/usr/lib/python2.7/dist-packages/neutron_lbaas/services/loadbalancer/drivers/radware/driver.py is in python-neutron-lbaas 2:8.0.0-0ubuntu1.
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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.
import base64
import copy
import httplib
import netaddr
import threading
import time
import eventlet
eventlet.monkey_patch(thread=True)
from neutron.api.v2 import attributes
from neutron import context as ncontext
from neutron.plugins.common import constants
from oslo_config import cfg
from oslo_log import helpers as log_helpers
from oslo_log import log as logging
from oslo_serialization import jsonutils
from oslo_utils import excutils
from six.moves import queue as Queue
from neutron_lbaas._i18n import _, _LE, _LI, _LW
from neutron_lbaas.db.loadbalancer import loadbalancer_db as lb_db
from neutron_lbaas.extensions import loadbalancer
from neutron_lbaas.services.loadbalancer.drivers import abstract_driver
from neutron_lbaas.services.loadbalancer.drivers.radware \
import exceptions as r_exc
LOG = logging.getLogger(__name__)
RESP_STATUS = 0
RESP_REASON = 1
RESP_STR = 2
RESP_DATA = 3
TEMPLATE_HEADER = {'Content-Type':
'application/vnd.com.radware.vdirect.'
'template-parameters+json'}
PROVISION_HEADER = {'Content-Type':
'application/vnd.com.radware.'
'vdirect.status+json'}
CREATE_SERVICE_HEADER = {'Content-Type':
'application/vnd.com.radware.'
'vdirect.adc-service-specification+json'}
driver_opts = [
cfg.StrOpt('vdirect_address',
help=_('IP address of vDirect server.')),
cfg.StrOpt('ha_secondary_address',
help=_('IP address of secondary vDirect server.')),
cfg.StrOpt('vdirect_user',
default='vDirect',
help=_('vDirect user name.')),
cfg.StrOpt('vdirect_password',
default='radware',
secret=True,
help=_('vDirect user password.')),
cfg.StrOpt('service_adc_type',
default="VA",
help=_('Service ADC type. Default: VA.')),
cfg.StrOpt('service_adc_version',
default="",
help=_('Service ADC version.')),
cfg.BoolOpt('service_ha_pair',
default=False,
help=_('Enables or disables the Service HA pair. '
'Default: False.')),
cfg.IntOpt('service_throughput',
default=1000,
help=_('Service throughput. Default: 1000.')),
cfg.IntOpt('service_ssl_throughput',
default=100,
help=_('Service SSL throughput. Default: 100.')),
cfg.IntOpt('service_compression_throughput',
default=100,
help=_('Service compression throughput. Default: 100.')),
cfg.IntOpt('service_cache',
default=20,
help=_('Size of service cache. Default: 20.')),
cfg.StrOpt('l2_l3_workflow_name',
default='openstack_l2_l3',
help=_('Name of l2_l3 workflow. Default: '
'openstack_l2_l3.')),
cfg.StrOpt('l4_workflow_name',
default='openstack_l4',
help=_('Name of l4 workflow. Default: openstack_l4.')),
cfg.DictOpt('l2_l3_ctor_params',
default={"service": "_REPLACE_",
"ha_network_name": "HA-Network",
"ha_ip_pool_name": "default",
"allocate_ha_vrrp": True,
"allocate_ha_ips": True,
"twoleg_enabled": "_REPLACE_"},
help=_('Parameter for l2_l3 workflow constructor.')),
cfg.DictOpt('l2_l3_setup_params',
default={"data_port": 1,
"data_ip_address": "192.168.200.99",
"data_ip_mask": "255.255.255.0",
"gateway": "192.168.200.1",
"ha_port": 2},
help=_('Parameter for l2_l3 workflow setup.')),
cfg.ListOpt('actions_to_skip',
default=['setup_l2_l3'],
help=_('List of actions that are not pushed to '
'the completion queue.')),
cfg.StrOpt('l4_action_name',
default='BaseCreate',
help=_('Name of the l4 workflow action. '
'Default: BaseCreate.')),
cfg.ListOpt('service_resource_pool_ids',
default=[],
help=_('Resource pool IDs.')),
cfg.IntOpt('service_isl_vlan',
default=-1,
help=_('A required VLAN for the interswitch link to use.')),
cfg.BoolOpt('service_session_mirroring_enabled',
default=False,
help=_('Enable or disable Alteon interswitch link for '
'stateful session failover. Default: False.'))
