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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 #
###############################################################################
from discover.events.event_base import EventBase, EventResult
from discover.events.event_port_add import EventPortAdd
from discover.events.event_port_delete import EventPortDelete
from discover.events.event_subnet_add import EventSubnetAdd
from discover.fetchers.api.api_access import ApiAccess
from discover.fetchers.api.api_fetch_regions import ApiFetchRegions
from discover.fetchers.db.db_fetch_port import DbFetchPort
from discover.find_links_for_vservice_vnics import FindLinksForVserviceVnics
from discover.scanner import Scanner
class EventSubnetUpdate(EventBase):
def handle(self, env, notification):
# check for network document.
subnet = notification['payload']['subnet']
project = notification['_context_project_name']
host_id = notification['publisher_id'].replace('network.', '', 1)
subnet_id = subnet['id']
network_id = subnet['network_id']
network_document = self.inv.get_by_id(env, network_id)
if not network_document:
self.log.info('network document does not exist, aborting subnet update')
return EventResult(result=False, retry=True)
# update network document.
subnets = network_document['subnets']
key = next(filter(lambda k: subnets[k]['id'] == subnet_id, subnets),
None)
if key:
if subnet['enable_dhcp'] and subnets[key]['enable_dhcp'] is False:
# scan DHCP namespace to add related document.
# add dhcp vservice document.
host = self.inv.get_by_id(env, host_id)
port_handler = EventPortAdd()
port_handler.add_dhcp_document(env, host, network_id,
network_document['name'])
# make sure that self.regions is not empty.
if len(ApiAccess.regions) == 0:
fetcher = ApiFetchRegions()
fetcher.set_env(env)
fetcher.get(None)
self.log.info("add port binding to DHCP server.")
port_id = DbFetchPort(). \
get_id_by_field(network_id,
"""device_owner LIKE "%dhcp" """)
port = EventSubnetAdd(). \
add_port_document(env, port_id,
network_name=network_document['name'],
project_name=project)
if port:
port_handler. \
add_vnic_document(env, host, network_id,
network_name=network_document['name'],
mac_address=port['mac_address'])
# add link for vservice - vnic
FindLinksForVserviceVnics().add_links(search={"id": "qdhcp-%s" % network_id})
scanner = Scanner()
scanner.set_env(env)
scanner.scan_cliques()
FindLinksForVserviceVnics(). \
add_links(search={"id": "qdhcp-%s" % network_id})
scanner = Scanner()
scanner.set_env(env)
scanner.scan_cliques()
if subnet['enable_dhcp'] is False and subnets[key]['enable_dhcp']:
# delete existed related DHCP documents.
self.inv.delete("inventory",
{'id': "qdhcp-%s" % subnet['network_id']})
self.log.info("delete DHCP document: qdhcp-%s" %
subnet['network_id'])
port = self.inv.find_items({'network_id': subnet['network_id'],
'device_owner': 'network:dhcp'},
get_single=True)
if 'id' in port:
EventPortDelete().delete_port(env, port['id'])
self.log.info("delete port binding to DHCP server.")
if subnet['name'] == subnets[key]['name']:
subnets[key] = subnet
else:
# TODO: #AskCheng shouldn't we remove the old one?
subnets[subnet['name']] = subnet
self.inv.set(network_document)
return EventResult(result=True,
related_object=subnet['id'],
display_context=network_id)
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