def _allocations_to_remove(self, dates_before, dates_after, max_hosts,
hypervisor_properties, resource_properties,
allocs):
allocs_to_remove = []
requested_host_ids = [host['id'] for host in
self._filter_hosts_by_properties(
hypervisor_properties, resource_properties)]
for alloc in allocs:
if alloc['compute_host_id'] not in requested_host_ids:
allocs_to_remove.append(alloc)
continue
if (dates_before['start_date'] > dates_after['start_date'] or
dates_before['end_date'] < dates_after['end_date']):
reserved_periods = db_utils.get_reserved_periods(
alloc['compute_host_id'],
dates_after['start_date'],
dates_after['end_date'],
datetime.timedelta(seconds=1))
max_start = max(dates_before['start_date'],
dates_after['start_date'])
min_end = min(dates_before['end_date'],
dates_after['end_date'])
if not (len(reserved_periods) == 0 or
(len(reserved_periods) == 1 and
reserved_periods[0][0] == max_start and
reserved_periods[0][1] == min_end)):
allocs_to_remove.append(alloc)
continue
kept_hosts = len(allocs) - len(allocs_to_remove)
if kept_hosts > max_hosts:
allocs_to_remove.extend(
[allocation for allocation in allocs
if allocation not in allocs_to_remove
][:(kept_hosts - max_hosts)]
)
return allocs_to_remove
def _allocations_to_remove(self, dates_before, dates_after, allocs,
amount):
"""Find candidate floating IP allocations to remove."""
allocs_to_remove = []
for alloc in allocs:
is_extension = (
dates_before['start_date'] > dates_after['start_date'] or
dates_before['end_date'] < dates_after['end_date'])
if is_extension:
reserved_periods = db_utils.get_reserved_periods(
alloc['floatingip_id'],
dates_after['start_date'],
dates_after['end_date'],
datetime.timedelta(seconds=1),
resource_type='floatingip')
max_start = max(dates_before['start_date'],
dates_after['start_date'])
min_end = min(dates_before['end_date'],
dates_after['end_date'])
if not (len(reserved_periods) == 0 or
(len(reserved_periods) == 1 and
reserved_periods[0][0] == max_start and
reserved_periods[0][1] == min_end)):
allocs_to_remove.append(alloc)
continue
allocs_to_keep = [a for a in allocs if a not in allocs_to_remove]
if len(allocs_to_keep) > amount:
allocs_to_remove.extend(
allocs_to_keep[:(len(allocs_to_keep) - amount)])
return allocs_to_remove