623e76997d
Refactor all the services in such way that they support the new `get_network_details` method instead of the old `get_network_config` method for statically configuring network interfaces through the networkconfig plugin. Change-Id: Idb519935da0d3aee316ad9bc9451f74bc80b12ba
101 lines
3.2 KiB
Python
101 lines
3.2 KiB
Python
# Copyright 2014 Cloudbase Solutions Srl
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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 re
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import six
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from cloudbaseinit.metadata.services import base as service_base
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from cloudbaseinit.openstack.common import log as logging
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LOG = logging.getLogger(__name__)
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NAME = "name"
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MAC = "mac"
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ADDRESS = "address"
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NETMASK = "netmask"
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BROADCAST = "broadcast"
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GATEWAY = "gateway"
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DNSNS = "dnsnameservers"
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# fields of interest (order and regexp)
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FIELDS = {
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NAME: (0, re.compile(r"iface\s+(?P<{}>\S+)"
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r"\s+inet\s+static".format(NAME))),
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MAC: (1, re.compile(r"hwaddress\s+ether\s+"
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r"(?P<{}>\S+)".format(MAC))),
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ADDRESS: (2, re.compile(r"address\s+"
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r"(?P<{}>\S+)".format(ADDRESS))),
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NETMASK: (3, re.compile(r"netmask\s+"
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r"(?P<{}>\S+)".format(NETMASK))),
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BROADCAST: (4, re.compile(r"broadcast\s+"
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r"(?P<{}>\S+)".format(BROADCAST))),
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GATEWAY: (5, re.compile(r"gateway\s+"
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r"(?P<{}>\S+)".format(GATEWAY))),
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DNSNS: (6, re.compile(r"dns-nameservers\s+(?P<{}>.+)".format(DNSNS)))
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}
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IFACE_TEMPLATE = dict.fromkeys(range(len(FIELDS)))
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def _get_field(line):
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for field, (index, regex) in FIELDS.items():
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match = regex.match(line)
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if match:
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return index, match.group(field)
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def _add_nic(iface, nics):
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if not iface:
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return
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details = [iface[key] for key in sorted(iface)]
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LOG.debug("Found new interface: %s", details)
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# each missing detail is marked as None
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nic = service_base.NetworkDetails(*details)
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nics.append(nic)
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def parse(data):
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"""Parse the received content and obtain network details."""
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# TODO(cpoieana): support IPv6 flavors
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if not data or not isinstance(data, six.string_types):
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LOG.error("Invalid debian config to parse:\n%s", data)
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return
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LOG.info("Parsing debian config...\n%s", data)
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nics = [] # list of NetworkDetails objects
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iface = {}
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# take each line and process it
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for line in data.split("\n"):
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line = line.strip()
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if not line or line.startswith("#"):
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continue
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ret = _get_field(line)
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if not ret:
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continue
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# save the detail
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index = ret[0]
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if index == 0:
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# we found a new interface
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_add_nic(iface, nics)
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iface = IFACE_TEMPLATE.copy()
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value = ret[1]
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if index == 1:
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value = value.upper()
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elif index == 6:
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value = value.strip().split()
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iface[index] = value
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# also add the last one
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_add_nic(iface, nics)
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return nics
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