126 lines
5.9 KiB
Python
126 lines
5.9 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 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_schema = {'ComparisonOperator': {'Type': 'String',
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'AllowedValues': ['GreaterThanOrEqualToThreshold',
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'GreaterThanThreshold', 'LessThanThreshold',
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'LessThanOrEqualToThreshold']},
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'AlarmDescription': {'Type': 'String'},
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'EvaluationPeriods': {'Type': 'String'},
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'MetricName': {'Type': 'String'},
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'Namespace': {'Type': 'String'},
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'Period': {'Type': 'String'},
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'Statistic': {'Type': 'String',
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'AllowedValues': ['SampleCount',
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'Average',
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'Sum',
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'Minimum',
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'Maximum']},
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'AlarmActions': {'Type': 'List'},
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'OKActions': {'Type': 'List'},
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'Dimensions': {'Type': 'List'},
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'InsufficientDataActions': {'Type': 'List'},
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'Threshold': {'Type': 'String'},
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'Units': {'Type': 'String',
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'AllowedValues': ['Seconds',
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'Microseconds',
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'Milliseconds',
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'Bytes',
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'Kilobytes',
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'Megabytes',
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'Gigabytes',
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'Terabytes',
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'Bits',
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'Kilobits',
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'Megabits',
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'Gigabits',
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'Terabits',
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'Percent',
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'Count',
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'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',
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'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',
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'Count/Second', None]}}
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strict_dependency = False
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update_allowed_keys = ('Properties',)
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# allow the properties that affect the watch calculation.
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# note: when using in-instance monitoring you can only change the
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# metric name if you re-configure the instance too.
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update_allowed_properties = ('ComparisonOperator', 'AlarmDescription',
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'EvaluationPeriods', 'Period', 'Statistic',
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'AlarmActions', 'OKActions', 'Units'
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'InsufficientDataActions', 'Threshold')
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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.NotFound:
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pass
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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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'AWS::CloudWatch::Alarm': CloudWatchAlarm,
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}
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