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driver.py
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driver.py
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#
# Copyright (c) 2016 Juniper Networks, Inc. All rights reserved.
#
import uuid
import svc_monitor.services.loadbalancer.drivers.abstract_driver as abstract_driver
from vnc_api.vnc_api import InstanceIp
from vnc_api.vnc_api import FloatingIp
from vnc_api.vnc_api import PortMap, PortMappings
from vnc_api.vnc_api import ServiceHealthCheck, ServiceHealthCheckType
from vnc_api.vnc_api import NoIdError, RefsExistError
from svc_monitor.config_db import *
class OpencontrailLoadbalancerDriver(
abstract_driver.ContrailLoadBalancerAbstractDriver):
def __init__(self, name, manager, api, db, args=None):
self._name = name
self._api = api
self._svc_manager = manager
self.db = db
def _get_floating_ip(self, iip_id=None, fip_id=None):
fip = None
try:
if iip_id:
iip = self._api.instance_ip_read(id=iip_id)
fip_id = iip.get_floating_ips()[0]['uuid']
fip = self._api.floating_ip_read(id=fip_id)
except NoIdError:
fip = None
return fip
def _add_vmi_ref(self, vmi, iip_id=None, fip_id=None):
fip = self._get_floating_ip(iip_id, fip_id)
if fip:
fip.add_virtual_machine_interface(vmi)
self._api.floating_ip_update(fip)
return fip
def _delete_vmi_ref(self, vmi, iip_id=None, fip_id=None):
fip = self._get_floating_ip(iip_id, fip_id)
if fip:
fip.del_virtual_machine_interface(vmi)
self._api.floating_ip_update(fip)
return fip
def _add_port_map(self, fip, protocol, src_port, dst_port):
portmap_entry = False
portmappings = fip.get_floating_ip_port_mappings()
portmap_list = []
if portmappings:
portmap_list = portmappings.get_port_mappings()
if portmappings is None:
portmappings = PortMappings()
portmap_list = portmappings.get_port_mappings()
for portmap in portmap_list or []:
if portmap.src_port == src_port:
portmap_entry = True
break
if portmap_entry == False:
portmap = PortMap()
portmap.set_protocol(protocol)
portmap.set_src_port(src_port)
portmap.set_dst_port(dst_port)
portmappings.add_port_mappings(portmap)
fip.set_floating_ip_port_mappings(portmappings)
fip.floating_ip_port_mappings_enable = True
self._api.floating_ip_update(fip)
def _delete_port_map(self, fip, src_port):
portmappings = fip.get_floating_ip_port_mappings()
portmap_list = portmappings.get_port_mappings()
for portmap in portmap_list or []:
if portmap.src_port == src_port:
portmappings.delete_port_mappings(portmap)
fip.set_floating_ip_port_mappings(portmappings)
if len(portmap_list) == 0:
fip.floating_ip_port_mappings_enable = False
self._api.floating_ip_update(fip)
return portmap
def _add_service_health_check_ref(self, service_health_check, vmi_id):
vmi = self._api.virtual_machine_interface_read(id=vmi_id)
if vmi:
vmi.add_service_health_check(service_health_check)
self._api.virtual_machine_interface_update(vmi)
return vmi
def _delete_service_health_check_ref(self, service_health_check, vmi_id):
vmi = self._api.virtual_machine_interface_read(id=vmi_id)
if vmi:
vmi.del_service_health_check(service_health_check)
self._api.virtual_machine_interface_update(vmi)
return vmi
def set_config_v2(self, lb_id):
lb = LoadbalancerSM.get(lb_id)
if not lb:
return
conf = {}
vmi_conf = {}
instance_ips = []
floating_ips = []
vmi = VirtualMachineInterfaceSM.get(lb.virtual_machine_interface)
if vmi is None:
return conf
for iip_id in vmi.instance_ips or []:
instance_ips.append(iip_id)
for fip_id in vmi.floating_ips or []:
floating_ips.append(fip_id)
vmi_conf['instance_ips'] = instance_ips
