def accept_vpc_peerings(target_peerings: list, metadata: dict, dryrun: bool):
"""
Loops through a list of peerings, with existing peering id, to accept them.
Requests, accepts and tags them.
Repairs any half open peerings.
Example target_peerings:
```
[
[
{
"account_id": "415432961280",
"peering_id": "pcx-41u5h345h2",
"vpc_id": "vpc-e08fb484",
"region": "ap-southeast-2",
"cidr_overrides": [
"10.53.101.0/27"
],
"peering_tags": [
{
"peerd_az_affinity": "0"
}
]
},
{
"account_id": 415432961280,
"peering_id": "pcx-41u5h345h2",
"vpc_id": "vpc-7a83b81e",
"region": "ap-southeast-2"
}
]
]
```
:param target_peerings: A list of lists representing the requester and accepter for each peering.
:type target_peerings: list
:param metadata: A dictionary with the environment, owner, etc for tagging
:type metadata: list
"""
for peering_descriptor in target_peerings:
# Unpack some common variables
account_id = peering_descriptor[0]['account_id']
vpc_id = peering_descriptor[0]['vpc_id']
region = peering_descriptor[0]['region']
local_tags = peering_descriptor[0].get('peering_tags', {})
remote_account_id = peering_descriptor[1]['account_id']
remote_vpc_id = peering_descriptor[1]['vpc_id']
remote_region = peering_descriptor[1]['region']
remote_tags = peering_descriptor[1].get('peering_tags', {})
peering_id = peering_descriptor[1]['peering_id']
tags = peering_descriptor[1]['tags']
try:
# Accept the VPC Peering
LOGGER.info(
f"Accepting peering request {peering_id} between {account_id} {vpc_id} {region} and "
f"{remote_account_id} {remote_vpc_id} {remote_region}")
ec2_client = aws_client(remote_account_id, 'ec2', remote_region)
# Wait until the peering exists
# The AWS API is eventually consistent and we need to wait.
LOGGER.info(f'Waiting for peering to exist...')
ec2_client.get_waiter('vpc_peering_connection_exists').wait(
VpcPeeringConnectionIds=[peering_id],
WaiterConfig={'Delay': 5})
# Tag the VPC Peering
tags['Name'] = f'peerd peering to {account_id} {vpc_id} {region}'
tags['peerd_role'] = 'accepter'
tag_resource(ec2_client, peering_id, tags, dryrun=dryrun)
# Accept the peering
try:
ec2_client.accept_vpc_peering_connection(
VpcPeeringConnectionId=peering_id, DryRun=dryrun)
except ClientError as err:
if err.response['Error']['Code'] == 'DryRunOperation':
continue
raise
except BaseException:
LOGGER.error("Unexpected error: %s",
sys.exc_info()[1],
exc_info=True)
continue
LOGGER.info(
f"Successfully accepted peering {peering_id} between {account_id} {vpc_id} "
f"{region} and {remote_account_id} {remote_vpc_id} {remote_region}"
)
'Name':
f'peerd peering to {remote_account_id} {remote_vpc_id} {remote_region}',
'resource_owner': metadata['resource_owner'],
'business_unit': metadata['business_unit'],
'service_name': metadata['service_name'],
'peerd_created': 'true',
'peerd_support': metadata['support'],
'peerd_datetime': str(datetime.now()),
'peerd_role': 'requester',
'peerd_environment': metadata['environment']
}
for key, value in local_tags.items():
tags[key] = value
for key, value in remote_tags.items():
tags[key] = value
tag_resource(ec2_client, peering_id, tags, dryrun=dryrun)
# Add the peering to the list of peerings that we will need to accept
peering_descriptor_copy = deepcopy(peering_descriptor)
peering_descriptor_copy[1]['peering_id'] = peering_id
peering_descriptor_copy[1]['tags'] = tags
pending_acceptance_peerings.append(peering_descriptor_copy)
except BaseException:
LOGGER.error("Unexpected error: %s",
sys.exc_info()[1],
exc_info=True)
continue
LOGGER.info(
f"Successfully created peering request {peering_id} between {account_id} {vpc_id} "