Mercurial > repos > shellac > guppy_basecaller

annotate env/lib/python3.7/site-packages/boto/ec2/elb/loadbalancer.py @ 0:26e78fe6e8c4 draft

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"planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
author shellac
date Sat, 02 May 2020 07:14:21 -0400
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1 # Copyright (c) 2006-2012 Mitch Garnaat http://garnaat.org/
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2 # Copyright (c) 2012 Amazon.com, Inc. or its affiliates. All Rights Reserved
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3 #
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4 # Permission is hereby granted, free of charge, to any person obtaining a
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5 # copy of this software and associated documentation files (the
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6 # "Software"), to deal in the Software without restriction, including
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7 # without limitation the rights to use, copy, modify, merge, publish, dis-
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8 # tribute, sublicense, and/or sell copies of the Software, and to permit
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9 # persons to whom the Software is furnished to do so, subject to the fol-
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10 # lowing conditions:
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11 #
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12 # The above copyright notice and this permission notice shall be included
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13 # in all copies or substantial portions of the Software.
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14 #
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15 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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16 # OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
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17 # ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
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18 # SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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19 # WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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20 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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21 # IN THE SOFTWARE.
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22
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23 from boto.ec2.elb.healthcheck import HealthCheck
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24 from boto.ec2.elb.listener import Listener
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25 from boto.ec2.elb.listelement import ListElement
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26 from boto.ec2.elb.policies import Policies, OtherPolicy
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27 from boto.ec2.elb.securitygroup import SecurityGroup
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28 from boto.ec2.instanceinfo import InstanceInfo
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29 from boto.resultset import ResultSet
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30 from boto.compat import six
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31
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32
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33 class Backend(object):
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34 """Backend server description"""
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35
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36 def __init__(self, connection=None):
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37 self.connection = connection
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38 self.instance_port = None
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39 self.policies = None
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40
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41 def __repr__(self):
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42 return 'Backend(%r:%r)' % (self.instance_port, self.policies)
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43
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44 def startElement(self, name, attrs, connection):
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45 if name == 'PolicyNames':
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46 self.policies = ResultSet([('member', OtherPolicy)])
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47 return self.policies
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48
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49 def endElement(self, name, value, connection):
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50 if name == 'InstancePort':
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51 self.instance_port = int(value)
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52 return
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53
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54
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55 class LoadBalancerZones(object):
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56 """
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57 Used to collect the zones for a Load Balancer when enable_zones
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58 or disable_zones are called.
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59 """
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60 def __init__(self, connection=None):
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61 self.connection = connection
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62 self.zones = ListElement()
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63
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64 def startElement(self, name, attrs, connection):
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65 if name == 'AvailabilityZones':
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66 return self.zones
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67
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68 def endElement(self, name, value, connection):
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69 pass
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70
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71
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72 class LoadBalancer(object):
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73 """
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74 Represents an EC2 Load Balancer.
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75 """
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76
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77 def __init__(self, connection=None, name=None, endpoints=None):
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78 """
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79 :ivar boto.ec2.elb.ELBConnection connection: The connection this load
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80 balancer was instance was instantiated from.
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81 :ivar list listeners: A list of tuples in the form of
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82 ``(<Inbound port>, <Outbound port>, <Protocol>)``
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83 :ivar boto.ec2.elb.healthcheck.HealthCheck health_check: The health
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84 check policy for this load balancer.
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85 :ivar boto.ec2.elb.policies.Policies policies: Cookie stickiness and
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86 other policies.
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87 :ivar str name: The name of the Load Balancer.
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88 :ivar str dns_name: The external DNS name for the balancer.
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89 :ivar str created_time: A date+time string showing when the
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90 load balancer was created.
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91 :ivar list instances: A list of :py:class:`boto.ec2.instanceinfo.InstanceInfo`
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92 instances, representing the EC2 instances this load balancer is
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93 distributing requests to.
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94 :ivar list availability_zones: The availability zones this balancer
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95 covers.
