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third_party/gsutil/boto/ec2/elb/healthcheck.py

+# Copyright (c) 2006-2012 Mitch Garnaat http://garnaat.org/
+# Copyright (c) 2012 Amazon.com, Inc. or its affiliates.
+# All Rights Reserved
+#
+# 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.
+
+
+class HealthCheck(object):
+    """
+    Represents an EC2 Access Point Health Check. See
+    :ref:`elb-configuring-a-health-check` for a walkthrough on configuring
+    load balancer health checks.
+    """
+    def __init__(self, access_point=None, interval=30, target=None,
+                 healthy_threshold=3, timeout=5, unhealthy_threshold=5):
+        """
+        :ivar str access_point: The name of the load balancer this
+            health check is associated with.
+        :ivar int interval: Specifies how many seconds there are between
+            health checks.
+        :ivar str target: Determines what to check on an instance. See the
+            Amazon HealthCheck_ documentation for possible Target values.
+
+        .. _HealthCheck: http://docs.amazonwebservices.com/ElasticLoadBalancing/latest/APIReference/API_HealthCheck.html
+        """
+        self.access_point = access_point
+        self.interval = interval
+        self.target = target
+        self.healthy_threshold = healthy_threshold
+        self.timeout = timeout
+        self.unhealthy_threshold = unhealthy_threshold
+
+    def __repr__(self):
+        return 'HealthCheck:%s' % self.target
+
+    def startElement(self, name, attrs, connection):
+        return None
+
+    def endElement(self, name, value, connection):
+        if name == 'Interval':
+            self.interval = int(value)
+        elif name == 'Target':
+            self.target = value
+        elif name == 'HealthyThreshold':
+            self.healthy_threshold = int(value)
+        elif name == 'Timeout':
+            self.timeout = int(value)
+        elif name == 'UnhealthyThreshold':
+            self.unhealthy_threshold = int(value)
+        else:
+            setattr(self, name, value)
+
+    def update(self):
+        """
+        In the case where you have accessed an existing health check on a
+        load balancer, this method applies this instance's health check
+        values to the load balancer it is attached to.
+
+        .. note:: This method will not do anything if the :py:attr:`access_point`
+            attribute isn't set, as is the case with a newly instantiated
+            HealthCheck instance.
+        """
+        if not self.access_point:
+            return
+
+        new_hc = self.connection.configure_health_check(self.access_point,
+                                                        self)
+        self.interval = new_hc.interval
+        self.target = new_hc.target
+        self.healthy_threshold = new_hc.healthy_threshold
+        self.unhealthy_threshold = new_hc.unhealthy_threshold
+        self.timeout = new_hc.timeout