Moving base driver code to a new location
Moving base lbaas v2 driver modules to their new location - drivers/ instead of the old one - services/loadbalancer/drivers/ This change set is a preparation for next-coming new lbaas v2 drivers implementations Change-Id: I9a629fbed69ae8149feb1a761d83114779717fc1
This commit is contained in:
Evgeny Fedoruk
parent
3e7e1a841e
commit
f733feaf57
|
|
@ -49,7 +49,7 @@ service_provider=LOADBALANCER:Haproxy:neutron_lbaas.services.loadbalancer.driver
|
|||
# service_provider=LOADBALANCER:NetScaler:neutron_lbaas.services.loadbalancer.drivers.netscaler.netscaler_driver.NetScalerPluginDriver
|
||||
# service_provider=LOADBALANCER:Embrane:neutron_lbaas.services.loadbalancer.drivers.embrane.driver.EmbraneLbaas:default
|
||||
# service_provider = LOADBALANCER:A10Networks:neutron_lbaas.services.loadbalancer.drivers.a10networks.driver_v1.ThunderDriver:default
|
||||
# service_provider = LOADBALANCERV2:LoggingNoop:neutron_lbaas.services.loadbalancer.drivers.logging_noop.driver.LoggingNoopLoadBalancerDriver:default
|
||||
# service_provider = LOADBALANCERV2:LoggingNoop:neutron_lbaas.drivers.logging_noop.driver.LoggingNoopLoadBalancerDriver:default
|
||||
|
||||
[certificates]
|
||||
# cert_manager_class = neutron_lbaas.common.cert_manager.local_cert_manager
|
||||
|
|
|
|||
|
|
@ -13,7 +13,7 @@
|
|||
# under the License.
|
||||
|
||||
from neutron_lbaas.db.loadbalancer import models
|
||||
from neutron_lbaas.services.loadbalancer.drivers import driver_mixins
|
||||
from neutron_lbaas.drivers import driver_mixins
|
||||
|
||||
|
||||
class NotImplementedManager(object):
|
||||
|
|
@ -0,0 +1,665 @@
|
|||
# Copyright 2014-2015 Rackspace
|
||||
#
|
||||
# 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.
|
||||
|
||||
import os
|
||||
import shutil
|
||||
import socket
|
||||
import uuid
|
||||
|
||||
import netaddr
|
||||
from neutron.agent.common import config
|
||||
from neutron.agent.linux import interface
|
||||
from neutron.agent.linux import ip_lib
|
||||
from neutron.common import exceptions
|
||||
from neutron.common import log
|
||||
from neutron import context as ncontext
|
||||
from neutron.extensions import portbindings
|
||||
from neutron.i18n import _LE, _LW
|
||||
from neutron.openstack.common import log as logging
|
||||
from neutron.openstack.common import service
|
||||
from neutron.plugins.common import constants
|
||||
from oslo_config import cfg
|
||||
from oslo_utils import excutils
|
||||
from oslo_utils import importutils
|
||||
|
||||
from neutron_lbaas.drivers import driver_base
|
||||
from neutron_lbaas.extensions import loadbalancerv2
|
||||
from neutron_lbaas.services.loadbalancer.agent import agent as lb_agent
|
||||
from neutron_lbaas.services.loadbalancer import constants as lb_const
|
||||
from neutron_lbaas.services.loadbalancer.drivers.haproxy import jinja_cfg
|
||||
from neutron_lbaas.services.loadbalancer.drivers.haproxy \
|
||||
import namespace_driver
|
||||
|
||||
LOG = logging.getLogger(__name__)
|
||||
NS_PREFIX = 'nlbaas-'
|
||||
STATS_TYPE_BACKEND_REQUEST = 2
|
||||
STATS_TYPE_BACKEND_RESPONSE = '1'
|
||||
STATS_TYPE_SERVER_REQUEST = 4
|
||||
STATS_TYPE_SERVER_RESPONSE = '2'
|
||||
# Do not want v1 instances to be in same directory as v2
|
||||
STATE_PATH_V2_APPEND = 'v2'
|
||||
DEFAULT_INTERFACE_DRIVER = 'neutron.agent.linux.interface.OVSInterfaceDriver'
|
||||
cfg.CONF.register_opts(namespace_driver.OPTS, 'haproxy')
|
||||
cfg.CONF.register_opts(lb_agent.OPTS, 'haproxy')
|
||||
cfg.CONF.register_opts(interface.OPTS)
|
||||
cfg.CONF.register_opts(config.INTERFACE_DRIVER_OPTS, 'haproxy')
|
||||
|
||||
|
||||
def get_ns_name(namespace_id):
|
||||
return NS_PREFIX + namespace_id
|
||||
|
||||
|
||||
class SimpleHaproxyStatsService(service.Service):
|
||||
|
||||
def __init__(self, driver):
|
||||
super(SimpleHaproxyStatsService, self).__init__()
|
||||
self.driver = driver
|
||||
|
||||
def start(self):
|
||||
super(SimpleHaproxyStatsService, self).start()
|
||||
self.tg.add_timer(self.driver.conf.haproxy.periodic_interval,
|
||||
self.driver.periodic_tasks,
|
||||
None,
|
||||
None)
|
||||
|
||||
|
||||
class HaproxyNSDriver(driver_base.LoadBalancerBaseDriver):
|
||||
|
||||
def __init__(self, plugin):
|
||||
super(HaproxyNSDriver, self).__init__(plugin)
|
||||
self.conf = cfg.CONF
|
||||
self.state_path = os.path.join(
|
||||
self.conf.haproxy.loadbalancer_state_path, STATE_PATH_V2_APPEND)
|
||||
if not self.conf.haproxy.interface_driver:
|
||||
self.conf.haproxy.interface_driver = DEFAULT_INTERFACE_DRIVER
|
||||
try:
|
||||
vif_driver = importutils.import_object(
|
||||
self.conf.haproxy.interface_driver, self.conf)
|
||||
except ImportError:
|
||||
with excutils.save_and_reraise_exception():
|
||||
msg = (_LE('Error importing interface driver: %s')
|
||||
% self.conf.haproxy.interface_driver)
|
||||
LOG.exception(msg)
|
||||
self.vif_driver = vif_driver
|
||||
|
||||
# instantiate managers here
|
||||
self.load_balancer = LoadBalancerManager(self)
|
||||
self.listener = ListenerManager(self)
|
||||
self.pool = PoolManager(self)
|
||||
self.member = MemberManager(self)
|
||||
self.health_monitor = HealthMonitorManager(self)
|
||||
|
||||
self.admin_ctx = ncontext.get_admin_context()
|
||||
self.deployed_loadbalancer_ids = set()
|
||||
self._deploy_existing_instances()
|
||||
|
||||
SimpleHaproxyStatsService(self).start()
|
||||
|
||||
def _deploy_existing_instances(self):
|
||||
dirs = self._retrieve_deployed_instance_dirs()
|
||||
loadbalancers = self._retrieve_db_loadbalancers_from_dirs(dirs)
|
||||
loadbalancer_ids = [loadbalancer.id for loadbalancer in loadbalancers]
|
||||
self.deployed_loadbalancer_ids.update(loadbalancer_ids)
|
||||
for loadbalancer in loadbalancers:
|
||||
try:
|
||||
self.update_instance(loadbalancer)
|
||||
except RuntimeError:
|
||||
# do not stop anything this is a minor error
|
||||
LOG.warn(_LW("Existing load balancer %s could not be deployed"
|
||||
" on the system.") % loadbalancer.id)
|
||||
|
||||
def _retrieve_deployed_instance_dirs(self):
|
||||
if not os.path.exists(self.state_path):
|
||||
os.makedirs(self.state_path)
|
||||
return [dir for dir in os.listdir(self.state_path)
|
||||
if os.path.isdir(os.path.join(self.state_path, dir))]
|
||||
|
||||
def _retrieve_db_loadbalancers_from_dirs(self, dirs):
|
||||
loadbalancers = []
|
||||
for dir in dirs:
|
||||
try:
|
||||
db_lb = self.plugin.db.get_loadbalancer(self.admin_ctx, dir)
|
||||
loadbalancers.append(db_lb)
|
||||
except loadbalancerv2.EntityNotFound:
|
||||
# Doesn't exist in database so clean up
|
||||
self._delete_instance_from_system(dir)
|
||||
continue
|
||||
return loadbalancers
|
||||
|
||||
def _plug_vip_port(self, context, port):
|
||||
port_dict = self.plugin.db._core_plugin.get_port(context, port.id)
|
||||
port_dict.update(self._build_port_dict())
|
||||
self.plugin.db._core_plugin.update_port(
|
||||
context,
|
||||
port.id,
|
||||
{'port': port_dict}
|
||||
)
|
||||
|
||||
def _build_port_dict(self):
|
||||
return {'admin_state_up': True,
|
||||
'device_owner': 'neutron:{0}'.format(
|
||||
constants.LOADBALANCER),
|
||||
'device_id': str(uuid.uuid5(uuid.NAMESPACE_DNS,
|
||||
str(self.conf.host))),
|
||||
portbindings.HOST_ID: self.conf.host}
|
||||
|
||||
def _get_state_file_path(self, loadbalancer_id, kind,
|
||||
ensure_state_dir=True):
|
||||
"""Returns the file name for a given kind of config file."""
