82 lines
2.6 KiB
Python
82 lines
2.6 KiB
Python
#
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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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#
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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 tacker.agent.linux import utils as linux_utils
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from tacker.common import log
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from tacker.vnfm.monitor_drivers import abstract_driver
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LOG = logging.getLogger(__name__)
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OPTS = [
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cfg.StrOpt('count', default='1',
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help=_('Number of ICMP packets to send')),
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cfg.StrOpt('timeout', default='1',
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help=_('Number of seconds to wait for a response')),
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cfg.StrOpt('interval', default='1',
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help=_('Number of seconds to wait between packets'))
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]
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cfg.CONF.register_opts(OPTS, 'monitor_ping')
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def config_opts():
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return [('monitor_ping', OPTS)]
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class VNFMonitorPing(abstract_driver.VNFMonitorAbstractDriver):
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def get_type(self):
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return 'ping'
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def get_name(self):
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return 'ping'
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def get_description(self):
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return 'Tacker VNFMonitor Ping Driver'
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def monitor_url(self, plugin, context, vnf):
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LOG.debug('monitor_url %s', vnf)
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return vnf.get('monitor_url', '')
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def _is_pingable(self, mgmt_ip="", count=5, timeout=1, interval='0.2',
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**kwargs):
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"""Checks whether an IP address is reachable by pinging.
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Use linux utils to execute the ping (ICMP ECHO) command.
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Sends 5 packets with an interval of 0.2 seconds and timeout of 1
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seconds. Runtime error implies unreachability else IP is pingable.
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:param ip: IP to check
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:return: bool - True or string 'failure' depending on pingability.
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"""
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ping_cmd = ['ping',
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'-c', count,
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'-W', timeout,
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'-i', interval,
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mgmt_ip]
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try:
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linux_utils.execute(ping_cmd, check_exit_code=True)
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return True
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except RuntimeError:
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LOG.warning("Cannot ping ip address: %s", mgmt_ip)
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return 'failure'
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@log.log
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def monitor_call(self, vnf, kwargs):
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if not kwargs['mgmt_ip']:
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return
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return self._is_pingable(**kwargs)
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