def create_packet(self):
packet_ptr = native_bt.packet_create(self._ptr)
if packet_ptr is None:
raise bt2.CreationError('cannot create packet object')
return bt2.packet._Packet._create_from_ptr(packet_ptr)
def __init__(self):
ptr = native_bt.graph_create()
if ptr is None:
raise bt2.CreationError('cannot create graph object')
super().__init__(ptr)
def __init__(self):
ptr = native_bt.query_executor_create()
if ptr is None:
raise bt2.CreationError('cannot create query executor object')
super().__init__(ptr)
def __init__(self,
name,
id=None,
log_level=None,
emf_uri=None,
context_field_class=None,
payload_field_class=None):
utils._check_str(name)
ptr = native_bt.event_class_create(name)
if ptr is None:
raise bt2.CreationError('cannot create event class object')
super().__init__(ptr)
if id is not None:
self.id = id
if log_level is not None:
self.log_level = log_level
if emf_uri is not None:
self.emf_uri = emf_uri
if context_field_class is not None:
self.context_field_class = context_field_class
if payload_field_class is not None:
self.payload_field_class = payload_field_class
def __init__(self, name=None, id=None, packet_context_field_class=None,
event_header_field_class=None, event_context_field_class=None,
event_classes=None):
ptr = native_bt.stream_class_create_empty(None)
if ptr is None:
raise bt2.CreationError('cannot create stream class object')
super().__init__(ptr)
if name is not None:
self.name = name
if id is not None:
self.id = id
if packet_context_field_class is not None:
self.packet_context_field_class = packet_context_field_class
if event_header_field_class is not None:
self.event_header_field_class = event_header_field_class
if event_context_field_class is not None:
self.event_context_field_class = event_context_field_class
if event_classes is not None:
for event_class in event_classes:
self.add_event_class(event_class)
def __init__(self,
name,
description=None,
frequency=None,
precision=None,
offset=None,
is_absolute=None,
uuid=None):
utils._check_str(name)
ptr = native_bt.ctf_clock_create(name)
if ptr is None:
raise bt2.CreationError('cannot create CTF writer clock object')
super().__init__(ptr)
if description is not None:
self.description = description
if frequency is not None:
self.frequency = frequency
if precision is not None:
self.precision = precision
if offset is not None:
self.offset = offset
if is_absolute is not None:
self.is_absolute = is_absolute
if uuid is not None:
self.uuid = uuid
def __call__(self):
event_ptr = native_bt.ctf_event_create(self._ptr)
if event_ptr is None:
raise bt2.CreationError('cannot create event field object')
return bt2.event._create_from_ptr(event_ptr)
def __init__(self, name=None, native_byte_order=None, env=None,
packet_header_field_class=None, clock_classes=None,
stream_classes=None):
ptr = native_bt.trace_create()
if ptr is None:
raise bt2.CreationError('cannot create trace class object')
super().__init__(ptr)
if name is not None:
self.name = name
if native_byte_order is not None:
self.native_byte_order = native_byte_order
if packet_header_field_class is not None:
self.packet_header_field_class = packet_header_field_class
if env is not None:
for key, value in env.items():
self.env[key] = value
if clock_classes is not None:
for clock_class in clock_classes:
self.add_clock_class(clock_class)
if stream_classes is not None:
for stream_class in stream_classes:
self.add_stream_class(stream_class)
def __init__(self,
name,
id=None,
context_field_type=None,
payload_field_type=None,
attributes=None):
utils._check_str(name)
ptr = native_bt.ctf_event_class_create(name)
if ptr is None:
raise bt2.CreationError('cannot create event class object')
super().__init__(ptr)
if id is not None:
self.id = id
if context_field_type is not None:
self.context_field_type = context_field_type
if payload_field_type is not None:
self.payload_field_type = payload_field_type
if attributes is not None:
for name, value in attributes.items():
self.attributes[name] = value
def __init__(cls, class_name, bases, namespace, **kwargs):
super().__init__(class_name, bases, namespace)
# skip our own bases; they are never directly instantiated by the user
own_bases = (
'_UserComponent',
'_UserFilterSinkComponent',
'_UserSourceComponent',
'_UserFilterComponent',
'_UserSinkComponent',
)
if class_name in own_bases:
return
comp_cls_name = kwargs.get('name', class_name)
utils._check_str(comp_cls_name)
comp_cls_descr = None
comp_cls_help = None