|
||||
confs_dir = os.path.abspath(os.path.normpath(self.state_path))
|
||||
conf_dir = os.path.join(confs_dir, loadbalancer_id)
|
||||
if ensure_state_dir:
|
||||
if not os.path.isdir(conf_dir):
|
||||
os.makedirs(conf_dir, 0o755)
|
||||
return os.path.join(conf_dir, kind)
|
||||
|
||||
def _populate_subnets(self, context, port):
|
||||
for fixed_ip in port.fixed_ips:
|
||||
fixed_ip.subnet = self.plugin.db._core_plugin.get_subnet(
|
||||
context, fixed_ip.subnet_id)
|
||||
|
||||
def _plug(self, context, namespace, port, reuse_existing=True):
|
||||
self._plug_vip_port(context, port)
|
||||
|
||||
interface_name = self.vif_driver.get_device_name(port)
|
||||
|
||||
if ip_lib.device_exists(interface_name, namespace):
|
||||
if not reuse_existing:
|
||||
raise exceptions.PreexistingDeviceFailure(
|
||||
dev_name=interface_name
|
||||
)
|
||||
else:
|
||||
self.vif_driver.plug(
|
||||
port.network_id,
|
||||
port.id,
|
||||
interface_name,
|
||||
port.mac_address,
|
||||
namespace=namespace
|
||||
)
|
||||
|
||||
self._populate_subnets(context, port)
|
||||
|
||||
cidrs = [
|
||||
'%s/%s' % (ip.ip_address,
|
||||
netaddr.IPNetwork(ip.subnet['cidr']).prefixlen)
|
||||
for ip in port.fixed_ips
|
||||
]
|
||||
self.vif_driver.init_l3(interface_name, cidrs,
|
||||
namespace=namespace)
|
||||
|
||||
gw_ip = port.fixed_ips[0].subnet.get('gateway_ip')
|
||||
|
||||
if not gw_ip:
|
||||
host_routes = port.fixed_ips[0].subnet.get('host_routes', [])
|
||||
for host_route in host_routes:
|
||||
if host_route['destination'] == "0.0.0.0/0":
|
||||
gw_ip = host_route['nexthop']
|
||||
break
|
||||
|
||||
if gw_ip:
|
||||
cmd = ['route', 'add', 'default', 'gw', gw_ip]
|
||||
ip_wrapper = ip_lib.IPWrapper(namespace=namespace)
|
||||
ip_wrapper.netns.execute(cmd, check_exit_code=False)
|
||||
# When delete and re-add the same vip, we need to
|
||||
# send gratuitous ARP to flush the ARP cache in the Router.
|
||||
gratuitous_arp = self.conf.haproxy.send_gratuitous_arp
|
||||
if gratuitous_arp > 0:
|
||||
for ip in port.fixed_ips:
|
||||
cmd_arping = ['arping', '-U',
|
||||
'-I', interface_name,
|
||||
'-c', gratuitous_arp,
|
||||
ip.ip_address]
|
||||
ip_wrapper.netns.execute(cmd_arping, check_exit_code=False)
|
||||
|
||||
def _unplug(self, namespace, port_id):
|
||||
port_stub = {'id': port_id}
|
||||
interface_name = self.vif_driver.get_device_name(
|
||||
namespace_driver.Wrap(port_stub))
|
||||
self.vif_driver.unplug(interface_name, namespace=namespace)
|
||||
|
||||
def _spawn(self, loadbalancer, extra_cmd_args=()):
|
||||
namespace = get_ns_name(loadbalancer.id)
|
||||
conf_path = self._get_state_file_path(loadbalancer.id, 'haproxy.conf')
|
||||
pid_path = self._get_state_file_path(loadbalancer.id,
|
||||
'haproxy.pid')
|
||||
sock_path = self._get_state_file_path(loadbalancer.id,
|
||||
'haproxy_stats.sock')
|
||||
user_group = self.conf.haproxy.user_group
|
||||
|
||||
jinja_cfg.save_config(conf_path, loadbalancer, sock_path, user_group)
|
||||
cmd = ['haproxy', '-f', conf_path, '-p', pid_path]
|
||||
cmd.extend(extra_cmd_args)
|
||||
|
||||
ns = ip_lib.IPWrapper(namespace=namespace)
|
||||
ns.netns.execute(cmd)
|
||||
|
||||
# remember deployed loadbalancer id
|
||||
self.deployed_loadbalancer_ids.add(loadbalancer.id)
|
||||
|
||||
def _get_backend_stats(self, parsed_stats):
|
||||
for stats in parsed_stats:
|
||||
if stats.get('type') == STATS_TYPE_BACKEND_RESPONSE:
|
||||
unified_stats = dict((k, stats.get(v, ''))
|
||||
for k, v in jinja_cfg.STATS_MAP.items())
|
||||
return unified_stats
|
||||
|
||||
return {}
|
||||
|
||||
def _get_servers_stats(self, parsed_stats):
|
||||
res = {}
|
||||
for stats in parsed_stats:
|
||||
if stats.get('type') == STATS_TYPE_SERVER_RESPONSE:
|
||||
res[stats['svname']] = {
|
||||
lb_const.STATS_STATUS: (constants.INACTIVE
|
||||
if stats['status'] == 'DOWN'
|
||||
else constants.ACTIVE),
|
||||
lb_const.STATS_HEALTH: stats['check_status'],
|
||||
lb_const.STATS_FAILED_CHECKS: stats['chkfail']
|
||||
}
|
||||
return res
|
||||
|
||||
def _get_stats_from_socket(self, socket_path, entity_type):
|
||||
try:
|
||||
s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
|
||||
s.connect(socket_path)
|
||||
s.send('show stat -1 %s -1\n' % entity_type)
|
||||
raw_stats = ''
|
||||
chunk_size = 1024
|
||||
while True:
|
||||
chunk = s.recv(chunk_size)
|
||||
raw_stats += chunk
|
||||
if len(chunk) < chunk_size:
|
||||
break
|
||||
|
||||
return self._parse_stats(raw_stats)
|
||||
except socket.error as e:
|
||||
LOG.warn(_LW('Error while connecting to stats socket: %s'), e)
|
||||
return {}
|
||||
|
||||
def _parse_stats(self, raw_stats):
|
||||
stat_lines = raw_stats.splitlines()
|
||||
if len(stat_lines) < 2:
|
||||
return []
|
||||
stat_names = [name.strip('# ') for name in stat_lines[0].split(',')]
|
||||
res_stats = []
|
||||
for raw_values in stat_lines[1:]:
|
||||
if not raw_values:
|
||||
continue
|
||||
stat_values = [value.strip() for value in raw_values.split(',')]
|
||||
res_stats.append(dict(zip(stat_names, stat_values)))
|
||||
|
||||
return res_stats
|
||||
|
||||
def _collect_and_store_stats(self):
|
||||
for loadbalancer_id in self.deployed_loadbalancer_ids:
|
||||
loadbalancer = self.plugin.db.get_loadbalancer(self.admin_ctx,
