431 lines
17 KiB
Python
431 lines
17 KiB
Python
# Copyright 2015 Intel Corporation.
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# All Rights Reserved.
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#
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import ast
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import copy
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import inspect
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import threading
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import time
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from oslo_config import cfg
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from oslo_log import log as logging
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from oslo_serialization import jsonutils
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from oslo_utils import timeutils
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from tacker._i18n import _
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from tacker.common import driver_manager
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from tacker.common import exceptions
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from tacker import context as t_context
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from tacker.plugins.common import constants
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from tacker.vnfm import utils as vnfm_utils
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LOG = logging.getLogger(__name__)
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CONF = cfg.CONF
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OPTS = [
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cfg.IntOpt('check_intvl',
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default=10,
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help=_("check interval for monitor")),
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]
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CONF.register_opts(OPTS, group='monitor')
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def config_opts():
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return [('monitor', OPTS),
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('tacker', VNFMonitor.OPTS),
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('tacker', VNFAlarmMonitor.OPTS),
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('tacker', VNFAppMonitor.OPTS)]
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class VNFMonitor(object):
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"""VNF Monitor."""
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_instance = None
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_hosting_vnfs = dict() # vnf_id => dict of parameters
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_status_check_intvl = 0
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_lock = threading.RLock()
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OPTS = [
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cfg.ListOpt(
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'monitor_driver', default=['ping', 'http_ping'],
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help=_('Monitor driver to communicate with '
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'Hosting VNF/logical service '
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'instance tacker plugin will use')),
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]
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cfg.CONF.register_opts(OPTS, 'tacker')
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def __new__(cls, boot_wait, check_intvl=None):
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if not cls._instance:
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cls._instance = super(VNFMonitor, cls).__new__(cls)
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return cls._instance
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def __init__(self, boot_wait, check_intvl=None):
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self._monitor_manager = driver_manager.DriverManager(
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'tacker.tacker.monitor.drivers',
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cfg.CONF.tacker.monitor_driver)
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self.boot_wait = boot_wait
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if check_intvl is None:
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check_intvl = cfg.CONF.monitor.check_intvl
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self._status_check_intvl = check_intvl
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LOG.debug('Spawning VNF monitor thread')
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threading.Thread(target=self.__run__).start()
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def __run__(self):
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while(1):
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time.sleep(self._status_check_intvl)
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with self._lock:
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for hosting_vnf in VNFMonitor._hosting_vnfs.values():
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if hosting_vnf.get('dead', False) or (
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hosting_vnf['vnf']['status'] ==
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constants.PENDING_HEAL):
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LOG.debug(
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'monitor skips for DEAD/PENDING_HEAL vnf %s',
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hosting_vnf)
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continue
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try:
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self.run_monitor(hosting_vnf)
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except Exception as ex:
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LOG.exception("Unknown exception: Monitoring failed "
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"for VNF '%s' due to '%s' ",
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hosting_vnf['id'], ex)
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@staticmethod
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def to_hosting_vnf(vnf_dict, action_cb):
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return {
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'id': vnf_dict['id'],
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'mgmt_ip_addresses': jsonutils.loads(
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vnf_dict['mgmt_ip_address']),
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'action_cb': action_cb,
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'vnf': vnf_dict,
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'monitoring_policy': jsonutils.loads(
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vnf_dict['attributes']['monitoring_policy'])
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}
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def add_hosting_vnf(self, new_vnf):
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LOG.debug('Adding host %(id)s, Mgmt IP %(ips)s',
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{'id': new_vnf['id'],
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'ips': new_vnf['mgmt_ip_addresses']})
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new_vnf['boot_at'] = timeutils.utcnow()
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with self._lock:
