626 lines
24 KiB
Python
626 lines
24 KiB
Python
#!/usr/bin/python
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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DOCUMENTATION = '''
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---
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module: ec2_vpc
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short_description: configure AWS virtual private clouds
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description:
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- Create or terminates AWS virtual private clouds. This module has a dependency on python-boto.
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version_added: "1.4"
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options:
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cidr_block:
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description:
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- "The cidr block representing the VPC, e.g. 10.0.0.0/16"
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required: false, unless state=present
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instance_tenancy:
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description:
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- "The supported tenancy options for instances launched into the VPC."
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required: false
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default: "default"
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choices: [ "default", "dedicated" ]
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dns_support:
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description:
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- toggles the "Enable DNS resolution" flag
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required: false
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default: "yes"
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choices: [ "yes", "no" ]
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dns_hostnames:
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description:
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- toggles the "Enable DNS hostname support for instances" flag
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required: false
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default: "yes"
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choices: [ "yes", "no" ]
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subnets:
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description:
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- 'A dictionary array of subnets to add of the form: { cidr: ..., az: ... , resource_tags: ... }. Where az is the desired availability zone of the subnet, but it is not required. Tags (i.e.: resource_tags) is also optional and use dictionary form: { "Environment":"Dev", "Tier":"Web", ...}. All VPC subnets not in this list will be removed. As of 1.8, if the subnets parameter is not specified, no existing subnets will be modified.'
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required: false
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default: null
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aliases: []
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vpc_id:
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description:
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- A VPC id to terminate when state=absent
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required: false
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default: null
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aliases: []
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resource_tags:
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description:
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- 'A dictionary array of resource tags of the form: { tag1: value1, tag2: value2 }. Tags in this list are used in conjunction with CIDR block to uniquely identify a VPC in lieu of vpc_id. Therefore, if CIDR/Tag combination does not exits, a new VPC will be created. VPC tags not on this list will be ignored. Prior to 1.7, specifying a resource tag was optional.'
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required: true
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default: null
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aliases: []
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version_added: "1.6"
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internet_gateway:
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description:
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- Toggle whether there should be an Internet gateway attached to the VPC
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required: false
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default: "no"
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choices: [ "yes", "no" ]
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aliases: []
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route_tables:
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description:
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- 'A dictionary array of route tables to add of the form: { subnets: [172.22.2.0/24, 172.22.3.0/24,], routes: [{ dest: 0.0.0.0/0, gw: igw},] }. Where the subnets list is those subnets the route table should be associated with, and the routes list is a list of routes to be in the table. The special keyword for the gw of igw specifies that you should the route should go through the internet gateway attached to the VPC. gw also accepts instance-ids in addition igw. This module is currently unable to affect the "main" route table due to some limitations in boto, so you must explicitly define the associated subnets or they will be attached to the main table implicitly. As of 1.8, if the route_tables parameter is not specified, no existing routes will be modified.'
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required: false
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default: null
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aliases: []
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wait:
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description:
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- wait for the VPC to be in state 'available' before returning
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required: false
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default: "no"
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choices: [ "yes", "no" ]
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aliases: []
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wait_timeout:
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description:
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- how long before wait gives up, in seconds
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default: 300
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aliases: []
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state:
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description:
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- Create or terminate the VPC
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required: true
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default: present
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aliases: []
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region:
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description:
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- region in which the resource exists.
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required: false
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default: null
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aliases: ['aws_region', 'ec2_region']
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aws_secret_key:
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description:
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- AWS secret key. If not set then the value of the AWS_SECRET_KEY environment variable is used.
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required: false
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default: None
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aliases: ['ec2_secret_key', 'secret_key' ]
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aws_access_key:
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description:
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- AWS access key. If not set then the value of the AWS_ACCESS_KEY environment variable is used.
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required: false
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default: None
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aliases: ['ec2_access_key', 'access_key' ]
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validate_certs:
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description:
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- When set to "no", SSL certificates will not be validated for boto versions >= 2.6.0.
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required: false
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default: "yes"
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choices: ["yes", "no"]
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aliases: []
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version_added: "1.5"
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requirements: [ "boto" ]
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author: Carson Gee
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'''
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EXAMPLES = '''
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# Note: None of these examples set aws_access_key, aws_secret_key, or region.
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# It is assumed that their matching environment variables are set.
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# Basic creation example:
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local_action:
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module: ec2_vpc
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state: present
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cidr_block: 172.23.0.0/16
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resource_tags: { "Environment":"Development" }
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region: us-west-2
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# Full creation example with subnets and optional availability zones.
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# The absence or presence of subnets deletes or creates them respectively.
