310 lines
11 KiB
Python
310 lines
11 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 abc
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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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import six
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from tacker.common import clients
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from tacker.common import driver_manager
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from tacker import context as t_context
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from tacker.vm.infra_drivers.heat import heat
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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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class VNFMonitor(object):
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"""VNF Monitor."""
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_instance = None
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_hosting_vnfs = dict() # device_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 self._hosting_vnfs.values():
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if hosting_vnf.get('dead', False):
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continue
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self.run_monitor(hosting_vnf)
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@staticmethod
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def to_hosting_vnf(device_dict, action_cb):
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return {
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'id': device_dict['id'],
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'management_ip_addresses': jsonutils.loads(
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device_dict['mgmt_url']),
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'action_cb': action_cb,
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'device': device_dict,
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'monitoring_policy': jsonutils.loads(
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device_dict['attributes']['monitoring_policy'])
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}
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def add_hosting_vnf(self, new_device):
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LOG.debug('Adding host %(id)s, Mgmt IP %(ips)s',
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{'id': new_device['id'],
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'ips': new_device['management_ip_addresses']})
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new_device['boot_at'] = timeutils.utcnow()
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with self._lock:
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self._hosting_vnfs[new_device['id']] = new_device
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def delete_hosting_vnf(self, device_id):
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LOG.debug('deleting device_id %(device_id)s', {'device_id': device_id})
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with self._lock:
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hosting_vnf = self._hosting_vnfs.pop(device_id, None)
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if hosting_vnf:
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LOG.debug('deleting device_id %(device_id)s, Mgmt IP %(ips)s',
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{'device_id': device_id,
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'ips': hosting_vnf['management_ip_addresses']})
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def run_monitor(self, hosting_vnf):
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mgmt_ips = hosting_vnf['management_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'):
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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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if 'mgmt_ip' not in params:
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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['device'],
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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'](hosting_vnf, action)
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def mark_dead(self, device_id):
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self._hosting_vnfs[device_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, device_dict):
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return self._invoke(
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device_dict, monitor=self, device=device_dict)
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def monitor_url(self, device_dict):
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return self._invoke(
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device_dict, monitor=self, device=device_dict)
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def monitor_call(self, driver, device_dict, kwargs):
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return self._invoke(driver,
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device=device_dict, kwargs=kwargs)
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@six.add_metaclass(abc.ABCMeta)
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class ActionPolicy(object):
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@classmethod
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@abc.abstractmethod
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def execute_action(cls, plugin, device_dict):
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pass
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_POLICIES = {}
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@staticmethod
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def register(policy, infra_driver=None):
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def _register(cls):
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cls._POLICIES.setdefault(policy, {})[infra_driver] = cls
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return cls
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return _register
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@classmethod
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def get_policy(cls, policy, device):
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action_clses = cls._POLICIES.get(policy)
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if not action_clses:
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return None
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infra_driver = device['device_template'].get('infra_driver')
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cls = action_clses.get(infra_driver)
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if cls:
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return cls
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return action_clses.get(None)
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@classmethod
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def get_supported_actions(cls):
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return cls._POLICIES.keys()
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@ActionPolicy.register('respawn')
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class ActionRespawn(ActionPolicy):
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@classmethod
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def execute_action(cls, plugin, device_dict):
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LOG.error(_('device %s dead'), device_dict['id'])
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if plugin._mark_device_dead(device_dict['id']):
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plugin._vnf_monitor.mark_dead(device_dict['id'])
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attributes = device_dict['attributes'].copy()
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attributes['dead_device_id'] = device_dict['id']
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new_device = {'attributes': attributes}
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for key in ('tenant_id', 'template_id', 'name'):
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new_device[key] = device_dict[key]
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LOG.debug(_('new_device %s'), new_device)
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# keystone v2.0 specific
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authtoken = CONF.keystone_authtoken
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token = clients.OpenstackClients().auth_token
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context = t_context.get_admin_context()
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context.tenant_name = authtoken.project_name
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context.user_name = authtoken.username
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context.auth_token = token['id']
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context.tenant_id = token['tenant_id']
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context.user_id = token['user_id']
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new_device_dict = plugin.create_device(context,
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{'device': new_device})
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LOG.info(_('respawned new device %s'), new_device_dict['id'])
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@ActionPolicy.register('respawn', 'heat')
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class ActionRespawnHeat(ActionPolicy):
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@classmethod
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def execute_action(cls, plugin, device_dict, auth_attr):
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device_id = device_dict['id']
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LOG.error(_('device %s dead'), device_id)
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if plugin._mark_device_dead(device_dict['id']):
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plugin._vnf_monitor.mark_dead(device_dict['id'])
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attributes = device_dict['attributes']
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config = attributes.get('config')
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LOG.debug(_('device config %s dead'), config)
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failure_count = int(attributes.get('failure_count', '0')) + 1
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failure_count_str = str(failure_count)
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attributes['failure_count'] = failure_count_str
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attributes['dead_instance_id_' + failure_count_str] = device_dict[
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'instance_id']
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new_device_id = device_id + '-RESPAWN-' + failure_count_str
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attributes = device_dict['attributes'].copy()
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attributes['dead_device_id'] = device_id
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new_device = {'id': new_device_id, 'attributes': attributes}
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for key in ('tenant_id', 'template_id', 'name', 'vim_id',
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'placement_attr'):
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new_device[key] = device_dict[key]
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LOG.debug(_('new_device %s'), new_device)
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placement_attr = device_dict.get('placement_attr', {})
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region_name = placement_attr.get('region_name')
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# kill heat stack
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heatclient = heat.HeatClient(auth_attr=auth_attr,
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region_name=region_name)
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heatclient.delete(device_dict['instance_id'])
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# TODO(anyone) set the current request ctxt instead of admin ctxt
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context = t_context.get_admin_context()
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new_device_dict = plugin.create_device_sync(
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context, {'device': new_device})
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LOG.info(_('respawned new device %s'), new_device_dict['id'])
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# ungly hack to keep id unchanged
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dead_device_id = device_id + '-DEAD-' + failure_count_str
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LOG.debug(_('%(dead)s %(new)s %(cur)s'),
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{'dead': dead_device_id,
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'new': new_device_id,
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'cur': device_id})
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plugin.rename_device_id(context, device_id, dead_device_id)
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plugin.rename_device_id(context, new_device_id, device_id)
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LOG.debug('Delete dead device')
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plugin.delete_device(context, dead_device_id)
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new_device_dict['id'] = device_id
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if config:
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new_device_dict.setdefault('attributes', {})['config'] = config
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plugin.config_device(context, new_device_dict)
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plugin.add_device_to_monitor(new_device_dict, auth_attr)
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@ActionPolicy.register('log')
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class ActionLogOnly(ActionPolicy):
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@classmethod
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def execute_action(cls, plugin, device_dict):
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device_id = device_dict['id']
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LOG.error(_('device %s dead'), device_id)
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@ActionPolicy.register('log_and_kill')
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class ActionLogAndKill(ActionPolicy):
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@classmethod
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def execute_action(cls, plugin, device_dict):
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device_id = device_dict['id']
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if plugin._mark_device_dead(device_dict['id']):
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plugin._vnf_monitor.mark_dead(device_dict['id'])
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plugin.delete_device(t_context.get_admin_context(), device_id)
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LOG.error(_('device %s dead'), device_id)
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