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VNFMonitor._hosting_vnfs[new_vnf['id']] = new_vnf
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attrib_dict = new_vnf['vnf']['attributes']
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mon_policy_dict = attrib_dict['monitoring_policy']
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evt_details = (("VNF added for monitoring. "
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"mon_policy_dict = %s,") % (mon_policy_dict))
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vnfm_utils.log_events(t_context.get_admin_context(),
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new_vnf['vnf'],
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constants.RES_EVT_MONITOR, evt_details)
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def delete_hosting_vnf(self, vnf_id):
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LOG.debug('deleting vnf_id %(vnf_id)s', {'vnf_id': vnf_id})
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with self._lock:
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hosting_vnf = VNFMonitor._hosting_vnfs.pop(vnf_id, None)
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if hosting_vnf:
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LOG.debug('deleting vnf_id %(vnf_id)s, Mgmt IP %(ips)s',
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{'vnf_id': vnf_id,
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'ips': hosting_vnf['mgmt_ip_addresses']})
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def update_hosting_vnf(self, updated_vnf_dict, evt_details=None):
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with self._lock:
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vnf_to_update = VNFMonitor._hosting_vnfs.get(
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updated_vnf_dict.get('id'))
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if vnf_to_update:
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updated_vnf = copy.deepcopy(updated_vnf_dict)
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vnf_to_update['vnf'] = updated_vnf
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vnf_to_update['mgmt_ip_addresses'] = jsonutils.loads(
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updated_vnf_dict['mgmt_ip_address'])
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if evt_details is not None:
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vnfm_utils.log_events(t_context.get_admin_context(),
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vnf_to_update['vnf'],
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constants.RES_EVT_HEAL,
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evt_details=evt_details)
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def run_monitor(self, hosting_vnf):
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mgmt_ips = hosting_vnf['mgmt_ip_addresses']
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vdupolicies = hosting_vnf['monitoring_policy']['vdus']
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vnf_delay = hosting_vnf['monitoring_policy'].get(
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'monitoring_delay', self.boot_wait)
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for vdu in vdupolicies.keys():
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if hosting_vnf.get('dead') or (
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hosting_vnf['vnf']['status']) == constants.PENDING_HEAL:
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return
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policy = vdupolicies[vdu]
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for driver in policy.keys():
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params = policy[driver].get('monitoring_params', {})
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vdu_delay = params.get('monitoring_delay', vnf_delay)
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if not timeutils.is_older_than(
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hosting_vnf['boot_at'],
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vdu_delay):
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continue
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actions = policy[driver].get('actions', {})
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params['mgmt_ip'] = mgmt_ips[vdu]
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driver_return = self.monitor_call(driver,
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hosting_vnf['vnf'],
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params)
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LOG.debug('driver_return %s', driver_return)
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if driver_return in actions:
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action = actions[driver_return]
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hosting_vnf['action_cb'](action, vdu_name=vdu)
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def mark_dead(self, vnf_id):
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VNFMonitor._hosting_vnfs[vnf_id]['dead'] = True
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def _invoke(self, driver, **kwargs):
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method = inspect.stack()[1][3]
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return self._monitor_manager.invoke(
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driver, method, **kwargs)
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def monitor_get_config(self, vnf_dict):
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return self._invoke(
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vnf_dict, monitor=self, vnf=vnf_dict)
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def monitor_url(self, vnf_dict):
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return self._invoke(
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vnf_dict, monitor=self, vnf=vnf_dict)
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def monitor_call(self, driver, vnf_dict, kwargs):
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return self._invoke(driver,
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vnf=vnf_dict, kwargs=kwargs)
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class VNFAppMonitor(object):
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"""VNF App monitor"""
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OPTS = [
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cfg.ListOpt(
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'app_monitor_driver', default=['zabbix'],
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help=_('App monitoring driver to communicate with '
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'Hosting VNF/logical service '
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'instance tacker plugin will use')),
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]
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cfg.CONF.register_opts(OPTS, 'tacker')
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def __init__(self):
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self._application_monitor_manager = driver_manager.DriverManager(
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'tacker.tacker.app_monitor.drivers',
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cfg.CONF.tacker.app_monitor_driver)
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def _create_app_monitoring_dict(self, dev_attrs, mgmt_ip_address):
