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ec2_vpc_igw: migrate to boto3 (#45346)

* ec2_vpc_igw: draft migrate to boto3

* ec2_vpc_igw: migrate to boto3

* ec2_vpc_igw: fix error and implement code review

* ec2_vpc_igw: always catch BotoCoreError with ClientError, remove unused fail method

* ec2_vpc_igw: fix pep error
This commit is contained in:
Yanis LISIMA 2018-09-20 11:56:19 +02:00 committed by Will Thames
parent 5c73d4f4bd
commit 45c7facd64

View file

@ -37,6 +37,9 @@ options:
extends_documentation_fragment:
- aws
- ec2
requirements:
- botocore
- boto3
'''
EXAMPLES = '''
@ -80,127 +83,174 @@ vpc_id:
'''
try:
import boto.ec2
import boto.vpc
from boto.exception import EC2ResponseError
HAS_BOTO = True
import botocore
except ImportError:
HAS_BOTO = False
pass # Handled by AnsibleAWSModule
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.ec2 import AnsibleAWSError, connect_to_aws, ec2_argument_spec, get_aws_connection_info
from ansible.module_utils.aws.core import AnsibleAWSModule
from ansible.module_utils.ec2 import (
AWSRetry,
boto3_conn,
ec2_argument_spec,
get_aws_connection_info,
camel_dict_to_snake_dict,
boto3_tag_list_to_ansible_dict,
ansible_dict_to_boto3_filter_list,
ansible_dict_to_boto3_tag_list,
compare_aws_tags
)
from ansible.module_utils.six import string_types
class AnsibleIGWException(Exception):
pass
class AnsibleEc2Igw(object):
def __init__(self, module, results):
self._module = module
self._results = results
self._connection = self._module.client('ec2')
self._check_mode = self._module.check_mode
def get_igw_info(igw):
return {'gateway_id': igw.id,
'tags': igw.tags,
'vpc_id': igw.vpc_id
}
def process(self):
vpc_id = self._module.params.get('vpc_id')
state = self._module.params.get('state', 'present')
tags = self._module.params.get('tags')
if state == 'present':
self.ensure_igw_present(vpc_id, tags)
elif state == 'absent':
self.ensure_igw_absent(vpc_id)
def get_resource_tags(vpc_conn, resource_id):
return dict((t.name, t.value) for t in
vpc_conn.get_all_tags(filters={'resource-id': resource_id}))
def get_matching_igw(self, vpc_id):
filters = ansible_dict_to_boto3_filter_list({'attachment.vpc-id': vpc_id})
igws = []
try:
response = self._connection.describe_internet_gateways(Filters=filters)
igws = response.get('InternetGateways', [])
except (botocore.exceptions.ClientError, botocore.exceptions.BotoCoreError) as e:
self._module.fail_json_aws(e)
igw = None
if len(igws) > 1:
self._module.fail_json(
msg='EC2 returned more than one Internet Gateway for VPC {0}, aborting'.format(vpc_id))
elif igws:
igw = camel_dict_to_snake_dict(igws[0])
def ensure_tags(vpc_conn, resource_id, tags, add_only, check_mode):
try:
cur_tags = get_resource_tags(vpc_conn, resource_id)
if cur_tags == tags:
return {'changed': False, 'tags': cur_tags}
return igw
if check_mode:
latest_check_mode_tags = cur_tags
def check_input_tags(self, tags):
nonstring_tags = [k for k, v in tags.items() if not isinstance(v, string_types)]
if nonstring_tags:
self._module.fail_json(msg='One or more tags contain non-string values: {0}'.format(nonstring_tags))
to_delete = dict((k, cur_tags[k]) for k in cur_tags if k not in tags)
if to_delete and not add_only:
if check_mode:
# just overwriting latest_check_mode_tags instead of deleting keys
latest_check_mode_tags = dict((k, cur_tags[k]) for k in cur_tags if k not in to_delete)
else:
vpc_conn.delete_tags(resource_id, to_delete)
def ensure_tags(self, igw_id, tags, add_only):
final_tags = []
to_add = dict((k, tags[k]) for k in tags if k not in cur_tags or cur_tags[k] != tags[k])
if to_add:
if check_mode:
latest_check_mode_tags.update(to_add)
else:
vpc_conn.create_tags(resource_id, to_add)
filters = ansible_dict_to_boto3_filter_list({'resource-id': igw_id, 'resource-type': 'internet-gateway'})
cur_tags = None
try:
cur_tags = self._connection.describe_tags(Filters=filters)
except (botocore.exceptions.ClientError, botocore.exceptions.BotoCoreError) as e:
self._module.fail_json_aws(e, msg="Couldn't describe tags")
if check_mode:
return {'changed': True, 'tags': latest_check_mode_tags}
latest_tags = get_resource_tags(vpc_conn, resource_id)
return {'changed': True, 'tags': latest_tags}
except EC2ResponseError as e:
raise AnsibleIGWException(
'Unable to update tags for {0}, error: {1}'.format(resource_id, e))
purge_tags = bool(not add_only)
to_update, to_delete = compare_aws_tags(boto3_tag_list_to_ansible_dict(cur_tags.get('Tags')), tags, purge_tags)
final_tags = boto3_tag_list_to_ansible_dict(cur_tags.get('Tags'))
if to_update:
try:
if self._check_mode:
# update tags
final_tags.update(to_update)
else:
AWSRetry.exponential_backoff()(self._connection.create_tags)(
Resources=[igw_id],
Tags=ansible_dict_to_boto3_tag_list(to_update)
)
def get_matching_igw(vpc_conn, vpc_id):
igws = vpc_conn.get_all_internet_gateways(filters={'attachment.vpc-id': vpc_id})
if len(igws) > 1:
raise AnsibleIGWException(
'EC2 returned more than one Internet Gateway for VPC {0}, aborting'
.format(vpc_id))
return igws[0] if igws else None
self._results['changed'] = True
except (botocore.exceptions.ClientError, botocore.exceptions.BotoCoreError) as e:
self._module.fail_json_aws(e, msg="Couldn't create tags")
if to_delete:
try:
if self._check_mode:
# update tags
for key in to_delete:
del final_tags[key]
else:
tags_list = []
for key in to_delete:
tags_list.append({'Key': key})
def ensure_igw_absent(vpc_conn, vpc_id, check_mode):
igw = get_matching_igw(vpc_conn, vpc_id)
if igw is None:
return {'changed': False}
AWSRetry.exponential_backoff()(self._connection.delete_tags)(Resources=[igw_id], Tags=tags_list)
if check_mode:
return {'changed': True}
self._results['changed'] = True
except (botocore.exceptions.ClientError, botocore.exceptions.BotoCoreError) as e:
self._module.fail_json_aws(e, msg="Couldn't delete tags")
try:
vpc_conn.detach_internet_gateway(igw.id, vpc_id)
vpc_conn.delete_internet_gateway(igw.id)
except EC2ResponseError as e:
raise AnsibleIGWException(
'Unable to delete Internet Gateway, error: {0}'.format(e))
if not self._check_mode and (to_update or to_delete):
try:
response = self._connection.describe_tags(Filters=filters)
final_tags = boto3_tag_list_to_ansible_dict(response.get('Tags'))
except (botocore.exceptions.ClientError, botocore.exceptions.BotoCoreError) as e:
self._module.fail_json_aws(e, msg="Couldn't describe tags")
return {'changed': True}
return final_tags
@staticmethod
def get_igw_info(igw):
return {
'gateway_id': igw['internet_gateway_id'],
'tags': igw['tags'],
'vpc_id': igw['vpc_id']
}
def ensure_igw_present(vpc_conn, vpc_id, tags, check_mode):
igw = get_matching_igw(vpc_conn, vpc_id)
changed = False
if igw is None:
if check_mode:
return {'changed': True, 'gateway_id': None}
def ensure_igw_absent(self, vpc_id):
