DVR: optimize check_ports_exist_on_l3_agent()
Currently the function gets all ports on the subnet and iterates through them to find dvr serviceable ports on a particular host. This patch makes it a single DB query to see if any port exists matching criterias. Partial-Bug: #1513678 Change-Id: Ie17885497aacb8fda4a2c4a05f19d08991038557 Co-Authored-By: Oleg Bondarev <obondarev@mirantis.com>
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@ -367,6 +367,18 @@ class exception_logger(object):
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return call
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def get_other_dvr_serviced_device_owners():
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"""Return device_owner names for ports that should be serviced by DVR
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This doesn't return DEVICE_OWNER_COMPUTE_PREFIX since it is a
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prefix, not a complete device_owner name, so should be handled
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separately (see is_dvr_serviced() below)
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"""
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return [n_const.DEVICE_OWNER_LOADBALANCER,
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n_const.DEVICE_OWNER_LOADBALANCERV2,
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n_const.DEVICE_OWNER_DHCP]
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def is_dvr_serviced(device_owner):
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"""Check if the port need to be serviced by DVR
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@ -375,11 +387,8 @@ def is_dvr_serviced(device_owner):
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if they are required for DVR or any service directly or
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indirectly associated with DVR.
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"""
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dvr_serviced_device_owners = (n_const.DEVICE_OWNER_LOADBALANCER,
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n_const.DEVICE_OWNER_LOADBALANCERV2,
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n_const.DEVICE_OWNER_DHCP)
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return (device_owner.startswith(n_const.DEVICE_OWNER_COMPUTE_PREFIX) or
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device_owner in dvr_serviced_device_owners)
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device_owner in get_other_dvr_serviced_device_owners())
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@debtcollector.removals.remove(message="This will removed in the N cycle.")
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@ -33,6 +33,7 @@ from neutron.db import agents_db
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from neutron.db import agentschedulers_db
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from neutron.db import l3_attrs_db
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from neutron.db import model_base
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from neutron.db import models_v2
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from neutron.extensions import l3agentscheduler
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from neutron.extensions import portbindings
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from neutron.extensions import router_availability_zone as router_az
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@ -455,21 +456,27 @@ class L3AgentSchedulerDbMixin(l3agentscheduler.L3AgentSchedulerPluginBase,
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if agentschedulers_db.AgentSchedulerDbMixin.is_eligible_agent(
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active, l3_agent)]
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def check_ports_exist_on_l3agent(
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self, context, l3_agent, subnet_ids):
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def check_ports_exist_on_l3agent(self, context, l3_agent, subnet_ids):
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"""
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This function checks for existence of dvr serviceable
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ports on the host, running the input l3agent.
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"""
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core_plugin = manager.NeutronManager.get_plugin()
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filter = {'fixed_ips': {'subnet_id': subnet_ids}}
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ports = core_plugin.get_ports(context, filters=filter)
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for port in ports:
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if (n_utils.is_dvr_serviced(port['device_owner']) and
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l3_agent['host'] == port[portbindings.HOST_ID]):
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return True
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# db query will return ports for all subnets if subnet_ids is empty,
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# so need to check first
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if not subnet_ids:
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return False
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return False
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core_plugin = manager.NeutronManager.get_plugin()
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filters = {'fixed_ips': {'subnet_id': subnet_ids},
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portbindings.HOST_ID: [l3_agent['host']]}
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ports_query = core_plugin._get_ports_query(context, filters=filters)
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owner_filter = or_(
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models_v2.Port.device_owner.startswith(
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constants.DEVICE_OWNER_COMPUTE_PREFIX),
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models_v2.Port.device_owner.in_(
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n_utils.get_other_dvr_serviced_device_owners()))
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ports_query = ports_query.filter(owner_filter)
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return ports_query.first() is not None
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def get_l3_agent_candidates(self, context, sync_router, l3_agents,
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ignore_admin_state=False):
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