def is_vlanid_used(vlan_id):
"""Checks if a vlanid is in use"""
LOG.debug("is_vlanid_used() called")
session = db.get_session()
try:
vlanid = (session.query(
l2network_models.VlanID).filter_by(vlan_id=vlan_id).one())
return vlanid["vlan_used"]
except exc.NoResultFound:
raise c_exc.VlanIDNotFound(vlan_id=vlan_id)
def delete_vlanid(vlan_id):
"""Deletes a vlanid entry from db"""
LOG.debug("delete_vlanid() called")
session = db.get_session()
try:
vlanid = (session.query(
l2network_models.VlanID).filter_by(vlan_id=vlan_id).one())
session.delete(vlanid)
session.flush()
return vlanid
except exc.NoResultFound:
raise c_exc.VlanIDNotFound(vlan_id=vlan_id)
def release_vlanid(vlan_id):
"""Sets the vlanid state to be unused"""
LOG.debug("release_vlanid() called")
session = db.get_session()
try:
vlanid = (session.query(
l2network_models.VlanID).filter_by(vlan_id=vlan_id).one())
vlanid["vlan_used"] = False
session.merge(vlanid)
session.flush()
return vlanid["vlan_used"]
except exc.NoResultFound:
raise c_exc.VlanIDNotFound(vlan_id=vlan_id)
return