Merge pull request #2209 from brandond/new-module-ec2_vpc_nacl_facts
New module ec2_vpc_nacl_facts
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Ryan Brown
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cloud/amazon/ec2_vpc_nacl_facts.py
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cloud/amazon/ec2_vpc_nacl_facts.py
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#!/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_nacl_facts
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short_description: Gather facts about Network ACLs in an AWS VPC
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description:
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- Gather facts about Network ACLs in an AWS VPC
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version_added: "2.2"
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author: "Brad Davidson (@brandond)"
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requires: [ boto3 ]
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options:
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nacl_ids:
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description:
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- A list of Network ACL IDs to retrieve facts about.
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required: false
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default: []
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filters:
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description:
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- A dict of filters to apply. Each dict item consists of a filter key and a filter value. See \
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U(http://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_DescribeNetworkAcls.html) for possible filters. Filter \
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names and values are case sensitive.
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required: false
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default: {}
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notes:
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- By default, the module will return all Network ACLs.
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extends_documentation_fragment:
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- aws
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- ec2
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'''
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EXAMPLES = '''
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# Note: These examples do not set authentication details, see the AWS Guide for details.
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# Gather facts about all Network ACLs:
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- name: Get All NACLs
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register: all_nacls
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ec2_vpc_nacl_facts:
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region: us-west-2
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# Retrieve default Network ACLs:
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- name: Get Default NACLs
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register: default_nacls
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ec2_vpc_nacl_facts:
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region: us-west-2
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filters:
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'default': 'true'
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'''
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RETURN = '''
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nacl:
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description: Returns an array of complex objects as described below.
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returned: success
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type: list of complex
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contains:
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nacl_id:
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description: The ID of the Network Access Control List.
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returned: always
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type: string
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vpc_id:
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description: The ID of the VPC that the NACL is attached to.
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returned: always
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type: string
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is_default:
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description: True if the NACL is the default for its VPC.
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returned: always
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type: boolean
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tags:
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description: A dict of tags associated with the NACL.
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returned: always
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type: dict
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subnets:
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description: A list of subnet IDs that are associated with the NACL.
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returned: always
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type: list of string
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ingress:
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description: A list of NACL ingress rules.
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returned: always
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type: list of list
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egress:
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description: A list of NACL egress rules.
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returned: always
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type: list of list
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'''
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try:
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import boto3
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from botocore.exceptions import ClientError, NoCredentialsError
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HAS_BOTO3 = True
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except ImportError:
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HAS_BOTO3 = False
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# VPC-supported IANA protocol numbers
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# http://www.iana.org/assignments/protocol-numbers/protocol-numbers.xhtml
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PROTOCOL_NAMES = {'-1': 'all', '1': 'icmp', '6': 'tcp', '17': 'udp'}
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def list_ec2_vpc_nacls(connection, module):
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nacl_ids = module.params.get("nacl_ids")
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filters = ansible_dict_to_boto3_filter_list(module.params.get("filters"))
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try:
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nacls = connection.describe_network_acls(NetworkAclIds=nacl_ids, Filters=filters)
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except (ClientError, NoCredentialsError) as e:
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module.fail_json(msg=e.message, **camel_dict_to_snake_dict(e.response))
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# Turn the boto3 result in to ansible_friendly_snaked_names
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snaked_nacls = []
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for nacl in nacls['NetworkAcls']:
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snaked_nacls.append(camel_dict_to_snake_dict(nacl))
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# Turn the boto3 result in to ansible friendly tag dictionary
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for nacl in snaked_nacls:
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if 'tags' in nacl:
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nacl['tags'] = boto3_tag_list_to_ansible_dict(nacl['tags'])
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if 'entries' in nacl:
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nacl['egress'] = [nacl_entry_to_list(e) for e in nacl['entries']
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if e['rule_number'] != 32767 and e['egress']]
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nacl['ingress'] = [nacl_entry_to_list(e) for e in nacl['entries']
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if e['rule_number'] != 32767 and not e['egress']]
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del nacl['entries']
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if 'associations' in nacl:
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nacl['subnets'] = [a['subnet_id'] for a in nacl['associations']]
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del nacl['associations']
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if 'network_acl_id' in nacl:
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nacl['nacl_id'] = nacl['network_acl_id']
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del nacl['network_acl_id']
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module.exit_json(nacls=snaked_nacls)
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def nacl_entry_to_list(entry):
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elist = [entry['rule_number'],
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PROTOCOL_NAMES[entry['protocol']],
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entry['rule_action'],
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entry['cidr_block']
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]
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if entry['protocol'] == '1':
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elist = elist + [-1, -1]
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else:
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elist = elist + [None, None, None, None]
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if 'icmp_type_code' in entry:
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elist[4] = entry['icmp_type_code']['type']
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elist[5] = entry['icmp_type_code']['code']
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if 'port_range' in entry:
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elist[6] = entry['port_range']['from']
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elist[7] = entry['port_range']['to']
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return elist
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def main():
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argument_spec = ec2_argument_spec()
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argument_spec.update(
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dict(
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nacl_ids=dict(default=[], type='list'),
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filters=dict(default={}, type='dict')
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)
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)
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module = AnsibleModule(argument_spec=argument_spec,
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mutually_exclusive=[
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['nacl_ids', 'filters']
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]
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)
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if not HAS_BOTO3:
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module.fail_json(msg='boto3 required for this module')
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region, ec2_url, aws_connect_params = get_aws_connection_info(module, boto3=True)
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if region:
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connection = boto3_conn(module, conn_type='client', resource='ec2',
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region=region, endpoint=ec2_url, **aws_connect_params)
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else:
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module.fail_json(msg="region must be specified")
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list_ec2_vpc_nacls(connection, module)
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from ansible.module_utils.basic import *
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from ansible.module_utils.ec2 import *
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if __name__ == '__main__':
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main()
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