9bd1db420e
Scapy packet filtering is slow and blocking. Pcap filtering can be used in same thread, this allows us to use higher timeout for dhcp offer waiting Setup proper logger for dhcp_checker app. ERROR level logs will be redirected to stderr DEBUG level to /var/log/dhcp_checker.log Change-Id: I7d9a0f1b8e3082637bc2474302fc0f7c17e0adb8 Closes-Bug: #1247284
104 lines
3.9 KiB
Python
104 lines
3.9 KiB
Python
# Copyright 2013 Mirantis, Inc.
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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 json
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import logging
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from cliff import command
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from cliff import lister
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from dhcp_checker import api
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LOG = logging.getLogger(__name__)
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class BaseCommand(command.Command):
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"""Base command for all app
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"""
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def get_parser(self, prog_name):
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parser = super(BaseCommand, self).get_parser(prog_name)
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parser.add_argument('--timeout', default=5, type=int,
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help="Provide timeout for each network request")
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parser.add_argument('--repeat', default=2, type=int,
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help="Provide number of repeats for request")
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return parser
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class ListDhcpServers(lister.Lister, BaseCommand):
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"""Show list of dhcp servers on ethernet interfaces.
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"""
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def get_parser(self, prog_name):
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parser = super(ListDhcpServers, self).get_parser(prog_name)
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parser.add_argument(
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'--ifaces', metavar='I', nargs='+',
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help='If no eth provided - will run against all except lo')
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return parser
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def take_action(self, parsed_args):
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LOG.info('Starting dhcp discover for {0}'.format(parsed_args.ifaces))
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res = api.check_dhcp(parsed_args.ifaces,
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timeout=parsed_args.timeout,
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repeat=parsed_args.repeat)
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first = res.next()
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columns = first.keys()
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return columns, [first.values()] + [item.values() for item in res]
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class ListDhcpAssignment(lister.Lister, BaseCommand):
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"""Make dhcp request to servers and receive acknowledgement messages
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"""
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def get_parser(self, prog_name):
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parser = super(ListDhcpAssignment, self).get_parser(prog_name)
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parser.add_argument('iface',
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help='Ethernet interface name')
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parser.add_argument('endpoint',
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help='Endpoint of server or multicast group')
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parser.add_argument('--range_start', dest='range_start',
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help='Start of the range')
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parser.add_argument('--range_end', dest='range_end', default=None,
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help='Start of the range')
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return parser
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def take_action(self, parsed_args):
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res = iter(api.check_dhcp_request(
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parsed_args.iface,
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parsed_args.endpoint,
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parsed_args.range_start,
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parsed_args.range_end, timeout=parsed_args.timeout))
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first = res.next()
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columns = first.keys()
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return columns, [first.values()] + [item.values() for item in res]
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class DhcpWithVlansCheck(lister.Lister, BaseCommand):
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"""Provide iface with list of vlans to check
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If no vlans created - they will be. After creation they won't be deleted.
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"""
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def get_parser(self, prog_name):
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parser = super(DhcpWithVlansCheck, self).get_parser(prog_name)
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parser.add_argument('config',
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help='Ethernet interface name')
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return parser
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def take_action(self, parsed_args):
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res = api.check_dhcp_with_vlans(json.loads(parsed_args.config),
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timeout=parsed_args.timeout,
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repeat=parsed_args.repeat)
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first = res.next()
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columns = first.keys()
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return columns, [first.values()] + [item.values() for item in res]
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