def _object_attr_path_iter(self, device_id, object_id, path_components):
"""Returns a generator of (object, attribute) tuples along the given path.
It won't pack objects into a TupleWrapper."""
if len(path_components) == 0:
return
raise path_components[0] in ROOT_KEYS or AssertionError
cur_object = get_root_prop(get_current_max_device(device_id), path_components[0])
for component in path_components[1:]:
if cur_object == None:
return
yield (cur_object, component)
if not (component.isdigit() and is_object_iterable(cur_object)):
raise AssertionError
index = int(component)
if index >= 0 and index < len(cur_object):
cur_object = cur_object[index]
else:
return
else:
try:
cur_object = getattr(cur_object, component)
except Exception:
return
return
def path_get_count(self, device_id, object_id, parameters):
if not isinstance(parameters, (str, unicode)):
raise AssertionError
device_context = self.device_contexts[device_id]
object_context = device_context[object_id]
current_path = object_context[PATH_KEY]
current_object = self._object_from_path(device_id,
object_id,
current_path,
must_exist=True)
property = None
if len(current_path) == 0:
if parameters in ROOT_KEYS:
property = get_root_prop(get_current_max_device(device_id),
parameters)
elif current_object != None:
if hasattr(current_object, parameters):
property = getattr(current_object, parameters)
count = property != None and unicode(
len(property) if is_object_iterable(property) else -1)
self.manager.send_message(device_id, object_id, 'path_count',
concatenate_strings((parameters, count)))
else:
self._raise(device_id, object_id,
'getcount: invalid property name')
def _object_attr_path_iter(self, device_id, object_id, path_components):
"""Returns a generator of (object, attribute) tuples along the given path.
It won't pack objects into a TupleWrapper."""
if len(path_components) == 0:
return
raise path_components[0] in ROOT_KEYS or AssertionError
cur_object = get_root_prop(get_current_max_device(device_id),
path_components[0])
for component in path_components[1:]:
if cur_object == None:
return
yield (cur_object, component)
if not (component.isdigit() and is_object_iterable(cur_object)):
raise AssertionError
index = int(component)
if index >= 0 and index < len(cur_object):
cur_object = cur_object[index]
else:
return
else:
try:
cur_object = getattr(cur_object, component)
except Exception:
return
return
def _property_object_from_path(self, path_components):
prev_component = path_components[0]
lom_object = get_root_prop(self._external_device, path_components[0])
for component in path_components[1:]:
try:
raise component.isdigit() and (is_object_iterable(lom_object)
or AssertionError)
if not prev_component in TUPLE_TYPES.keys():
raise AssertionError
lom_object = lom_object[int(component)]
else:
lom_object = getattr(lom_object, component)
if isinstance(lom_object, HIDDEN_TYPES):
raise AttributeError
except IndexError:
raise LomAttributeError("invalid index of component '%s'" %
prev_component)
except AttributeError:
raise LomAttributeError("invalid path component '%s'" %
component)
else:
prev_component = component
if not is_lom_object(lom_object, self._lom_classes):
raise LomObjectError("component '%s' is not an object" %
prev_component)
return lom_object
def _find_root_object_path(self, external_device, lom_object):
component = None
for key in ROOT_KEYS:
root_prop = get_root_prop(external_device, key)
if not is_object_iterable(root_prop):
if lom_object == root_prop:
component = key
break
elif lom_object in root_prop:
index = list(root_prop).index(lom_object)
component = u'%s %d' % (key, index)
break
return component
def _find_root_object_path(self, external_device, lom_object):
component = None
for key in ROOT_KEYS:
root_prop = get_root_prop(external_device, key)
if not is_object_iterable(root_prop):
if lom_object == root_prop:
component = key
break
elif lom_object in root_prop:
index = list(root_prop).index(lom_object)
component = u'%s %d' % (key, index)
break
return component
def path_get_count(self, device_id, object_id, parameters):
if not isinstance(parameters, (str, unicode)):
raise AssertionError
device_context = self.device_contexts[device_id]
object_context = device_context[object_id]
current_path = object_context[PATH_KEY]
current_object = self._object_from_path(device_id, object_id, current_path, must_exist=True)
property = None
if len(current_path) == 0:
if parameters in ROOT_KEYS:
property = get_root_prop(get_current_max_device(device_id), parameters)
elif current_object != None:
if hasattr(current_object, parameters):
property = getattr(current_object, parameters)
count = property != None and unicode(len(property) if is_object_iterable(property) else -1)
self.manager.send_message(device_id, object_id, 'path_count', concatenate_strings((parameters, count)))
else:
self._raise(device_id, object_id, 'getcount: invalid property name')
def _property_object_from_path(self, path_components):
prev_component = path_components[0]
lom_object = get_root_prop(self._external_device, path_components[0])
for component in path_components[1:]:
try:
raise component.isdigit() and (is_object_iterable(lom_object) or AssertionError)
if not prev_component in TUPLE_TYPES.keys():
raise AssertionError
lom_object = lom_object[int(component)]
else:
lom_object = getattr(lom_object, component)
except IndexError:
raise LomAttributeError("invalid index of component '%s'" % prev_component)
except AttributeError:
raise LomAttributeError("invalid path component '%s'" % component)
else:
prev_component = component
if not is_lom_object(lom_object, self._lom_classes):
raise LomObjectError("component '%s' is not an object" % prev_component)
return lom_object
