/usr/lib/python2.7/dist-packages/neutron_lbaas/drivers/octavia/driver.py is in python-neutron-lbaas 1:9.1.0-2.
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#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from datetime import datetime
from functools import wraps
import threading
import time
from neutron import context as ncontext
from oslo_config import cfg
from oslo_log import log as logging
from oslo_serialization import jsonutils
from oslo_service import service
from oslo_utils import excutils
import requests
from neutron_lbaas._i18n import _
from neutron_lbaas.common import keystone
from neutron_lbaas.drivers import driver_base
from neutron_lbaas.drivers.octavia import octavia_messaging_consumer
from neutron_lbaas.services.loadbalancer import constants
LOG = logging.getLogger(__name__)
VERSION = "1.0.1"
OPTS = [
cfg.StrOpt(
'base_url',
default='http://127.0.0.1:9876',
help=_('URL of Octavia controller root'),
),
cfg.IntOpt(
'request_poll_interval',
default=3,
help=_('Interval in seconds to poll octavia when an entity is created,'
' updated, or deleted.')
),
cfg.IntOpt(
'request_poll_timeout',
default=100,
help=_('Time to stop polling octavia when a status of an entity does '
'not change.')
),
cfg.BoolOpt(
'allocates_vip',
default=False,
help=_('True if Octavia will be responsible for allocating the VIP.'
' False if neutron-lbaas will allocate it and pass to Octavia.')
)
]
cfg.CONF.register_opts(OPTS, 'octavia')
def thread_op(manager, entity, delete=False, lb_create=False):
context = ncontext.get_admin_context()
poll_interval = cfg.CONF.octavia.request_poll_interval
poll_timeout = cfg.CONF.octavia.request_poll_timeout
start_dt = datetime.now()
prov_status = None
while (datetime.now() - start_dt).seconds < poll_timeout:
octavia_lb = manager.driver.load_balancer.get(entity.root_loadbalancer)
prov_status = octavia_lb.get('provisioning_status')
LOG.debug("Octavia reports load balancer {0} has provisioning status "
"of {1}".format(entity.root_loadbalancer.id, prov_status))
if prov_status == 'ACTIVE' or prov_status == 'DELETED':
kwargs = {'delete': delete}
if manager.driver.allocates_vip and lb_create:
kwargs['lb_create'] = lb_create
# TODO(blogan): drop fk constraint on vip_port_id to ports
# table because the port can't be removed unless the load
# balancer has been deleted. Until then we won't populate the
# vip_port_id field.
# entity.vip_port_id = octavia_lb.get('vip').get('port_id')
entity.vip_address = octavia_lb.get('vip').get('ip_address')
manager.successful_completion(context, entity, **kwargs)
return
elif prov_status == 'ERROR':
manager.failed_completion(context, entity)
return
time.sleep(poll_interval)
LOG.debug("Timeout has expired for load balancer {0} to complete an "
"operation. The last reported status was "
"{1}".format(entity.root_loadbalancer.id, prov_status))
manager.failed_completion(context, entity)
# A decorator for wrapping driver operations, which will automatically
# set the neutron object's status based on whether it sees an exception
def async_op(func):
@wraps(func)
def func_wrapper(*args, **kwargs):
d = (func.__name__ == 'delete' or func.__name__ == 'delete_cascade')
lb_create = ((func.__name__ == 'create') and
isinstance(args[0], LoadBalancerManager))
try:
r = func(*args, **kwargs)
thread = threading.Thread(target=thread_op,
args=(args[0], args[2]),
kwargs={'delete': d,
'lb_create': lb_create})
thread.setDaemon(True)
thread.start()
return r
except Exception:
with excutils.save_and_reraise_exception():
args[0].failed_completion(args[1], args[2])
return func_wrapper
class OctaviaRequest(object):
def __init__(self, base_url, auth_session):