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96 :ivar str canonical_hosted_zone_name: Current CNAME for the balancer.
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97 :ivar str canonical_hosted_zone_name_id: The Route 53 hosted zone
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98 ID of this balancer. Needed when creating an Alias record in a
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99 Route 53 hosted zone.
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100 :ivar boto.ec2.elb.securitygroup.SecurityGroup source_security_group:
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101 The security group that you can use as part of your inbound rules
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102 for your load balancer back-end instances to disallow traffic
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103 from sources other than your load balancer.
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104 :ivar list subnets: A list of subnets this balancer is on.
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105 :ivar list security_groups: A list of additional security groups that
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106 have been applied.
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107 :ivar str vpc_id: The ID of the VPC that this ELB resides within.
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108 :ivar list backends: A list of :py:class:`boto.ec2.elb.loadbalancer.Backend
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109 back-end server descriptions.
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110 """
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111 self.connection = connection
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112 self.name = name
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113 self.listeners = None
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114 self.health_check = None
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115 self.policies = None
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116 self.dns_name = None
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117 self.created_time = None
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118 self.instances = None
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119 self.availability_zones = ListElement()
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120 self.canonical_hosted_zone_name = None
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121 self.canonical_hosted_zone_name_id = None
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122 self.source_security_group = None
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123 self.subnets = ListElement()
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124 self.security_groups = ListElement()
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125 self.vpc_id = None
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126 self.scheme = None
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127 self.backends = None
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128 self._attributes = None
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129
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130 def __repr__(self):
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131 return 'LoadBalancer:%s' % self.name
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132
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133 def startElement(self, name, attrs, connection):
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134 if name == 'HealthCheck':
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135 self.health_check = HealthCheck(self)
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136 return self.health_check
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137 elif name == 'ListenerDescriptions':
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138 self.listeners = ResultSet([('member', Listener)])
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139 return self.listeners
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140 elif name == 'AvailabilityZones':
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141 return self.availability_zones
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142 elif name == 'Instances':
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143 self.instances = ResultSet([('member', InstanceInfo)])
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144 return self.instances
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145 elif name == 'Policies':
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146 self.policies = Policies(self)
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147 return self.policies
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148 elif name == 'SourceSecurityGroup':
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149 self.source_security_group = SecurityGroup()
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150 return self.source_security_group
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151 elif name == 'Subnets':
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152 return self.subnets
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153 elif name == 'SecurityGroups':
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154 return self.security_groups
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155 elif name == 'VPCId':
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156 pass
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157 elif name == "BackendServerDescriptions":
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158 self.backends = ResultSet([('member', Backend)])
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159 return self.backends
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160 else:
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161 return None
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162
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163 def endElement(self, name, value, connection):
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164 if name == 'LoadBalancerName':
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165 self.name = value
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166 elif name == 'DNSName':
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167 self.dns_name = value
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168 elif name == 'CreatedTime':
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169 self.created_time = value
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170 elif name == 'InstanceId':
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171 self.instances.append(value)
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172 elif name == 'CanonicalHostedZoneName':
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173 self.canonical_hosted_zone_name = value
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174 elif name == 'CanonicalHostedZoneNameID':
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175 self.canonical_hosted_zone_name_id = value
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176 elif name == 'VPCId':
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177 self.vpc_id = value
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178 elif name == 'Scheme':
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179 self.scheme = value
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180 else:
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181 setattr(self, name, value)
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182
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183 def enable_zones(self, zones):
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184 """
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185 Enable availability zones to this Access Point.
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186 All zones must be in the same region as the Access Point.
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187
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188 :type zones: string or List of strings
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189 :param zones: The name of the zone(s) to add.
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190
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191 """
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192 if isinstance(zones, six.string_types):
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193 zones = [zones]
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194 new_zones = self.connection.enable_availability_zones(self.name, zones)
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195 self.availability_zones = new_zones
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196
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197 def disable_zones(self, zones):
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198 """
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199 Disable availability zones from this Access Point.
