Ansible Networking drivers for ML2
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# Copyright (c) 2018 OpenStack Foundation
# 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.
from oslo_config import cfg
from oslo_config import types
from oslo_log import log as logging
from networking_ansible import constants as c
CONF = cfg.CONF
LOG = logging.getLogger(__name__)
anet_opts = [
cfg.StrOpt('coordination_uri',
default='etcd://127.0.0.1:2379',
help="backend to use for tooz coordination")
]
cfg.CONF.register_opts(anet_opts, group='ml2_ansible')
class Config(object):
def __init__(self):
"""Get inventory list from config files
builds a Network-Runner inventory object
port_map dictionary and
and a mac_map dictionary
according to ansible inventory file yaml definition
http://docs.ansible.com/ansible/latest/user_guide/intro_inventory.html
"""
self.inventory = {}
self.mac_map = {}
self.port_mappings = {}
for conffile in CONF.config_file:
# parse each config file
sections = {}
parser = cfg.ConfigParser(conffile, sections)
try:
parser.parse()
except IOError as e:
LOG.error(str(e))
# filter out sections that begin with the driver's tag
hosts = {k: v for k, v in sections.items()
if k.startswith(c.DRIVER_TAG)}
# remember port mappings and remove from the host list
# mappings come from conf file in format:
# {'compute_host_id': ['sw_name::testport,sw_name2::testport2']}
# the list needs to be removed and a dict needs to be
# returned with a list of tuples of (connection name, port):
# {'compute_host_id': [('testhost', 'testport')]}
if c.PORT_MAPPINGS in hosts:
mappings = hosts[c.PORT_MAPPINGS]
del hosts[c.PORT_MAPPINGS]
def format_and_validate_port_mapping(mapping):
host_id = mapping[0]
ports_lst = []
# ensure the mapping is a valid format
# format the mapping to a tuple of (switch_name, port_name)
ports_split = mapping[1][0].split(',')
for port in ports_split:
port_split = mapping[1][0].split('::')
if len(port_split) == 2:
# switch_name::port_name splits to
# ['switch_name', 'port_name']
ports_lst.append((port_split[0], port_split[1]))
else:
LOG.error(
'{} is not a valid switch_name::port_name '
'formated mapping. It will not be available '
'for look up. Double check that it is using a '
'double colon :: as '
'a separator.'.format(mapping))
return (host_id, ports_lst)
mapped = map(format_and_validate_port_mapping,
mappings.items())
# prune out empty mappings
self.port_mappings = {k: v for k, v in mapped if v}
# munge the oslo_config data removing the device tag and
# turning lists with single item strings into strings
for host in hosts:
dev_id = host.partition(c.DRIVER_TAG)[2]
dev_cfg = {k: v[0] for k, v in hosts[host].items()}
for b in c.BOOLEANS:
if b in dev_cfg:
dev_cfg[b] = types.Boolean()(dev_cfg[b])
self.inventory[dev_id] = dev_cfg
# If mac is defined add it to the mac_map
if 'mac' in dev_cfg:
self.mac_map[dev_cfg['mac'].upper()] = dev_id
LOG.info('Ansible Host List: %s', ', '.join(self.inventory))
LOG.debug('Ansible Port Mappings: %s', self.port_mappings)