self.base_url = base_url
self.auth_session = auth_session
def request(self, method, url, args=None, headers=None):
if args:
if not headers:
token = self.auth_session.get_token()
headers = {
'Content-type': 'application/json',
'X-Auth-Token': token
}
args = jsonutils.dumps(args)
LOG.debug("url = %s", '%s%s' % (self.base_url, str(url)))
LOG.debug("args = %s", args)
r = requests.request(method,
'%s%s' % (self.base_url, str(url)),
data=args,
headers=headers)
LOG.debug("Octavia Response Code: {0}".format(r.status_code))
LOG.debug("Octavia Response Body: {0}".format(r.content))
LOG.debug("Octavia Response Headers: {0}".format(r.headers))
if method != 'DELETE':
return r.json()
def post(self, url, args):
return self.request('POST', url, args)
def put(self, url, args):
return self.request('PUT', url, args)
def delete(self, url):
self.request('DELETE', url)
def get(self, url):
return self.request('GET', url)
class OctaviaDriver(driver_base.LoadBalancerBaseDriver):
def __init__(self, plugin):
super(OctaviaDriver, self).__init__(plugin)
self.req = OctaviaRequest(cfg.CONF.octavia.base_url,
keystone.get_session())
self.load_balancer = LoadBalancerManager(self)
self.listener = ListenerManager(self)
self.pool = PoolManager(self)
self.member = MemberManager(self)
self.health_monitor = HealthMonitorManager(self)
self.l7policy = L7PolicyManager(self)
self.l7rule = L7RuleManager(self)
self.octavia_consumer = octavia_messaging_consumer.OctaviaConsumer(
self)
service.launch(cfg.CONF, self.octavia_consumer)
LOG.debug("OctaviaDriver: initialized, version=%s", VERSION)
@property
def allocates_vip(self):
return self.load_balancer.allocates_vip
class LoadBalancerManager(driver_base.BaseLoadBalancerManager):
@staticmethod
def _url(lb, id=None):
s = '/v1/loadbalancers'
if id:
s += '/%s' % id
return s
@property
def allows_create_graph(self):
return True
@property
def allows_healthmonitor_thresholds(self):
return True
@property
def allocates_vip(self):
return cfg.CONF.octavia.allocates_vip
@property
def deletes_cascade(self):
return True
def _construct_args(self, db_lb, create=True, graph=False):
args = {'name': db_lb.name,
'description': db_lb.description,
'enabled': db_lb.admin_state_up}
if not create:
return args
create_args = {'project_id': db_lb.tenant_id, 'id': db_lb.id,
'vip': {'subnet_id': db_lb.vip_subnet_id,
'ip_address': db_lb.vip_address,
'port_id': db_lb.vip_port_id}}
args.update(create_args)
if not graph:
return args
if db_lb.listeners:
args['listeners'] = []
for db_listener in db_lb.listeners:
listener_args = self.driver.listener._construct_args(db_listener,
graph=True)
args['listeners'].append(listener_args)
return args
def create_and_allocate_vip(self, context, lb):
self.create(context, lb)
@async_op
def create(self, context, lb):
graph = (lb.listeners and len(lb.listeners) > 0)
args = self._construct_args(lb, graph=graph)
self.driver.req.post(self._url(lb), args)
@async_op
def update(self, context, old_lb, lb):
args = self._construct_args(lb, create=False)
self.driver.req.put(self._url(lb, lb.id), args)
@async_op
def delete(self, context, lb):
self.driver.req.delete(self._url(lb, lb.id))
@async_op
def refresh(self, context, lb):
pass
def stats(self, context, lb):
return {} # todo
def get(self, lb):
return self.driver.req.get(self._url(lb, lb.id))
@async_op
def delete_cascade(self, context, lb):
self.driver.req.delete(self._url(lb, lb.id) + '/delete_cascade')
class ListenerManager(driver_base.BaseListenerManager):
@staticmethod
def _url(listener, id=None):
s = '/v1/loadbalancers/%s/listeners' % listener.loadbalancer.id
if id:
s += '/%s' % id
return s