]
cfg.CONF.register_opts(driver_opts, "radware")
class LoadBalancerDriver(abstract_driver.LoadBalancerAbstractDriver):
"""Radware lbaas driver."""
def __init__(self, plugin):
rad = cfg.CONF.radware
self.plugin = plugin
self.service = {
"haPair": rad.service_ha_pair,
"sessionMirroringEnabled": rad.service_session_mirroring_enabled,
"primary": {
"capacity": {
"throughput": rad.service_throughput,
"sslThroughput": rad.service_ssl_throughput,
"compressionThroughput":
rad.service_compression_throughput,
"cache": rad.service_cache
},
"network": {
"type": "portgroup",
"portgroups": ['DATA_NETWORK']
},
"adcType": rad.service_adc_type,
"acceptableAdc": "Exact"
}
}
if rad.service_resource_pool_ids:
ids = rad.service_resource_pool_ids
self.service['resourcePoolIds'] = [
{'name': id} for id in ids
]
if rad.service_isl_vlan:
self.service['islVlan'] = rad.service_isl_vlan
self.l2_l3_wf_name = rad.l2_l3_workflow_name
self.l4_wf_name = rad.l4_workflow_name
self.l2_l3_ctor_params = rad.l2_l3_ctor_params
self.l2_l3_setup_params = rad.l2_l3_setup_params
self.l4_action_name = rad.l4_action_name
self.actions_to_skip = rad.actions_to_skip
vdirect_address = rad.vdirect_address
sec_server = rad.ha_secondary_address
self.rest_client = vDirectRESTClient(server=vdirect_address,
secondary_server=sec_server,
user=rad.vdirect_user,
password=rad.vdirect_password)
self.queue = Queue.Queue()
self.completion_handler = OperationCompletionHandler(self.queue,
self.rest_client,
plugin)
self.workflow_templates_exists = False
self.completion_handler.setDaemon(True)
self.completion_handler_started = False
def _populate_vip_graph(self, context, vip):
ext_vip = self.plugin.populate_vip_graph(context, vip)
vip_network_id = self._get_vip_network_id(context, ext_vip)
pool_network_id = self._get_pool_network_id(context, ext_vip)
# if VIP and PIP are different, we need an IP address for the PIP
# so create port on PIP's network and use its IP address
if vip_network_id != pool_network_id:
pip_address = self._get_pip(
context,
vip['tenant_id'],
_make_pip_name_from_vip(vip),
pool_network_id,
ext_vip['pool']['subnet_id'])
ext_vip['pip_address'] = pip_address
else:
ext_vip['pip_address'] = vip['address']
ext_vip['vip_network_id'] = vip_network_id
ext_vip['pool_network_id'] = pool_network_id
return ext_vip
def create_vip(self, context, vip):
log_info = {'vip': vip,
'extended_vip': 'NOT_ASSIGNED',
'service_name': 'NOT_ASSIGNED'}
try:
ext_vip = self._populate_vip_graph(context, vip)
service_name = self._get_service(ext_vip)
log_info['extended_vip'] = ext_vip
log_info['service_name'] = service_name
self._create_workflow(
vip['pool_id'], self.l4_wf_name,
{"service": service_name})
self._update_workflow(
vip['pool_id'],
self.l4_action_name, ext_vip, context)
finally:
LOG.debug('vip: %(vip)s, extended_vip: %(extended_vip)s, '
'service_name: %(service_name)s, ',
log_info)
def update_vip(self, context, old_vip, vip):
ext_vip = self._populate_vip_graph(context, vip)
self._update_workflow(
vip['pool_id'], self.l4_action_name,
ext_vip, context, False, lb_db.Vip, vip['id'])
def delete_vip(self, context, vip):
"""Delete a Vip
First delete it from the device. If deletion ended OK
- remove data from DB as well.