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local_action:
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module: ec2_vpc
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state: present
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cidr_block: 172.22.0.0/16
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resource_tags: { "Environment":"Development" }
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subnets:
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- cidr: 172.22.1.0/24
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az: us-west-2c
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resource_tags: { "Environment":"Dev", "Tier" : "Web" }
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- cidr: 172.22.2.0/24
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az: us-west-2b
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resource_tags: { "Environment":"Dev", "Tier" : "App" }
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- cidr: 172.22.3.0/24
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az: us-west-2a
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resource_tags: { "Environment":"Dev", "Tier" : "DB" }
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internet_gateway: True
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route_tables:
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- subnets:
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- 172.22.2.0/24
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- 172.22.3.0/24
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routes:
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- dest: 0.0.0.0/0
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gw: igw
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- subnets:
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- 172.22.1.0/24
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routes:
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- dest: 0.0.0.0/0
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gw: igw
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region: us-west-2
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register: vpc
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# Removal of a VPC by id
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local_action:
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module: ec2_vpc
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state: absent
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vpc_id: vpc-aaaaaaa
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region: us-west-2
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If you have added elements not managed by this module, e.g. instances, NATs, etc then
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the delete will fail until those dependencies are removed.
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'''
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import sys
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import time
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try:
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import boto.ec2
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import boto.vpc
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from boto.exception import EC2ResponseError
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except ImportError:
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print "failed=True msg='boto required for this module'"
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sys.exit(1)
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def get_vpc_info(vpc):
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"""
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Retrieves vpc information from an instance
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ID and returns it as a dictionary
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"""
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return({
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'id': vpc.id,
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'cidr_block': vpc.cidr_block,
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'dhcp_options_id': vpc.dhcp_options_id,
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'region': vpc.region.name,
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'state': vpc.state,
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})
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def find_vpc(module, vpc_conn, vpc_id=None, cidr=None):
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"""
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Finds a VPC that matches a specific id or cidr + tags
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module : AnsibleModule object
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vpc_conn: authenticated VPCConnection connection object
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Returns:
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A VPC object that matches either an ID or CIDR and one or more tag values
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"""
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if vpc_id == None and cidr == None:
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module.fail_json(
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msg='You must specify either a vpc_id or a cidr block + list of unique tags, aborting'
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)
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found_vpcs = []
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resource_tags = module.params.get('resource_tags')
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# Check for existing VPC by cidr_block or id
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if vpc_id is not None:
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found_vpcs = vpc_conn.get_all_vpcs(None, {'vpc-id': vpc_id, 'state': 'available',})
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else:
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previous_vpcs = vpc_conn.get_all_vpcs(None, {'cidr': cidr, 'state': 'available'})
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for vpc in previous_vpcs:
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# Get all tags for each of the found VPCs
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vpc_tags = dict((t.name, t.value) for t in vpc_conn.get_all_tags(filters={'resource-id': vpc.id}))
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# If the supplied list of ID Tags match a subset of the VPC Tags, we found our VPC
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if resource_tags and set(resource_tags.items()).issubset(set(vpc_tags.items())):
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found_vpcs.append(vpc)
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found_vpc = None
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if len(found_vpcs) == 1:
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found_vpc = found_vpcs[0]
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if len(found_vpcs) > 1:
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module.fail_json(msg='Found more than one vpc based on the supplied criteria, aborting')
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return (found_vpc)
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def create_vpc(module, vpc_conn):
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"""
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Creates a new or modifies an existing VPC.
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module : AnsibleModule object
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vpc_conn: authenticated VPCConnection connection object
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Returns:
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A dictionary with information
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about the VPC and subnets that were launched
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"""
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id = module.params.get('vpc_id')
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cidr_block = module.params.get('cidr_block')
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instance_tenancy = module.params.get('instance_tenancy')
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dns_support = module.params.get('dns_support')
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dns_hostnames = module.params.get('dns_hostnames')
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subnets = module.params.get('subnets')
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internet_gateway = module.params.get('internet_gateway')
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route_tables = module.params.get('route_tables')
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vpc_spec_tags = module.params.get('resource_tags')
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wait = module.params.get('wait')
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wait_timeout = int(module.params.get('wait_timeout'))
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changed = False
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# Check for existing VPC by cidr_block + tags or id
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previous_vpc = find_vpc(module, vpc_conn, id, cidr_block)
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if previous_vpc is not None:
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changed = False
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vpc = previous_vpc
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else:
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changed = True
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try:
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vpc = vpc_conn.create_vpc(cidr_block, instance_tenancy)
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# wait here until the vpc is available
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pending = True
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wait_timeout = time.time() + wait_timeout
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while wait and wait_timeout > time.time() and pending:
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try:
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pvpc = vpc_conn.get_all_vpcs(vpc.id)
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if hasattr(pvpc, 'state'):
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if pvpc.state == "available":
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pending = False
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elif hasattr(pvpc[0], 'state'):
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if pvpc[0].state == "available":
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pending = False
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# sometimes vpc_conn.create_vpc() will return a vpc that can't be found yet by vpc_conn.get_all_vpcs()
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# when that happens, just wait a bit longer and try again
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except boto.exception.BotoServerError, e:
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if e.error_code != 'InvalidVpcID.NotFound':
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raise
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if pending:
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time.sleep(5)
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if wait and wait_timeout <= time.time():
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# waiting took too long
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module.fail_json(msg = "wait for vpc availability timeout on %s" % time.asctime())
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except boto.exception.BotoServerError, e:
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module.fail_json(msg = "%s: %s" % (e.error_code, e.error_message))
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# Done with base VPC, now change to attributes and features.