vmi_conf['floating_ips'] = floating_ips
conf['vmi'] = vmi_conf
return conf
def _update_pool_member_props(self, lb, lb_props):
if lb is None:
return
for ll_id in lb.loadbalancer_listeners:
listener = LoadbalancerListenerSM.get(ll_id)
if not listener:
continue
if listener.params['protocol'] == 'UDP':
protocol = 'UDP'
else:
protocol = 'TCP'
src_port = listener.params['protocol_port']
pool = LoadbalancerPoolSM.get(listener.loadbalancer_pool)
if pool:
for member_id in pool.members:
member = LoadbalancerMemberSM.get(member_id)
if not member:
continue
dst_port = member.params['protocol_port']
try:
vmi = self._api.virtual_machine_interface_read(id=member.vmi)
except NoIdError:
continue
for iip_id in lb_props['old_instance_ips'] or []:
fip = self._delete_vmi_ref(vmi, iip_id=iip_id)
self._delete_port_map(fip, src_port)
for iip_id in lb_props['new_instance_ips'] or []:
fip = self._add_vmi_ref(vmi, iip_id=iip_id)
self._add_port_map(fip, protocol, src_port, dst_port)
if iip_id not in pool.lb_instance_ips:
pool.lb_instance_ips.append(iip_id)
pool.lb_fips.append(fip)
for fip_id in lb_props['old_floating_ips'] or []:
fip = self._delete_vmi_ref(vmi, fip_id=fip_id)
self._delete_port_map(fip, src_port)
for fip_id in lb_props['new_floating_ips'] or []:
fip = self._add_vmi_ref(vmi, fip_id=fip_id)
self._add_port_map(fip, protocol, src_port, dst_port)
if fip_id not in pool.lb_floating_ips:
pool.lb_floating_ips.append(fip_id)
pool.lb_fips.append(fip)
def _update_loadbalancer_props(self, lb_id):
lb = LoadbalancerSM.get(lb_id)
if lb is None:
msg = ('Unable to retrieve loadbalancer %s' % lb_id)
self._svc_manager.logger.error(msg)
return
driver_data = self.db.loadbalancer_driver_info_get(lb_id)
if driver_data:
if 'lb_instance_ips' in driver_data:
lb.instance_ips = driver_data['lb_instance_ips']
if 'lb_floating_ips' in driver_data:
lb.floating_ips = driver_data['lb_floating_ips']
vmi = VirtualMachineInterfaceSM.get(lb.virtual_machine_interface)
if vmi is None:
return
if set(lb.instance_ips) == vmi.instance_ips and \
set(lb.floating_ips) == vmi.floating_ips:
return
old_instance_ips = []
new_instance_ips = []
instance_ips_changed = False
if set(lb.instance_ips) != vmi.instance_ips:
instance_ips_changed = True
for iip_id in lb.instance_ips or []:
if iip_id not in vmi.instance_ips:
old_instance_ips.append(iip_id)
for iip_id in vmi.instance_ips or []:
if iip_id not in lb.instance_ips:
new_instance_ips.append(iip_id)
if len(new_instance_ips):
for iip_id in new_instance_ips:
iip = self._api.instance_ip_read(id=iip_id)
fq_name = str(uuid.uuid4())
fip = FloatingIp(name=fq_name, parent_obj=iip,
floating_ip_address=iip.instance_ip_address)
fip.uuid = fq_name
self._api.floating_ip_create(fip)
old_floating_ips = []
new_floating_ips = []
floating_ips_changed = False
if set(lb.floating_ips) != vmi.floating_ips:
floating_ips_changed = True
for fip_id in lb.floating_ips or []:
if fip_id not in vmi.floating_ips:
old_floating_ips.append(fip_id)
for fip_id in vmi.floating_ips or []:
if fip_id not in lb.floating_ips:
new_floating_ips.append(fip_id)
lb_props = {}
lb_props['old_instance_ips'] = old_instance_ips
lb_props['new_instance_ips'] = new_instance_ips
lb_props['old_floating_ips'] = old_floating_ips
lb_props['new_floating_ips'] = new_floating_ips
self._update_pool_member_props(lb, lb_props)
for iip_id in lb_props['old_instance_ips'] or []:
fip = self._get_floating_ip(vmi, iip_id=iip_id)
if fip:
self._api.floating_ip_delete(id=fip.uuid)
if instance_ips_changed == True:
lb.instance_ips = new_instance_ips