def _construct_args(self, listener, create=True, graph=False):
sni_container_ids = [sni.tls_container_id
for sni in listener.sni_containers]
args = {
'name': listener.name,
'description': listener.description,
'enabled': listener.admin_state_up,
'protocol': listener.protocol,
'protocol_port': listener.protocol_port,
'connection_limit': listener.connection_limit,
'tls_certificate_id': listener.default_tls_container_id,
'default_pool_id': listener.default_pool_id,
'sni_containers': sni_container_ids
}
if not create:
return args
args['project_id'] = listener.tenant_id
args['id'] = listener.id
if not graph:
return args
del args['default_pool_id']
if listener.default_pool:
pool = listener.default_pool
args['default_pool'] = self.driver.pool._construct_args(pool,
graph=True)
if listener.l7_policies:
args['l7policies'] = []
l7_policies = listener.l7_policies
for l7_policy in l7_policies:
l7_policy_args = self.driver.l7policy._construct_args(
l7_policy, graph=True)
args['l7policies'].append(l7_policy_args)
return args
@async_op
def create(self, context, listener):
args = self._construct_args(listener)
self.driver.req.post(self._url(listener), args)
@async_op
def update(self, context, old_listener, listener):
args = self._construct_args(listener, create=False)
self.driver.req.put(self._url(listener, id=listener.id), args)
@async_op
def delete(self, context, listener):
self.driver.req.delete(self._url(listener, id=listener.id))
class PoolManager(driver_base.BasePoolManager):
@staticmethod
def _url(pool, id=None):
s = '/v1/loadbalancers/%s/pools' % (
pool.loadbalancer.id)
if id:
s += '/%s' % id
return s
def _construct_args(self, pool, create=True, graph=False):
args = {
'name': pool.name,
'description': pool.description,
'enabled': pool.admin_state_up,
'protocol': pool.protocol,
'lb_algorithm': pool.lb_algorithm
}
if pool.session_persistence:
args['session_persistence'] = {
'type': pool.session_persistence.type,
'cookie_name': pool.session_persistence.cookie_name,
}
else:
args['session_persistence'] = None
if not create:
return args
args['project_id'] = pool.tenant_id
args['id'] = pool.id
if pool.listeners:
args['listener_id'] = pool.listeners[0].id
if not graph:
return args
if pool.members:
args['members'] = []
for member in pool.members:
member_args = self.driver.member._construct_args(member)
args['members'].append(member_args)
if pool.healthmonitor:
hm_args = self.driver.health_monitor._construct_args(
pool.healthmonitor)
args['health_monitor'] = hm_args
return args
@async_op
def create(self, context, pool):
args = self._construct_args(pool)
self.driver.req.post(self._url(pool), args)
@async_op
def update(self, context, old_pool, pool):
args = self._construct_args(pool, create=False)
self.driver.req.put(self._url(pool, id=pool.id), args)
@async_op
def delete(self, context, pool):
self.driver.req.delete(self._url(pool, id=pool.id))
class MemberManager(driver_base.BaseMemberManager):
@staticmethod
def _url(member, id=None):
s = '/v1/loadbalancers/%s/pools/%s/members' % (
member.pool.loadbalancer.id,
member.pool.id)
if id:
s += '/%s' % id
return s
def _construct_args(self, member, create=True):
args = {
'enabled': member.admin_state_up,
'protocol_port': member.protocol_port,
'weight': member.weight
}
if not create:
return args
create_args = {
'id': member.id,
'ip_address': member.address,
'subnet_id': member.subnet_id,
'project_id': member.tenant_id
}
args.update(create_args)
return args
@async_op
def create(self, context, member):
args = self._construct_args(member)
self.driver.req.post(self._url(member), args)
@async_op
def update(self, context, old_member, member):
