def _get_from_manager(resource):
# catch client side errors
try:
res = resource.manager.get(resource.id)
except Exception as e:
if getattr(e, "code", 400) == 404:
raise exceptions.GetResourceNotFound(resource=resource)
raise exceptions.GetResourceFailure(resource=resource, err=e)
# catch abnormal status, such as "no valid host" for servers
status = get_status(res)
if status in ("DELETED", "DELETE_COMPLETE"):
raise exceptions.GetResourceNotFound(resource=res)
if status in error_statuses:
raise exceptions.GetResourceErrorStatus(resource=res,
status=status, fault="")
return res
def _get_from_manager(resource):
# catch client side errors
try:
res = resource.manager.get(resource.id)
except Exception as e:
if getattr(e, 'code', 400) == 404:
raise exceptions.GetResourceNotFound(resource=resource)
raise exceptions.GetResourceFailure(resource=resource, err=e)
# catch abnormal status, such as "no valid host" for servers
status = res.status.upper()
if status == "DELETED":
raise exceptions.GetResourceNotFound(resource=res)
if status in error_statuses:
if isinstance(res.manager, servers.ServerManager):
msg = res.fault['message']
else:
msg = ''
raise exceptions.GetResourceErrorStatus(resource=res,
status=status,
fault=msg)
return res
def wait_for_status(resource,
ready_statuses,
failure_statuses=None,
status_attr="status",
update_resource=None,
timeout=60,
check_interval=1,
check_deletion=False):
resource_repr = getattr(resource, "name", repr(resource))
if not isinstance(ready_statuses, (set, list, tuple)):
raise ValueError("Ready statuses should be supplied as set, list or "
"tuple")
if failure_statuses and not isinstance(failure_statuses,
(set, list, tuple)):
raise ValueError("Failure statuses should be supplied as set, list or "
"tuple")
# make all statuses upper case
ready_statuses = set([s.upper() for s in ready_statuses or []])
failure_statuses = set([s.upper() for s in failure_statuses or []])
if len(ready_statuses & failure_statuses) > 0:
raise ValueError(
"Can't wait for resource's %s status. Ready and Failure"
"statuses conflict." % resource_repr)
if not ready_statuses:
raise ValueError("Can't wait for resource's %s status. No ready "
"statuses provided" % resource_repr)
if not update_resource:
raise ValueError(
"Can't wait for resource's %s status. No update method." %
resource_repr)
start = time.time()
latest_status = get_status(resource, status_attr)
latest_status_update = start
while True:
try:
resource = update_resource(resource)
except exceptions.GetResourceNotFound:
if check_deletion:
return
else:
raise
status = get_status(resource, status_attr)
if status != latest_status:
current_time = time.time()
delta = current_time - latest_status_update
LOG.debug(
"Waiting for resource %(resource)s. Status changed: "
"%(latest)s => %(current)s in %(delta)s" % {
"resource": resource_repr,
"latest": latest_status,
"current": status,
"delta": delta
})
latest_status = status
latest_status_update = current_time
if status in ready_statuses:
return resource
if status in failure_statuses:
raise exceptions.GetResourceErrorStatus(
resource=resource,
status=status,
fault="Status in failure list %s" % str(failure_statuses))
time.sleep(check_interval)
if time.time() - start > timeout:
raise exceptions.TimeoutException(
desired_status="('%s')" % "', '".join(ready_statuses),
resource_name=resource_repr,
resource_type=resource.__class__.__name__,
resource_id=getattr(resource, "id", "<no id>"),
resource_status=get_status(resource))