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200
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201 :type zones: string or List of strings
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202 :param zones: The name of the zone(s) to add.
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203
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204 """
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205 if isinstance(zones, six.string_types):
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206 zones = [zones]
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207 new_zones = self.connection.disable_availability_zones(
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208 self.name, zones)
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209 self.availability_zones = new_zones
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210
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211 def get_attributes(self, force=False):
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212 """
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213 Gets the LbAttributes. The Attributes will be cached.
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214
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215 :type force: bool
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216 :param force: Ignore cache value and reload.
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217
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218 :rtype: boto.ec2.elb.attributes.LbAttributes
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219 :return: The LbAttribues object
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220 """
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221 if not self._attributes or force:
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222 self._attributes = self.connection.get_all_lb_attributes(self.name)
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223 return self._attributes
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224
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225 def is_cross_zone_load_balancing(self, force=False):
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226 """
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227 Identifies if the ELB is current configured to do CrossZone Balancing.
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228
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229 :type force: bool
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230 :param force: Ignore cache value and reload.
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231
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232 :rtype: bool
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233 :return: True if balancing is enabled, False if not.
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234 """
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235 return self.get_attributes(force).cross_zone_load_balancing.enabled
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236
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237 def enable_cross_zone_load_balancing(self):
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238 """
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239 Turns on CrossZone Load Balancing for this ELB.
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240
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241 :rtype: bool
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242 :return: True if successful, False if not.
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243 """
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244 success = self.connection.modify_lb_attribute(
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245 self.name, 'crossZoneLoadBalancing', True)
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246 if success and self._attributes:
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247 self._attributes.cross_zone_load_balancing.enabled = True
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248 return success
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249
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250 def disable_cross_zone_load_balancing(self):
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251 """
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252 Turns off CrossZone Load Balancing for this ELB.
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253
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254 :rtype: bool
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255 :return: True if successful, False if not.
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256 """
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257 success = self.connection.modify_lb_attribute(
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258 self.name, 'crossZoneLoadBalancing', False)
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259 if success and self._attributes:
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260 self._attributes.cross_zone_load_balancing.enabled = False
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261 return success
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262
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263 def register_instances(self, instances):
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264 """
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265 Adds instances to this load balancer. All instances must be in the same
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266 region as the load balancer. Adding endpoints that are already
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267 registered with the load balancer has no effect.
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268
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269 :param list instances: List of instance IDs (strings) that you'd like
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270 to add to this load balancer.
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271
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272 """
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273 if isinstance(instances, six.string_types):
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274 instances = [instances]
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275 new_instances = self.connection.register_instances(self.name,
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276 instances)
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277 self.instances = new_instances
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278
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279 def deregister_instances(self, instances):
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280 """
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281 Remove instances from this load balancer. Removing instances that are
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282 not registered with the load balancer has no effect.
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283
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284 :param list instances: List of instance IDs (strings) that you'd like
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285 to remove from this load balancer.
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286
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287 """
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288 if isinstance(instances, six.string_types):
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289 instances = [instances]
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290 new_instances = self.connection.deregister_instances(self.name,
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291 instances)
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292 self.instances = new_instances
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293
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294 def delete(self):
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295 """
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296 Delete this load balancer.
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297 """
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298 return self.connection.delete_load_balancer(self.name)
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299
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300 def configure_health_check(self, health_check):
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301 """
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302 Configures the health check behavior for the instances behind this
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303 load balancer. See :ref:`elb-configuring-a-health-check` for a
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304 walkthrough.
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305
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306 :param boto.ec2.elb.healthcheck.HealthCheck health_check: A
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307 HealthCheck instance that tells the load balancer how to check
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308 its instances for health.
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309 """
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310 return self.connection.configure_health_check(self.name, health_check)
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311
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312 def get_instance_health(self, instances=None):
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313 """
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314 Returns a list of :py:class:`boto.ec2.elb.instancestate.InstanceState`
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315 objects, which show the health of the instances attached to this
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316 load balancer.
