Update ec2_vpc_subnet_facts to use Boto3 (#25374)
* update ec2_vpc_subnet_facts module to use boto3 and support gathering updated fact items from AWS API add version_added to new parameter added return docs and other requested changes removed errant extra blank line updates per review * update per review: fix AWSRetry backoff implementation and fix example that was not correct
This commit is contained in:
Daniel Shepherd
Will Thames
parent
779e365639
commit
2cdf31d3a2
1 changed files with 146 additions and 49 deletions
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@ -26,13 +26,18 @@ description:
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- Gather facts about ec2 VPC subnets in AWS
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version_added: "2.1"
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author: "Rob White (@wimnat)"
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requirements:
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- boto3
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- botocore
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options:
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subnet_ids:
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description:
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- A list of subnet IDs to gather facts for.
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version_added: "2.5"
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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.
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See U(http://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_DescribeSubnets.html) for possible filters.
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required: false
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default: null
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extends_documentation_fragment:
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- aws
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- ec2
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@ -46,8 +51,7 @@ EXAMPLES = '''
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# Gather facts about a particular VPC subnet using ID
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- ec2_vpc_subnet_facts:
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filters:
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subnet-id: subnet-00112233
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subnet_ids: subnet-00112233
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# Gather facts about any VPC subnet with a tag key Name and value Example
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- ec2_vpc_subnet_facts:
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@ -74,76 +78,169 @@ EXAMPLES = '''
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register: subnet_facts
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- set_fact:
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subnet_ids: "{{ subnet_facts.results|map(attribute='subnets.0.id')|list }}"
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subnet_ids: "{{ subnet_facts.subnets|map(attribute='id')|list }}"
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'''
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try:
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import boto.vpc
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from boto.exception import BotoServerError
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HAS_BOTO = True
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except ImportError:
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HAS_BOTO = False
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RETURN = '''
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subnets:
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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: complex
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contains:
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subnet_id:
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description: The ID of the Subnet.
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returned: always
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type: string
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id:
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description: The ID of the Subnet (for backwards compatibility).
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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 .
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returned: always
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type: string
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state:
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description: The state of the subnet.
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returned: always
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type: string
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tags:
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description: A dict of tags associated with the Subnet.
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returned: always
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type: dict
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map_public_ip_on_launch:
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description: True/False depending on attribute setting for public IP mapping.
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returned: always
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type: boolean
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default_for_az:
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description: True if this is the default subnet for AZ.
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returned: always
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type: boolean
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cidr_block:
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description: The IPv4 CIDR block assigned to the subnet.
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returned: always
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type: string
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available_ip_address_count:
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description: Count of available IPs in subnet.
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returned: always
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type: string
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availability_zone:
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description: The availability zone where the subnet exists.
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returned: always
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type: string
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assign_ipv6_address_on_creation:
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description: True/False depending on attribute setting for IPv6 address assignment.
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returned: always
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type: boolean
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ipv6_cidr_block_association_set:
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description: An array of IPv6 cidr block association set information.
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returned: always
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type: complex
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contains:
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association_id:
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description: The association ID
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returned: always
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type: string
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ipv6_cidr_block:
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description: The IPv6 CIDR block that is associated with the subnet.
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returned: always
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type: string
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ipv6_cidr_block_state:
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description: A hash/dict that contains a single item. The state of the cidr block association.
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returned: always
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type: dict
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contains:
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state:
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description: The CIDR block association state.