If the deletion failed - mark vip with error status in DB
"""
ext_vip = self._populate_vip_graph(context, vip)
params = _translate_vip_object_graph(ext_vip,
self.plugin, context)
ids = params.pop('__ids__')
try:
# get neutron port id associated with the vip (present if vip and
# pip are different) and release it after workflow removed
port_filter = {
'name': [_make_pip_name_from_vip(vip)],
}
ports = self.plugin._core_plugin.get_ports(context,
filters=port_filter)
if ports:
LOG.debug('Retrieved pip nport: %(port)r for vip: %(vip)s',
{'port': ports[0], 'vip': vip['id']})
delete_pip_nport_function = self._get_delete_pip_nports(
context, ports)
else:
delete_pip_nport_function = None
LOG.debug('Found no pip nports associated with vip: %s',
vip['id'])
# removing the WF will cause deletion of the configuration from the
# device
self._remove_workflow(ids, context, delete_pip_nport_function)
except r_exc.RESTRequestFailure:
pool_id = ext_vip['pool_id']
LOG.exception(_LE('Failed to remove workflow %s. '
'Going to set vip to ERROR status'),
pool_id)
self.plugin.update_status(context, lb_db.Vip, ids['vip'],
constants.ERROR)
def _get_delete_pip_nports(self, context, ports):
def _delete_pip_nports(success):
if success:
for port in ports:
try:
self.plugin._core_plugin.delete_port(
context, port['id'])
LOG.debug('pip nport id: %s', port['id'])
except Exception as exception:
# stop exception propagation, nport may have
# been deleted by other means
LOG.warning(_LW('pip nport delete failed: %r'),
exception)
return _delete_pip_nports
def create_pool(self, context, pool):
# nothing to do
pass
def update_pool(self, context, old_pool, pool):
self._handle_pool(context, pool)
def delete_pool(self, context, pool,):
self._handle_pool(context, pool, delete=True)
def _handle_pool(self, context, pool, delete=False):
vip_id = self.plugin.get_pool(context, pool['id']).get('vip_id', None)
if vip_id:
if delete:
raise loadbalancer.PoolInUse(pool_id=pool['id'])
else:
vip = self.plugin.get_vip(context, vip_id)
ext_vip = self._populate_vip_graph(context, vip)
self._update_workflow(
pool['id'], self.l4_action_name,
ext_vip, context, delete, lb_db.Pool, pool['id'])
else:
if delete:
self.plugin._delete_db_pool(context, pool['id'])
else:
# we keep the pool in PENDING_UPDATE
# no point to modify it since it is not connected to vip yet
pass
def create_member(self, context, member):
self._handle_member(context, member)
def update_member(self, context, old_member, member):
self._handle_member(context, member)
def delete_member(self, context, member):
self._handle_member(context, member, delete=True)
def _handle_member(self, context, member, delete=False):
"""Navigate the model. If a Vip is found - activate a bulk WF action.
"""
vip_id = self.plugin.get_pool(
context, member['pool_id']).get('vip_id')
if vip_id:
vip = self.plugin.get_vip(context, vip_id)
ext_vip = self._populate_vip_graph(context, vip)
self._update_workflow(
member['pool_id'], self.l4_action_name,
ext_vip, context,
delete, lb_db.Member, member['id'])
# We have to delete this member but it is not connected to a vip yet
elif delete:
self.plugin._delete_db_member(context, member['id'])
def create_health_monitor(self, context, health_monitor):
# Anything to do here? the hm is not connected to the graph yet
pass
def update_pool_health_monitor(self, context, old_health_monitor,
health_monitor,
pool_id):
self._handle_pool_health_monitor(context, health_monitor, pool_id)
def create_pool_health_monitor(self, context,
health_monitor, pool_id):
self._handle_pool_health_monitor(context, health_monitor, pool_id)
def delete_pool_health_monitor(self, context, health_monitor, pool_id):
self._handle_pool_health_monitor(context, health_monitor, pool_id,
True)
def _handle_pool_health_monitor(self, context, health_monitor,
pool_id, delete=False):
"""Push a graph to vDirect
Navigate the model. Check if a pool is associated to the vip
and push the graph to vDirect
"""
vip_id = self.plugin.get_pool(context, pool_id).get('vip_id', None)
debug_params = {"hm_id": health_monitor['id'], "pool_id": pool_id,
"delete": delete, "vip_id": vip_id}
LOG.debug('_handle_pool_health_monitor. health_monitor = %(hm_id)s '
'pool_id = %(pool_id)s delete = %(delete)s '
'vip_id = %(vip_id)s',
debug_params)
if vip_id:
vip = self.plugin.get_vip(context, vip_id)
ext_vip = self._populate_vip_graph(context, vip)
self._update_workflow(pool_id, self.l4_action_name,
ext_vip, context,
delete, lb_db.PoolMonitorAssociation,
health_monitor['id'])
elif delete:
self.plugin._delete_db_pool_health_monitor(context,
health_monitor['id'],
pool_id)
def stats(self, context, pool_id):
# TODO(avishayb) implement
return {"bytes_in": 0,
"bytes_out": 0,
"active_connections": 0,
"total_connections": 0}
def _get_vip_network_id(self, context, extended_vip):
subnet = self.plugin._core_plugin.get_subnet(
context, extended_vip['subnet_id'])
return subnet['network_id']
def _start_completion_handling_thread(self):
if not self.completion_handler_started:
LOG.info(_LI('Starting operation completion handling thread'))
self.completion_handler.start()
self.completion_handler_started = True
def _get_pool_network_id(self, context, extended_vip):
subnet = self.plugin._core_plugin.get_subnet(
context, extended_vip['pool']['subnet_id'])
return subnet['network_id']
@log_helpers.log_method_call
def _update_workflow(self, wf_name, action,
wf_params, context,
delete=False,
lbaas_entity=None, entity_id=None):
"""Update the WF state. Push the result to a queue for processing."""
