#
# Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com>
-from bt2 import native_bt, object, utils
+from bt2 import native_bt
+from bt2 import object as bt2_object
+from bt2 import utils as bt2_utils
from bt2 import message as bt2_message
import collections.abc
from bt2 import stream as bt2_stream
raise NotImplementedError
-class _UserComponentInputPortMessageIterator(object._SharedObject, _MessageIterator):
- _get_ref = staticmethod(native_bt.message_iterator_get_ref)
- _put_ref = staticmethod(native_bt.message_iterator_put_ref)
+class _UserComponentInputPortMessageIterator(
+ bt2_object._SharedObject, _MessageIterator
+):
+ @staticmethod
+ def _get_ref(ptr):
+ native_bt.message_iterator_get_ref(ptr)
+
+ @staticmethod
+ def _put_ref(ptr):
+ native_bt.message_iterator_put_ref(ptr)
def __init__(self, ptr):
self._current_msgs = []
status, msgs = native_bt.bt2_self_component_port_input_get_msg_range(
self._ptr
)
- utils._handle_func_status(
- status, 'unexpected error: cannot advance the message iterator'
+ bt2_utils._handle_func_status(
+ status, "unexpected error: cannot advance the message iterator"
)
self._current_msgs = msgs
self._at = 0
def can_seek_beginning(self):
(status, res) = native_bt.message_iterator_can_seek_beginning(self._ptr)
- utils._handle_func_status(
+ bt2_utils._handle_func_status(
status,
- 'cannot check whether or not message iterator can seek its beginning',
+ "cannot check whether or not message iterator can seek its beginning",
)
return res != 0
self._at = 0
status = native_bt.message_iterator_seek_beginning(self._ptr)
- utils._handle_func_status(status, 'cannot seek message iterator beginning')
+ bt2_utils._handle_func_status(status, "cannot seek message iterator beginning")
def can_seek_ns_from_origin(self, ns_from_origin):
- utils._check_int64(ns_from_origin)
+ bt2_utils._check_int64(ns_from_origin)
(status, res) = native_bt.message_iterator_can_seek_ns_from_origin(
self._ptr, ns_from_origin
)
- utils._handle_func_status(
+ bt2_utils._handle_func_status(
status,
- 'cannot check whether or not message iterator can seek given ns from origin',
+ "cannot check whether or not message iterator can seek given ns from origin",
)
return res != 0
def seek_ns_from_origin(self, ns_from_origin):
- utils._check_int64(ns_from_origin)
+ bt2_utils._check_int64(ns_from_origin)
# Forget about buffered messages, they won't be valid after seeking.
self._current_msgs.clear()
status = native_bt.message_iterator_seek_ns_from_origin(
self._ptr, ns_from_origin
)
- utils._handle_func_status(
- status, 'message iterator cannot seek given ns from origin'
+ bt2_utils._handle_func_status(
+ status, "message iterator cannot seek given ns from origin"
)
@property
self._ptr = ptr
def can_seek_forward(self, value):
- utils._check_bool(value)
+ bt2_utils._check_bool(value)
native_bt.self_message_iterator_configuration_set_can_seek_forward(
self._ptr, value
)
# This is extended by the user to implement component classes in Python. It
# is created for a given output port when an input port message iterator is
-# created on the input port on the other side of the connection. It is also
-# created when an output port message iterator is created on this output port.
+# created on the input port on the other side of the connection.
#
# Its purpose is to feed the messages that should go out through this output
# port.
except Exception:
raise
- utils._check_type(msg, bt2_message._MessageConst)
+ bt2_utils._check_type(msg, bt2_message._MessageConst)
# The reference we return will be given to the message array.
# However, the `msg` Python object may stay alive, if the user has kept
# read it and use that result.
# - Otherwise, the presence or absence of a `_user_seek_beginning`
# method indicates whether the iterator can seek beginning.
- if hasattr(self, '_user_can_seek_beginning'):
+ if hasattr(self, "_user_can_seek_beginning"):
can_seek_beginning = self._user_can_seek_beginning()
- utils._check_bool(can_seek_beginning)
+ bt2_utils._check_bool(can_seek_beginning)
return can_seek_beginning
else:
- return hasattr(self, '_user_seek_beginning')
+ return hasattr(self, "_user_seek_beginning")
def _bt_seek_beginning_from_native(self):
self._user_seek_beginning()