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returned: always
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type: string
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'''
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import traceback
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from ansible.module_utils.basic import AnsibleModule
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from ansible.module_utils.ec2 import AnsibleAWSError, connect_to_aws, ec2_argument_spec, get_aws_connection_info
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def get_subnet_info(subnet):
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subnet_info = {'id': subnet.id,
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'availability_zone': subnet.availability_zone,
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'available_ip_address_count': subnet.available_ip_address_count,
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'cidr_block': subnet.cidr_block,
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'default_for_az': subnet.defaultForAz,
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'map_public_ip_on_launch': subnet.mapPublicIpOnLaunch,
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'state': subnet.state,
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'tags': subnet.tags,
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'vpc_id': subnet.vpc_id}
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return subnet_info
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def list_ec2_vpc_subnets(connection, module):
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filters = module.params.get("filters")
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subnet_dict_array = []
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from ansible.module_utils.ec2 import (
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boto3_conn,
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ec2_argument_spec,
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get_aws_connection_info,
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AWSRetry,
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HAS_BOTO3,
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boto3_tag_list_to_ansible_dict,
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camel_dict_to_snake_dict,
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ansible_dict_to_boto3_filter_list
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)
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try:
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all_subnets = connection.get_all_subnets(filters=filters)
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except BotoServerError as e:
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module.fail_json(msg=e.message)
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import botocore
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except ImportError:
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pass # caught by imported HAS_BOTO3
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for subnet in all_subnets:
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subnet_dict_array.append(get_subnet_info(subnet))
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module.exit_json(subnets=subnet_dict_array)
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@AWSRetry.exponential_backoff()
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def describe_subnets_with_backoff(connection, subnet_ids, filters):
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"""
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Describe Subnets with AWSRetry backoff throttling support.
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connection : boto3 client connection object
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subnet_ids : list of subnet ids for which to gather facts
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filters : additional filters to apply to request
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"""
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return connection.describe_subnets(SubnetIds=subnet_ids, Filters=filters)
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def describe_subnets(connection, module):
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"""
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Describe Subnets.
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module : AnsibleModule object
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connection : boto3 client connection object
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"""
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# collect parameters
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filters = ansible_dict_to_boto3_filter_list(module.params.get('filters'))
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subnet_ids = module.params.get('subnet_ids')
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if subnet_ids is None:
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# Set subnet_ids to empty list if it is None
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subnet_ids = []
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# init empty list for return vars
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subnet_info = list()
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# Get the basic VPC info
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try:
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response = describe_subnets_with_backoff(connection, subnet_ids, filters)
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except botocore.exceptions.ClientError as e:
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module.fail_json(msg=e.message, exception=traceback.format_exc(), **camel_dict_to_snake_dict(e.response))
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for subnet in response['Subnets']:
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# for backwards compatibility
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subnet['id'] = subnet['SubnetId']
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subnet_info.append(camel_dict_to_snake_dict(subnet))
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# convert tag list to ansible dict
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subnet_info[-1]['tags'] = boto3_tag_list_to_ansible_dict(subnet['Tags'])
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module.exit_json(subnets=subnet_info)
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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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filters=dict(default=None, type='dict')
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)
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)
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argument_spec.update(dict(
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subnet_ids=dict(type='list', default=[]),
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filters=dict(type='dict', default={})
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))
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module = AnsibleModule(argument_spec=argument_spec,
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supports_check_mode=True)
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if not HAS_BOTO:
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module.fail_json(msg='boto required for this module')
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if not HAS_BOTO3:
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module.fail_json(msg='boto3 is required for this module')
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region, ec2_url, aws_connect_params = get_aws_connection_info(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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try:
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connection = connect_to_aws(boto.vpc, region, **aws_connect_params)
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except (boto.exception.NoAuthHandlerFound, AnsibleAWSError) as e:
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module.fail_json(msg=str(e))
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else:
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module.fail_json(msg="region must be specified")
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connection = boto3_conn(module, conn_type='client', resource='ec2', **aws_connect_params)
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except (botocore.exceptions.NoCredentialsError, botocore.exceptions.ProfileNotFound) as e:
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module.fail_json(msg=e.message, exception=traceback.format_exc(), **camel_dict_to_snake_dict(e.response))
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list_ec2_vpc_subnets(connection, module)
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describe_subnets(connection, module)
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if __name__ == '__main__':
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