if floating_ips_changed == True:
lb.floating_ips = new_floating_ips
driver_data = {}
driver_data['vmi'] = vmi.uuid
driver_data['lb_instance_ips'] = lb.instance_ips
driver_data['lb_floating_ips'] = lb.floating_ips
self.db.loadbalancer_driver_info_insert(lb_id, driver_data)
def _clear_loadbalancer_props(self, lb_id):
driver_data = self.db.loadbalancer_driver_info_get(lb_id)
if driver_data is None:
return
lb = LoadbalancerSM.get(lb_id)
if lb is None:
return
lb.instance_ips = driver_data['lb_instance_ips']
for iip_id in lb.instance_ips or []:
fip = self._get_floating_ip(iip_id=iip_id)
if fip:
fip.set_virtual_machine_interface_list([])
self._api.floating_ip_update(fip)
self._api.floating_ip_delete(id=fip.uuid)
vmi = self._api.virtual_machine_interface_read(id=driver_data['vmi'])
lb.floating_ips = driver_data['lb_floating_ips']
for fip_id in lb.floating_ips or []:
fip = self._get_floating_ip(fip_id=fip_id)
if fip:
fip.set_virtual_machine_interface_list([])
fip.set_floating_ip_port_mappings([])
fip.floating_ip_port_mappings_enable = False
self._api.floating_ip_update(fip)
fip = self._add_vmi_ref(vmi, fip_id=fip_id)
del lb.instance_ips[:]
del lb.floating_ips[:]
self.db.loadbalancer_remove(lb_id, ['vmi'])
self.db.loadbalancer_remove(lb_id, ['lb_instance_ips'])
self.db.loadbalancer_remove(lb_id, ['lb_floating_ips'])
def _update_listener_props(self, old_listener, listener):
lb_id = listener['loadbalancer_id']
driver_data = self.db.loadbalancer_driver_info_get(lb_id)
if driver_data is None:
return
lb_instance_ips = []
lb_floating_ips = []
if 'lb_instance_ips' in driver_data:
lb_instance_ips = driver_data['lb_instance_ips']
if 'lb_floating_ips' in driver_data:
lb_floating_ips = driver_data['lb_floating_ips']
if not old_listener:
return
if old_listener.props['protocol_port'] == listener.props['protocol_port'] and \
old_listener.props['protocol'] == listener.props['protocol']:
return
if listener.params['protocol'] == 'UDP':
protocol = 'UDP'
else:
protocol = 'TCP'
for iip_id in lb_instance_ips or []:
fip = self._get_floating_ip(iip_id=iip_id)
if fip:
src_port = old_listener.props['protocol_port']
portmap = self._delete_port_map(fip, src_port)
src_port = listener['protocol_port']
dst_port = portmap.dst_port
self._add_port_map(fip, protocol, src_port, dst_port)
for fip_id in lb_floating_ips or []:
fip = self._get_floating_ip(fip_id=fip_id)
if fip:
src_port = old_listener.props['protocol_port']
portmap = self._delete_port_map(fip, src_port)
src_port = listener['protocol_port']
dst_port = portmap.dst_port
self._add_port_map(fip, protocol, src_port, dst_port)
def _clear_listener_props(self, listener_id):
listener = LoadbalancerListenerSM.get(listener_id)
if listener is None:
return
lb_id = listener['loadbalancer_id']
driver_data = self.db.loadbalancer_driver_info_get(lb_id)
if driver_data is None:
return
lb_instance_ips = []
lb_floating_ips = []
if 'lb_instance_ips' in driver_data:
lb_instance_ips = driver_data['lb_instance_ips']
if 'lb_floating_ips' in driver_data:
lb_floating_ips = driver_data['lb_floating_ips']
for iip_id in lb_instance_ips or []:
fip = self._get_floating_ip(iip_id=iip_id)
self._delete_port_map(fip, listener['protocol_port'])
for iip_id in lb_floating_ips or []:
fip = self._get_floating_ip(iip_id=iip_id)
self._delete_port_map(fip, listener['protocol_port'])
def _update_pool_props(self, pool_id):
pool = LoadbalancerPoolSM.get(pool_id)
if pool is None:
return
lb_id = pool.loadbalancer_id
driver_data = self.db.loadbalancer_driver_info_get(lb_id)