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# Add resource tags
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vpc_tags = dict((t.name, t.value) for t in vpc_conn.get_all_tags(filters={'resource-id': vpc.id}))
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if not set(vpc_spec_tags.items()).issubset(set(vpc_tags.items())):
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new_tags = {}
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for (key, value) in set(vpc_spec_tags.items()):
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if (key, value) not in set(vpc_tags.items()):
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new_tags[key] = value
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if new_tags:
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vpc_conn.create_tags(vpc.id, new_tags)
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# boto doesn't appear to have a way to determine the existing
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# value of the dns attributes, so we just set them.
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# It also must be done one at a time.
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vpc_conn.modify_vpc_attribute(vpc.id, enable_dns_support=dns_support)
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vpc_conn.modify_vpc_attribute(vpc.id, enable_dns_hostnames=dns_hostnames)
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# Process all subnet properties
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if subnets is not None:
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if not isinstance(subnets, list):
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module.fail_json(msg='subnets needs to be a list of cidr blocks')
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current_subnets = vpc_conn.get_all_subnets(filters={ 'vpc_id': vpc.id })
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# First add all new subnets
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for subnet in subnets:
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add_subnet = True
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for csn in current_subnets:
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if subnet['cidr'] == csn.cidr_block:
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add_subnet = False
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if add_subnet:
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try:
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new_subnet = vpc_conn.create_subnet(vpc.id, subnet['cidr'], subnet.get('az', None))
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new_subnet_tags = subnet.get('resource_tags', None)
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if new_subnet_tags:
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# Sometimes AWS takes its time to create a subnet and so using new subnets's id
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# to create tags results in exception.
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# boto doesn't seem to refresh 'state' of the newly created subnet, i.e.: it's always 'pending'
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# so i resorted to polling vpc_conn.get_all_subnets with the id of the newly added subnet
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while len(vpc_conn.get_all_subnets(filters={ 'subnet-id': new_subnet.id })) == 0:
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time.sleep(0.1)
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vpc_conn.create_tags(new_subnet.id, new_subnet_tags)
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changed = True
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except EC2ResponseError, e:
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module.fail_json(msg='Unable to create subnet {0}, error: {1}'.format(subnet['cidr'], e))
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# Now delete all absent subnets
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for csubnet in current_subnets:
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delete_subnet = True
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for subnet in subnets:
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if csubnet.cidr_block == subnet['cidr']:
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delete_subnet = False
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if delete_subnet:
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try:
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vpc_conn.delete_subnet(csubnet.id)
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changed = True
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except EC2ResponseError, e:
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module.fail_json(msg='Unable to delete subnet {0}, error: {1}'.format(csubnet.cidr_block, e))
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# Handle Internet gateway (create/delete igw)
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igw = None
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igws = vpc_conn.get_all_internet_gateways(filters={'attachment.vpc-id': vpc.id})
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if len(igws) > 1:
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module.fail_json(msg='EC2 returned more than one Internet Gateway for id %s, aborting' % vpc.id)
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if internet_gateway:
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if len(igws) != 1:
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try:
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igw = vpc_conn.create_internet_gateway()
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vpc_conn.attach_internet_gateway(igw.id, vpc.id)
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changed = True
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except EC2ResponseError, e:
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module.fail_json(msg='Unable to create Internet Gateway, error: {0}'.format(e))
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else:
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# Set igw variable to the current igw instance for use in route tables.
