885bb4c4ba
blueprint property-schema-conversion Change-Id: Ic44465a1de114ad8165c9d3474f409eb0cc129ad
193 lines
7.4 KiB
Python
193 lines
7.4 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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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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from heat.common import exception
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from heat.engine import watchrule
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from heat.engine import constraints
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from heat.engine import properties
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from heat.engine import resource
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from heat.engine.properties import Properties
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from heat.openstack.common import log as logging
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logger = logging.getLogger(__name__)
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class CloudWatchAlarm(resource.Resource):
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PROPERTIES = (
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COMPARISON_OPERATOR, ALARM_DESCRIPTION, EVALUATION_PERIODS,
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METRIC_NAME, NAMESPACE, PERIOD, STATISTIC, ALARM_ACTIONS,
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OKACTIONS, DIMENSIONS, INSUFFICIENT_DATA_ACTIONS, THRESHOLD,
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UNITS,
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) = (
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'ComparisonOperator', 'AlarmDescription', 'EvaluationPeriods',
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'MetricName', 'Namespace', 'Period', 'Statistic', 'AlarmActions',
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'OKActions', 'Dimensions', 'InsufficientDataActions', 'Threshold',
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'Units',
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)
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properties_schema = {
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COMPARISON_OPERATOR: properties.Schema(
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properties.Schema.STRING,
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_('Operator used to compare the specified Statistic with '
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'Threshold.'),
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constraints=[
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constraints.AllowedValues(['GreaterThanOrEqualToThreshold',
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'GreaterThanThreshold',
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'LessThanThreshold',
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'LessThanOrEqualToThreshold']),
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],
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update_allowed=True
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),
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ALARM_DESCRIPTION: properties.Schema(
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properties.Schema.STRING,
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_('Description for the alarm.'),
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update_allowed=True
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),
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EVALUATION_PERIODS: properties.Schema(
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properties.Schema.STRING,
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_('Number of periods to evaluate over.'),
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update_allowed=True
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),
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METRIC_NAME: properties.Schema(
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properties.Schema.STRING,
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_('Metric name watched by the alarm.')
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),
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NAMESPACE: properties.Schema(
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properties.Schema.STRING,
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_('Namespace for the metric.')
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),
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PERIOD: properties.Schema(
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properties.Schema.STRING,
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_('Period (seconds) to evaluate over.'),
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update_allowed=True
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),
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STATISTIC: properties.Schema(
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properties.Schema.STRING,
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_('Metric statistic to evaluate.'),
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constraints=[
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constraints.AllowedValues(['SampleCount', 'Average', 'Sum',
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'Minimum', 'Maximum']),
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],
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update_allowed=True
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),
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ALARM_ACTIONS: properties.Schema(
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properties.Schema.LIST,
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_('A list of actions to execute when state transitions to alarm.'),
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update_allowed=True
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),
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OKACTIONS: properties.Schema(
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properties.Schema.LIST,
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_('A list of actions to execute when state transitions to ok.'),
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update_allowed=True
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),
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DIMENSIONS: properties.Schema(
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properties.Schema.LIST,
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_('A list of dimensions (arbitrary name/value pairs) associated '
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'with the metric.')
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),
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INSUFFICIENT_DATA_ACTIONS: properties.Schema(
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properties.Schema.LIST,
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_('A list of actions to execute when state transitions to '
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'insufficient-data.'),
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update_allowed=True
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),
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THRESHOLD: properties.Schema(
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properties.Schema.STRING,
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_('Threshold to evaluate against.'),
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update_allowed=True
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),
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UNITS: properties.Schema(
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properties.Schema.STRING,
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_('Unit for the metric.'),
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constraints=[
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constraints.AllowedValues(['Seconds', 'Microseconds',
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'Milliseconds', 'Bytes',
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'Kilobytes', 'Megabytes',
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'Gigabytes', 'Terabytes', 'Bits',
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'Kilobits', 'Megabits',
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'Gigabits', 'Terabits', 'Percent',
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'Count', 'Bytes/Second',
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'Kilobytes/Second',
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'Megabytes/Second',
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'Gigabytes/Second',
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'Terabytes/Second', 'Bits/Second',
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'Kilobits/Second',
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'Megabits/Second',
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'Gigabits/Second',
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'Terabits/Second', 'Count/Second',
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None]),
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],
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update_allowed=True
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),
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}
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strict_dependency = False
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update_allowed_keys = ('Properties',)
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def handle_create(self):
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wr = watchrule.WatchRule(context=self.context,
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watch_name=self.physical_resource_name(),
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rule=self.parsed_template('Properties'),
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stack_id=self.stack.id)
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wr.store()
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def handle_update(self, json_snippet, tmpl_diff, prop_diff):
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# If Properties has changed, update self.properties, so we
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# get the new values during any subsequent adjustment
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if prop_diff:
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self.properties = Properties(self.properties_schema,
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json_snippet.get('Properties', {}),
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self.stack.resolve_runtime_data,
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self.name)
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loader = watchrule.WatchRule.load
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wr = loader(self.context,
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watch_name=self.physical_resource_name())
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wr.rule = self.parsed_template('Properties')
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wr.store()
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def handle_delete(self):
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try:
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wr = watchrule.WatchRule.load(
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self.context, watch_name=self.physical_resource_name())
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wr.destroy()
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except exception.WatchRuleNotFound:
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pass
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def handle_suspend(self):
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wr = watchrule.WatchRule.load(self.context,
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watch_name=self.physical_resource_name())
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wr.state_set(wr.SUSPENDED)
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def handle_resume(self):
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wr = watchrule.WatchRule.load(self.context,
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watch_name=self.physical_resource_name())
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# Just set to NODATA, which will be re-evaluated next periodic task
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wr.state_set(wr.NODATA)
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def FnGetRefId(self):
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return unicode(self.physical_resource_name())
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def physical_resource_name(self):
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return '%s-%s' % (self.stack.name, self.name)
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def resource_mapping():
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return {
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'OS::Heat::CWLiteAlarm': CloudWatchAlarm,
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}
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