if driver_data is None:
return
lb_instance_ips = []
lb_floating_ips = []
if 'lb_instance_ips' in driver_data:
lb_instance_ips = driver_data['lb_instance_ips']
if 'lb_floating_ips' in driver_data:
lb_floating_ips = driver_data['lb_floating_ips']
if lb_instance_ips == pool.lb_instance_ips and \
lb_floating_ips == pool.lb_floating_ips:
return
pool.lb_fips = []
pool.lb_instance_ips = []
pool.lb_floating_ips = []
for iip_id in lb_instance_ips or []:
fip = self._get_floating_ip(iip_id=iip_id)
pool.lb_instance_ips.append(iip_id)
pool.lb_fips.append(fip)
for fip_id in lb_floating_ips or []:
fip = self._get_floating_ip(fip_id=fip_id)
pool.lb_floating_ips.append(fip_id)
pool.lb_fips.append(fip)
def _clear_pool_props(self, pool_id):
pool = LoadbalancerPoolSM.get(pool_id)
if pool is None:
return
pool.lb_fips = []
def _update_member_props(self, member_id):
member = LoadbalancerMemberSM.get(member_id)
if member is None or member.vmi is None:
return
pool = LoadbalancerPoolSM.get(member.loadbalancer_pool)
if pool is None:
return
try:
vmi = self._api.virtual_machine_interface_read(id=member.vmi)
except NoIdError:
return
protocol = pool.listener_protocol
src_port = pool.listener_port
dst_port = member.params['protocol_port']
for fip in pool.lb_fips or []:
fip.add_virtual_machine_interface(vmi)
self._api.floating_ip_update(fip)
self._add_port_map(fip, protocol, src_port, dst_port)
if pool.service_health_check:
self._add_service_health_check_ref(pool.service_health_check, member.vmi)
member.service_health_check = service_health_check
def _clear_member_props(self, member_id):
member = LoadbalancerMemberSM.get(member_id)
if member is None:
return
pool = LoadbalancerPoolSM.get(member.loadbalancer_pool)
if pool is None:
return
try:
vmi = self._api.virtual_machine_interface_read(id=member.vmi)
except NoIdError:
return
port_map_delete = False
if len(pool.members) == 1 and list(pool.members)[0] == member_id:
port_map_delete = True
for fip in pool.lb_fips or []:
fip.del_virtual_machine_interface(vmi)
self._api.floating_ip_update(fip)
if port_map_delete == False:
continue
self._delete_port_map(fip, pool.listener_port)
if member.service_health_check:
self._delete_service_health_check_ref(member.service_health_check, member.vmi)
def _update_health_monitor_props(self, hm_id, pool_id):
_service_health_check_type_mapping = {
'delay': 'delay',
'timeout': 'timeout',
'max_retries': 'max_retries',
'http_method': 'http_method',
'url_path': 'url_path',
'expected_codes': 'expected_codes',
'monitor_type': 'monitor_type',
}
pool = LoadbalancerPoolSM.get(pool_id)
if pool is None:
return
hm = HealthMonitorSM.get(hm_id)
if hm is None:
return
props = ServiceHealthCheckType()
setattr(props, 'health_check_type', 'link-local')
for key, mapping in _service_health_check_type_mapping.iteritems():
if mapping in hm.params:
setattr(props, key, hm.params[mapping])
if hm.params['monitor_type'] == 'PING' or \
hm.params['monitor_type'] == 'TCP':
setattr(props, 'monitor_type', 'PING')
setattr(props, 'url_path', 'local-ip')
elif hm.params['monitor_type'] == 'HTTP' or \
hm.params['monitor_type'] == 'HTTPS':
setattr(props, 'monitor_type', 'HTTP')
props.enabled = True
try:
if hm.service_health_check_id:
id = hm.service_health_check_id
service_health_check = self._api.service_health_check_read(id=id)
service_health_check.set_service_health_check_properties(props)
self._api.service_health_check_update(service_health_check)
else:
shc_uuid = str(uuid.uuid4())
fq_name = pool.name + '-' + shc_uuid
tenant_id = str(uuid.UUID(hm.parent_uuid.replace('-', '')))