if not self.workflow_templates_exists:
self._verify_workflow_templates()
if action not in self.actions_to_skip:
params = _translate_vip_object_graph(wf_params,
self.plugin,
context)
else:
params = wf_params
resource = '/api/workflow/%s/action/%s' % (wf_name, action)
response = _rest_wrapper(self.rest_client.call('POST', resource,
{'parameters': params},
TEMPLATE_HEADER))
LOG.debug('_update_workflow response: %s ', response)
if action not in self.actions_to_skip:
ids = params.pop('__ids__', None)
oper = OperationAttributes(response['uri'],
ids,
lbaas_entity,
entity_id,
delete=delete)
LOG.debug('Pushing operation %s to the queue', oper)
self._start_completion_handling_thread()
self.queue.put_nowait(oper)
def _remove_workflow(self, ids, context, post_remove_function):
wf_name = ids['pool']
LOG.debug('Remove the workflow %s' % wf_name)
resource = '/api/workflow/%s' % (wf_name)
rest_return = self.rest_client.call('DELETE', resource, None, None)
response = _rest_wrapper(rest_return, [204, 202, 404])
if rest_return[RESP_STATUS] == 404:
if post_remove_function:
try:
post_remove_function(True)
LOG.debug('Post-remove workflow function %r completed',
post_remove_function)
except Exception:
with excutils.save_and_reraise_exception():
LOG.exception(_LE('Post-remove workflow function '
'%r failed'), post_remove_function)
self.plugin._delete_db_vip(context, ids['vip'])
else:
oper = OperationAttributes(
response['uri'],
ids,
lb_db.Vip,
ids['vip'],
delete=True,
post_op_function=post_remove_function)
LOG.debug('Pushing operation %s to the queue', oper)
self._start_completion_handling_thread()
self.queue.put_nowait(oper)
def _remove_service(self, service_name):
resource = '/api/service/%s' % (service_name)
_rest_wrapper(self.rest_client.call('DELETE',
resource, None, None),
[202])
def _get_service(self, ext_vip):
"""Get a service name.
if you can't find one,
create a service and create l2_l3 WF.
"""
if not self.workflow_templates_exists:
self._verify_workflow_templates()
if ext_vip['vip_network_id'] != ext_vip['pool_network_id']:
networks_name = '%s_%s' % (ext_vip['vip_network_id'],
ext_vip['pool_network_id'])
self.l2_l3_ctor_params["twoleg_enabled"] = True
else:
networks_name = ext_vip['vip_network_id']
self.l2_l3_ctor_params["twoleg_enabled"] = False
incoming_service_name = 'srv_%s' % (networks_name,)
service_name = self._get_available_service(incoming_service_name)
if not service_name:
LOG.debug(
'Could not find a service named ' + incoming_service_name)
service_name = self._create_service(ext_vip['vip_network_id'],
ext_vip['pool_network_id'],
ext_vip['tenant_id'])
self.l2_l3_ctor_params["service"] = incoming_service_name
wf_name = 'l2_l3_' + networks_name
self._create_workflow(
wf_name, self.l2_l3_wf_name, self.l2_l3_ctor_params)
self._update_workflow(
wf_name, "setup_l2_l3", self.l2_l3_setup_params, None)
else:
LOG.debug('A service named ' + service_name + ' was found.')
return service_name
def _create_service(self, vip_network_id, pool_network_id, tenant_id):
"""create the service and provision it (async)."""
