176 lines
6.5 KiB
Python
176 lines
6.5 KiB
Python
# Copyright 2016 - Nokia
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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_log import log as logging
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from vitrage.common.constants import EdgeLabel
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from vitrage.common.constants import EdgeProperties as EProps
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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.common.exception import VitrageTransformerError
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from vitrage.datasources import transformer_base
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from vitrage.datasources.transformer_base import Neighbor
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from vitrage.evaluator.actions.recipes.action_steps import ADD_EDGE
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from vitrage.evaluator.actions.recipes.action_steps import ADD_VERTEX
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from vitrage.evaluator.actions.recipes.action_steps import REMOVE_EDGE
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from vitrage.evaluator.actions.recipes.action_steps import REMOVE_VERTEX
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from vitrage.evaluator.actions.recipes.action_steps import UPDATE_VERTEX
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from vitrage.evaluator.actions.recipes.base import EVALUATOR_EVENT_TYPE
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from vitrage.evaluator.template_fields import TemplateFields as TFields
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import vitrage.graph.utils as graph_utils
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from vitrage.graph import Vertex
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LOG = logging.getLogger(__name__)
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VITRAGE_TYPE = 'vitrage'
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class EvaluatorEventTransformer(transformer_base.TransformerBase):
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def __init__(self, transformers, conf):
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super(EvaluatorEventTransformer, self).__init__(transformers, conf)
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self.actions = self._init_actions()
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def _create_snapshot_entity_vertex(self, entity_event):
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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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return self._create_vertex(entity_event)
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def _create_vertex(self, event):
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event_type = event[EVALUATOR_EVENT_TYPE]
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update_timestamp = transformer_base.convert_timestamp_format(
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'%Y-%m-%d %H:%M:%S.%f',
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event[VProps.UPDATE_TIMESTAMP]
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)
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if event_type == UPDATE_VERTEX:
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properties = {
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VProps.UPDATE_TIMESTAMP: update_timestamp,
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VProps.SAMPLE_TIMESTAMP: event[VProps.SAMPLE_TIMESTAMP],
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VProps.IS_PLACEHOLDER: False,
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VProps.RESOURCE_ID: event.get(TFields.TARGET)
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}
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if VProps.IS_REAL_VITRAGE_ID in event:
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properties[VProps.IS_REAL_VITRAGE_ID] = \
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event.get(VProps.IS_REAL_VITRAGE_ID)
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if VProps.VITRAGE_STATE in event:
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properties[VProps.VITRAGE_STATE] = \
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event.get(VProps.VITRAGE_STATE)
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if VProps.IS_MARKED_DOWN in event:
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properties[VProps.IS_MARKED_DOWN] = \
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event.get(VProps.IS_MARKED_DOWN)
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return Vertex(event[VProps.VITRAGE_ID], properties)
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if event_type in [ADD_VERTEX, REMOVE_VERTEX]:
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metadata = {
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VProps.NAME: event[TFields.ALARM_NAME],
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VProps.SEVERITY: event[TFields.SEVERITY],
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VProps.STATE: event[VProps.STATE],
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VProps.RESOURCE_ID: event.get(TFields.TARGET)
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}
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return graph_utils.create_vertex(
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self._create_entity_key(event),
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entity_category=EntityCategory.ALARM,
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entity_type=VITRAGE_TYPE,
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sample_timestamp=event[VProps.SAMPLE_TIMESTAMP],
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update_timestamp=update_timestamp,
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metadata=metadata)
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return None
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def _create_snapshot_neighbors(self, event):
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return self._create_vitrage_neighbors(event)
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def _create_update_neighbors(self, event):
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return self._create_vitrage_neighbors(event)
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def _create_vitrage_neighbors(self, event):
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event_type = event[EVALUATOR_EVENT_TYPE]
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timestamp = transformer_base.convert_timestamp_format(
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'%Y-%m-%d %H:%M:%S.%f',
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event[VProps.UPDATE_TIMESTAMP]
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)
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if event_type in [ADD_EDGE, REMOVE_EDGE]:
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relation_edge = graph_utils.create_edge(
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source_id=event[TFields.SOURCE],
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target_id=event[TFields.TARGET],
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relationship_type=event[EProps.RELATIONSHIP_TYPE],
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update_timestamp=timestamp)
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return [Neighbor(None, relation_edge)]
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if event_type == ADD_VERTEX:
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relation_edge = graph_utils.create_edge(
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source_id=self._create_entity_key(event),
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target_id=event[TFields.TARGET],
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relationship_type=EdgeLabel.ON,
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update_timestamp=timestamp)
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neighbor_props = {
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VProps.IS_PLACEHOLDER: True,
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VProps.UPDATE_TIMESTAMP: timestamp,
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VProps.SAMPLE_TIMESTAMP: event[VProps.SAMPLE_TIMESTAMP],
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VProps.IS_REAL_VITRAGE_ID: True,
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VProps.TYPE: event[VProps.VITRAGE_RESOURCE_TYPE],
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VProps.CATEGORY: EntityCategory.RESOURCE,
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}
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neighbor = Vertex(event[TFields.TARGET], neighbor_props)
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return [Neighbor(neighbor, relation_edge)]
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return []
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def _extract_graph_action(self, event):
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event_type = event[EVALUATOR_EVENT_TYPE]
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try:
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return self.actions[event_type]
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except Exception:
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raise VitrageTransformerError(
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'Invalid Evaluator event type: (%s)' % event_type)
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@staticmethod
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def _init_actions():
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return {
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UPDATE_VERTEX: GraphAction.UPDATE_ENTITY,
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ADD_VERTEX: GraphAction.CREATE_ENTITY,
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REMOVE_VERTEX: GraphAction.DELETE_ENTITY,
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ADD_EDGE: GraphAction.UPDATE_RELATIONSHIP,
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REMOVE_EDGE: GraphAction.DELETE_RELATIONSHIP
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}
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def _create_entity_key(self, event):
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key_fields = self._key_values(event[TFields.ALARM_NAME],
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event[TFields.TARGET])
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return transformer_base.build_key(key_fields)
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def _key_values(self, *args):
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return (EntityCategory.ALARM, VITRAGE_TYPE) + args
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def create_neighbor_placeholder_vertex(self, **kwargs):
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LOG.info('Evaluator does not create placeholders')
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def get_type(self):
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return VITRAGE_TYPE
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