def test__success(self):
"""success"""
tgw = TGWPeering()
# mock setup
sample_tgw1 = tgw.ec2_client.create_transit_gateway()
peers = tgw.get_tgw_peers(
tgw_id=sample_tgw1["TransitGateway"]["TransitGatewayId"],
states=[AttachmentState.AVAILABLE],
)
assert len(peers) == 0
# clean-up
tgw.ec2_client.delete_transit_gateway(
TransitGatewayId=sample_tgw1["TransitGateway"]["TransitGatewayId"])
def test__fail__client_error(self):
"""fail with client error"""
tgw = TGWPeering()
stubber = Stubber(tgw.ec2_client)
stubber.add_client_error(
"describe_transit_gateway_peering_attachments",
service_error_code="InternalException",
service_message="this is test error",
)
stubber.activate()
peers = tgw.get_tgw_peers(
tgw_id="",
states=[AttachmentState.AVAILABLE],
)
assert len(peers) == 0
stubber.deactivate()
def test__success(self):
"""success"""
tgw = TGWPeering()
# mock setup
sample_tgw1 = tgw.ec2_client.create_transit_gateway()
sample_tgw2 = tgw.ec2_client.create_transit_gateway()
sample_peer = TGWPeer(
transit_gateway=sample_tgw2["TransitGateway"]["TransitGatewayId"],
aws_region=environ.get("AWS_DEFAULT_REGION"),
)
attachment = tgw.create_tgw_peering_attachment(
tgw_id=sample_tgw1["TransitGateway"]["TransitGatewayId"],
peer=sample_peer,
peer_account_id=self.owner,
)
sample_peer.attachment_id = attachment["TransitGatewayAttachmentId"]
# test attachment is tagged with solution identifier
assert attachment["Tags"][0]["Key"] == "SolutionId"
assert attachment["Tags"][0]["Value"] == environ.get("SOLUTION_ID")
peers = tgw.get_tgw_peers(
tgw_id=sample_tgw1["TransitGateway"]["TransitGatewayId"],
states=[AttachmentState.AVAILABLE],
)
assert isinstance(peers[0], TGWPeer)
assert peers[0] == sample_peer
# clean-up
tgw.ec2_client.delete_transit_gateway_peering_attachment(
TransitGatewayAttachmentId=attachment["TransitGatewayAttachmentId"]
)
tgw.ec2_client.delete_transit_gateway(
TransitGatewayId=sample_tgw1["TransitGateway"]["TransitGatewayId"])
tgw.ec2_client.delete_transit_gateway(
TransitGatewayId=sample_tgw2["TransitGateway"]["TransitGatewayId"])
async def tag_event_router(tag_value: str) -> None:
"""Handles tag events for transit gateway
Args:
tag_value (str): tag value for the tgw tag-change event
"""
logger.debug("handling tgw tag event")
hub_tgw_id = environ.get("TGW_ID")
tgw = TGWPeering()
current_peers: list[TGWPeer] = tgw.get_tgw_peers(
tgw_id=hub_tgw_id,
states=[
AttachmentState.AVAILABLE,
AttachmentState.INITIATING,
AttachmentState.INITIATING_REQUEST,
AttachmentState.PENDING,
AttachmentState.PENDING_ACCEPTANCE,
AttachmentState.MODIFYING,
],
)
logger.debug("current tgw peers %s", current_peers)
current_peer_tgw: list[str] = [i.transit_gateway for i in current_peers]
# case of empty tag, delete all peering attachments
if tag_value.upper() == "DELETE":
for peer in current_peers:
try:
tgw.delete_tgw_peering_attachment(peer)
except ClientError as err:
logger.warning(str(err))
return
# for all other cases, create new and delete old peering attachments
peer_list = tag_value.split("/")
for peer in peer_list:
peer = TGWPeer(transit_gateway=peer.split("_")[0],
aws_region=peer.split("_")[1])
# creation of new peering attachments
if peer.transit_gateway not in current_peer_tgw:
try:
tgw.create_tgw_peering_attachment(tgw_id=hub_tgw_id, peer=peer)
except ClientError as err:
logger.warning(str(err))
else:
current_peer_tgw.remove(peer.transit_gateway)
# deleting old peering attachments
for peer in current_peers:
if peer.transit_gateway in current_peer_tgw:
try:
tgw.delete_tgw_peering_attachment(peer)
except (KeyError, ClientError) as err:
logger.warning(str(err))
# accept all peering requests
peering_requests: list[TGWPeer] = tgw.get_tgw_peers(
tgw_id=hub_tgw_id,
states=[
AttachmentState.INITIATING,
AttachmentState.INITIATING_REQUEST,
],
)
coros = [
tgw.accept_tgw_peering_attachment(peer) for peer in peering_requests
]
await asyncio.gather(*coros, return_exceptions=True) # fail silently
logger.info(
"peering requests accepted, for failed requests turn debug mode and check logs"
)