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app_policy = 'app_monitoring_policy'
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appmonitoring_dict = ast.literal_eval(dev_attrs[app_policy])
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vdulist = appmonitoring_dict['vdus'].keys()
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for vduname in vdulist:
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temp = ast.literal_eval(mgmt_ip_address)
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appmonitoring_dict['vdus'][vduname]['mgmt_ip'] = temp[vduname]
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return appmonitoring_dict
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def create_app_dict(self, context, vnf_dict):
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dev_attrs = vnf_dict['attributes']
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mgmt_ip_address = vnf_dict['mgmt_ip_address']
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return self._create_app_monitoring_dict(dev_attrs, mgmt_ip_address)
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def _invoke(self, driver, **kwargs):
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method = inspect.stack()[1][3]
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return self._application_monitor_manager.\
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invoke(driver, method, **kwargs)
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def add_to_appmonitor(self, applicationvnfdict, vnf_dict):
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vdunode = applicationvnfdict['vdus'].keys()
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driver = applicationvnfdict['vdus'][vdunode[0]]['name']
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kwargs = applicationvnfdict
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return self._invoke(driver, vnf=vnf_dict, kwargs=kwargs)
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class VNFAlarmMonitor(object):
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"""VNF Alarm monitor"""
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OPTS = [
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cfg.ListOpt(
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'alarm_monitor_driver', default=['ceilometer'],
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help=_('Alarm monitoring driver to communicate with '
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'Hosting VNF/logical service '
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'instance tacker plugin will use')),
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]
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cfg.CONF.register_opts(OPTS, 'tacker')
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# get alarm here
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def __init__(self):
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self._alarm_monitor_manager = driver_manager.DriverManager(
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'tacker.tacker.alarm_monitor.drivers',
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cfg.CONF.tacker.alarm_monitor_driver)
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def update_vnf_with_alarm(self, plugin, context, vnf, policy_dict):
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triggers = policy_dict['triggers']
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alarm_url = dict()
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for trigger_name, trigger_dict in triggers.items():
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params = dict()
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params['vnf_id'] = vnf['id']
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params['mon_policy_name'] = trigger_name
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driver = trigger_dict['event_type']['implementation']
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# TODO(Tung Doan) trigger_dict.get('actions') needs to be used
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policy_action = trigger_dict.get('action')
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if len(policy_action) == 0:
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vnfm_utils.log_events(t_context.get_admin_context(), vnf,
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constants.RES_EVT_MONITOR,
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"Alarm not set: policy action missing")
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return
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# Other backend policies with the construct (policy, action)
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# ex: (SP1, in), (SP1, out)
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def _refactor_backend_policy(bk_policy_name, bk_action_name):
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policy = '%(policy_name)s-%(action_name)s' % {
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'policy_name': bk_policy_name,
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'action_name': bk_action_name}
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return policy
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for index, policy_action_name in enumerate(policy_action):
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filters = {'name': policy_action_name}
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bkend_policies =\
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plugin.get_vnf_policies(context, vnf['id'], filters)
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if bkend_policies:
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bkend_policy = bkend_policies[0]
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if bkend_policy['type'] == constants.POLICY_SCALING:
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cp = trigger_dict['condition'].\
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get('comparison_operator')
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scaling_type = 'out' if cp == 'gt' else 'in'
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policy_action[index] = _refactor_backend_policy(
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policy_action_name, scaling_type)
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# Support multiple action. Ex: respawn % notify
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action_name = '%'.join(policy_action)
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params['mon_policy_action'] = action_name
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alarm_url[trigger_name] =\
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self.call_alarm_url(driver, vnf, params)
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details = "Alarm URL set successfully: %s" % alarm_url
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vnfm_utils.log_events(t_context.get_admin_context(), vnf,
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constants.RES_EVT_MONITOR, details)
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return alarm_url
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def process_alarm_for_vnf(self, vnf, trigger):
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"""call in plugin"""
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params = trigger['params']
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mon_prop = trigger['trigger']
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alarm_dict = dict()
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alarm_dict['alarm_id'] = params['data'].get('alarm_id')
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alarm_dict['status'] = params['data'].get('current')
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trigger_name, trigger_dict = list(mon_prop.items())[0]
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driver = trigger_dict['event_type']['implementation']
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return self.process_alarm(driver, vnf, alarm_dict)
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def _invoke(self, driver, **kwargs):
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method = inspect.stack()[1][3]
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return self._alarm_monitor_manager.invoke(
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driver, method, **kwargs)
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def call_alarm_url(self, driver, vnf_dict, kwargs):
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return self._invoke(driver,
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vnf=vnf_dict, kwargs=kwargs)
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def process_alarm(self, driver, vnf_dict, kwargs):
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return self._invoke(driver,
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vnf=vnf_dict, kwargs=kwargs)
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class VNFReservationAlarmMonitor(VNFAlarmMonitor):
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"""VNF Reservation Alarm monitor"""
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def update_vnf_with_reservation(self, plugin, context, vnf, policy_dict):
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alarm_url = dict()
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def create_alarm_action(action, action_list, scaling_type):
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params = dict()
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params['vnf_id'] = vnf['id']
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params['mon_policy_name'] = action
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driver = 'ceilometer'
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def _refactor_backend_policy(bk_policy_name, bk_action_name):
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policy = '%(policy_name)s%(action_name)s' % {
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'policy_name': bk_policy_name,
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'action_name': bk_action_name}
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return policy
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for index, policy_action_name in enumerate(action_list):
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filters = {'name': policy_action_name}
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bkend_policies = \
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plugin.get_vnf_policies(context, vnf['id'], filters)
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if bkend_policies:
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if constants.POLICY_SCALING in str(bkend_policies[0]):
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action_list[index] = _refactor_backend_policy(
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policy_action_name, scaling_type)
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# Support multiple action. Ex: respawn % notify
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action_name = '%'.join(action_list)
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params['mon_policy_action'] = action_name
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alarm_url[action] = \
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self.call_alarm_url(driver, vnf, params)
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details = "Alarm URL set successfully: %s" % alarm_url
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vnfm_utils.log_events(t_context.get_admin_context(), vnf,
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constants.RES_EVT_MONITOR,
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details)
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before_end_action = policy_dict['reservation']['before_end_actions']
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end_action = policy_dict['reservation']['end_actions']
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start_action = policy_dict['reservation']['start_actions']
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scaling_policies = \
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plugin.get_vnf_policies(
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context, vnf['id'], filters={
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'type': constants.POLICY_SCALING})
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if len(scaling_policies) == 0:
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raise exceptions.VnfPolicyNotFound(
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policy=constants.POLICY_SCALING, vnf_id=vnf['id'])
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for scaling_policy in scaling_policies:
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# validating start_action for scale-out policy action
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if scaling_policy['name'] not in start_action:
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raise exceptions.Invalid(
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'Not a valid template: start_action must contain'
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' %s as scaling-out action' % scaling_policy['name'])
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# validating before_end and end_actions for scale-in policy action
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if scaling_policy['name'] not in before_end_action:
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if scaling_policy['name'] not in end_action:
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raise exceptions.Invalid(
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'Not a valid template:'
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' before_end_action or end_action'
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' should contain scaling policy: %s'
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% scaling_policy['name'])
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for action in constants.RESERVATION_POLICY_ACTIONS:
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scaling_type = "-out" if action == 'start_actions' else "-in"
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create_alarm_action(action, policy_dict[
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'reservation'][action], scaling_type)
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return alarm_url
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def process_alarm_for_vnf(self, vnf, trigger):
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"""call in plugin"""
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params = trigger['params']
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alarm_dict = dict()
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alarm_dict['alarm_id'] = params['data'].get('alarm_id')
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alarm_dict['status'] = params['data'].get('current')
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driver = 'ceilometer'
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return self.process_alarm(driver, vnf, alarm_dict)
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