8e76118dee
For the following VPNaaS attributes, ensure that these validation
tests are performed in the extension:
keepalive >= 60 (seconds)
mtu >= 0 (octets)
DPD interval > 0 (seconds)
DPD timeout > 0 (seconds)
Currently, the units for keepalive can only be seconds. If this
changes in the future (e.g. to allow kilobytes units), then the
test for the value will need to be changed.
To correctly test the MTU limits for an IPSec connection, the
protocol must be taken into consideration, which is defined by
the vpnservice object. Because of this dependency, we cannot
validate this in the extension, and will instead, just make
sure the value is positive.
Likewise, the attribute validators cannot ensure that the
DPD timeout is greater than the interval (again, because the
validators can only check the individual attributes one at
a time).
The range validator was modified to allow single ended ranges
for some of these attributes. The range also ensures the value
is an integer.
Companion changes are being made in the CLI code for these limit
changes.
Update: Fixed typo causing tox failure.
bug 1216117
Change-Id: I85d6175d81fbe7d27231aed48fb4691351e0db4c
712 lines
24 KiB
Python
712 lines
24 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright (c) 2012 OpenStack Foundation.
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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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import netaddr
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import re
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from neutron.common import constants
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from neutron.common import exceptions as q_exc
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from neutron.openstack.common import log as logging
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from neutron.openstack.common import uuidutils
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LOG = logging.getLogger(__name__)
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ATTR_NOT_SPECIFIED = object()
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# Defining a constant to avoid repeating string literal in several modules
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SHARED = 'shared'
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# Used by range check to indicate no limit for a bound.
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UNLIMITED = None
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def _verify_dict_keys(expected_keys, target_dict, strict=True):
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"""Allows to verify keys in a dictionary.
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:param expected_keys: A list of keys expected to be present.
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:param target_dict: The dictionary which should be verified.
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:param strict: Specifies whether additional keys are allowed to be present.
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:return: True, if keys in the dictionary correspond to the specification.
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"""
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if not isinstance(target_dict, dict):
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msg = (_("Invalid input. '%(target_dict)s' must be a dictionary "
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"with keys: %(expected_keys)s") %
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{'target_dict': target_dict, 'expected_keys': expected_keys})
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return msg
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expected_keys = set(expected_keys)
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provided_keys = set(target_dict.keys())
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predicate = expected_keys.__eq__ if strict else expected_keys.issubset
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if not predicate(provided_keys):
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msg = (_("Validation of dictionary's keys failed."
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"Expected keys: %(expected_keys)s "
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"Provided keys: %(provided_keys)s") %
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{'expected_keys': expected_keys,
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'provided_keys': provided_keys})
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return msg
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def is_attr_set(attribute):
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return not (attribute is None or attribute is ATTR_NOT_SPECIFIED)
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def _validate_values(data, valid_values=None):
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if data not in valid_values:
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msg = (_("'%(data)s' is not in %(valid_values)s") %
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{'data': data, 'valid_values': valid_values})
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LOG.debug(msg)
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return msg
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def _validate_string(data, max_len=None):
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if not isinstance(data, basestring):
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msg = _("'%s' is not a valid string") % data
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LOG.debug(msg)
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return msg
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if max_len is not None and len(data) > max_len:
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msg = (_("'%(data)s' exceeds maximum length of %(max_len)s") %
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{'data': data, 'max_len': max_len})
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LOG.debug(msg)
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return msg
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def _validate_boolean(data, valid_values=None):
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try:
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convert_to_boolean(data)
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except q_exc.InvalidInput:
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msg = _("'%s' is not a valid boolean value") % data
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LOG.debug(msg)
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return msg
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def _validate_range(data, valid_values=None):
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"""Check that integer value is within a range provided.
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Test is inclusive. Allows either limit to be ignored, to allow
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checking ranges where only the lower or upper limit matter.
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It is expected that the limits provided are valid integers or
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the value None.