if hasattr(cls, '__doc__') and cls.__doc__ is not None:
utils._check_str(cls.__doc__)
docstring = _trim_docstring(cls.__doc__)
lines = docstring.splitlines()
if len(lines) >= 1:
comp_cls_descr = lines[0]
if len(lines) >= 3:
comp_cls_help = '\n'.join(lines[2:])
iter_cls = kwargs.get('notification_iterator_class')
if _UserSourceComponent in bases:
_UserComponentType._set_iterator_class(cls, iter_cls)
cc_ptr = native_bt.py3_component_class_source_create(
cls, comp_cls_name, comp_cls_descr, comp_cls_help)
elif _UserFilterComponent in bases:
_UserComponentType._set_iterator_class(cls, iter_cls)
cc_ptr = native_bt.py3_component_class_filter_create(
cls, comp_cls_name, comp_cls_descr, comp_cls_help)
elif _UserSinkComponent in bases:
if not hasattr(cls, '_consume'):
raise bt2.IncompleteUserClass(
"cannot create component class '{}': missing a _consume() method"
.format(class_name))
cc_ptr = native_bt.py3_component_class_sink_create(
cls, comp_cls_name, comp_cls_descr, comp_cls_help)
else:
raise bt2.IncompleteUserClass(
"cannot find a known component class base in the bases of '{}'"
.format(class_name))
if cc_ptr is None:
raise bt2.CreationError(
"cannot create component class '{}'".format(class_name))
cls._cc_ptr = cc_ptr
def __init__(self, clock_class_ptr, cycles):
utils._check_uint64(cycles)
ptr = native_bt.ctf_clock_value_create(clock_class_ptr, cycles)
if ptr is None:
raise bt2.CreationError('cannot create clock value object')
super().__init__(ptr)
def __init__(self, packet):
utils._check_type(packet, bt2.packet._Packet)
ptr = native_bt.message_packet_end_create(packet._ptr)
if ptr is None:
raise bt2.CreationError('cannot create packet end message object')
super().__init__(ptr)
def __init__(self, stream):
utils._check_type(stream, bt2.stream._Stream)
ptr = native_bt.message_stream_end_create(stream._ptr)
if ptr is None:
raise bt2.CreationError('cannot create stream end message object')
super().__init__(ptr)
def __init__(self, path):
utils._check_str(path)
ptr = native_bt.ctf_writer_create(path)
if ptr is None:
raise bt2.CreationError('cannot create CTF writer object')
super().__init__(ptr)
def __init__(self, stream):
utils._check_type(stream, bt2.stream._Stream)
ptr = native_bt.notification_stream_end_create(stream._ptr)
if ptr is None:
raise bt2.CreationError(
'cannot create end of stream notification object')
super().__init__(ptr)
def __init__(self, trace):
utils._check_type(trace, bt2.Trace)
ptr = native_bt.notification_new_trace_create(trace._ptr)
if ptr is None:
raise bt2.CreationError(
'cannot create new trace notification object')
super().__init__(ptr)
def __init__(self, stream_class):
utils._check_type(stream_class, bt2.StreamClass)
ptr = native_bt.notification_new_stream_class_create(stream_class._ptr)
if ptr is None:
raise bt2.CreationError(
'cannot create new stream class notification object')
super().__init__(ptr)
def __init__(self, event):
utils._check_type(event, bt2.event._Event)
ptr = native_bt.notification_event_create(event._ptr)
if ptr is None:
raise bt2.CreationError(
'cannot create trace event notification object')
super().__init__(ptr)
def __init__(self, packet):
utils._check_type(packet, bt2.packet._Packet)
ptr = native_bt.notification_packet_end_create(packet._ptr)
if ptr is None:
raise bt2.CreationError(
'cannot create end of packet notification object')
super().__init__(ptr)
def __call__(self, params=None, name=None):
params = bt2.create_value(params)
comp_ptr = native_bt.component_create_with_init_method_data(
self._ptr, name, params._ptr, None)
if comp_ptr is None:
raise bt2.CreationError('cannot create component object')
return _create_generic_component_from_ptr(comp_ptr)
def _create_input_port_message_iterator(self, input_port):
utils._check_type(input_port, bt2_port._UserComponentInputPort)
msg_iter_ptr = native_bt.self_component_port_input_message_iterator_create_from_message_iterator(
self._bt_ptr, input_port._ptr)
if msg_iter_ptr is None:
raise bt2.CreationError('cannot create message iterator object')
return _UserComponentInputPortMessageIterator(msg_iter_ptr)
def __call__(self, name=None):
if name is not None:
utils._check_str(name)
stream_ptr = native_bt.ctf_stream_create(self._ptr, name)
if stream_ptr is None:
raise bt2.CreationError('cannot create stream object')
return bt2.stream._create_from_ptr(stream_ptr)
def create_notification_iterator(self):
iter_ptr = native_bt.component_filter_create_notification_iterator_with_init_method_data(
self._ptr, None)