|
||||
loadbalancer_id)
|
||||
stats = self.get_stats(loadbalancer)
|
||||
self.plugin.db.update_loadbalancer_stats(
|
||||
self.admin_ctx, loadbalancer.id, stats)
|
||||
if 'members' in stats:
|
||||
self._set_member_status(self.admin_ctx, loadbalancer,
|
||||
stats['members'])
|
||||
|
||||
def _get_members(self, loadbalancer):
|
||||
for listener in loadbalancer.listeners:
|
||||
if listener.default_pool:
|
||||
for member in listener.default_pool.members:
|
||||
yield member
|
||||
|
||||
def _set_member_status(self, context, loadbalancer, members_stats):
|
||||
for member in self._get_members(loadbalancer):
|
||||
if member.id in members_stats:
|
||||
status = members_stats[member.id].get('status')
|
||||
if status and status == constants.ACTIVE:
|
||||
self.plugin.db.update_status(
|
||||
context, self.member.model_class, member.id,
|
||||
operating_status=lb_const.ONLINE)
|
||||
else:
|
||||
self.plugin.db.update_status(
|
||||
context, self.member.model_class, member.id,
|
||||
operating_status=lb_const.OFFLINE)
|
||||
|
||||
def _remove_config_directory(self, loadbalancer_id):
|
||||
conf_dir = os.path.dirname(
|
||||
self._get_state_file_path(loadbalancer_id, ''))
|
||||
if os.path.isdir(conf_dir):
|
||||
shutil.rmtree(conf_dir)
|
||||
if loadbalancer_id in self.deployed_loadbalancer_ids:
|
||||
# If it doesn't exist then didn't need to remove in the first place
|
||||
self.deployed_loadbalancer_ids.remove(loadbalancer_id)
|
||||
|
||||
def _cleanup_namespace(self, loadbalancer_id):
|
||||
namespace = get_ns_name(loadbalancer_id)
|
||||
ns = ip_lib.IPWrapper(namespace=namespace)
|
||||
try:
|
||||
for device in ns.get_devices(exclude_loopback=True):
|
||||
if ip_lib.device_exists(device.name):
|
||||
self.vif_driver.unplug(device.name, namespace=namespace)
|
||||
except RuntimeError as re:
|
||||
LOG.warn(_LW('An error happend on namespace cleanup: '
|
||||
'%s') % re.message)
|
||||
ns.garbage_collect_namespace()
|
||||
|
||||
def _kill_processes(self, loadbalancer_id):
|
||||
pid_path = self._get_state_file_path(loadbalancer_id, 'haproxy.pid')
|
||||
# kill the process
|
||||
namespace_driver.kill_pids_in_file(pid_path)
|
||||
|
||||
def _unplug_vip_port(self, loadbalancer):
|
||||
namespace = get_ns_name(loadbalancer.id)
|
||||
if loadbalancer.vip_port_id:
|
||||
self._unplug(namespace, loadbalancer.vip_port_id)
|
||||
|
||||
def _delete_instance_from_system(self, loadbalancer_id):
|
||||
self._kill_processes(loadbalancer_id)
|
||||
self._cleanup_namespace(loadbalancer_id)
|
||||
self._remove_config_directory(loadbalancer_id)
|
||||
|
||||
@log.log
|
||||
def periodic_tasks(self, *args):
|
||||
try:
|
||||
self._collect_and_store_stats()
|
||||
except Exception:
|
||||
LOG.exception(_LE("Periodic task failed."))
|
||||
|
||||
def create_instance(self, context, loadbalancer):
|
||||
namespace = get_ns_name(loadbalancer.id)
|
||||
|
||||
self._plug(context, namespace, loadbalancer.vip_port)
|
||||
self._spawn(loadbalancer)
|
||||
|
||||
def update_instance(self, loadbalancer):
|
||||
pid_path = self._get_state_file_path(loadbalancer.id,
|
||||
'haproxy.pid')
|
||||
|
||||
extra_args = ['-sf']
|
||||
extra_args.extend(p.strip() for p in open(pid_path, 'r'))
|
||||
self._spawn(loadbalancer, extra_args)
|
||||
|
||||
def delete_instance(self, loadbalancer, cleanup_namespace=False):
|
||||
self._kill_processes(loadbalancer.id)
|
||||
# unplug the ports
|
||||
self._unplug_vip_port(loadbalancer)
|
||||
# delete all devices from namespace;
|
||||
# used when deleting orphans and vip_port_id is not known for
|
||||
# loadbalancer_id
|
||||
if cleanup_namespace:
|
||||
self._cleanup_namespace(loadbalancer.id)
|
||||
self._remove_config_directory(loadbalancer.id)
|
||||
|
||||
def exists(self, loadbalancer):
|
||||
namespace = get_ns_name(loadbalancer.id)
|
||||
root_ns = ip_lib.IPWrapper()
|
||||
|
||||
socket_path = self._get_state_file_path(
|
||||
loadbalancer.id, 'haproxy_stats.sock', False)
|
||||
if root_ns.netns.exists(namespace) and os.path.exists(socket_path):
|
||||
try:
|
||||
s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
|
||||
s.connect(socket_path)
|
||||
return True
|
||||
except socket.error:
|
||||
pass
|
||||
return False
|
||||
|
||||
def get_stats(self, loadbalancer):
|
||||
socket_path = self._get_state_file_path(loadbalancer.id,
|
||||
'haproxy_stats.sock',
|
||||
False)
|
||||
if os.path.exists(socket_path):
|
||||
parsed_stats = self._get_stats_from_socket(
|
||||
socket_path,
|
||||
entity_type=(STATS_TYPE_BACKEND_REQUEST |
|
||||
STATS_TYPE_SERVER_REQUEST))
|
||||
lb_stats = self._get_backend_stats(parsed_stats)
|
||||
lb_stats['members'] = self._get_servers_stats(parsed_stats)
|
||||
return lb_stats
|
||||
else:
|
||||
LOG.warn(_LW('Stats socket not found for load balancer %s'),
|
||||
loadbalancer.id)
|
||||
return {}
|
||||
|
||||
|
||||
class LoadBalancerManager(driver_base.BaseLoadBalancerManager):
|
||||
|
||||
def refresh(self, context, loadbalancer):
|
||||
super(LoadBalancerManager, self).refresh(context, loadbalancer)
|
||||
if not self.deployable(loadbalancer):
|
||||
#TODO(brandon-logan): Ensure there is a way to sync the change
|
||||
#later. Periodic task perhaps.
