def get_nsx_switch_ids(session, cluster, neutron_network_id):
"""Return the NSX switch id for a given neutron network.
First lookup for mappings in Neutron database. If no mapping is
found, query the NSX backend and add the mappings.
"""
nsx_switch_ids = nsx_db.get_nsx_switch_ids(
session, neutron_network_id)
if not nsx_switch_ids:
# Find logical switches from backend.
# This is a rather expensive query, but it won't be executed
# more than once for each network in Neutron's lifetime
nsx_switches = switchlib.get_lswitches(cluster, neutron_network_id)
if not nsx_switches:
LOG.warn(_("Unable to find NSX switches for Neutron network %s"),
neutron_network_id)
return
nsx_switch_ids = []
with session.begin(subtransactions=True):
for nsx_switch in nsx_switches:
nsx_switch_id = nsx_switch['uuid']
nsx_switch_ids.append(nsx_switch_id)
# Create DB mapping
nsx_db.add_neutron_nsx_network_mapping(
session,
neutron_network_id,
nsx_switch_id)
return nsx_switch_ids
def get_nsx_switch_ids(session, cluster, neutron_network_id):
"""Return the NSX switch id for a given neutron network.
First lookup for mappings in Neutron database. If no mapping is
found, query the NSX backend and add the mappings.
"""
nsx_switch_ids = nsx_db.get_nsx_switch_ids(
session, neutron_network_id)
if not nsx_switch_ids:
# Find logical switches from backend.
# This is a rather expensive query, but it won't be executed
# more than once for each network in Neutron's lifetime
nsx_switches = switchlib.get_lswitches(cluster, neutron_network_id)
if not nsx_switches:
LOG.warn(_LW("Unable to find NSX switches for Neutron network %s"),
neutron_network_id)
return
nsx_switch_ids = []
with session.begin(subtransactions=True):
for nsx_switch in nsx_switches:
nsx_switch_id = nsx_switch['uuid']
nsx_switch_ids.append(nsx_switch_id)
# Create DB mapping
nsx_db.add_neutron_nsx_network_mapping(
session,
neutron_network_id,
nsx_switch_id)
return nsx_switch_ids