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OpenStack Study: config.py

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# 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

ml2_cisco_opts = [

cfg.StrOpt('vlan_name_prefix', default='q-',

help=_("VLAN Name prefix")),

cfg.BoolOpt('svi_round_robin', default=False,

help=_("Distribute SVI interfaces over all switches")),

cfg.StrOpt('managed_physical_network', default=None,

help=_("The physical network managed by the switches.")),

]

cfg.CONF.register_opts(ml2_cisco_opts, "ml2_cisco")

# Format for ml2_conf_cisco.ini 'ml2_mech_cisco_nexus' is:

# {('', ''): '', ...}

# Example:

# {('1.1.1.1', 'username'): 'admin',

# ('1.1.1.1', 'password'): 'mySecretPassword',

# ('1.1.1.1', 'compute1'): '1/1', ...}

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class ML2MechCiscoConfig(object):

"""ML2 Mechanism Driver Cisco Configuration class."""

nexus_dict = {}

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def __init__(self):

self._create_ml2_mech_device_cisco_dictionary()

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def _create_ml2_mech_device_cisco_dictionary(self):

"""Create the ML2 device cisco dictionary.

Read data from the ml2_conf_cisco.ini device supported sections.

"""

multi_parser = cfg.MultiConfigParser()

read_ok = multi_parser.read(cfg.CONF.config_file)

if len(read_ok) != len(cfg.CONF.config_file):

raise cfg.Error(_("Some config files were not parsed properly"))

for parsed_file in multi_parser.parsed:

for parsed_item in parsed_file.keys():

dev_id, sep, dev_ip = parsed_item.partition(':')

if dev_id.lower() == 'ml2_mech_cisco_nexus':

for dev_key, value in parsed_file[parsed_item].items():

self.nexus_dict[dev_ip, dev_key] = value[0]