OpenStack Orchestration (Heat)
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heat/heat/engine/constraint/common_constraints.py

101 lines
2.8 KiB

#
# 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.
import croniter
import eventlet
import netaddr
import pytz
import six
from oslo_utils import netutils
from oslo_utils import timeutils
from heat.common.i18n import _
from heat.engine import constraints
class TestConstraintDelay(constraints.BaseCustomConstraint):
def validate_with_client(self, client, value):
eventlet.sleep(value)
class IPConstraint(constraints.BaseCustomConstraint):
def validate(self, value, context):
self._error_message = 'Invalid IP address'
return netutils.is_valid_ip(value)
class MACConstraint(constraints.BaseCustomConstraint):
def validate(self, value, context):
self._error_message = 'Invalid MAC address.'
return netaddr.valid_mac(value)
class CIDRConstraint(constraints.BaseCustomConstraint):
def _validate_whitespace(self, data):
self._error_message = ("Invalid net cidr '%s' contains "
"whitespace" % data)
if len(data.split()) > 1:
return False
return True
def validate(self, value, context):
try:
netaddr.IPNetwork(value)
return self._validate_whitespace(value)
except Exception as ex:
self._error_message = 'Invalid net cidr %s ' % six.text_type(ex)
return False
class ISO8601Constraint(object):
def validate(self, value, context):
try:
timeutils.parse_isotime(value)
except Exception:
return False
else:
return True
class CRONExpressionConstraint(constraints.BaseCustomConstraint):
def validate(self, value, context):
if not value:
return True
try:
croniter.croniter(value)
return True
except Exception as ex:
self._error_message = _(
'Invalid CRON expression: %s') % six.text_type(ex)
return False
class TimezoneConstraint(constraints.BaseCustomConstraint):
def validate(self, value, context):
if not value:
return True
try:
pytz.timezone(value)
return True
except Exception as ex:
self._error_message = _(
'Invalid timezone: %s') % six.text_type(ex)
return False