|
||||
return
|
||||
|
||||
if self.driver.exists(loadbalancer):
|
||||
self.driver.update_instance(loadbalancer)
|
||||
else:
|
||||
self.driver.create_instance(context, loadbalancer)
|
||||
|
||||
def delete(self, context, loadbalancer):
|
||||
super(LoadBalancerManager, self).delete(context, loadbalancer)
|
||||
try:
|
||||
self.driver.delete_instance(loadbalancer)
|
||||
self.successful_completion(context, loadbalancer, delete=True)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, loadbalancer)
|
||||
raise e
|
||||
|
||||
def create(self, context, loadbalancer):
|
||||
super(LoadBalancerManager, self).create(context, loadbalancer)
|
||||
# loadbalancer has no listeners then do nothing because haproxy will
|
||||
# not start without a tcp port. Consider this successful anyway.
|
||||
if not loadbalancer.listeners:
|
||||
self.successful_completion(context, loadbalancer)
|
||||
return
|
||||
|
||||
try:
|
||||
self.refresh(context, loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, loadbalancer)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, loadbalancer)
|
||||
|
||||
def stats(self, context, loadbalancer):
|
||||
super(LoadBalancerManager, self).stats(context, loadbalancer)
|
||||
return self.driver.get_stats(loadbalancer)
|
||||
|
||||
def update(self, context, old_loadbalancer, loadbalancer):
|
||||
super(LoadBalancerManager, self).update(context, old_loadbalancer,
|
||||
loadbalancer)
|
||||
try:
|
||||
self.refresh(context, loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, loadbalancer)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, loadbalancer)
|
||||
|
||||
def deployable(self, loadbalancer):
|
||||
if not loadbalancer:
|
||||
return False
|
||||
acceptable_listeners = [
|
||||
listener for listener in loadbalancer.listeners
|
||||
if (listener.provisioning_status != constants.PENDING_DELETE and
|
||||
listener.admin_state_up)]
|
||||
return (bool(acceptable_listeners) and loadbalancer.admin_state_up and
|
||||
loadbalancer.provisioning_status != constants.PENDING_DELETE)
|
||||
|
||||
|
||||
class ListenerManager(driver_base.BaseListenerManager):
|
||||
|
||||
def _remove_listener(self, loadbalancer, listener_id):
|
||||
index_to_remove = None
|
||||
for index, listener in enumerate(loadbalancer.listeners):
|
||||
if listener.id == listener_id:
|
||||
index_to_remove = index
|
||||
loadbalancer.listeners.pop(index_to_remove)
|
||||
|
||||
def update(self, context, old_listener, new_listener):
|
||||
super(ListenerManager, self).update(context, old_listener,
|
||||
new_listener)
|
||||
try:
|
||||
self.driver.load_balancer.refresh(context,
|
||||
new_listener.loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, new_listener)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, new_listener)
|
||||
|
||||
def create(self, context, listener):
|
||||
super(ListenerManager, self).create(context, listener)
|
||||
try:
|
||||
self.driver.load_balancer.refresh(context, listener.loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, listener)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, listener)
|
||||
|
||||
def delete(self, context, listener):
|
||||
super(ListenerManager, self).delete(context, listener)
|
||||
loadbalancer = listener.loadbalancer
|
||||
self._remove_listener(loadbalancer, listener.id)
|
||||
try:
|
||||
if len(loadbalancer.listeners) > 0:
|
||||
self.driver.load_balancer.refresh(context, loadbalancer)
|
||||
else:
|
||||
# delete instance because haproxy will throw error if port is
|
||||
# missing in frontend
|
||||
self.driver.delete_instance(loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, listener)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, listener, delete=True)
|
||||
|
||||
|
||||
class PoolManager(driver_base.BasePoolManager):
|
||||
|
||||
def update(self, context, old_pool, new_pool):
|
||||
super(PoolManager, self).update(context, old_pool, new_pool)
|
||||
try:
|
||||
self.driver.load_balancer.refresh(context,
|
||||
new_pool.listener.loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, new_pool)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, new_pool)
|
||||
|
||||
def create(self, context, pool):
|
||||
super(PoolManager, self).delete(context, pool)
|
||||
try:
|
||||
self.driver.load_balancer.refresh(context,
|
||||
pool.listener.loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, pool)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, pool)
|
||||
|
||||
def delete(self, context, pool):
|
||||
super(PoolManager, self).delete(context, pool)
|
||||
loadbalancer = pool.listener.loadbalancer
|
||||
pool.listener.default_pool = None
|
||||
try:
|
||||
# just refresh because haproxy is fine if only frontend is listed
|
||||
self.driver.load_balancer.refresh(context, loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, pool)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, pool, delete=True)
|
||||
|
||||
|
||||
class MemberManager(driver_base.BaseMemberManager):
|
||||
|
||||
def _remove_member(self, pool, member_id):
|
||||
index_to_remove = None
|
||||
for index, member in enumerate(pool.members):
|
||||
if member.id == member_id:
|
||||
index_to_remove = index
|
||||
pool.members.pop(index_to_remove)
|
||||
|
||||
def update(self, context, old_member, new_member):
|
||||
super(MemberManager, self).update(context, old_member, new_member)
|
||||
try:
|
||||
self.driver.load_balancer.refresh(
|
||||
context, new_member.pool.listener.loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, new_member)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, new_member)
|
||||
|
||||
def create(self, context, member):
|
||||
super(MemberManager, self).create(context, member)
|
||||
try:
|
||||
self.driver.load_balancer.refresh(
|
||||
context, member.pool.listener.loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, member)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, member)
|
||||
|
||||
def delete(self, context, member):
|
||||
super(MemberManager, self).delete(context, member)
|
||||
self._remove_member(member.pool, member.id)
|
||||
try:
|
||||
self.driver.load_balancer.refresh(
|
||||
context, member.pool.listener.loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, member)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, member, delete=True)
|
||||
|
||||
|
||||
class HealthMonitorManager(driver_base.BaseHealthMonitorManager):
|
||||
|
||||
def update(self, context, old_hm, new_hm):
|
||||
super(HealthMonitorManager, self).update(context, old_hm, new_hm)
|
||||
try:
|
||||
self.driver.load_balancer.refresh(
|
||||
context, new_hm.pool.listener.loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, new_hm)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, new_hm)
|
||||
|
||||
def create(self, context, hm):
|
||||
super(HealthMonitorManager, self).create(context, hm)
|
||||
try:
|
||||
self.driver.load_balancer.refresh(
|
||||
context, hm.pool.listener.loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, hm)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, hm)
|
||||
|
||||
def delete(self, context, hm):
|
||||
super(HealthMonitorManager, self).delete(context, hm)
|
||||
hm.pool.healthmonitor = None
|
||||
try:
|
||||
self.driver.load_balancer.refresh(context,
|
||||
hm.pool.listener.loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, hm)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, hm, delete=True)
|
||||
|
|
@ -14,7 +14,7 @@
|
|||
|
||||
from neutron.openstack.common import log as logging
|
||||
|
||||
from neutron_lbaas.services.loadbalancer.drivers import driver_base
|
||||
from neutron_lbaas.drivers import driver_base
|
||||
|
||||
LOG = logging.getLogger(__name__)