# 1) create the service
service = copy.deepcopy(self.service)
if vip_network_id != pool_network_id:
service_name = 'srv_%s_%s' % (vip_network_id, pool_network_id)
service['primary']['network']['portgroups'] = [vip_network_id,
pool_network_id]
else:
service_name = 'srv_' + vip_network_id
service['primary']['network']['portgroups'] = [vip_network_id]
resource = '/api/service?name=%s&tenant=%s' % (service_name, tenant_id)
response = _rest_wrapper(self.rest_client.call('POST', resource,
service,
CREATE_SERVICE_HEADER), [201])
# 2) provision the service
provision_uri = response['links']['actions']['provision']
_rest_wrapper(self.rest_client.call('POST', provision_uri,
None, PROVISION_HEADER))
return service_name
def _get_available_service(self, service_name):
"""Check if service exists and return its name if it does."""
resource = '/api/service/' + service_name
try:
_rest_wrapper(self.rest_client.call('GET',
resource,
None, None), [200])
except Exception:
return
return service_name
def _workflow_exists(self, pool_id):
"""Check if a WF having the name of the pool_id exists."""
resource = '/api/workflow/' + pool_id
try:
_rest_wrapper(self.rest_client.call('GET',
resource,
None,
None), [200])
except Exception:
return False
return True
def _create_workflow(self, wf_name, wf_template_name,
create_workflow_params=None):
"""Create a WF if it doesn't exists yet."""
if not self.workflow_templates_exists:
self._verify_workflow_templates()
if not self._workflow_exists(wf_name):
if not create_workflow_params:
create_workflow_params = {}
resource = '/api/workflowTemplate/%s?name=%s' % (
wf_template_name, wf_name)
params = {'parameters': create_workflow_params}
response = _rest_wrapper(self.rest_client.call('POST',
resource,
params,
TEMPLATE_HEADER))
LOG.debug('create_workflow response: %s', response)
def _verify_workflow_templates(self):
"""Verify the existence of workflows on vDirect server."""
workflows = {self.l2_l3_wf_name:
False, self.l4_wf_name: False}
resource = '/api/workflowTemplate'
response = _rest_wrapper(self.rest_client.call('GET',
resource,
None,
None), [200])
for wf in workflows.keys():
for wf_template in response:
if wf == wf_template['name']:
workflows[wf] = True
break
for wf, found in workflows.items():
if not found:
raise r_exc.WorkflowMissing(workflow=wf)
self.workflow_templates_exists = True
def _get_pip(self, context, tenant_id, port_name,
network_id, subnet_id):
"""Get proxy IP
Creates or get port on network_id, returns that port's IP
on the subnet_id.
"""
port_filter = {
'name': [port_name],
}
ports = self.plugin._core_plugin.get_ports(context,
filters=port_filter)
if not ports:
# create port, we just want any IP allocated to the port
# based on the network id and subnet_id
port_data = {
'tenant_id': tenant_id,
'name': port_name,
'network_id': network_id,
'mac_address': attributes.ATTR_NOT_SPECIFIED,
'admin_state_up': False,
'device_id': '',
'device_owner': 'neutron:' + constants.LOADBALANCER,
'fixed_ips': [{'subnet_id': subnet_id}]
}
port = self.plugin._core_plugin.create_port(context,
{'port': port_data})
else:
port = ports[0]
ips_on_subnet = [ip for ip in port['fixed_ips']
if ip['subnet_id'] == subnet_id]
if not ips_on_subnet:
raise Exception(_('Could not find or allocate '
'IP address for subnet id %s'),
subnet_id)
else:
return ips_on_subnet[0]['ip_address']
class vDirectRESTClient(object):
"""REST server proxy to Radware vDirect."""
def __init__(self,
server='localhost',
secondary_server=None,
user=None,
password=None,
port=2189,
ssl=True,
timeout=5000,
base_uri=''):
self.server = server
self.secondary_server = secondary_server
self.port = port
self.ssl = ssl
self.base_uri = base_uri
self.timeout = timeout
if user and password:
self.auth = base64.encodestring('%s:%s' % (user, password))
self.auth = self.auth.replace('\n', '')
else:
raise r_exc.AuthenticationMissing()
debug_params = {'server': self.server,
'sec_server': self.secondary_server,
'port': self.port,
'ssl': self.ssl}
LOG.debug('vDirectRESTClient:init server=%(server)s, '
'secondary server=%(sec_server)s, '
'port=%(port)d, ssl=%(ssl)r',
debug_params)
def _flip_servers(self):
LOG.warning(_LW('Fliping servers. Current is: %(server)s, '
'switching to %(secondary)s'),
{'server': self.server,
'secondary': self.secondary_server})
self.server, self.secondary_server = self.secondary_server, self.server
def _recover(self, action, resource, data, headers, binary=False):
if self.server and self.secondary_server:
self._flip_servers()
resp = self._call(action, resource, data,
headers, binary)
return resp
else:
LOG.exception(_LE('REST client is not able to recover '
'since only one vDirect server is '
'configured.'))