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igw = igws[0]
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else:
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if len(igws) > 0:
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try:
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vpc_conn.detach_internet_gateway(igws[0].id, vpc.id)
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vpc_conn.delete_internet_gateway(igws[0].id)
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changed = True
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except EC2ResponseError, e:
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module.fail_json(msg='Unable to delete Internet Gateway, error: {0}'.format(e))
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# Handle route tables - this may be worth splitting into a
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# different module but should work fine here. The strategy to stay
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# indempotent is to basically build all the route tables as
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# defined, track the route table ids, and then run through the
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# remote list of route tables and delete any that we didn't
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# create. This shouldn't interrupt traffic in theory, but is the
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# only way to really work with route tables over time that I can
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# think of without using painful aws ids. Hopefully boto will add
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# the replace-route-table API to make this smoother and
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# allow control of the 'main' routing table.
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if route_tables is not None:
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if not isinstance(route_tables, list):
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module.fail_json(msg='route tables need to be a list of dictionaries')
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# Work through each route table and update/create to match dictionary array
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all_route_tables = []
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for rt in route_tables:
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try:
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new_rt = vpc_conn.create_route_table(vpc.id)
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for route in rt['routes']:
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route_kwargs = {}
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if route['gw'] == 'igw':
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if not internet_gateway:
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module.fail_json(
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msg='You asked for an Internet Gateway ' \
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'(igw) route, but you have no Internet Gateway'
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)
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route_kwargs['gateway_id'] = igw.id
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elif route['gw'].startswith('i-'):
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route_kwargs['instance_id'] = route['gw']
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else:
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route_kwargs['gateway_id'] = route['gw']
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vpc_conn.create_route(new_rt.id, route['dest'], **route_kwargs)
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# Associate with subnets
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for sn in rt['subnets']:
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rsn = vpc_conn.get_all_subnets(filters={'cidr': sn, 'vpc_id': vpc.id })
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if len(rsn) != 1:
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module.fail_json(
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msg='The subnet {0} to associate with route_table {1} ' \
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'does not exist, aborting'.format(sn, rt)
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)
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rsn = rsn[0]
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# Disassociate then associate since we don't have replace
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old_rt = vpc_conn.get_all_route_tables(
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filters={'association.subnet_id': rsn.id, 'vpc_id': vpc.id}
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)
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old_rt = [ x for x in old_rt if x.id != None ]
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if len(old_rt) == 1:
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old_rt = old_rt[0]
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association_id = None
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for a in old_rt.associations:
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if a.subnet_id == rsn.id:
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association_id = a.id
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vpc_conn.disassociate_route_table(association_id)
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|
|
vpc_conn.associate_route_table(new_rt.id, rsn.id)
|
|
|
|
all_route_tables.append(new_rt)
|
|
changed = True
|
|
except EC2ResponseError, e:
|
|
module.fail_json(
|
|
msg='Unable to create and associate route table {0}, error: ' \
|
|
'{1}'.format(rt, e)
|
|
)
|
|
|
|
# Now that we are good to go on our new route tables, delete the
|
|
# old ones except the 'main' route table as boto can't set the main
|
|
# table yet.
|
|
all_rts = vpc_conn.get_all_route_tables(filters={'vpc-id': vpc.id})
|
|
for rt in all_rts:
|
|
if rt.id is None:
|
|
continue
|
|
delete_rt = True
|
|
for newrt in all_route_tables:
|
|
if newrt.id == rt.id:
|
|
delete_rt = False
|
|
break
|
|
if delete_rt:
|
|
rta = rt.associations
|
|
is_main = False
|
|
for a in rta:
|
|
if a.main:
|
|
is_main = True
|
|
break
|
|
try:
|
|
if not is_main:
|
|
vpc_conn.delete_route_table(rt.id)
|
|
changed = True
|
|
except EC2ResponseError, e:
|
|
module.fail_json(msg='Unable to delete old route table {0}, error: {1}'.format(rt.id, e))
|
|
|
|
vpc_dict = get_vpc_info(vpc)
|
|
created_vpc_id = vpc.id
|
|
returned_subnets = []
|
|
current_subnets = vpc_conn.get_all_subnets(filters={ 'vpc_id': vpc.id })
|
|
|
|
for sn in current_subnets:
|
|
returned_subnets.append({
|
|
'resource_tags': dict((t.name, t.value) for t in vpc_conn.get_all_tags(filters={'resource-id': sn.id})),
|
|
'cidr': sn.cidr_block,
|
|
'az': sn.availability_zone,
|
|
'id': sn.id,
|
|
})
|
|
|
|
return (vpc_dict, created_vpc_id, returned_subnets, changed)
|
|
|
|
def terminate_vpc(module, vpc_conn, vpc_id=None, cidr=None):
|
|
"""
|
|
Terminates a VPC
|
|
|
|
module: Ansible module object
|
|
vpc_conn: authenticated VPCConnection connection object
|
|
vpc_id: a vpc id to terminate
|
|
cidr: The cidr block of the VPC - can be used in lieu of an ID
|
|
|
|
Returns a dictionary of VPC information
|
|
about the VPC terminated.