|
||||
|
||||
|
|
@ -12,654 +12,12 @@
|
|||
# License for the specific language governing permissions and limitations
|
||||
# under the License.
|
||||
|
||||
import os
|
||||
import shutil
|
||||
import socket
|
||||
import uuid
|
||||
|
||||
import netaddr
|
||||
from neutron.agent.common import config
|
||||
from neutron.agent.linux import interface
|
||||
from neutron.agent.linux import ip_lib
|
||||
from neutron.common import exceptions
|
||||
from neutron.common import log
|
||||
from neutron import context as ncontext
|
||||
from neutron.extensions import portbindings
|
||||
from neutron.i18n import _LE, _LW
|
||||
from neutron.i18n import _LW
|
||||
from neutron.openstack.common import log as logging
|
||||
from neutron.openstack.common import service
|
||||
from neutron.plugins.common import constants
|
||||
from oslo_config import cfg
|
||||
from oslo_utils import excutils
|
||||
from oslo_utils import importutils
|
||||
|
||||
from neutron_lbaas.extensions import loadbalancerv2
|
||||
from neutron_lbaas.services.loadbalancer.agent import agent as lb_agent
|
||||
from neutron_lbaas.services.loadbalancer import constants as lb_const
|
||||
from neutron_lbaas.services.loadbalancer.drivers import driver_base
|
||||
from neutron_lbaas.services.loadbalancer.drivers.haproxy import jinja_cfg
|
||||
from neutron_lbaas.services.loadbalancer.drivers.haproxy \
|
||||
import namespace_driver
|
||||
from neutron_lbaas.drivers.haproxy import synchronous_namespace_driver
|
||||
|
||||
LOG = logging.getLogger(__name__)
|
||||
NS_PREFIX = 'nlbaas-'
|
||||
STATS_TYPE_BACKEND_REQUEST = 2
|
||||
STATS_TYPE_BACKEND_RESPONSE = '1'
|
||||
STATS_TYPE_SERVER_REQUEST = 4
|
||||
STATS_TYPE_SERVER_RESPONSE = '2'
|
||||
# Do not want v1 instances to be in same directory as v2
|
||||
STATE_PATH_V2_APPEND = 'v2'
|
||||
DEFAULT_INTERFACE_DRIVER = 'neutron.agent.linux.interface.OVSInterfaceDriver'
|
||||
cfg.CONF.register_opts(namespace_driver.OPTS, 'haproxy')
|
||||
cfg.CONF.register_opts(lb_agent.OPTS, 'haproxy')
|
||||
cfg.CONF.register_opts(interface.OPTS)
|
||||
cfg.CONF.register_opts(config.INTERFACE_DRIVER_OPTS, 'haproxy')
|
||||
|
||||
|
||||
def get_ns_name(namespace_id):
|
||||
return NS_PREFIX + namespace_id
|
||||
|
||||
|
||||
class SimpleHaproxyStatsService(service.Service):
|
||||
|
||||
def __init__(self, driver):
|
||||
super(SimpleHaproxyStatsService, self).__init__()
|
||||
self.driver = driver
|
||||
|
||||
def start(self):
|
||||
super(SimpleHaproxyStatsService, self).start()
|
||||
self.tg.add_timer(self.driver.conf.haproxy.periodic_interval,
|
||||
self.driver.periodic_tasks,
|
||||
None,
|
||||
None)
|
||||
|
||||
|
||||
class HaproxyNSDriver(driver_base.LoadBalancerBaseDriver):
|
||||
|
||||
def __init__(self, plugin):
|
||||
super(HaproxyNSDriver, self).__init__(plugin)
|
||||
self.conf = cfg.CONF
|
||||
self.state_path = os.path.join(
|
||||
self.conf.haproxy.loadbalancer_state_path, STATE_PATH_V2_APPEND)
|
||||
if not self.conf.haproxy.interface_driver:
|
||||
self.conf.haproxy.interface_driver = DEFAULT_INTERFACE_DRIVER
|
||||
try:
|
||||
vif_driver = importutils.import_object(
|
||||
self.conf.haproxy.interface_driver, self.conf)
|
||||
except ImportError:
|
||||
with excutils.save_and_reraise_exception():
|
||||
msg = (_LE('Error importing interface driver: %s')
|
||||
% self.conf.haproxy.interface_driver)
|
||||
LOG.exception(msg)
|
||||
self.vif_driver = vif_driver
|
||||
|
||||
# instantiate managers here
|
||||
self.load_balancer = LoadBalancerManager(self)
|
||||
self.listener = ListenerManager(self)
|
||||
self.pool = PoolManager(self)
|
||||
self.member = MemberManager(self)
|
||||
self.health_monitor = HealthMonitorManager(self)
|
||||
|
||||
self.admin_ctx = ncontext.get_admin_context()
|
||||
self.deployed_loadbalancer_ids = set()
|
||||
self._deploy_existing_instances()
|
||||
|
||||
SimpleHaproxyStatsService(self).start()
|
||||
|
||||
def _deploy_existing_instances(self):
|
||||
dirs = self._retrieve_deployed_instance_dirs()
|
||||
loadbalancers = self._retrieve_db_loadbalancers_from_dirs(dirs)
|
||||
loadbalancer_ids = [loadbalancer.id for loadbalancer in loadbalancers]
|
||||
self.deployed_loadbalancer_ids.update(loadbalancer_ids)
|
||||
for loadbalancer in loadbalancers:
|
||||
try:
|
||||
self.update_instance(loadbalancer)
|
||||
except RuntimeError:
|
||||
# do not stop anything this is a minor error
|
||||
LOG.warn(_LW("Existing load balancer %s could not be deployed"
|
||||
" on the system.") % loadbalancer.id)
|
||||
|
||||
def _retrieve_deployed_instance_dirs(self):
|
||||
if not os.path.exists(self.state_path):
|
||||
os.makedirs(self.state_path)
|
||||
return [dir for dir in os.listdir(self.state_path)
|
||||
if os.path.isdir(os.path.join(self.state_path, dir))]
|
||||
|
||||
def _retrieve_db_loadbalancers_from_dirs(self, dirs):
|
||||
loadbalancers = []
|
||||
for dir in dirs:
|
||||
try:
|
||||
db_lb = self.plugin.db.get_loadbalancer(self.admin_ctx, dir)
|
||||
loadbalancers.append(db_lb)
|
||||
except loadbalancerv2.EntityNotFound:
|
||||
# Doesn't exist in database so clean up
|
||||
self._delete_instance_from_system(dir)
|
||||
continue
|
||||
return loadbalancers
|
||||
|
||||
def _plug_vip_port(self, context, port):
|
||||
port_dict = self.plugin.db._core_plugin.get_port(context, port.id)
|
||||
port_dict.update(self._build_port_dict())
|
||||
self.plugin.db._core_plugin.update_port(
|
||||
context,
|
||||
port.id,
|
||||
{'port': port_dict}
|
||||
)
|
||||
|
||||
def _build_port_dict(self):
|
||||
return {'admin_state_up': True,
|
||||
'device_owner': 'neutron:{0}'.format(
|
||||
constants.LOADBALANCER),
|
||||
'device_id': str(uuid.uuid5(uuid.NAMESPACE_DNS,
|
||||
str(self.conf.host))),
|
||||
portbindings.HOST_ID: self.conf.host}
|
||||
|
||||
def _get_state_file_path(self, loadbalancer_id, kind,
|
||||
ensure_state_dir=True):
|
||||
"""Returns the file name for a given kind of config file."""