return -1, None, None, None
def call(self, action, resource, data, headers, binary=False):
resp = self._call(action, resource, data, headers, binary)
if resp[RESP_STATUS] == -1:
LOG.warning(_LW('vDirect server is not responding (%s).'),
self.server)
return self._recover(action, resource, data, headers, binary)
elif resp[RESP_STATUS] in (301, 307):
LOG.warning(_LW('vDirect server is not active (%s).'),
self.server)
return self._recover(action, resource, data, headers, binary)
else:
return resp
@log_helpers.log_method_call
def _call(self, action, resource, data, headers, binary=False):
if resource.startswith('http'):
uri = resource
else:
uri = self.base_uri + resource
if binary:
body = data
else:
body = jsonutils.dumps(data)
debug_data = 'binary' if binary else body
debug_data = debug_data if debug_data else 'EMPTY'
if not headers:
headers = {'Authorization': 'Basic %s' % self.auth}
else:
headers['Authorization'] = 'Basic %s' % self.auth
conn = None
if self.ssl:
conn = httplib.HTTPSConnection(
self.server, self.port, timeout=self.timeout)
if conn is None:
LOG.error(_LE('vdirectRESTClient: Could not establish HTTPS '
'connection'))
return 0, None, None, None
else:
conn = httplib.HTTPConnection(
self.server, self.port, timeout=self.timeout)
if conn is None:
LOG.error(_LE('vdirectRESTClient: Could not establish HTTP '
'connection'))
return 0, None, None, None
try:
conn.request(action, uri, body, headers)
response = conn.getresponse()
respstr = response.read()
respdata = respstr
try:
respdata = jsonutils.loads(respstr)
except ValueError:
# response was not JSON, ignore the exception
pass
ret = (response.status, response.reason, respstr, respdata)
except Exception as e:
log_dict = {'action': action, 'e': e}
LOG.error(_LE('vdirectRESTClient: %(action)s failure, %(e)r'),
log_dict)
ret = -1, None, None, None
conn.close()
return ret
class OperationAttributes(object):
"""Holds operation attributes.
The parameter 'post_op_function' (if supplied) is a function that takes
one boolean argument, specifying the success of the operation
"""
def __init__(self,
operation_url,
object_graph,
lbaas_entity=None,
entity_id=None,
delete=False,
post_op_function=None):
self.operation_url = operation_url
self.object_graph = object_graph
self.delete = delete
self.lbaas_entity = lbaas_entity
self.entity_id = entity_id
self.creation_time = time.time()
self.post_op_function = post_op_function
def __repr__(self):
attrs = self.__dict__
items = ("%s = %r" % (k, v) for k, v in attrs.items())
return "<%s: {%s}>" % (self.__class__.__name__, ', '.join(items))
class OperationCompletionHandler(threading.Thread):
"""Update DB with operation status or delete the entity from DB."""
def __init__(self, queue, rest_client, plugin):
threading.Thread.__init__(self)
self.queue = queue
self.rest_client = rest_client
self.plugin = plugin
self.stoprequest = threading.Event()
self.opers_to_handle_before_rest = 0
def join(self, timeout=None):
self.stoprequest.set()
super(OperationCompletionHandler, self).join(timeout)
def handle_operation_completion(self, oper):
result = self.rest_client.call('GET',
oper.operation_url,
None,
None)
completed = result[RESP_DATA]['complete']
reason = result[RESP_REASON],
description = result[RESP_STR]
if completed:
# operation is done - update the DB with the status
# or delete the entire graph from DB
success = result[RESP_DATA]['success']
sec_to_completion = time.time() - oper.creation_time
debug_data = {'oper': oper,
'sec_to_completion': sec_to_completion,
'success': success}
LOG.debug('Operation %(oper)s is completed after '
'%(sec_to_completion)d sec '
'with success status: %(success)s :',
debug_data)
db_status = None
if not success:
# failure - log it and set the return ERROR as DB state
if reason or description:
msg = 'Reason:%s. Description:%s' % (reason, description)
else:
msg = "unknown"
error_params = {"operation": oper, "msg": msg}
LOG.error(_LE('Operation %(operation)s failed. Reason: '
'%(msg)s'),
error_params)
db_status = constants.ERROR
else:
if oper.delete:
_remove_object_from_db(self.plugin, oper)
else:
db_status = constants.ACTIVE
if db_status:
_update_vip_graph_status(self.plugin, oper, db_status)
OperationCompletionHandler._run_post_op_function(success, oper)
return completed
def run(self):
while not self.stoprequest.isSet():
try:
oper = self.queue.get(timeout=1)
