111 lines
3.7 KiB
Python
111 lines
3.7 KiB
Python
#
|
|
# 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 heat.common import exception
|
|
from heat.common.i18n import _
|
|
from heat.engine import attributes
|
|
from heat.engine import constraints
|
|
from heat.engine import properties
|
|
from heat.engine.resources.openstack.heat import scaling_policy as heat_sp
|
|
from heat.scaling import scalingutil as sc_util
|
|
|
|
|
|
class AWSScalingPolicy(heat_sp.AutoScalingPolicy):
|
|
PROPERTIES = (
|
|
AUTO_SCALING_GROUP_NAME, SCALING_ADJUSTMENT, ADJUSTMENT_TYPE,
|
|
COOLDOWN, MIN_ADJUSTMENT_STEP,
|
|
) = (
|
|
'AutoScalingGroupName', 'ScalingAdjustment', 'AdjustmentType',
|
|
'Cooldown', 'MinAdjustmentStep',
|
|
)
|
|
|
|
ATTRIBUTES = (
|
|
ALARM_URL,
|
|
) = (
|
|
'AlarmUrl',
|
|
)
|
|
|
|
properties_schema = {
|
|
AUTO_SCALING_GROUP_NAME: properties.Schema(
|
|
properties.Schema.STRING,
|
|
_('AutoScaling group name to apply policy to.'),
|
|
required=True
|
|
),
|
|
SCALING_ADJUSTMENT: properties.Schema(
|
|
properties.Schema.INTEGER,
|
|
_('Size of adjustment.'),
|
|
required=True,
|
|
update_allowed=True
|
|
),
|
|
ADJUSTMENT_TYPE: properties.Schema(
|
|
properties.Schema.STRING,
|
|
_('Type of adjustment (absolute or percentage).'),
|
|
required=True,
|
|
constraints=[
|
|
constraints.AllowedValues(
|
|
[sc_util.CFN_CHANGE_IN_CAPACITY,
|
|
sc_util.CFN_EXACT_CAPACITY,
|
|
sc_util.CFN_PERCENT_CHANGE_IN_CAPACITY]),
|
|
],
|
|
update_allowed=True
|
|
),
|
|
COOLDOWN: properties.Schema(
|
|
properties.Schema.INTEGER,
|
|
_('Cooldown period, in seconds.'),
|
|
update_allowed=True
|
|
),
|
|
MIN_ADJUSTMENT_STEP: properties.Schema(
|
|
properties.Schema.INTEGER,
|
|
_('Minimum number of resources that are added or removed '
|
|
'when the AutoScaling group scales up or down. This can '
|
|
'be used only when specifying PercentChangeInCapacity '
|
|
'for the AdjustmentType property.'),
|
|
constraints=[
|
|
constraints.Range(
|
|
min=0,
|
|
),
|
|
],
|
|
update_allowed=True
|
|
),
|
|
|
|
}
|
|
|
|
attributes_schema = {
|
|
ALARM_URL: attributes.Schema(
|
|
_("A signed url to handle the alarm. (Heat extension)."),
|
|
type=attributes.Schema.STRING
|
|
),
|
|
}
|
|
|
|
def _validate_min_adjustment_step(self):
|
|
adjustment_type = self.properties.get(self.ADJUSTMENT_TYPE)
|
|
adjustment_step = self.properties.get(self.MIN_ADJUSTMENT_STEP)
|
|
if (adjustment_type != sc_util.CFN_PERCENT_CHANGE_IN_CAPACITY
|
|
and adjustment_step is not None):
|
|
raise exception.ResourcePropertyValueDependency(
|
|
prop1=self.MIN_ADJUSTMENT_STEP,
|
|
prop2=self.ADJUSTMENT_TYPE,
|
|
value=sc_util.CFN_PERCENT_CHANGE_IN_CAPACITY)
|
|
|
|
def get_reference_id(self):
|
|
if self.resource_id is not None:
|
|
return str(self._get_ec2_signed_url())
|
|
else:
|
|
return str(self.name)
|
|
|
|
|
|
def resource_mapping():
|
|
return {
|
|
'AWS::AutoScaling::ScalingPolicy': AWSScalingPolicy,
|
|
}
|