|
||||
confs_dir = os.path.abspath(os.path.normpath(self.state_path))
|
||||
conf_dir = os.path.join(confs_dir, loadbalancer_id)
|
||||
if ensure_state_dir:
|
||||
if not os.path.isdir(conf_dir):
|
||||
os.makedirs(conf_dir, 0o755)
|
||||
return os.path.join(conf_dir, kind)
|
||||
|
||||
def _populate_subnets(self, context, port):
|
||||
for fixed_ip in port.fixed_ips:
|
||||
fixed_ip.subnet = self.plugin.db._core_plugin.get_subnet(
|
||||
context, fixed_ip.subnet_id)
|
||||
|
||||
def _plug(self, context, namespace, port, reuse_existing=True):
|
||||
self._plug_vip_port(context, port)
|
||||
|
||||
interface_name = self.vif_driver.get_device_name(port)
|
||||
|
||||
if ip_lib.device_exists(interface_name, namespace):
|
||||
if not reuse_existing:
|
||||
raise exceptions.PreexistingDeviceFailure(
|
||||
dev_name=interface_name
|
||||
)
|
||||
else:
|
||||
self.vif_driver.plug(
|
||||
port.network_id,
|
||||
port.id,
|
||||
interface_name,
|
||||
port.mac_address,
|
||||
namespace=namespace
|
||||
)
|
||||
|
||||
self._populate_subnets(context, port)
|
||||
|
||||
cidrs = [
|
||||
'%s/%s' % (ip.ip_address,
|
||||
netaddr.IPNetwork(ip.subnet['cidr']).prefixlen)
|
||||
for ip in port.fixed_ips
|
||||
]
|
||||
self.vif_driver.init_l3(interface_name, cidrs,
|
||||
namespace=namespace)
|
||||
|
||||
gw_ip = port.fixed_ips[0].subnet.get('gateway_ip')
|
||||
|
||||
if not gw_ip:
|
||||
host_routes = port.fixed_ips[0].subnet.get('host_routes', [])
|
||||
for host_route in host_routes:
|
||||
if host_route['destination'] == "0.0.0.0/0":
|
||||
gw_ip = host_route['nexthop']
|
||||
break
|
||||
|
||||
if gw_ip:
|
||||
cmd = ['route', 'add', 'default', 'gw', gw_ip]
|
||||
ip_wrapper = ip_lib.IPWrapper(namespace=namespace)
|
||||
ip_wrapper.netns.execute(cmd, check_exit_code=False)
|
||||
# When delete and re-add the same vip, we need to
|
||||
# send gratuitous ARP to flush the ARP cache in the Router.
|
||||
gratuitous_arp = self.conf.haproxy.send_gratuitous_arp
|
||||
if gratuitous_arp > 0:
|
||||
for ip in port.fixed_ips:
|
||||
cmd_arping = ['arping', '-U',
|
||||
'-I', interface_name,
|
||||
'-c', gratuitous_arp,
|
||||
ip.ip_address]
|
||||
ip_wrapper.netns.execute(cmd_arping, check_exit_code=False)
|
||||
|
||||
def _unplug(self, namespace, port_id):
|
||||
port_stub = {'id': port_id}
|
||||
interface_name = self.vif_driver.get_device_name(
|
||||
namespace_driver.Wrap(port_stub))
|
||||
self.vif_driver.unplug(interface_name, namespace=namespace)
|
||||
|
||||
def _spawn(self, loadbalancer, extra_cmd_args=()):
|
||||
namespace = get_ns_name(loadbalancer.id)
|
||||
conf_path = self._get_state_file_path(loadbalancer.id, 'haproxy.conf')
|
||||
pid_path = self._get_state_file_path(loadbalancer.id,
|
||||
'haproxy.pid')
|
||||
sock_path = self._get_state_file_path(loadbalancer.id,
|
||||
'haproxy_stats.sock')
|
||||
user_group = self.conf.haproxy.user_group
|
||||
|
||||
jinja_cfg.save_config(conf_path, loadbalancer, sock_path, user_group)
|
||||
cmd = ['haproxy', '-f', conf_path, '-p', pid_path]
|
||||
cmd.extend(extra_cmd_args)
|
||||
|
||||
ns = ip_lib.IPWrapper(namespace=namespace)
|
||||
ns.netns.execute(cmd)
|
||||
|
||||
# remember deployed loadbalancer id
|
||||
self.deployed_loadbalancer_ids.add(loadbalancer.id)
|
||||
|
||||
def _get_backend_stats(self, parsed_stats):
|
||||
for stats in parsed_stats:
|
||||
if stats.get('type') == STATS_TYPE_BACKEND_RESPONSE:
|
||||
unified_stats = dict((k, stats.get(v, ''))
|
||||
for k, v in jinja_cfg.STATS_MAP.items())
|
||||
return unified_stats
|
||||
|
||||
return {}
|
||||
|
||||
def _get_servers_stats(self, parsed_stats):
|
||||
res = {}
|
||||
for stats in parsed_stats:
|
||||
if stats.get('type') == STATS_TYPE_SERVER_RESPONSE:
|
||||
res[stats['svname']] = {
|
||||
lb_const.STATS_STATUS: (constants.INACTIVE
|
||||
if stats['status'] == 'DOWN'
|
||||
else constants.ACTIVE),
|
||||
lb_const.STATS_HEALTH: stats['check_status'],
|
||||
lb_const.STATS_FAILED_CHECKS: stats['chkfail']
|
||||
}
|
||||
return res
|
||||
|
||||
def _get_stats_from_socket(self, socket_path, entity_type):
|
||||
try:
|
||||
s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
|
||||
s.connect(socket_path)
|
||||
s.send('show stat -1 %s -1\n' % entity_type)
|
||||
raw_stats = ''
|
||||
chunk_size = 1024
|
||||
while True:
|
||||
chunk = s.recv(chunk_size)
|
||||
raw_stats += chunk
|
||||
if len(chunk) < chunk_size:
|
||||
break
|
||||
|
||||
return self._parse_stats(raw_stats)
|
||||
except socket.error as e:
|
||||
LOG.warn(_LW('Error while connecting to stats socket: %s'), e)
|
||||
return {}
|
||||
|
||||
def _parse_stats(self, raw_stats):
|
||||
stat_lines = raw_stats.splitlines()
|
||||
if len(stat_lines) < 2:
|
||||
return []
|
||||
stat_names = [name.strip('# ') for name in stat_lines[0].split(',')]
|
||||
res_stats = []
|
||||
for raw_values in stat_lines[1:]:
|
||||
if not raw_values:
|
||||
continue
|
||||
stat_values = [value.strip() for value in raw_values.split(',')]
|
||||
res_stats.append(dict(zip(stat_names, stat_values)))
|
||||
|
||||
return res_stats
|
||||
|
||||
def _collect_and_store_stats(self):
|
||||
for loadbalancer_id in self.deployed_loadbalancer_ids:
|
||||
loadbalancer = self.plugin.db.get_loadbalancer(self.admin_ctx,
|
||||
loadbalancer_id)
|
||||
stats = self.get_stats(loadbalancer)
|
||||
self.plugin.db.update_loadbalancer_stats(
|
||||
self.admin_ctx, loadbalancer.id, stats)
|
||||
if 'members' in stats:
|
||||
self._set_member_status(self.admin_ctx, loadbalancer,
|
||||
stats['members'])
|
||||
|
||||
def _get_members(self, loadbalancer):
|
||||
for listener in loadbalancer.listeners:
|
||||
if listener.default_pool:
|
||||
for member in listener.default_pool.members:
|
||||
yield member
|
||||
|
||||
def _set_member_status(self, context, loadbalancer, members_stats):
|
||||
for member in self._get_members(loadbalancer):
|
||||
if member.id in members_stats:
|
||||
status = members_stats[member.id].get('status')
|
||||
if status and status == constants.ACTIVE:
|
||||
self.plugin.db.update_status(
|
||||
context, self.member.model_class, member.id,
|
||||
operating_status=lb_const.ONLINE)
|
||||
else:
|
||||
self.plugin.db.update_status(
|
||||
context, self.member.model_class, member.id,
|
||||
operating_status=lb_const.OFFLINE)
|
||||
|
||||
def _remove_config_directory(self, loadbalancer_id):
|
||||
conf_dir = os.path.dirname(
|
||||
self._get_state_file_path(loadbalancer_id, ''))
|
||||
if os.path.isdir(conf_dir):
|
||||
shutil.rmtree(conf_dir)
|
||||
if loadbalancer_id in self.deployed_loadbalancer_ids:
|
||||
# If it doesn't exist then didn't need to remove in the first place
|
||||
self.deployed_loadbalancer_ids.remove(loadbalancer_id)
|
||||
|
||||
def _cleanup_namespace(self, loadbalancer_id):
|
||||
namespace = get_ns_name(loadbalancer_id)
|
||||
ns = ip_lib.IPWrapper(namespace=namespace)
|
||||
try:
|
||||
for device in ns.get_devices(exclude_loopback=True):
|
||||
if ip_lib.device_exists(device.name):
|
||||
self.vif_driver.unplug(device.name, namespace=namespace)
|
||||
except RuntimeError as re:
|
||||
LOG.warn(_LW('An error happend on namespace cleanup: '
|
||||
'%s') % re.message)
|
||||
ns.garbage_collect_namespace()
|
||||
|
||||
def _kill_processes(self, loadbalancer_id):
|
||||
pid_path = self._get_state_file_path(loadbalancer_id, 'haproxy.pid')
|
||||
# kill the process
|
||||
namespace_driver.kill_pids_in_file(pid_path)
|
||||
|
||||
def _unplug_vip_port(self, loadbalancer):
|
||||
namespace = get_ns_name(loadbalancer.id)
|
||||
if loadbalancer.vip_port_id:
|
||||
self._unplug(namespace, loadbalancer.vip_port_id)
|
||||
|
||||
def _delete_instance_from_system(self, loadbalancer_id):
|
||||
self._kill_processes(loadbalancer_id)
|
||||
self._cleanup_namespace(loadbalancer_id)
|
||||
self._remove_config_directory(loadbalancer_id)
|
||||
|
||||
@log.log
|
||||
def periodic_tasks(self, *args):
|
||||
try:
|
||||
self._collect_and_store_stats()
|
||||
except Exception:
|
||||
LOG.exception(_LE("Periodic task failed."))
