self.versioned_notifications_extractor if \
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CONF.use_nova_versioned_notifications is True else \
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self.legacy_notifications_extractor
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else:
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return self.snapshot_extractor
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