def add_component(
self,
component_class,
name,
params=None,
obj=None,
logging_level=bt2_logging.LoggingLevel.NONE,
):
if isinstance(component_class, bt2_component._SourceComponentClassConst):
cc_ptr = component_class._ptr
add_fn = native_bt.bt2_graph_add_source_component
cc_type = native_bt.COMPONENT_CLASS_TYPE_SOURCE
elif isinstance(component_class, bt2_component._FilterComponentClassConst):
cc_ptr = component_class._ptr
add_fn = native_bt.bt2_graph_add_filter_component
cc_type = native_bt.COMPONENT_CLASS_TYPE_FILTER
elif isinstance(component_class, bt2_component._SinkComponentClassConst):
cc_ptr = component_class._ptr
add_fn = native_bt.bt2_graph_add_sink_component
cc_type = native_bt.COMPONENT_CLASS_TYPE_SINK
elif issubclass(component_class, bt2_component._UserSourceComponent):
cc_ptr = component_class._bt_cc_ptr
add_fn = native_bt.bt2_graph_add_source_component
cc_type = native_bt.COMPONENT_CLASS_TYPE_SOURCE
elif issubclass(component_class, bt2_component._UserSinkComponent):
cc_ptr = component_class._bt_cc_ptr
add_fn = native_bt.bt2_graph_add_sink_component
cc_type = native_bt.COMPONENT_CLASS_TYPE_SINK
elif issubclass(component_class, bt2_component._UserFilterComponent):
cc_ptr = component_class._bt_cc_ptr
add_fn = native_bt.bt2_graph_add_filter_component
cc_type = native_bt.COMPONENT_CLASS_TYPE_FILTER
else:
raise TypeError(
"'{}' is not a component class".format(
component_class.__class__.__name__
)
)
utils._check_str(name)
utils._check_log_level(logging_level)
base_cc_ptr = component_class._bt_component_class_ptr()
if obj is not None and not native_bt.bt2_is_python_component_class(base_cc_ptr):
raise ValueError('cannot pass a Python object to a non-Python component')
if params is not None and not isinstance(params, (dict, bt2.MapValue)):
raise TypeError("'params' parameter is not a 'dict' or a 'bt2.MapValue'.")
params = bt2.create_value(params)
params_ptr = params._ptr if params is not None else None
status, comp_ptr = add_fn(
self._ptr, cc_ptr, name, params_ptr, obj, logging_level
)
utils._handle_func_status(status, 'cannot add component to graph')
assert comp_ptr
return bt2_component._create_component_from_const_ptr(comp_ptr, cc_type)
def __init__(self,
component_class,
object_name,
params=None,
method_obj=None):
if not isinstance(component_class,
_bt2_component()._ComponentClassConst):
err = False
try:
if not issubclass(component_class,
_bt2_component()._UserComponent):
err = True
except TypeError:
err = True
if err:
o = component_class
raise TypeError(
"'{}' is not a component class object".format(o))
utils._check_str(object_name)
if params is None:
params_ptr = native_bt.value_null
else:
params = bt2.create_value(params)
params_ptr = params._ptr
cc_ptr = component_class._bt_component_class_ptr()
assert cc_ptr is not None
if method_obj is not None and not native_bt.bt2_is_python_component_class(
cc_ptr):
raise ValueError(
'cannot pass a Python object to a non-Python component class')
ptr = native_bt.bt2_query_executor_create(cc_ptr, object_name,
params_ptr, method_obj)
if ptr is None:
raise bt2._MemoryError('cannot create query executor object')
super().__init__(ptr)
# Keep a reference of `method_obj` as the native query executor
# does not have any. This ensures that, when this object's
# query() method is called, the Python object still exists.
self._method_obj = method_obj
def __init__(self, component_class, params=None, obj=None):
if (not _is_source_comp_cls(component_class)
and not _is_filter_comp_cls(component_class)
and not _is_sink_comp_cls(component_class)):
raise TypeError("'{}' is not a component class".format(
component_class.__class__.__name__))
base_cc_ptr = component_class._bt_component_class_ptr()
if obj is not None and not native_bt.bt2_is_python_component_class(
base_cc_ptr):
raise ValueError(
'cannot pass a Python object to a non-Python component')
self._comp_cls = component_class
self._params = bt2.create_value(params)
self._obj = obj