|
||||
|
||||
def create_instance(self, context, loadbalancer):
|
||||
namespace = get_ns_name(loadbalancer.id)
|
||||
|
||||
self._plug(context, namespace, loadbalancer.vip_port)
|
||||
self._spawn(loadbalancer)
|
||||
|
||||
def update_instance(self, loadbalancer):
|
||||
pid_path = self._get_state_file_path(loadbalancer.id,
|
||||
'haproxy.pid')
|
||||
|
||||
extra_args = ['-sf']
|
||||
extra_args.extend(p.strip() for p in open(pid_path, 'r'))
|
||||
self._spawn(loadbalancer, extra_args)
|
||||
|
||||
def delete_instance(self, loadbalancer, cleanup_namespace=False):
|
||||
self._kill_processes(loadbalancer.id)
|
||||
# unplug the ports
|
||||
self._unplug_vip_port(loadbalancer)
|
||||
# delete all devices from namespace;
|
||||
# used when deleting orphans and vip_port_id is not known for
|
||||
# loadbalancer_id
|
||||
if cleanup_namespace:
|
||||
self._cleanup_namespace(loadbalancer.id)
|
||||
self._remove_config_directory(loadbalancer.id)
|
||||
|
||||
def exists(self, loadbalancer):
|
||||
namespace = get_ns_name(loadbalancer.id)
|
||||
root_ns = ip_lib.IPWrapper()
|
||||
|
||||
socket_path = self._get_state_file_path(
|
||||
loadbalancer.id, 'haproxy_stats.sock', False)
|
||||
if root_ns.netns.exists(namespace) and os.path.exists(socket_path):
|
||||
try:
|
||||
s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
|
||||
s.connect(socket_path)
|
||||
return True
|
||||
except socket.error:
|
||||
pass
|
||||
return False
|
||||
|
||||
def get_stats(self, loadbalancer):
|
||||
socket_path = self._get_state_file_path(loadbalancer.id,
|
||||
'haproxy_stats.sock',
|
||||
False)
|
||||
if os.path.exists(socket_path):
|
||||
parsed_stats = self._get_stats_from_socket(
|
||||
socket_path,
|
||||
entity_type=(STATS_TYPE_BACKEND_REQUEST |
|
||||
STATS_TYPE_SERVER_REQUEST))
|
||||
lb_stats = self._get_backend_stats(parsed_stats)
|
||||
lb_stats['members'] = self._get_servers_stats(parsed_stats)
|
||||
return lb_stats
|
||||
else:
|
||||
LOG.warn(_LW('Stats socket not found for load balancer %s'),
|
||||
loadbalancer.id)
|
||||
return {}
|
||||
|
||||
|
||||
class LoadBalancerManager(driver_base.BaseLoadBalancerManager):
|
||||
|
||||
def refresh(self, context, loadbalancer):
|
||||
super(LoadBalancerManager, self).refresh(context, loadbalancer)
|
||||
if not self.deployable(loadbalancer):
|
||||
#TODO(brandon-logan): Ensure there is a way to sync the change
|
||||
#later. Periodic task perhaps.
|
||||
return
|
||||
|
||||
if self.driver.exists(loadbalancer):
|
||||
self.driver.update_instance(loadbalancer)
|
||||
else:
|
||||
self.driver.create_instance(context, loadbalancer)
|
||||
|
||||
def delete(self, context, loadbalancer):
|
||||
super(LoadBalancerManager, self).delete(context, loadbalancer)
|
||||
try:
|
||||
self.driver.delete_instance(loadbalancer)
|
||||
self.successful_completion(context, loadbalancer, delete=True)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, loadbalancer)
|
||||
raise e
|
||||
|
||||
def create(self, context, loadbalancer):
|
||||
super(LoadBalancerManager, self).create(context, loadbalancer)
|
||||
# loadbalancer has no listeners then do nothing because haproxy will
|
||||
# not start without a tcp port. Consider this successful anyway.
|
||||
if not loadbalancer.listeners:
|
||||
self.successful_completion(context, loadbalancer)
|
||||
return
|
||||
|
||||
try:
|
||||
self.refresh(context, loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, loadbalancer)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, loadbalancer)
|
||||
|
||||
def stats(self, context, loadbalancer):
|
||||
super(LoadBalancerManager, self).stats(context, loadbalancer)
|
||||
return self.driver.get_stats(loadbalancer)
|
||||
|
||||
def update(self, context, old_loadbalancer, loadbalancer):
|
||||
super(LoadBalancerManager, self).update(context, old_loadbalancer,
|
||||
loadbalancer)
|
||||
try:
|
||||
self.refresh(context, loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, loadbalancer)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, loadbalancer)
|
||||
|
||||
def deployable(self, loadbalancer):
|
||||
if not loadbalancer:
|
||||
return False
|
||||
acceptable_listeners = [
|
||||
listener for listener in loadbalancer.listeners
|
||||
if (listener.provisioning_status != constants.PENDING_DELETE and
|
||||
listener.admin_state_up)]
|
||||
return (bool(acceptable_listeners) and loadbalancer.admin_state_up and
|
||||
loadbalancer.provisioning_status != constants.PENDING_DELETE)
|
||||
|
||||
|
||||
class ListenerManager(driver_base.BaseListenerManager):
|
||||
|
||||
def _remove_listener(self, loadbalancer, listener_id):
|
||||
index_to_remove = None
|
||||
for index, listener in enumerate(loadbalancer.listeners):
|
||||
if listener.id == listener_id:
|
||||
index_to_remove = index
|
||||
loadbalancer.listeners.pop(index_to_remove)
|
||||
|
||||
def update(self, context, old_listener, new_listener):
|
||||
super(ListenerManager, self).update(context, old_listener,
|
||||
new_listener)
|
||||
try:
|
||||
self.driver.load_balancer.refresh(context,
|
||||
new_listener.loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, new_listener)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, new_listener)
|
||||
|
||||
def create(self, context, listener):
|
||||
super(ListenerManager, self).create(context, listener)
|
||||
try:
|
||||
self.driver.load_balancer.refresh(context, listener.loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, listener)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, listener)
|
||||
|
||||
def delete(self, context, listener):
|
||||
super(ListenerManager, self).delete(context, listener)
|
||||
loadbalancer = listener.loadbalancer
|
||||
self._remove_listener(loadbalancer, listener.id)
|
||||
try:
|
||||
if len(loadbalancer.listeners) > 0:
|
||||
self.driver.load_balancer.refresh(context, loadbalancer)
|
||||
else:
|
||||
# delete instance because haproxy will throw error if port is
|
||||
# missing in frontend
|
||||
self.driver.delete_instance(loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, listener)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, listener, delete=True)
|
||||
|
||||
|
||||
class PoolManager(driver_base.BasePoolManager):
|
||||
|
||||
def update(self, context, old_pool, new_pool):
|
||||
super(PoolManager, self).update(context, old_pool, new_pool)
|
||||
try:
|
||||
self.driver.load_balancer.refresh(context,
|
||||
new_pool.listener.loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, new_pool)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, new_pool)