args = self._construct_args(member, create=False)
self.driver.req.put(self._url(member, member.id), args)
@async_op
def delete(self, context, member):
self.driver.req.delete(self._url(member, member.id))
class HealthMonitorManager(driver_base.BaseHealthMonitorManager):
@staticmethod
def _url(hm):
s = '/v1/loadbalancers/%s/pools/%s/healthmonitor' % (
hm.pool.loadbalancer.id,
hm.pool.id)
return s
def _construct_args(self, hm, create=True):
args = {
'type': hm.type,
'delay': hm.delay,
'timeout': hm.timeout,
'rise_threshold': hm.max_retries,
'fall_threshold': hm.max_retries_down,
'http_method': hm.http_method,
'url_path': hm.url_path,
'expected_codes': hm.expected_codes,
'enabled': hm.admin_state_up
}
if create:
args['project_id'] = hm.tenant_id
return args
@async_op
def create(self, context, hm):
args = self._construct_args(hm)
self.driver.req.post(self._url(hm), args)
@async_op
def update(self, context, old_hm, hm):
args = self._construct_args(hm, create=False)
self.driver.req.put(self._url(hm), args)
@async_op
def delete(self, context, hm):
self.driver.req.delete(self._url(hm))
class L7PolicyManager(driver_base.BaseL7PolicyManager):
@staticmethod
def _url(l7p, id=None):
s = '/v1/loadbalancers/%s/listeners/%s/l7policies' % (
l7p.listener.loadbalancer.id,
l7p.listener.id)
if id:
s += '/%s' % id
return s
def _construct_args(self, l7p, create=True, graph=False):
args = {
'name': l7p.name,
'description': l7p.description,
'action': l7p.action,
'redirect_url': l7p.redirect_url,
'position': l7p.position,
'enabled': l7p.admin_state_up
}
if args['action'] == constants.L7_POLICY_ACTION_REJECT:
del args['redirect_url']
elif args['action'] == constants.L7_POLICY_ACTION_REDIRECT_TO_POOL:
args['redirect_pool_id'] = l7p.redirect_pool_id
del args['redirect_url']
elif args['action'] == constants.L7_POLICY_ACTION_REDIRECT_TO_URL:
if args.get('redirect_pool_id'):
del args['redirect_pool_id']
if not create:
return args
args['id'] = l7p.id
if not graph:
return args
if (l7p.redirect_pool and l7p.action ==
constants.L7_POLICY_ACTION_REDIRECT_TO_POOL):
del args['redirect_pool_id']
pool_args = self.driver.pool._construct_args(l7p.redirect_pool,
graph=True)
args['redirect_pool'] = pool_args
if l7p.rules:
args['l7rules'] = []
for rule in l7p.rules:
rule_args = self.driver.l7rule._construct_args(rule)
args['l7rules'].append(rule_args)
return args
@async_op
def create(self, context, l7p):
args = self._construct_args(l7p)
self.driver.req.post(self._url(l7p), args)
@async_op
def update(self, context, old_l7p, l7p):
args = self._construct_args(l7p, create=False)
self.driver.req.put(self._url(l7p, id=l7p.id), args)
@async_op
def delete(self, context, l7p):
self.driver.req.delete(self._url(l7p, id=l7p.id))
class L7RuleManager(driver_base.BaseL7RuleManager):
@staticmethod
def _url(l7r, id=None):
s = '/v1/loadbalancers/%s/listeners/%s/l7policies/%s/l7rules' % (
l7r.policy.listener.loadbalancer.id,
l7r.policy.listener.id,
l7r.policy.id)
if id:
s += '/%s' % id
return s
@classmethod
def _construct_args(cls, l7r, create=True):
args = {
'type': l7r.type,
'compare_type': l7r.compare_type,
'key': l7r.key,
'value': l7r.value,
'invert': l7r.invert
}
if create:
args['id'] = l7r.id
return args
@async_op
def create(self, context, l7r):
args = self._construct_args(l7r)
self.driver.req.post(self._url(l7r), args)
@async_op
def update(self, context, old_l7r, l7r):
args = self._construct_args(l7r, create=False)
self.driver.req.put(self._url(l7r, id=l7r.id), args)
@async_op
def delete(self, context, l7r):
self.driver.req.delete(self._url(l7r, id=l7r.id))
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