78 lines
2.6 KiB
Python
78 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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import six.moves.urllib.error as urlerr
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import six.moves.urllib.request as urlreq
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from tacker.common import log
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from tacker.i18n import _LW
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from tacker.openstack.common import log as logging
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from tacker.vm.monitor_drivers import abstract_driver
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LOG = logging.getLogger(__name__)
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OPTS = [
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cfg.IntOpt('retry', default=5,
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help=_('number of times to retry')),
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cfg.IntOpt('timeout', default=1,
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help=_('number of seconds to wait for a response')),
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cfg.IntOpt('port', default=80,
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help=_('HTTP port number to send request'))
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]
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cfg.CONF.register_opts(OPTS, 'monitor_http_ping')
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class VNFMonitorHTTPPing(abstract_driver.VNFMonitorAbstractDriver):
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def get_type(self):
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return 'http_ping'
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def get_name(self):
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return 'HTTP ping'
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def get_description(self):
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return 'Tacker HTTP Ping Driver for VNF'
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def monitor_url(self, plugin, context, device):
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LOG.debug(_('monitor_url %s'), device)
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return device.get('monitor_url', '')
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def _is_pingable(self, mgmt_ip='', retry=5, timeout=5, port=80, **kwargs):
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"""Checks whether the server is reachable by using urllib.
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Waits for connectivity for `timeout` seconds,
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and if connection refused, it will retry `retry`
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times.
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:param mgmt_ip: IP to check
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:param retry: times to reconnect if connection refused
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:param timeout: seconds to wait for connection
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:param port: port number to check connectivity
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:return: bool - True or False depending on pingability.
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"""
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url = 'http://' + mgmt_ip + ':' + str(port)
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for retry_index in range(int(retry)):
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try:
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urlreq.urlopen(url, timeout=timeout)
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return True
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except urlerr.URLError:
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LOG.warning(_LW('Unable to reach to the url %s'), url)
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return 'failure'
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@log.log
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def monitor_call(self, device, 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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