|
||||
|
||||
def create(self, context, pool):
|
||||
super(PoolManager, self).delete(context, pool)
|
||||
try:
|
||||
self.driver.load_balancer.refresh(context,
|
||||
pool.listener.loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, pool)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, pool)
|
||||
|
||||
def delete(self, context, pool):
|
||||
super(PoolManager, self).delete(context, pool)
|
||||
loadbalancer = pool.listener.loadbalancer
|
||||
pool.listener.default_pool = None
|
||||
try:
|
||||
# just refresh because haproxy is fine if only frontend is listed
|
||||
self.driver.load_balancer.refresh(context, loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, pool)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, pool, delete=True)
|
||||
|
||||
|
||||
class MemberManager(driver_base.BaseMemberManager):
|
||||
|
||||
def _remove_member(self, pool, member_id):
|
||||
index_to_remove = None
|
||||
for index, member in enumerate(pool.members):
|
||||
if member.id == member_id:
|
||||
index_to_remove = index
|
||||
pool.members.pop(index_to_remove)
|
||||
|
||||
def update(self, context, old_member, new_member):
|
||||
super(MemberManager, self).update(context, old_member, new_member)
|
||||
try:
|
||||
self.driver.load_balancer.refresh(
|
||||
context, new_member.pool.listener.loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, new_member)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, new_member)
|
||||
|
||||
def create(self, context, member):
|
||||
super(MemberManager, self).create(context, member)
|
||||
try:
|
||||
self.driver.load_balancer.refresh(
|
||||
context, member.pool.listener.loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, member)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, member)
|
||||
|
||||
def delete(self, context, member):
|
||||
super(MemberManager, self).delete(context, member)
|
||||
self._remove_member(member.pool, member.id)
|
||||
try:
|
||||
self.driver.load_balancer.refresh(
|
||||
context, member.pool.listener.loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, member)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, member, delete=True)
|
||||
|
||||
|
||||
class HealthMonitorManager(driver_base.BaseHealthMonitorManager):
|
||||
|
||||
def update(self, context, old_hm, new_hm):
|
||||
super(HealthMonitorManager, self).update(context, old_hm, new_hm)
|
||||
try:
|
||||
self.driver.load_balancer.refresh(
|
||||
context, new_hm.pool.listener.loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, new_hm)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, new_hm)
|
||||
|
||||
def create(self, context, hm):
|
||||
super(HealthMonitorManager, self).create(context, hm)
|
||||
try:
|
||||
self.driver.load_balancer.refresh(
|
||||
context, hm.pool.listener.loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, hm)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, hm)
|
||||
|
||||
def delete(self, context, hm):
|
||||
super(HealthMonitorManager, self).delete(context, hm)
|
||||
hm.pool.healthmonitor = None
|
||||
try:
|
||||
self.driver.load_balancer.refresh(context,
|
||||
hm.pool.listener.loadbalancer)
|
||||
except Exception as e:
|
||||
self.failed_completion(context, hm)
|
||||
raise e
|
||||
|
||||
self.successful_completion(context, hm, delete=True)
|
||||
LOG.warn(_LW("This path has been deprecated. "
|
||||
"Use neutron_lbaas.drivers.haproxy."
|
||||
"synchronous_namespace_driver instead."))
|
||||
__path__ = synchronous_namespace_driver.__path__
|
||||
|
|
|
|||
|
|
@ -0,0 +1,22 @@
|
|||
# Copyright 2014, Doug Wiegley (dougwig), A10 Networks
|
||||
#
|
||||
# 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 neutron.i18n import _LW
|
||||
from neutron.openstack.common import log as logging
|
||||
from neutron_lbaas.drivers import logging_noop
|
||||
|
||||
LOG = logging.getLogger(__name__)
|
||||
LOG.warn(_LW("This path has been deprecated. "
|
||||
"Use neutron_lbaas.drivers.logging_noop instead."))
|
||||
__path__ = logging_noop.__path__
|
||||
|
|
@ -41,8 +41,8 @@ DB_LB_PLUGIN_CLASS = (
|
|||
"neutron_lbaas.services.loadbalancer."
|
||||
"plugin.LoadBalancerPluginv2"
|
||||
)
|
||||
NOOP_DRIVER_CLASS = ('neutron_lbaas.services.loadbalancer.drivers.'
|
||||
'logging_noop.driver.LoggingNoopLoadBalancerDriver')
|
||||
NOOP_DRIVER_CLASS = ('neutron_lbaas.drivers.logging_noop.driver.'
|
||||
'LoggingNoopLoadBalancerDriver')
|
||||
|
||||
extensions_path = ':'.join(neutron_lbaas.extensions.__path__)
|
||||
|
||||
|
|
|
|||
|
|
@ -23,13 +23,13 @@ from neutron.extensions import portbindings
|
|||
from neutron.plugins.common import constants
|
||||
|
||||
from neutron_lbaas.db.loadbalancer import models
|
||||
from neutron_lbaas.drivers.haproxy \
|
||||
import synchronous_namespace_driver as sync_driver
|
||||
from neutron_lbaas.extensions import loadbalancerv2
|
||||
from neutron_lbaas.services.loadbalancer import constants as lb_const
|
||||
from neutron_lbaas.services.loadbalancer import data_models
|
||||
from neutron_lbaas.services.loadbalancer.drivers.haproxy \
|
||||
import namespace_driver
|
||||
from neutron_lbaas.services.loadbalancer.drivers.haproxy \
|
||||
import synchronous_namespace_driver as sync_driver
|
||||
from neutron_lbaas.tests import base
|
||||
|
||||
|
||||
|
|
@ -15,12 +15,11 @@
|
|||
import mock
|
||||
from neutron import context
|
||||
|
||||
from neutron_lbaas.drivers.logging_noop import driver
|
||||
from neutron_lbaas.services.loadbalancer import data_models
|
||||
from neutron_lbaas.services.loadbalancer.drivers.logging_noop import driver
|
||||
from neutron_lbaas.tests.unit.db.loadbalancer import test_db_loadbalancer
|
||||
|
||||
log_path = ('neutron_lbaas.services.loadbalancer.drivers.'
|
||||
'logging_noop.driver.LOG')
|
||||
log_path = ('neutron_lbaas.drivers.logging_noop.driver.LOG')
|
||||
|
||||
|
||||
class FakeModel(object):
|
||||
|
|
@ -18,9 +18,9 @@ from neutron.api.v2 import attributes
|
|||
from neutron import context as ncontext
|
||||
from neutron.plugins.common import constants
|
||||
|
||||
from neutron_lbaas.drivers import driver_mixins
|
||||
from neutron_lbaas.extensions import loadbalancerv2
|
||||
from neutron_lbaas.services.loadbalancer import constants as lb_const
|
||||
from neutron_lbaas.services.loadbalancer.drivers import driver_mixins
|
||||
from neutron_lbaas.tests.unit.db.loadbalancer import test_db_loadbalancerv2
|
||||
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue