uncloud/uncloud_net/services.py

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from django.db import transaction
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from .models import *
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from .selectors import *
from .tasks import *
from django_q.tasks import async_task, result
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@transaction.atomic
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def create_wireguard_vpn(owner, public_key, network_mask):
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# Check if the user has a membership.
#------------------------------------
# If yes, user is eligible for API access and 2 VPNs
# If user already has 2 VPNs, we deduct from the credit
# If deduction is higher than the allowed credit, we fail
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#
# Check if the user has suitable balance
# Create order
#
return create_wireguard_vpn_tech(owner, public_key, network_mask)
@transaction.atomic
def create_wireguard_vpn_tech(owner, public_key, network_mask):
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pool = get_suitable_pools(network_mask)[0]
count = pool.wireguardvpn_set.count()
# Try re-using previously used networks first
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try:
free_lease = WireGuardVPNFreeLeases.objects.get(vpnpool=pool)
vpn = WireGuardVPN.objects.create(owner=owner,
vpnpool=pool,
pool_index=free_lease.pool_index,
wireguard_public_key=public_key)
free_lease.delete()
except WireGuardVPNFreeLeases.DoesNotExist:
# First object
if count == 0:
vpn = WireGuardVPN.objects.create(owner=owner,
vpnpool=pool,
pool_index=0,
wireguard_public_key=public_key)
else: # Select last network and try +1 it
last_net = WireGuardVPN.objects.filter(vpnpool=pool).order_by('pool_index').last()
next_index = last_net.pool_index + 1
if next_index <= pool.max_pool_index:
vpn = WireGuardVPN.objects.create(owner=owner,
vpnpool=pool,
pool_index=next_index,
wireguard_public_key=public_key)
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config = pool.wireguard_config
server = pool.vpn_server_hostname
wg_name = pool.wg_name
async_task(configure_wireguard_server_on_host, (wg_name, config), queue=server)
return vpn