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+#!/usr/bin/env python
+# Copyright (c) 2009 Chris Moyer http://coredumped.org/
+#
+# 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
+
+#
+# Elastic Load Balancer Tool
+#
+VERSION="0.1"
+usage = """%prog [options] [command]
+Commands:
+ list|ls List all Elastic Load Balancers
+ delete <name> Delete ELB <name>
+ get <name> Get all instances associated with <name>
+ create <name> Create an ELB
+ add <name> <instance> Add <instance> in ELB <name>
+ remove|rm <name> <instance> Remove <instance> from ELB <name>
+ enable|en <name> <zone> Enable Zone <zone> for ELB <name>
+ disable <name> <zone> Disable Zone <zone> for ELB <name>
+"""
+
+def list(elb):
+ """List all ELBs"""
+ print "%-20s %s" % ("Name", "DNS Name")
+ print "-"*80
+ for b in elb.get_all_load_balancers():
+ print "%-20s %s" % (b.name, b.dns_name)
+
+def get(elb, name):
+ """Get details about ELB <name>"""
+ b = elb.get_all_load_balancers(name)
+ if len(b) < 1:
+ print "No load balancer by the name of %s found" % name
+ return
+ b = b[0]
+
+ print "Name: %s" % b.name
+ print "DNS Name: %s" % b.dns_name
+
+ print
+
+ print "Listeners"
+ print "---------"
+ print "%-8s %-8s %s" % ("IN", "OUT", "PROTO")
+ for l in b.listeners:
+ print "%-8s %-8s %s" % (l[0], l[1], l[2])
+
+ print
+
+ print " Zones "
+ print "---------"
+ for z in b.availability_zones:
+ print z
+
+ print
+
+ print "Instances"
+ print "---------"
+ for i in b.instances:
+ print i.id
+
+ print
+
+def create(elb, name, zones, listeners):
+ """Create an ELB named <name>"""
+ l_list = []
+ for l in listeners:
+ l = l.split(",")
+ l_list.append((int(l[0]), int(l[1]), l[2]))
+
+ b = elb.create_load_balancer(name, zones, l_list)
+ return get(elb, name)
+
+def delete(elb, name):
+ """Delete this ELB"""
+ b = elb.get_all_load_balancers(name)
+ if len(b) < 1:
+ print "No load balancer by the name of %s found" % name
+ return
+ b = b[0]
+ b.delete()
+ print "Load Balancer %s deleted" % name
+
+def add_instance(elb, name, instance):
+ """Add <instance> to ELB <name>"""
+ b = elb.get_all_load_balancers(name)
+ if len(b) < 1:
+ print "No load balancer by the name of %s found" % name
+ return
+ b = b[0]
+ b.register_instances([instance])
+ return get(elb, name)
+
+
+def remove_instance(elb, name, instance):
+ """Remove instance from elb <name>"""
+ b = elb.get_all_load_balancers(name)
+ if len(b) < 1:
+ print "No load balancer by the name of %s found" % name
+ return
+ b = b[0]
+ b.deregister_instances([instance])
+ return get(elb, name)
+
+def enable_zone(elb, name, zone):
+ """Enable <zone> for elb"""
+ b = elb.get_all_load_balancers(name)
+ if len(b) < 1:
+ print "No load balancer by the name of %s found" % name
+ return
+ b = b[0]
+ b.enable_zones([zone])
+ return get(elb, name)
+
+def disable_zone(elb, name, zone):
+ """Disable <zone> for elb"""
+ b = elb.get_all_load_balancers(name)
+ if len(b) < 1:
+ print "No load balancer by the name of %s found" % name
+ return
+ b = b[0]
+ b.disable_zones([zone])
+ return get(elb, name)
+
+
+
+if __name__ == "__main__":
+ try:
+ import readline
+ except ImportError:
+ pass
+ import boto
+ import sys
+ from optparse import OptionParser
+ from boto.mashups.iobject import IObject
+ parser = OptionParser(version=VERSION, usage=usage)
+ parser.add_option("-z", "--zone", help="Operate on zone", action="append", default=[], dest="zones")
+ parser.add_option("-l", "--listener", help="Specify Listener in,out,proto", action="append", default=[], dest="listeners")
+
+ (options, args) = parser.parse_args()
+
+ if len(args) < 1:
+ parser.print_help()
+ sys.exit(1)
+
+ elb = boto.connect_elb()
+ command = args[0].lower()
+ if command in ("ls", "list"):
+ list(elb)
+ elif command == "get":
+ get(elb, args[1])
+ elif command == "create":
+ create(elb, args[1], options.zones, options.listeners)
+ elif command == "delete":
+ delete(elb, args[1])
+ elif command in ("add", "put"):
+ add_instance(elb, args[1], args[2])
+ elif command in ("rm", "remove"):
+ remove_instance(elb, args[1], args[2])
+ elif command in ("en", "enable"):
+ enable_zone(elb, args[1], args[2])
+ elif command == "disable":
+ disable_zone(elb, args[1], args[2])