if iter_ptr is None:
raise bt2.CreationError(
'cannot create notification iterator object')
return bt2.notification_iterator._GenericNotificationIterator._create_from_ptr(
iter_ptr)
def __init__(self, clock_class_priorities=None):
ptr = native_bt.clock_class_priority_map_create()
if ptr is None:
raise bt2.CreationError(
'cannot create clock class priority map object')
super().__init__(ptr)
if clock_class_priorities is not None:
for clock_class, priority in clock_class_priorities.items():
self[clock_class] = priority
def __call__(self, value=None):
field_ptr = native_bt.ctf_field_create(self._ptr)
if field_ptr is None:
raise bt2.CreationError('cannot create {} field object'.format(self._NAME.lower()))
field = bt2.fields._create_from_ptr(field_ptr)
if value is not None:
if not isinstance(field, (bt2.fields._IntegerField, bt2.fields._FloatingPointNumberField, bt2.fields._StringField)):
raise bt2.Error('cannot assign an initial value to a {} field object'.format(field._NAME))
field.value = value
return field
def __init__(self, cc_prio_map=None):
if cc_prio_map is not None:
utils._check_type(
cc_prio_map,
bt2.clock_class_priority_map.ClockClassPriorityMap)
cc_prio_map_ptr = cc_prio_map._ptr
else:
cc_prio_map_ptr = None
ptr = native_bt.message_inactivity_create(cc_prio_map_ptr)
if ptr is None:
raise bt2.CreationError('cannot create inactivity message object')
super().__init__(ptr)
def __call__(cls, *args, **kwargs):
# create instance
self = cls.__new__(cls)
# assign native component pointer received from caller
self._ptr = kwargs.get('__comp_ptr')
name = kwargs.get('name')
if self._ptr is None:
# called from Python code
self._belongs_to_native_component = False
# py3_component_create() will call self.__init__() with the
# desired arguments and keyword arguments. This is needed
# because functions such as
# bt_component_sink_set_minimum_input_count() can only be
# called _during_ the bt_component_create() call (in
# Python words: during self.__init__()).
#
# The arguments and keyword arguments to use for
# self.__init__() are put in the object itself to find them
# from the bt_component_create() function.
self._init_args = args
self._init_kwargs = kwargs
native_bt.py3_component_create(cls._cc_ptr, self, name)
# At this point, self._ptr should be set to non-None. If
# it's not, an error occured during the
# native_bt.py3_component_create() call. We consider this a
# creation error.
if self._ptr is None:
raise bt2.CreationError(
"cannot create component object from component class '{}'".
format(cls.__name__))
else:
# Called from non-Python code (within
# bt_component_create()): call __init__() here, after
# removing the __comp_ptr keyword argument which is just for
# this __call__() method.
self._belongs_to_native_component = True
del kwargs['__comp_ptr']
# inject `name` into the keyword arguments
kwargs['name'] = self.name
self.__init__(*args, **kwargs)
return self
def create_message_iterator(self,
message_types=None,
colander_component_name=None):
msg_types = bt2.message._msg_types_from_msg_classes(message_types)
if colander_component_name is not None:
utils._check_str(colander_component_name)
msg_iter_ptr = native_bt.py3_create_output_port_msg_iter(
int(self._ptr), colander_component_name, msg_types)
if msg_iter_ptr is None:
raise bt2.CreationError(
'cannot create output port message iterator')
return bt2.message_iterator._OutputPortMessageIterator._create_from_ptr(
msg_iter_ptr)
def __init__(self, event, cc_prio_map=None):
utils._check_type(event, bt2.event._Event)
if cc_prio_map is not None:
utils._check_type(
cc_prio_map,
bt2.clock_class_priority_map.ClockClassPriorityMap)
cc_prio_map_ptr = cc_prio_map._ptr
else:
cc_prio_map_ptr = None
ptr = native_bt.notification_event_create(event._ptr, cc_prio_map_ptr)
if ptr is None:
raise bt2.CreationError('cannot create event notification object')
super().__init__(ptr)
def create_notification_iterator(self,
notification_types=None,
colander_component_name=None):
notif_types = bt2.notification._notif_types_from_notif_classes(
notification_types)
if colander_component_name is not None:
utils._check_str(colander_component_name)
notif_iter_ptr = native_bt.py3_create_output_port_notif_iter(
int(self._ptr), colander_component_name, notif_types)
if notif_iter_ptr is None:
raise bt2.CreationError(
'cannot create output port notification iterator')
return bt2.notification_iterator._OutputPortNotificationIterator._create_from_ptr(
notif_iter_ptr)