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"""
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min_value = valid_values[0]
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max_value = valid_values[1]
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try:
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data = int(data)
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except (ValueError, TypeError):
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msg = _("'%s' is not an integer") % data
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LOG.debug(msg)
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return msg
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if min_value is not UNLIMITED and data < min_value:
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msg = _("'%(data)s' is too small - must be at least "
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"'%(limit)d'") % {'data': data, 'limit': min_value}
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LOG.debug(msg)
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return msg
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if max_value is not UNLIMITED and data > max_value:
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msg = _("'%(data)s' is too large - must be no larger than "
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"'%(limit)d'") % {'data': data, 'limit': max_value}
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LOG.debug(msg)
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return msg
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def _validate_no_whitespace(data):
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"""Validates that input has no whitespace."""
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if len(data.split()) > 1:
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msg = _("'%s' contains whitespace") % data
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LOG.debug(msg)
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raise q_exc.InvalidInput(error_message=msg)
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return data
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def _validate_mac_address(data, valid_values=None):
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try:
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netaddr.EUI(_validate_no_whitespace(data))
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except Exception:
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msg = _("'%s' is not a valid MAC address") % data
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LOG.debug(msg)
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return msg
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def _validate_ip_address(data, valid_values=None):
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try:
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netaddr.IPAddress(_validate_no_whitespace(data))
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except Exception:
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msg = _("'%s' is not a valid IP address") % data
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LOG.debug(msg)
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return msg
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def _validate_ip_pools(data, valid_values=None):
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"""Validate that start and end IP addresses are present.
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In addition to this the IP addresses will also be validated
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"""
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if not isinstance(data, list):
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msg = _("Invalid data format for IP pool: '%s'") % data
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LOG.debug(msg)
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return msg
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expected_keys = ['start', 'end']
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for ip_pool in data:
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msg = _verify_dict_keys(expected_keys, ip_pool)
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if msg:
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LOG.debug(msg)
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return msg
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for k in expected_keys:
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msg = _validate_ip_address(ip_pool[k])
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if msg:
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LOG.debug(msg)
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return msg
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def _validate_fixed_ips(data, valid_values=None):
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if not isinstance(data, list):
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msg = _("Invalid data format for fixed IP: '%s'") % data
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LOG.debug(msg)
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return msg
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ips = []
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for fixed_ip in data:
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if not isinstance(fixed_ip, dict):
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msg = _("Invalid data format for fixed IP: '%s'") % fixed_ip
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LOG.debug(msg)
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return msg
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if 'ip_address' in fixed_ip:
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# Ensure that duplicate entries are not set - just checking IP
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# suffices. Duplicate subnet_id's are legitimate.
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fixed_ip_address = fixed_ip['ip_address']
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if fixed_ip_address in ips:
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msg = _("Duplicate IP address '%s'") % fixed_ip_address
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else:
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msg = _validate_ip_address(fixed_ip_address)
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if msg:
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LOG.debug(msg)
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return msg
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ips.append(fixed_ip_address)
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if 'subnet_id' in fixed_ip:
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msg = _validate_uuid(fixed_ip['subnet_id'])
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if msg:
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LOG.debug(msg)
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return msg
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def _validate_nameservers(data, valid_values=None):
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if not hasattr(data, '__iter__'):
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msg = _("Invalid data format for nameserver: '%s'") % data
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LOG.debug(msg)
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return msg
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ips = []
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for ip in data:
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msg = _validate_ip_address(ip)
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if msg:
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# This may be a hostname
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msg = _validate_regex(ip, HOSTNAME_PATTERN)
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if msg:
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msg = _("'%s' is not a valid nameserver") % ip
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LOG.debug(msg)
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return msg
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if ip in ips:
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msg = _("Duplicate nameserver '%s'") % ip
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LOG.debug(msg)
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return msg
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ips.append(ip)
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def _validate_hostroutes(data, valid_values=None):
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if not isinstance(data, list):
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msg = _("Invalid data format for hostroute: '%s'") % data
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LOG.debug(msg)
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return msg
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expected_keys = ['destination', 'nexthop']
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hostroutes = []
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for hostroute in data:
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msg = _verify_dict_keys(expected_keys, hostroute)
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if msg:
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LOG.debug(msg)
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return msg
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msg = _validate_subnet(hostroute['destination'])
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if msg:
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LOG.debug(msg)
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return msg
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msg = _validate_ip_address(hostroute['nexthop'])
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if msg:
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LOG.debug(msg)
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return msg
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if hostroute in hostroutes:
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msg = _("Duplicate hostroute '%s'") % hostroute
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LOG.debug(msg)
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return msg
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hostroutes.append(hostroute)
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def _validate_ip_address_or_none(data, valid_values=None):
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if data is None:
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return None
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return _validate_ip_address(data, valid_values)
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def _validate_subnet(data, valid_values=None):
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msg = None
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try:
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net = netaddr.IPNetwork(_validate_no_whitespace(data))
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cidr = str(net.cidr)
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if (cidr != data):
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msg = _("'%(data)s' isn't a recognized IP subnet cidr,"
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" '%(cidr)s' is recommended") % {"data": data,
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"cidr": cidr}
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else:
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return
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except Exception:
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msg = _("'%s' is not a valid IP subnet") % data
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if msg:
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LOG.debug(msg)
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return msg
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def _validate_subnet_list(data, valid_values=None):
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if not isinstance(data, list):
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msg = _("'%s' is not a list") % data
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LOG.debug(msg)
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return msg
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if len(set(data)) != len(data):
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msg = _("Duplicate items in the list: '%s'") % ', '.join(data)
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LOG.debug(msg)
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return msg
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for item in data:
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msg = _validate_subnet(item)
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if msg:
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return msg
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def _validate_regex(data, valid_values=None):
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try:
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if re.match(valid_values, data):
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return
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except TypeError:
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pass
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msg = _("'%s' is not a valid input") % data
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LOG.debug(msg)
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return msg
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def _validate_uuid(data, valid_values=None):
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if not uuidutils.is_uuid_like(data):
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msg = _("'%s' is not a valid UUID") % data
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LOG.debug(msg)
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return msg
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def _validate_uuid_or_none(data, valid_values=None):
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if data is not None:
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return _validate_uuid(data)
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def _validate_uuid_list(data, valid_values=None):
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if not isinstance(data, list):
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msg = _("'%s' is not a list") % data
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LOG.debug(msg)
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return msg
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for item in data:
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msg = _validate_uuid(item)
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if msg:
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LOG.debug(msg)
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return msg
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if len(set(data)) != len(data):
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msg = _("Duplicate items in the list: '%s'") % ', '.join(data)
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LOG.debug(msg)
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return msg
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def _validate_dict_item(key, key_validator, data):
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# Find conversion function, if any, and apply it
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conv_func = key_validator.get('convert_to')
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if conv_func:
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data[key] = conv_func(data.get(key))
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# Find validator function
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# TODO(salv-orlando): Structure of dict attributes should be improved
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# to avoid iterating over items
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val_func = val_params = None
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for (k, v) in key_validator.iteritems():
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if k.startswith('type:'):
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# ask forgiveness, not permission
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try:
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val_func = validators[k]
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except KeyError:
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return _("Validator '%s' does not exist.") % k
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val_params = v
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break
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# Process validation
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if val_func:
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return val_func(data.get(key), val_params)
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def _validate_dict(data, key_specs=None):
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if not isinstance(data, dict):
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msg = _("'%s' is not a dictionary") % data
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LOG.debug(msg)
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return msg
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# Do not perform any further validation, if no constraints are supplied
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if not key_specs:
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return
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# Check whether all required keys are present
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required_keys = [key for key, spec in key_specs.iteritems()
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if spec.get('required')]
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if required_keys:
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msg = _verify_dict_keys(required_keys, data, False)
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if msg:
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LOG.debug(msg)
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return msg
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# Perform validation and conversion of all values
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# according to the specifications.
