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# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
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#
#     http://www.apache.org/licenses/LICENSE-2.0
#
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from libcloud.compute.types import Provider as NodeProvider
from libcloud.compute.providers import get_driver as get_node_driver
from libcloud.loadbalancer.providers import get_driver
from libcloud.loadbalancer.base import Algorithm, Member
from libcloud.loadbalancer.types import Provider

SLBDriver = get_driver(Provider.ALIYUN_SLB)
ECSDriver = get_node_driver(NodeProvider.ALIYUN_ECS)

region = 'cn-hangzhou'

your_access_key_id = ''
your_access_key_secret = ''
slb = SLBDriver(your_access_key_id, your_access_key_secret, region=region)
ecs = ECSDriver(your_access_key_id, your_access_key_secret, region=region)

protos = slb.list_protocols()
print('Found %d protocols: %s' % (len(protos), protos))

balancers = slb.list_balancers()
print('Found %d load balancers' % len(balancers))
print(balancers)

if len(balancers) > 0:
    b1 = balancers[0]
    print('Delete %s' % b1)
    slb.destroy_balancer(b1)
else:
    extra = {'AddressType': 'internet',
             'Bandwidth': 1,
             'StickySession': 'off',
             'HealthCheck': 'off'}
    nodes = ecs.list_nodes()
    print('Found %d nodes' % len(nodes))
    members = [Member(node.id, node.public_ips[0], 80, extra={'Weight': 50*(i+1)})
               for i, node in enumerate(nodes)]
    new_b = slb.create_balancer('test-balancer', 80, 'http',
                                Algorithm.WEIGHTED_ROUND_ROBIN, members,
                                **extra)
    print('Created balancer %s' % new_b)
