OpenStack Study: midonet_driver.py

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# vim: tabstop=4 shiftwidth=4 softtabstop=4

# Copyright (C) 2013 Midokura PTE LTD

# All Rights Reserved.

#

# Licensed under the Apache License, Version 2.0 (the "License"); you may

# not use this file except in compliance with the License. You may obtain

# a copy of the License at

#

# http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT

# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the

# License for the specific language governing permissions and limitations

# under the License.

#

# @author: Rossella Sblendido, Midokura Japan KK

# @author: Tomoe Sugihara, Midokura Japan KK

# @author: Ryu Ishimoto, Midokura Japan KK

from neutron.agent.linux import dhcp

from neutron.openstack.common import log as logging

from neutron.plugins.midonet.common import config # noqa

LOG = logging.getLogger(__name__)

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class DhcpNoOpDriver(dhcp.DhcpLocalProcess):

@classmethod

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    def existing_dhcp_networks(cls, conf, root_helper):

        """Return a list of existing networks ids that we have configs for."""

        return []

    @classmethod

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    def check_version(cls):

        """Execute version checks on DHCP server."""

        return float(1.0)

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    def disable(self, retain_port=False):

        """Disable DHCP for this network."""

        if not retain_port:

            self.device_manager.destroy(self.network, self.interface_name)

        self._remove_config_files()

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    def reload_allocations(self):

        """Force the DHCP server to reload the assignment database."""

        pass

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    def spawn_process(self):

        pass