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Allow for reuse of allocated but unassociated Elastic IPs.

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Thomas van Noort 2013-11-15 10:14:13 +01:00
parent 009fdbf96a
commit 5f1dd47954
1 changed files with 26 additions and 5 deletions
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31
library/cloud/ec2_eip
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@ -53,6 +53,11 @@ options:
required: false
default: false
version_added: "1.4"
reuse:
description:
- Reuse an EIP that is not associated to an instance (when available), instead of allocating a new one.
required: false
default: false
requirements: [ "boto" ]
author: Lorin Hochstein <lorin@nimbisservices.com>
notes:
@ -198,13 +203,27 @@ def ip_is_associated_with_instance(ec2, public_ip, instance_id, module):
return False
def allocate_address(ec2, domain, module):
""" Allocate a new elastic IP address and return it """
def allocate_address(ec2, domain, module, reuse):
""" Allocate a new elastic IP address (when needed) and return it """
# If we're in check mode, nothing else to do
if module.check_mode:
module.exit_json(change=True)
address = ec2.allocate_address(domain=domain)
if reuse:
if domain:
domain_filter = { 'domain' : domain }
else:
domain_filter = { 'domain' : 'standard' }
all_addresses = ec2.get_all_addresses(filters=domain_filter)
unassociated_addresses = filter(lambda a: a.instance_id is None, all_addresses)
if unassociated_addresses:
address = unassociated_addresses[0];
else:
address = ec2.allocate_address(domain=domain)
else:
address = ec2.allocate_address(domain=domain)
return address
@ -252,6 +271,7 @@ def main():
ec2_access_key = dict(required=False, aliases=['EC2_ACCESS_KEY']),
region = dict(required=False, aliases=['ec2_region']),
in_vpc = dict(required=False, choices=BOOLEANS, default=False),
reuse = dict(required=False, choices=BOOLEANS, default=False),
),
supports_check_mode=True
)
@ -272,18 +292,19 @@ def main():
state = module.params.get('state')
in_vpc = module.params.get('in_vpc')
domain = "vpc" if in_vpc else None
reuse = module.params.get('reuse');
if state == 'present':
if public_ip is None:
if instance_id is None:
address = allocate_address(ec2, domain, module)
address = allocate_address(ec2, domain, module, reuse)
module.exit_json(changed=True, public_ip=address.public_ip)
else:
# Determine if the instance is inside a VPC or not
instance = find_instance(ec2, instance_id, module)
if instance.vpc_id != None:
domain = "vpc"
address = allocate_address(ec2, domain, module)
address = allocate_address(ec2, domain, module, reuse)
else:
address = find_address(ec2, public_ip, module)
associate_ip_and_instance(ec2, address, instance_id, module)