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12180 available objects api (#12935)

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* Introduce AvailableObjectsView and refactor 'available objects' API views

* Restore advisory PostgreSQL locks

* Move get_next_available_prefix()

* Apply OpenAPI decorators for get() and post()
This commit is contained in:
Jeremy Stretch
2023-06-20 15:04:10 -04:00
committed by GitHub
parent e7edccd9ba
commit bace24b68e
3 changed files with 226 additions and 245 deletions
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22
netbox/ipam/utils.py
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@ -1,7 +1,15 @@
import netaddr
from .constants import *
from .models import ASN, Prefix, VLAN
from .models import Prefix, VLAN
__all__ = (
'add_available_ipaddresses',
'add_available_vlans',
'add_requested_prefixes',
'get_next_available_prefix',
'rebuild_prefixes',
)
def add_requested_prefixes(parent, prefix_list, show_available=True, show_assigned=True):
@ -184,3 +192,15 @@ def rebuild_prefixes(vrf):
# Final flush of any remaining Prefixes
Prefix.objects.bulk_update(update_queue, ['_depth', '_children'])
def get_next_available_prefix(ipset, prefix_size):
"""
Given a prefix length, allocate the next available prefix from an IPSet.
"""
for available_prefix in ipset.iter_cidrs():
if prefix_size >= available_prefix.prefixlen:
allocated_prefix = f"{available_prefix.network}/{prefix_size}"
ipset.remove(allocated_prefix)
return allocated_prefix
return None