def create_snapshot(self, context, share, name, description, force=False):
policy.check_policy(context, 'share', 'create_snapshot', share)
if ((not force) and (share['status'] != "available")):
msg = _("must be available")
raise exception.InvalidShare(reason=msg)
size = share['size']
try:
reservations = QUOTAS.reserve(context, snapshots=1, gigabytes=size)
except exception.OverQuota as e:
overs = e.kwargs['overs']
usages = e.kwargs['usages']
quotas = e.kwargs['quotas']
def _consumed(name):
return (usages[name]['reserved'] + usages[name]['in_use'])
if 'gigabytes' in overs:
msg = _("Quota exceeded for %(s_pid)s, tried to create "
"%(s_size)sG snapshot (%(d_consumed)dG of "
"%(d_quota)dG already consumed)")
LOG.warn(
msg % {
's_pid': context.project_id,
's_size': size,
'd_consumed': _consumed('gigabytes'),
'd_quota': quotas['gigabytes']
})
raise exception.ShareSizeExceedsAvailableQuota()
elif 'snapshots' in overs:
msg = _("Quota exceeded for %(s_pid)s, tried to create "
"snapshot (%(d_consumed)d snapshots "
"already consumed)")
LOG.warn(
msg % {
's_pid': context.project_id,
'd_consumed': _consumed('snapshots')
})
raise exception.SnapshotLimitExceeded(
allowed=quotas['snapshots'])
options = {
'share_id': share['id'],
'size': share['size'],
'user_id': context.user_id,
'project_id': context.project_id,
'status': "creating",
'progress': '0%',
'share_size': share['size'],
'display_name': name,
'display_description': description,
'share_proto': share['share_proto'],
'export_location': share['export_location']
}
try:
snapshot = self.db.share_snapshot_create(context, options)
QUOTAS.commit(context, reservations)
except Exception:
with excutils.save_and_reraise_exception():
try:
self.db.snapshot_delete(context, share['id'])
finally:
QUOTAS.rollback(context, reservations)
self.share_rpcapi.create_snapshot(context, share, snapshot)
return snapshot
def test_snapshot_limit_exceeded(self):
# verify response code for exception.SnapshotLimitExceeded
allowed = 777 # amount of allowed snapshots
e = exception.SnapshotLimitExceeded(allowed=allowed)
self.assertEqual(413, e.code)
self.assertIn(str(allowed), e.msg)
