def _acquire_lock(self):
LOCK_TIMEOUT = timedelta(minutes=120)
WAIT_STEP = 15
vms = Internals.get(name='virtual_machines')
if vms is None:
vms = Internals({'name': 'virtual_machines'})
vms.save()
locked_vm = False
while not locked_vm:
for i, label in enumerate(self.labels):
self._use_vm(i)
last_locked = "{}.last_locked".format(self.vm_record)
if vms.update_value([self.vm_record, 'locked'], True):
vms.update_value([self.vm_record, 'last_locked'],
datetime.now())
locked_vm = True
break
expired_date = datetime.now() - LOCK_TIMEOUT
if vms._update({'$set': {
last_locked: datetime.now()
}}, {last_locked: {
'$lt': expired_date
}}):
vms.update_value([self.vm_record, 'locked'], True)
locked_vm = True
break
if not locked_vm:
sleep(WAIT_STEP)
def _acquire_lock(self):
LOCK_TIMEOUT = timedelta(minutes=120)
WAIT_STEP = 15
vms = Internals.get(name='virtual_machines')
if vms is None:
vms = Internals({'name': 'virtual_machines'})
vms.save()
last_locked = "{}.last_locked".format(self.vm_record)
while True:
if vms.update_value([self.vm_record, 'locked'], True):
vms.update_value([self.vm_record, 'last_locked'],
datetime.now())
break
expired_date = datetime.now() - LOCK_TIMEOUT
if vms._update({'$set': {
last_locked: datetime.now()
}}, {last_locked: {
'$lt': expired_date
}}):
vms.update_value([self.vm_record, 'locked'], True)
break
sleep(WAIT_STEP)
def create_internals():
updates = Internals.get(name='updates')
if updates is None:
updates = Internals({
'name': 'updates',
'last_update': time()
})
updates.save()