115 lines
4.0 KiB
Python
Executable File
115 lines
4.0 KiB
Python
Executable File
#!/usr/bin/env python
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2010 United States Government as represented by the
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# Administrator of the National Aeronautics and Space Administration.
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# All Rights Reserved.
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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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"""
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Handle lease database updates from DHCP servers.
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"""
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import logging
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import os
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import sys
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#TODO(joshua): there is concern that the user dnsmasq runs under will not
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# have nova in the path. This should be verified and if it is
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# not true the ugly line below can be removed
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sys.path.append(os.path.abspath(os.path.join(__file__, "../../")))
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from nova import flags
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from nova import rpc
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from nova import utils
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from nova.network import linux_net
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from nova.network import service
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from nova import datastore # for redis_db flag
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FLAGS = flags.FLAGS
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def add_lease(_mac, ip, _hostname, _interface):
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"""Set the IP that was assigned by the DHCP server."""
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if FLAGS.fake_rabbit:
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logging.debug("leasing_ip")
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from nova import models
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print models.FixedIp.count()
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print models.Network.count()
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print FLAGS.sql_connection
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service.VlanNetworkService().lease_ip(ip)
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else:
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rpc.cast("%s.%s" % (FLAGS.network_topic, FLAGS.node_name),
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{"method": "lease_ip",
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"args": {"fixed_ip_str": ip}})
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def old_lease(_mac, _ip, _hostname, _interface):
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"""Do nothing, just an old lease update."""
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logging.debug("Adopted old lease or got a change of mac/hostname")
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def del_lease(_mac, ip, _hostname, _interface):
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"""Called when a lease expires."""
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if FLAGS.fake_rabbit:
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logging.debug("releasing_ip")
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service.VlanNetworkService().release_ip(ip)
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else:
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rpc.cast("%s.%s" % (FLAGS.network_topic, FLAGS.node_name),
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{"method": "release_ip",
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"args": {"fixed_ip_str": ip}})
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def init_leases(interface):
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"""Get the list of hosts for an interface."""
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network = service.get_network_by_interface(interface)
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return linux_net.get_dhcp_hosts(network)
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def main():
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"""Parse environment and arguments and call the approproate action."""
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flagfile = os.environ.get('FLAGFILE', FLAGS.dhcpbridge_flagfile)
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utils.default_flagfile(flagfile)
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argv = FLAGS(sys.argv)
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interface = os.environ.get('DNSMASQ_INTERFACE', 'br0')
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if int(os.environ.get('TESTING', '0')):
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FLAGS.fake_rabbit = True
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FLAGS.redis_db = 8
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FLAGS.network_size = 16
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FLAGS.connection_type = 'fake'
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FLAGS.fake_network = True
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FLAGS.auth_driver = 'nova.auth.ldapdriver.FakeLdapDriver'
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FLAGS.num_networks = 5
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path = os.path.abspath(os.path.join(os.path.dirname(__file__),
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'..',
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'_trial_temp',
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'nova.sqlite'))
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print path
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FLAGS.sql_connection = 'sqlite:///%s' % path
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#FLAGS.sql_connection = 'mysql://root@localhost/test'
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action = argv[1]
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if action in ['add', 'del', 'old']:
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mac = argv[2]
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ip = argv[3]
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hostname = argv[4]
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logging.debug("Called %s for mac %s with ip %s and "
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"hostname %s on interface %s",
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action, mac, ip, hostname, interface)
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globals()[action + '_lease'](mac, ip, hostname, interface)
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else:
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print init_leases(interface)
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if __name__ == "__main__":
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main()
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