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for key, key_validator in [(k, v) for k, v in key_specs.iteritems()
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if k in data]:
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msg = _validate_dict_item(key, key_validator, data)
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if msg:
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LOG.debug(msg)
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return msg
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def _validate_dict_or_none(data, key_specs=None):
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if data is not None:
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return _validate_dict(data, key_specs)
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def _validate_dict_or_empty(data, key_specs=None):
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if data != {}:
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return _validate_dict(data, key_specs)
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def _validate_dict_or_nodata(data, key_specs=None):
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if data:
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return _validate_dict(data, key_specs)
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def _validate_non_negative(data, valid_values=None):
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try:
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data = int(data)
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except (ValueError, TypeError):
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msg = _("'%s' is not an integer") % data
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LOG.debug(msg)
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return msg
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if data < 0:
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msg = _("'%s' should be non-negative") % data
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LOG.debug(msg)
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return msg
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def convert_to_boolean(data):
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if isinstance(data, basestring):
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val = data.lower()
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if val == "true" or val == "1":
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return True
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if val == "false" or val == "0":
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return False
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elif isinstance(data, bool):
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return data
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elif isinstance(data, int):
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if data == 0:
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return False
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elif data == 1:
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return True
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msg = _("'%s' cannot be converted to boolean") % data
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raise q_exc.InvalidInput(error_message=msg)
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def convert_to_int(data):
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try:
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return int(data)
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except (ValueError, TypeError):
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msg = _("'%s' is not a integer") % data
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raise q_exc.InvalidInput(error_message=msg)
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def convert_kvp_str_to_list(data):
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"""Convert a value of the form 'key=value' to ['key', 'value'].
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:raises: q_exc.InvalidInput if any of the strings are malformed
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(e.g. do not contain a key).
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"""
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kvp = [x.strip() for x in data.split('=', 1)]
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if len(kvp) == 2 and kvp[0]:
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return kvp
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msg = _("'%s' is not of the form <key>=[value]") % data
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raise q_exc.InvalidInput(error_message=msg)
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def convert_kvp_list_to_dict(kvp_list):
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"""Convert a list of 'key=value' strings to a dict.
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:raises: q_exc.InvalidInput if any of the strings are malformed
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(e.g. do not contain a key) or if any
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of the keys appear more than once.
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"""
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if kvp_list == ['True']:
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# No values were provided (i.e. '--flag-name')
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return {}
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kvp_map = {}
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for kvp_str in kvp_list:
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key, value = convert_kvp_str_to_list(kvp_str)
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kvp_map.setdefault(key, set())
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kvp_map[key].add(value)
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return dict((x, list(y)) for x, y in kvp_map.iteritems())
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def convert_none_to_empty_list(value):
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return [] if value is None else value
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def convert_none_to_empty_dict(value):
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return {} if value is None else value
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def convert_to_list(data):
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if data is None:
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return []
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elif hasattr(data, '__iter__'):
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return list(data)
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else:
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return [data]
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HOSTNAME_PATTERN = ("(?=^.{1,254}$)(^(?:(?!\d+\.|-)[a-zA-Z0-9_\-]"
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"{1,63}(?<!-)\.?)+(?:[a-zA-Z]{2,})$)")
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HEX_ELEM = '[0-9A-Fa-f]'
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UUID_PATTERN = '-'.join([HEX_ELEM + '{8}', HEX_ELEM + '{4}',
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HEX_ELEM + '{4}', HEX_ELEM + '{4}',
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HEX_ELEM + '{12}'])
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# Note: In order to ensure that the MAC address is unicast the first byte
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# must be even.
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MAC_PATTERN = "^%s[aceACE02468](:%s{2}){5}$" % (HEX_ELEM, HEX_ELEM)
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# Dictionary that maintains a list of validation functions
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validators = {'type:dict': _validate_dict,
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'type:dict_or_none': _validate_dict_or_none,
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'type:dict_or_empty': _validate_dict_or_empty,
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'type:dict_or_nodata': _validate_dict_or_nodata,
|
|
'type:fixed_ips': _validate_fixed_ips,
|
|
'type:hostroutes': _validate_hostroutes,
|
|
'type:ip_address': _validate_ip_address,
|
|
'type:ip_address_or_none': _validate_ip_address_or_none,
|
|
'type:ip_pools': _validate_ip_pools,
|
|
'type:mac_address': _validate_mac_address,
|
|
'type:nameservers': _validate_nameservers,
|
|
'type:non_negative': _validate_non_negative,
|
|
'type:range': _validate_range,
|
|
'type:regex': _validate_regex,
|
|
'type:string': _validate_string,
|
|
'type:subnet': _validate_subnet,
|
|
'type:subnet_list': _validate_subnet_list,
|
|
'type:uuid': _validate_uuid,
|
|
'type:uuid_or_none': _validate_uuid_or_none,
|
|
'type:uuid_list': _validate_uuid_list,
|
|
'type:values': _validate_values,
|
|
'type:boolean': _validate_boolean}
|
|
|
|
# Define constants for base resource name
|
|
NETWORK = 'network'
|
|
NETWORKS = '%ss' % NETWORK
|
|
PORT = 'port'
|
|
PORTS = '%ss' % PORT
|
|
SUBNET = 'subnet'