# Get the current queue size (N) and set the counter with it.
# Handle N operations with no intermission.
# Once N operations handles, get the size again and repeat.
if self.opers_to_handle_before_rest <= 0:
self.opers_to_handle_before_rest = self.queue.qsize() + 1
LOG.debug('Operation consumed from the queue: %s', oper)
# check the status - if oper is done: update the db ,
# else push the oper again to the queue
if not self.handle_operation_completion(oper):
LOG.debug('Operation %s is not completed yet..', oper)
# Not completed - push to the queue again
self.queue.put_nowait(oper)
self.queue.task_done()
self.opers_to_handle_before_rest -= 1
# Take one second rest before start handling
# new operations or operations handled before
if self.opers_to_handle_before_rest <= 0:
time.sleep(1)
except Queue.Empty:
continue
except Exception:
m = _("Exception was thrown inside OperationCompletionHandler")
LOG.exception(m)
@staticmethod
def _run_post_op_function(success, oper):
if oper.post_op_function:
log_data = {'func': oper.post_op_function, 'oper': oper}
try:
oper.post_op_function(success)
LOG.debug('Post-operation function %(func)r completed '
'after operation %(oper)r',
log_data)
except Exception:
with excutils.save_and_reraise_exception():
LOG.exception(_LE('Post-operation function %(func)r '
'failed after operation %(oper)r'),
log_data)
def _rest_wrapper(response, success_codes=None):
"""Wrap a REST call and make sure a valid status is returned."""
success_codes = success_codes or [202]
if not response:
raise r_exc.RESTRequestFailure(
status=-1,
reason="Unknown",
description="Unknown",
success_codes=success_codes
)
elif response[RESP_STATUS] not in success_codes:
raise r_exc.RESTRequestFailure(
status=response[RESP_STATUS],
reason=response[RESP_REASON],
description=response[RESP_STR],
success_codes=success_codes
)
else:
return response[RESP_DATA]
def _make_pip_name_from_vip(vip):
"""Standard way of making PIP name based on VIP ID."""
return 'pip_' + vip['id']
def _update_vip_graph_status(plugin, oper, status):
"""Update the status
Of all the Vip object graph
or a specific entity in the graph.
"""
ctx = ncontext.get_admin_context()
LOG.debug('_update: %s ', oper)
if oper.lbaas_entity == lb_db.PoolMonitorAssociation:
plugin.update_pool_health_monitor(ctx,
oper.entity_id,
oper.object_graph['pool'],
status)
elif oper.entity_id:
plugin.update_status(ctx,
oper.lbaas_entity,
oper.entity_id,
status)
else:
_update_vip_graph_status_cascade(plugin,
oper.object_graph,
ctx, status)
def _update_vip_graph_status_cascade(plugin, ids, ctx, status):
plugin.update_status(ctx,
lb_db.Vip,
ids['vip'],
status)
plugin.update_status(ctx,
lb_db.Pool,
ids['pool'],
status)
for member_id in ids['members']:
plugin.update_status(ctx,
lb_db.Member,
member_id,
status)
for hm_id in ids['health_monitors']:
plugin.update_pool_health_monitor(ctx,
hm_id,
ids['pool'],
status)
def _remove_object_from_db(plugin, oper):
"""Remove a specific entity from db."""