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317
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318 :rtype: list
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319 :returns: A list of
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320 :py:class:`InstanceState <boto.ec2.elb.instancestate.InstanceState>`
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321 instances, representing the instances
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322 attached to this load balancer.
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323 """
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324 return self.connection.describe_instance_health(self.name, instances)
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325
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326 def create_listeners(self, listeners):
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327 return self.connection.create_load_balancer_listeners(self.name,
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328 listeners)
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329
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330 def create_listener(self, inPort, outPort=None, proto="tcp"):
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331 if outPort is None:
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332 outPort = inPort
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333 return self.create_listeners([(inPort, outPort, proto)])
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334
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335 def delete_listeners(self, listeners):
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336 return self.connection.delete_load_balancer_listeners(self.name,
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337 listeners)
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338
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339 def delete_listener(self, inPort):
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340 return self.delete_listeners([inPort])
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341
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342 def delete_policy(self, policy_name):
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343 """
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344 Deletes a policy from the LoadBalancer. The specified policy must not
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345 be enabled for any listeners.
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346 """
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347 return self.connection.delete_lb_policy(self.name, policy_name)
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348
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349 def set_policies_of_listener(self, lb_port, policies):
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350 return self.connection.set_lb_policies_of_listener(self.name,
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351 lb_port,
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352 policies)
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353
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354 def set_policies_of_backend_server(self, instance_port, policies):
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355 return self.connection.set_lb_policies_of_backend_server(
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356 self.name, instance_port, policies)
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357
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358 def create_cookie_stickiness_policy(self, cookie_expiration_period,
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359 policy_name):
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360 return self.connection.create_lb_cookie_stickiness_policy(
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361 cookie_expiration_period, self.name, policy_name)
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362
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363 def create_app_cookie_stickiness_policy(self, name, policy_name):
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364 return self.connection.create_app_cookie_stickiness_policy(name,
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365 self.name,
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366 policy_name)
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367
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368 def set_listener_SSL_certificate(self, lb_port, ssl_certificate_id):
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369 return self.connection.set_lb_listener_SSL_certificate(
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370 self.name, lb_port, ssl_certificate_id)
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371
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372 def create_lb_policy(self, policy_name, policy_type, policy_attribute):
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373 return self.connection.create_lb_policy(
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374 self.name, policy_name, policy_type, policy_attribute)
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375
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376 def attach_subnets(self, subnets):
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377 """
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378 Attaches load balancer to one or more subnets.
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379 Attaching subnets that are already registered with the
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380 Load Balancer has no effect.
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381
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382 :type subnets: string or List of strings
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383 :param subnets: The name of the subnet(s) to add.
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384
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385 """
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386 if isinstance(subnets, six.string_types):
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387 subnets = [subnets]
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388 new_subnets = self.connection.attach_lb_to_subnets(self.name, subnets)
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389 self.subnets = new_subnets
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390
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391 def detach_subnets(self, subnets):
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392 """
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393 Detaches load balancer from one or more subnets.
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394
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395 :type subnets: string or List of strings
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396 :param subnets: The name of the subnet(s) to detach.
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397
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398 """
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399 if isinstance(subnets, six.string_types):
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400 subnets = [subnets]
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401 new_subnets = self.connection.detach_lb_from_subnets(
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402 self.name, subnets)
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403 self.subnets = new_subnets
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404
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405 def apply_security_groups(self, security_groups):
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406 """
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407 Associates one or more security groups with the load balancer.
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408 The provided security groups will override any currently applied
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409 security groups.
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410
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411 :type security_groups: string or List of strings
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412 :param security_groups: The name of the security group(s) to add.
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413
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414 """
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415 if isinstance(security_groups, six.string_types):
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416 security_groups = [security_groups]
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417 new_sgs = self.connection.apply_security_groups_to_lb(
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418 self.name, security_groups)
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419 self.security_groups = new_sgs