|
|
SUBNETS = '%ss' % SUBNET
|
|
# Note: a default of ATTR_NOT_SPECIFIED indicates that an
|
|
# attribute is not required, but will be generated by the plugin
|
|
# if it is not specified. Particularly, a value of ATTR_NOT_SPECIFIED
|
|
# is different from an attribute that has been specified with a value of
|
|
# None. For example, if 'gateway_ip' is ommitted in a request to
|
|
# create a subnet, the plugin will receive ATTR_NOT_SPECIFIED
|
|
# and the default gateway_ip will be generated.
|
|
# However, if gateway_ip is specified as None, this means that
|
|
# the subnet does not have a gateway IP.
|
|
# The following is a short reference for understanding attribute info:
|
|
# default: default value of the attribute (if missing, the attribute
|
|
# becomes mandatory.
|
|
# allow_post: the attribute can be used on POST requests.
|
|
# allow_put: the attribute can be used on PUT requests.
|
|
# validate: specifies rules for validating data in the attribute.
|
|
# convert_to: transformation to apply to the value before it is returned
|
|
# is_visible: the attribute is returned in GET responses.
|
|
# required_by_policy: the attribute is required by the policy engine and
|
|
# should therefore be filled by the API layer even if not present in
|
|
# request body.
|
|
# enforce_policy: the attribute is actively part of the policy enforcing
|
|
# mechanism, ie: there might be rules which refer to this attribute.
|
|
|
|
RESOURCE_ATTRIBUTE_MAP = {
|
|
NETWORKS: {
|
|
'id': {'allow_post': False, 'allow_put': False,
|
|
'validate': {'type:uuid': None},
|
|
'is_visible': True,
|
|
'primary_key': True},
|
|
'name': {'allow_post': True, 'allow_put': True,
|
|
'validate': {'type:string': None},
|
|
'default': '', 'is_visible': True},
|
|
'subnets': {'allow_post': False, 'allow_put': False,
|
|
'default': [],
|
|
'is_visible': True},
|
|
'admin_state_up': {'allow_post': True, 'allow_put': True,
|
|
'default': True,
|
|
'convert_to': convert_to_boolean,
|
|
'is_visible': True},
|
|
'status': {'allow_post': False, 'allow_put': False,
|
|
'is_visible': True},
|
|
'tenant_id': {'allow_post': True, 'allow_put': False,
|
|
'validate': {'type:string': None},
|
|
'required_by_policy': True,
|
|
'is_visible': True},
|
|
SHARED: {'allow_post': True,
|
|
'allow_put': True,
|
|
'default': False,
|
|
'convert_to': convert_to_boolean,
|
|
'is_visible': True,
|
|
'required_by_policy': True,
|
|
'enforce_policy': True},
|
|
},
|
|
PORTS: {
|
|
'id': {'allow_post': False, 'allow_put': False,
|
|
'validate': {'type:uuid': None},
|
|
'is_visible': True,
|
|
'primary_key': True},
|
|
'name': {'allow_post': True, 'allow_put': True, 'default': '',
|
|
'validate': {'type:string': None},
|
|
'is_visible': True},
|
|
'network_id': {'allow_post': True, 'allow_put': False,
|
|
'required_by_policy': True,
|
|
'validate': {'type:uuid': None},
|
|
'is_visible': True},
|
|
'admin_state_up': {'allow_post': True, 'allow_put': True,
|
|
'default': True,
|
|
'convert_to': convert_to_boolean,
|
|
'is_visible': True},
|
|
'mac_address': {'allow_post': True, 'allow_put': False,
|
|
'default': ATTR_NOT_SPECIFIED,
|
|
'validate': {'type:mac_address': None},
|
|
'enforce_policy': True,
|
|
'is_visible': True},
|
|
'fixed_ips': {'allow_post': True, 'allow_put': True,
|
|