igw = self.get_matching_igw(vpc_id)
if igw is None:
return self._results
if self._check_mode:
self._results['changed'] = True
return self._results
try:
igw = vpc_conn.create_internet_gateway()
vpc_conn.attach_internet_gateway(igw.id, vpc_id)
changed = True
except EC2ResponseError as e:
raise AnsibleIGWException(
'Unable to create Internet Gateway, error: {0}'.format(e))
self._results['changed'] = True
self._connection.detach_internet_gateway(InternetGatewayId=igw['internet_gateway_id'], VpcId=vpc_id)
self._connection.delete_internet_gateway(InternetGatewayId=igw['internet_gateway_id'])
except (botocore.exceptions.ClientError, botocore.exceptions.BotoCoreError) as e:
self._module.fail_json_aws(e, msg="Unable to delete Internet Gateway")
igw.vpc_id = vpc_id
return self._results
if tags != igw.tags:
if check_mode:
check_mode_tags = ensure_tags(vpc_conn, igw.id, tags, False, check_mode)
igw_info = get_igw_info(igw)
igw_info.get('tags', {}).update(check_mode_tags.get('tags', {}))
return {'changed': True, 'gateway': igw_info}
ensure_tags(vpc_conn, igw.id, tags, False, check_mode)
igw.tags = tags
changed = True
def ensure_igw_present(self, vpc_id, tags):
self.check_input_tags(tags)
igw_info = get_igw_info(igw)
igw = self.get_matching_igw(vpc_id)
return {
'changed': changed,
'gateway': igw_info
}
if igw is None:
if self._check_mode:
self._results['changed'] = True
self._results['gateway_id'] = None
return self._results
try:
response = self._connection.create_internet_gateway()
igw = camel_dict_to_snake_dict(response['InternetGateway'])
self._connection.attach_internet_gateway(InternetGatewayId=igw['internet_gateway_id'], VpcId=vpc_id)
self._results['changed'] = True
except (botocore.exceptions.ClientError, botocore.exceptions.BotoCoreError) as e:
self._module.fail_json_aws(e, msg='Unable to create Internet Gateway')
igw['vpc_id'] = vpc_id
igw['tags'] = self.ensure_tags(igw_id=igw['internet_gateway_id'], tags=tags, add_only=False)
igw_info = self.get_igw_info(igw)
self._results.update(igw_info)
return self._results
def main():
@ -213,41 +263,17 @@ def main():
)
)
module = AnsibleModule(
module = AnsibleAWSModule(
argument_spec=argument_spec,
supports_check_mode=True,
)
results = dict(
changed=False
)
igw_manager = AnsibleEc2Igw(module=module, results=results)
igw_manager.process()
if not HAS_BOTO:
module.fail_json(msg='boto is required for this module')
region, ec2_url, aws_connect_params = get_aws_connection_info(module)
if region:
try:
connection = connect_to_aws(boto.vpc, region, **aws_connect_params)
except (boto.exception.NoAuthHandlerFound, AnsibleAWSError) as e:
module.fail_json(msg=str(e))
else:
module.fail_json(msg="region must be specified")
vpc_id = module.params.get('vpc_id')
state = module.params.get('state', 'present')
tags = module.params.get('tags')
nonstring_tags = [k for k, v in tags.items() if not isinstance(v, string_types)]
if nonstring_tags:
module.fail_json(msg='One or more tags contain non-string values: {0}'.format(nonstring_tags))
try:
if state == 'present':
result = ensure_igw_present(connection, vpc_id, tags, check_mode=module.check_mode)
elif state == 'absent':
result = ensure_igw_absent(connection, vpc_id, check_mode=module.check_mode)
except AnsibleIGWException as e:
module.fail_json(msg=str(e))
module.exit_json(changed=result['changed'], **result.get('gateway', {}))
module.exit_json(**results)
if __name__ == '__main__':