111 lines
4.5 KiB
Python
111 lines
4.5 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 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 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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class InstanceTransformer(ResourceTransformerBase):
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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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}
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def __init__(self, transformers, conf):
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super(InstanceTransformer, self).__init__(transformers, conf)
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def _create_snapshot_entity_vertex(self, entity_event):
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name = extract_field_value(entity_event, 'name')
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entity_id = extract_field_value(entity_event, 'id')
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state = extract_field_value(entity_event, 'status')
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host = extract_field_value(entity_event, 'OS-EXT-SRV-ATTR:host')
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return self._create_vertex(entity_event, name, entity_id, state, host)
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def _create_update_entity_vertex(self, entity_event):
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name = extract_field_value(entity_event, 'hostname')
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entity_id = extract_field_value(entity_event, 'instance_id')
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state = extract_field_value(entity_event, 'state')
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host = extract_field_value(entity_event, 'host')
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return self._create_vertex(entity_event, name, entity_id, state, host)
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def _create_vertex(self, entity_event, name, entity_id, state, host):
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metadata = {
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VProps.NAME: name,
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VProps.PROJECT_ID: entity_event.get('tenant_id', None),
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'host_id': host
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}
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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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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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entity_id=entity_id,
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entity_category=EntityCategory.RESOURCE,
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entity_type=NOVA_INSTANCE_DATASOURCE,
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entity_state=state,
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sample_timestamp=sample_timestamp,
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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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'OS-EXT-SRV-ATTR:host')
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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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'host')
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def _create_instance_neighbors(self, entity_event, host_property_name):
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host_name = entity_event.get(host_property_name)
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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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instance_id = 'instance_id' if tbase.is_update_event(event) else 'id'
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key_fields = self._key_values(NOVA_INSTANCE_DATASOURCE,
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extract_field_value(event,
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instance_id))
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return tbase.build_key(key_fields)
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def get_type(self):
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return NOVA_INSTANCE_DATASOURCE
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