'default': ATTR_NOT_SPECIFIED,
|
|
'convert_list_to': convert_kvp_list_to_dict,
|
|
'validate': {'type:fixed_ips': None},
|
|
'enforce_policy': True,
|
|
'is_visible': True},
|
|
'device_id': {'allow_post': True, 'allow_put': True,
|
|
'validate': {'type:string': None},
|
|
'default': '',
|
|
'is_visible': True},
|
|
'device_owner': {'allow_post': True, 'allow_put': True,
|
|
'validate': {'type:string': None},
|
|
'default': '',
|
|
'is_visible': True},
|
|
'tenant_id': {'allow_post': True, 'allow_put': False,
|
|
'validate': {'type:string': None},
|
|
'required_by_policy': True,
|
|
'is_visible': True},
|
|
'status': {'allow_post': False, 'allow_put': False,
|
|
'is_visible': True},
|
|
},
|
|
SUBNETS: {
|
|
'id': {'allow_post': False, 'allow_put': False,
|
|
'validate': {'type:uuid': None},
|
|
'is_visible': True,
|
|
'primary_key': True},
|
|
'name': {'allow_post': True, 'allow_put': True, 'default': '',
|
|
'validate': {'type:string': None},
|
|
'is_visible': True},
|
|
'ip_version': {'allow_post': True, 'allow_put': False,
|
|
'convert_to': convert_to_int,
|
|
'validate': {'type:values': [4, 6]},
|
|
'is_visible': True},
|
|
'network_id': {'allow_post': True, 'allow_put': False,
|
|
'required_by_policy': True,
|
|
'validate': {'type:uuid': None},
|
|
'is_visible': True},
|
|
'cidr': {'allow_post': True, 'allow_put': False,
|
|
'validate': {'type:subnet': None},
|
|
'is_visible': True},
|
|
'gateway_ip': {'allow_post': True, 'allow_put': True,
|
|
'default': ATTR_NOT_SPECIFIED,
|
|
'validate': {'type:ip_address_or_none': None},
|
|
'is_visible': True},
|
|
#TODO(salvatore-orlando): Enable PUT on allocation_pools
|
|
'allocation_pools': {'allow_post': True, 'allow_put': False,
|
|
'default': ATTR_NOT_SPECIFIED,
|
|
'validate': {'type:ip_pools': None},
|
|
'is_visible': True},
|
|
'dns_nameservers': {'allow_post': True, 'allow_put': True,
|
|
'convert_to': convert_none_to_empty_list,
|
|
'default': ATTR_NOT_SPECIFIED,
|
|
'validate': {'type:nameservers': None},
|
|
'is_visible': True},
|
|
'host_routes': {'allow_post': True, 'allow_put': True,
|
|
'convert_to': convert_none_to_empty_list,
|
|
'default': ATTR_NOT_SPECIFIED,
|
|
'validate': {'type:hostroutes': None},
|
|
'is_visible': True},
|
|
'tenant_id': {'allow_post': True, 'allow_put': False,
|
|
'validate': {'type:string': None},
|
|
'required_by_policy': True,
|
|
'is_visible': True},
|
|
'enable_dhcp': {'allow_post': True, 'allow_put': True,
|
|
'default': True,
|
|
'convert_to': convert_to_boolean,
|
|
'is_visible': True},
|
|
SHARED: {'allow_post': False,
|
|
'allow_put': False,
|
|
'default': False,
|
|
'convert_to': convert_to_boolean,
|
|
'is_visible': False,
|
|
'required_by_policy': True,
|
|
'enforce_policy': True},
|
|
}
|
|
}
|
|
|
|
# Identify the attribute used by a resource to reference another resource
|
|
|
|
RESOURCE_FOREIGN_KEYS = {
|
|
NETWORKS: 'network_id'
|
|
}
|
|
|
|
PLURALS = {NETWORKS: NETWORK,
|
|
PORTS: PORT,
|
|
SUBNETS: SUBNET,
|
|
'dns_nameservers': 'dns_nameserver',
|
|
'host_routes': 'host_route',
|
|
'allocation_pools': 'allocation_pool',
|
|
'fixed_ips': 'fixed_ip',
|
|
'extensions': 'extension'}
|
|
EXT_NSES = {}
|
|
|
|
|
|
def get_attr_metadata():
|
|
return {'plurals': PLURALS,
|
|
'xmlns': constants.XML_NS_V20,
|
|
constants.EXT_NS: EXT_NSES}
|