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###############################################################################
# Copyright (c) 2017 Koren Lev (Cisco Systems), Yaron Yogev (Cisco Systems) #
# and others #
# #
# All rights reserved. This program and the accompanying materials #
# are made available under the terms of the Apache License, Version 2.0 #
# which accompanies this distribution, and is available at #
# http://www.apache.org/licenses/LICENSE-2.0 #
###############################################################################
import re
from bson.objectid import ObjectId
from discover.clique_finder import CliqueFinder
from discover.events.event_base import EventBase, EventResult
class EventDeleteBase(EventBase):
def delete_handler(self, env, object_id, object_type) -> EventResult:
item = self.inv.get_by_id(env, object_id)
if not item:
self.log.info('{0} document is not found, aborting {0} delete'.format(object_type))
return EventResult(result=False, retry=False)
db_id = ObjectId(item['_id'])
id_path = item['id_path'] + '/'
# remove related clique
clique_finder = CliqueFinder()
self.inv.delete('cliques', {'focal_point': db_id})
# keep related links to do rebuild of cliques using them
matched_links_source = clique_finder.find_links_by_source(db_id)
matched_links_target = clique_finder.find_links_by_target(db_id)
links_using_object = []
links_using_object.extend([l['_id'] for l in matched_links_source])
links_using_object.extend([l['_id'] for l in matched_links_target])
# find cliques using these links
if links_using_object:
matched_cliques = clique_finder.find_cliques_by_link(links_using_object)
# find cliques using these links and rebuild them
for clique in matched_cliques:
clique_finder.rebuild_clique(clique)
# remove all related links
self.inv.delete('links', {'source': db_id})
self.inv.delete('links', {'target': db_id})
# remove object itself
self.inv.delete('inventory', {'_id': db_id})
# remove children
regexp = re.compile('^' + id_path)
self.inv.delete('inventory', {'id_path': {'$regex': regexp}})
return EventResult(result=True,
related_object=object_id,
display_context=object_id)
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