project = self._api.project_read(id=tenant_id)
service_health_check = ServiceHealthCheck(
name=fq_name,
parent_obj=project,
service_health_check_properties=props)
service_health_check.uuid = shc_uuid
self._api.service_health_check_create(service_health_check)
for member_id in pool.members:
member = LoadbalancerMemberSM.get(member_id)
if member is None:
continue
self._add_service_health_check_ref(service_health_check, member.vmi)
pool.service_health_check = service_health_check
for member_id in pool.members:
member = LoadbalancerMemberSM.get(member_id)
if member:
member.service_health_check = service_health_check
hm.service_health_check_id = service_health_check.uuid
hm.provider = pool.provider
driver_data = {}
driver_data['provider'] = hm.provider
driver_data['service_health_check_id'] = hm.service_health_check_id
driver_data['pool_id'] = pool_id
self.db.health_monitor_driver_info_insert(hm_id, driver_data)
except NoIdError:
return
def _clear_health_monitor_props(self, hm_id, pool_id):
driver_data = self.db.health_monitor_driver_info_get(hm_id)
if driver_data is None:
return
try:
id = driver_data['service_health_check_id']
service_health_check = self._api.service_health_check_read(id=id)
vmi_back_refs = service_health_check.get_virtual_machine_interface_back_refs()
for vmi in vmi_back_refs or []:
self._api.ref_update('virtual-machine-interface', vmi['uuid'], \
'service-health-check', service_health_check.uuid, None, 'DELETE')
self._api.service_health_check_update(service_health_check)
self._api.service_health_check_delete(id=service_health_check.uuid)
if driver_data['pool_id']:
pool = LoadbalancerPoolSM.get(driver_data['pool_id'])
if pool is None:
return
pool.service_health_check = None
for member_id in pool.members:
member = LoadbalancerMemberSM.get(member_id)
if member is None:
continue
member.service_health_check = None
except NoIdError:
return
def create_loadbalancer(self, loadbalancer):
self._update_loadbalancer_props(loadbalancer['id'])
def update_loadbalancer(self, old_loadbalancer, loadbalancer):
self._update_loadbalancer_props(loadbalancer['id'])
def suspend_loadbalancer(self, loadbalancer):
self._clear_loadbalancer_props(loadbalancer['id'])
def delete_loadbalancer(self, loadbalancer):
self._clear_loadbalancer_props(loadbalancer['id'])
def create_listener(self, listener):
self._update_listener_props(None, listener)
def update_listener(self, old_listener, listener):
self._update_listener_props(old_listener, listener)
def delete_listener(self, listener):
self._clear_listener_props(listener['id'])
def create_pool(self, pool):
self._update_pool_props(pool['id'])
def update_pool(self, old_pool, pool):
self._update_pool_props(pool['id'])
def delete_pool(self, pool):
self._clear_pool_props(pool['id'])
def create_member(self, member):
self._update_member_props(member['id'])
def update_member(self, old_member, member):
self._update_member_props(member['id'])
def delete_member(self, member):
self._clear_member_props(member['id'])
def create_health_monitor(self,
health_monitor,
pool_id):
self._update_health_monitor_props(health_monitor['id'], pool_id)
def update_health_monitor(self,
old_health_monitor,
health_monitor,
pool_id):
self._update_health_monitor_props(health_monitor['id'], pool_id)
def delete_health_monitor(self, health_monitor, pool_id):
self._clear_health_monitor_props(health_monitor['id'], pool_id)
def stats(self, pool_id):
pass
def create_vip(self, vip):
pass
def update_vip(self, old_vip, vip):
pass
def delete_vip(self, vip):
pass