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89 lines
3.7 KiB
Python
89 lines
3.7 KiB
Python
# Copyright (c) 2006-2012 Mitch Garnaat http://garnaat.org/
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# Copyright (c) 2012 Amazon.com, Inc. or its affiliates.
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# All Rights Reserved
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish, dis-
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# tribute, sublicense, and/or sell copies of the Software, and to permit
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# persons to whom the Software is furnished to do so, subject to the fol-
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# lowing conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
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# ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
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# SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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# IN THE SOFTWARE.
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class HealthCheck(object):
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"""
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Represents an EC2 Access Point Health Check. See
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:ref:`elb-configuring-a-health-check` for a walkthrough on configuring
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load balancer health checks.
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"""
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def __init__(self, access_point=None, interval=30, target=None,
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healthy_threshold=3, timeout=5, unhealthy_threshold=5):
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"""
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:ivar str access_point: The name of the load balancer this
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health check is associated with.
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:ivar int interval: Specifies how many seconds there are between
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health checks.
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:ivar str target: Determines what to check on an instance. See the
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Amazon HealthCheck_ documentation for possible Target values.
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.. _HealthCheck: http://docs.amazonwebservices.com/ElasticLoadBalancing/latest/APIReference/API_HealthCheck.html
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"""
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self.access_point = access_point
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self.interval = interval
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self.target = target
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self.healthy_threshold = healthy_threshold
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self.timeout = timeout
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self.unhealthy_threshold = unhealthy_threshold
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def __repr__(self):
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return 'HealthCheck:%s' % self.target
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def startElement(self, name, attrs, connection):
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return None
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def endElement(self, name, value, connection):
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if name == 'Interval':
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self.interval = int(value)
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elif name == 'Target':
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self.target = value
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elif name == 'HealthyThreshold':
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self.healthy_threshold = int(value)
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elif name == 'Timeout':
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self.timeout = int(value)
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elif name == 'UnhealthyThreshold':
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self.unhealthy_threshold = int(value)
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else:
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setattr(self, name, value)
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def update(self):
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"""
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In the case where you have accessed an existing health check on a
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load balancer, this method applies this instance's health check
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values to the load balancer it is attached to.
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.. note:: This method will not do anything if the :py:attr:`access_point`
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attribute isn't set, as is the case with a newly instantiated
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HealthCheck instance.
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"""
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if not self.access_point:
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return
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new_hc = self.connection.configure_health_check(self.access_point,
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self)
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self.interval = new_hc.interval
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self.target = new_hc.target
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self.healthy_threshold = new_hc.healthy_threshold
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self.unhealthy_threshold = new_hc.unhealthy_threshold
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self.timeout = new_hc.timeout
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