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third_party/gsutil/boto/ec2/autoscale/policy.py

+# Copyright (c) 2009-2010 Reza Lotun http://reza.lotun.name/
+# Copyright (c) 2011 Jann Kleen
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish, dis-
+# tribute, sublicense, and/or sell copies of the Software, and to permit
+# persons to whom the Software is furnished to do so, subject to the fol-
+# lowing conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
+# ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+# SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+# IN THE SOFTWARE.
+
+from boto.resultset import ResultSet
+from boto.ec2.elb.listelement import ListElement
+
+class Alarm(object):
+    def __init__(self, connection=None):
+        self.connection = connection
+        self.name = None
+        self.alarm_arn = None
+
+    def __repr__(self):
+        return 'Alarm:%s' % self.name
+
+    def startElement(self, name, attrs, connection):
+        return None
+
+    def endElement(self, name, value, connection):
+        if name == 'AlarmName':
+            self.name = value
+        elif name == 'AlarmARN':
+            self.alarm_arn = value
+        else:
+            setattr(self, name, value)
+
+
+class AdjustmentType(object):
+    def __init__(self, connection=None):
+        self.connection = connection
+        self.adjustment_types = ListElement([])
+
+    def __repr__(self):
+        return 'AdjustmentType:%s' % self.adjustment_types
+
+    def startElement(self, name, attrs, connection):
+        if name == 'AdjustmentType':
+            return self.adjustment_types
+
+    def endElement(self, name, value, connection):
+        return
+
+
+class MetricCollectionTypes(object):
+    class BaseType(object):
+        arg = ''
+        def __init__(self, connection):
+            self.connection = connection
+            self.val = None
+        def __repr__(self):
+            return '%s:%s' % (self.arg, self.val)
+        def startElement(self, name, attrs, connection):
+            return
+        def endElement(self, name, value, connection):
+            if name == self.arg:
+                self.val = value
+    class Metric(BaseType):
+        arg = 'Metric'
+    class Granularity(BaseType):
+        arg = 'Granularity'
+
+    def __init__(self, connection=None):
+        self.connection = connection
+        self.metrics = []
+        self.granularities = []
+
+    def __repr__(self):
+        return 'MetricCollectionTypes:<%s, %s>' % (self.metrics, self.granularities)
+
+    def startElement(self, name, attrs, connection):
+        if name == 'Granularities':
+            self.granularities = ResultSet([('member', self.Granularity)])
+            return self.granularities
+        elif name == 'Metrics':
+            self.metrics = ResultSet([('member', self.Metric)])
+            return self.metrics
+
+    def endElement(self, name, value, connection):
+        return
+
+
+class ScalingPolicy(object):
+    def __init__(self, connection=None, **kwargs):
+        """
+        Scaling Policy
+
+        :type name: str
+        :param name: Name of scaling policy.
+
+        :type adjustment_type: str
+        :param adjustment_type: Specifies the type of adjustment. Valid values are `ChangeInCapacity`, `ExactCapacity` and `PercentChangeInCapacity`.
+
+        :type as_name: str or int
+        :param as_name: Name or ARN of the Auto Scaling Group.
+
+        :type scaling_adjustment: int
+        :param scaling_adjustment: Value of adjustment (type specified in `adjustment_type`).
+
+        :type cooldown: int
+        :param cooldown: Time (in seconds) before Alarm related Scaling Activities can start after the previous Scaling Activity ends.
+
+        """
+        self.name = kwargs.get('name', None)
+        self.adjustment_type = kwargs.get('adjustment_type', None)
+        self.as_name = kwargs.get('as_name', None)
+        self.scaling_adjustment = kwargs.get('scaling_adjustment', None)
+        self.cooldown = kwargs.get('cooldown', None)
+        self.connection = connection
+
+    def __repr__(self):
+        return 'ScalingPolicy(%s group:%s adjustment:%s)' % (self.name,
+                                                             self.as_name,
+                                                             self.adjustment_type)
+
+    def startElement(self, name, attrs, connection):
+        if name == 'Alarms':
+            self.alarms = ResultSet([('member', Alarm)])
+            return self.alarms
+
+    def endElement(self, name, value, connection):
+        if name == 'PolicyName':
+            self.name = value
+        elif name == 'AutoScalingGroupName':
+            self.as_name = value
+        elif name == 'PolicyARN':
+            self.policy_arn = value
+        elif name == 'ScalingAdjustment':
+            self.scaling_adjustment = int(value)
+        elif name == 'Cooldown':
+            self.cooldown = int(value)
+        elif name == 'AdjustmentType':
+            self.adjustment_type = value
+
+    def delete(self):
+        return self.connection.delete_policy(self.name, self.as_name)
+
+
+class TerminationPolicies(list):
+    def __init__(self, connection=None, **kwargs):
+        pass
+
+    def startElement(self, name, attrs, connection):
+        pass
+
+    def endElement(self, name, value, connection):
+        if name == 'member':
+            self.append(value)