|
|
|
|
If the VPC to be terminated is available
|
|
"changed" will be set to True.
|
|
|
|
"""
|
|
vpc_dict = {}
|
|
terminated_vpc_id = ''
|
|
changed = False
|
|
|
|
vpc = find_vpc(module, vpc_conn, vpc_id, cidr)
|
|
|
|
if vpc is not None:
|
|
if vpc.state == 'available':
|
|
terminated_vpc_id=vpc.id
|
|
vpc_dict=get_vpc_info(vpc)
|
|
try:
|
|
subnets = vpc_conn.get_all_subnets(filters={'vpc_id': vpc.id})
|
|
for sn in subnets:
|
|
vpc_conn.delete_subnet(sn.id)
|
|
|
|
igws = vpc_conn.get_all_internet_gateways(
|
|
filters={'attachment.vpc-id': vpc.id}
|
|
)
|
|
for igw in igws:
|
|
vpc_conn.detach_internet_gateway(igw.id, vpc.id)
|
|
vpc_conn.delete_internet_gateway(igw.id)
|
|
|
|
rts = vpc_conn.get_all_route_tables(filters={'vpc_id': vpc.id})
|
|
for rt in rts:
|
|
rta = rt.associations
|
|
is_main = False
|
|
for a in rta:
|
|
if a.main:
|
|
is_main = True
|
|
if not is_main:
|
|
vpc_conn.delete_route_table(rt.id)
|
|
|
|
vpc_conn.delete_vpc(vpc.id)
|
|
except EC2ResponseError, e:
|
|
module.fail_json(
|
|
msg='Unable to delete VPC {0}, error: {1}'.format(vpc.id, e)
|
|
)
|
|
changed = True
|
|
|
|
return (changed, vpc_dict, terminated_vpc_id)
|
|
|
|
|
|
def main():
|
|
argument_spec = ec2_argument_spec()
|
|
argument_spec.update(dict(
|
|
cidr_block = dict(),
|
|
instance_tenancy = dict(choices=['default', 'dedicated'], default='default'),
|
|
wait = dict(type='bool', default=False),
|
|
wait_timeout = dict(default=300),
|
|
dns_support = dict(type='bool', default=True),
|
|
dns_hostnames = dict(type='bool', default=True),
|
|
subnets = dict(type='list'),
|
|
vpc_id = dict(),
|
|
internet_gateway = dict(type='bool', default=False),
|
|
resource_tags = dict(type='dict', required=True),
|
|
route_tables = dict(type='list'),
|
|
state = dict(choices=['present', 'absent'], default='present'),
|
|
)
|
|
)
|
|
|
|
module = AnsibleModule(
|
|
argument_spec=argument_spec,
|
|
)
|
|
|
|
state = module.params.get('state')
|
|
|
|
ec2_url, aws_access_key, aws_secret_key, region = get_ec2_creds(module)
|
|
|
|
# If we have a region specified, connect to its endpoint.
|
|
if region:
|
|
try:
|
|
vpc_conn = boto.vpc.connect_to_region(
|
|
region,
|
|
aws_access_key_id=aws_access_key,
|
|
aws_secret_access_key=aws_secret_key
|
|
)
|
|
except boto.exception.NoAuthHandlerFound, e:
|
|
module.fail_json(msg = str(e))
|
|
else:
|
|
module.fail_json(msg="region must be specified")
|
|
|
|
if module.params.get('state') == 'absent':
|
|
vpc_id = module.params.get('vpc_id')
|
|
cidr = module.params.get('cidr_block')
|
|
(changed, vpc_dict, new_vpc_id) = terminate_vpc(module, vpc_conn, vpc_id, cidr)
|
|
subnets_changed = None
|
|
elif module.params.get('state') == 'present':
|
|
# Changed is always set to true when provisioning a new VPC
|
|
(vpc_dict, new_vpc_id, subnets_changed, changed) = create_vpc(module, vpc_conn)
|
|
|
|
module.exit_json(changed=changed, vpc_id=new_vpc_id, vpc=vpc_dict, subnets=subnets_changed)
|
|
|
|
# import module snippets
|
|
from ansible.module_utils.basic import *
|
|
from ansible.module_utils.ec2 import *
|
|
|
|
main()
|