LOG.debug('_remove_object_from_db %s', oper)
ctx = ncontext.get_admin_context()
if oper.lbaas_entity == lb_db.PoolMonitorAssociation:
plugin._delete_db_pool_health_monitor(ctx,
oper.entity_id,
oper.object_graph['pool'])
elif oper.lbaas_entity == lb_db.Member:
plugin._delete_db_member(ctx, oper.entity_id)
elif oper.lbaas_entity == lb_db.Vip:
plugin._delete_db_vip(ctx, oper.entity_id)
elif oper.lbaas_entity == lb_db.Pool:
plugin._delete_db_pool(ctx, oper.entity_id)
else:
raise r_exc.UnsupportedEntityOperation(
operation='Remove from DB', entity=oper.lbaas_entity
)
TRANSLATION_DEFAULTS = {'session_persistence_type': 'none',
'session_persistence_cookie_name': 'none',
'url_path': '/',
'http_method': 'GET',
'expected_codes': '200',
'subnet': '255.255.255.255',
'mask': '255.255.255.255',
'gw': '255.255.255.255',
}
VIP_PROPERTIES = ['address', 'protocol_port', 'protocol', 'connection_limit',
'admin_state_up', 'session_persistence_type',
'session_persistence_cookie_name']
POOL_PROPERTIES = ['protocol', 'lb_method', 'admin_state_up']
MEMBER_PROPERTIES = ['address', 'protocol_port', 'weight', 'admin_state_up',
'subnet', 'mask', 'gw']
HEALTH_MONITOR_PROPERTIES = ['type', 'delay', 'timeout', 'max_retries',
'admin_state_up', 'url_path', 'http_method',
'expected_codes', 'id']
def _translate_vip_object_graph(extended_vip, plugin, context):
"""Translate the extended vip
translate to a structure that can be
understood by the workflow.
"""
def _create_key(prefix, property_name):
return prefix + '_' + property_name + '_array'
def _trans_prop_name(prop_name):
if prop_name == 'id':
return 'uuid'
else:
return prop_name
def get_ids(extended_vip):
ids = {}
ids['vip'] = extended_vip['id']
ids['pool'] = extended_vip['pool']['id']
ids['members'] = [m['id'] for m in extended_vip['members']]
ids['health_monitors'] = [
hm['id'] for hm in extended_vip['health_monitors']
]
return ids
trans_vip = {}
LOG.debug('Vip graph to be translated: %s', extended_vip)
for vip_property in VIP_PROPERTIES:
trans_vip['vip_' + vip_property] = extended_vip.get(
vip_property, TRANSLATION_DEFAULTS.get(vip_property))
for pool_property in POOL_PROPERTIES:
trans_vip['pool_' + pool_property] = extended_vip[
'pool'][pool_property]
for member_property in MEMBER_PROPERTIES:
trans_vip[_create_key('member', member_property)] = []
two_leg = (extended_vip['pip_address'] != extended_vip['address'])
if two_leg:
pool_subnet = plugin._core_plugin.get_subnet(
context, extended_vip['pool']['subnet_id'])
for member in extended_vip['members']:
if member['status'] != constants.PENDING_DELETE:
if (two_leg and netaddr.IPAddress(member['address'])
not in netaddr.IPNetwork(pool_subnet['cidr'])):
member_ports = plugin._core_plugin.get_ports(
context,
filters={'fixed_ips': {'ip_address': [member['address']]},
'tenant_id': [extended_vip['tenant_id']]})
if len(member_ports) == 1:
member_subnet = plugin._core_plugin.get_subnet(
context,
member_ports[0]['fixed_ips'][0]['subnet_id'])
member_network = netaddr.IPNetwork(member_subnet['cidr'])
member['subnet'] = str(member_network.network)
member['mask'] = str(member_network.netmask)
else:
member['subnet'] = member['address']
member['gw'] = pool_subnet['gateway_ip']
for member_property in MEMBER_PROPERTIES:
trans_vip[_create_key('member', member_property)].append(
member.get(member_property,
TRANSLATION_DEFAULTS.get(member_property)))
for hm_property in HEALTH_MONITOR_PROPERTIES:
trans_vip[
_create_key('hm', _trans_prop_name(hm_property))] = []
for hm in extended_vip['health_monitors']:
hm_pool = plugin.get_pool_health_monitor(context,
hm['id'],
extended_vip['pool']['id'])
if hm_pool['status'] != constants.PENDING_DELETE:
for hm_property in HEALTH_MONITOR_PROPERTIES:
value = hm.get(hm_property,
TRANSLATION_DEFAULTS.get(hm_property))
trans_vip[_create_key('hm',
_trans_prop_name(hm_property))].append(value)
ids = get_ids(extended_vip)
trans_vip['__ids__'] = ids
if 'pip_address' in extended_vip:
trans_vip['pip_address'] = extended_vip['pip_address']
LOG.debug('Translated Vip graph: %s', trans_vip)
return trans_vip
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