# - Otherwise, if there is a `_user_seek_ns_from_origin` method,
# we presume it's possible.
- if hasattr(self, '_user_can_seek_ns_from_origin'):
+ if hasattr(self, "_user_can_seek_ns_from_origin"):
can_seek_ns_from_origin = self._user_can_seek_ns_from_origin(ns_from_origin)
- utils._check_bool(can_seek_ns_from_origin)
+ bt2_utils._check_bool(can_seek_ns_from_origin)
return can_seek_ns_from_origin
else:
- return hasattr(self, '_user_seek_ns_from_origin')
+ return hasattr(self, "_user_seek_ns_from_origin")
def _bt_seek_ns_from_origin_from_native(self, ns_from_origin):
self._user_seek_ns_from_origin(ns_from_origin)
def _create_message_iterator(self, input_port):
- utils._check_type(input_port, bt2_port._UserComponentInputPort)
+ bt2_utils._check_type(input_port, bt2_port._UserComponentInputPort)
+
+ if not input_port.is_connected:
+ raise ValueError("input port is not connected")
(
status,
) = native_bt.bt2_message_iterator_create_from_message_iterator(
self._bt_ptr, input_port._ptr
)
- utils._handle_func_status(status, 'cannot create message iterator object')
+ bt2_utils._handle_func_status(status, "cannot create message iterator object")
assert msg_iter_ptr is not None
return _UserComponentInputPortMessageIterator(msg_iter_ptr)
def _create_event_message(self, event_class, parent, default_clock_snapshot=None):
- utils._check_type(event_class, bt2_event_class._EventClass)
+ bt2_utils._check_type(event_class, bt2_event_class._EventClass)
if event_class.stream_class.supports_packets:
- utils._check_type(parent, bt2_packet._Packet)
+ bt2_utils._check_type(parent, bt2_packet._Packet)
else:
- utils._check_type(parent, bt2_stream._Stream)
+ bt2_utils._check_type(parent, bt2_stream._Stream)
if default_clock_snapshot is not None:
if event_class.stream_class.default_clock_class is None:
raise ValueError(
- 'event messages in this stream must not have a default clock snapshot'
+ "event messages in this stream must not have a default clock snapshot"
)
- utils._check_uint64(default_clock_snapshot)
+ bt2_utils._check_uint64(default_clock_snapshot)
if event_class.stream_class.supports_packets:
ptr = native_bt.message_event_create_with_packet_and_default_clock_snapshot(
else:
if event_class.stream_class.default_clock_class is not None:
raise ValueError(
- 'event messages in this stream must have a default clock snapshot'
+ "event messages in this stream must have a default clock snapshot"
)
if event_class.stream_class.supports_packets:
)
if ptr is None:
- raise bt2._MemoryError('cannot create event message object')
+ raise bt2._MemoryError("cannot create event message object")
return bt2_message._EventMessage(ptr)
def _create_message_iterator_inactivity_message(self, clock_class, clock_snapshot):
- utils._check_type(clock_class, bt2_clock_class._ClockClass)
+ bt2_utils._check_type(clock_class, bt2_clock_class._ClockClass)
ptr = native_bt.message_message_iterator_inactivity_create(
self._bt_ptr, clock_class._ptr, clock_snapshot
)
if ptr is None:
- raise bt2._MemoryError('cannot create inactivity message object')
+ raise bt2._MemoryError("cannot create inactivity message object")
return bt2_message._MessageIteratorInactivityMessage(ptr)
def _create_stream_beginning_message(self, stream, default_clock_snapshot=None):
- utils._check_type(stream, bt2_stream._Stream)
+ bt2_utils._check_type(stream, bt2_stream._Stream)
ptr = native_bt.message_stream_beginning_create(self._bt_ptr, stream._ptr)
if ptr is None:
- raise bt2._MemoryError('cannot create stream beginning message object')
+ raise bt2._MemoryError("cannot create stream beginning message object")
msg = bt2_message._StreamBeginningMessage(ptr)
return msg
def _create_stream_end_message(self, stream, default_clock_snapshot=None):
- utils._check_type(stream, bt2_stream._Stream)
+ bt2_utils._check_type(stream, bt2_stream._Stream)
ptr = native_bt.message_stream_end_create(self._bt_ptr, stream._ptr)
if ptr is None:
- raise bt2._MemoryError('cannot create stream end message object')
+ raise bt2._MemoryError("cannot create stream end message object")
msg = bt2_message._StreamEndMessage(ptr)
return msg
def _create_packet_beginning_message(self, packet, default_clock_snapshot=None):
- utils._check_type(packet, bt2_packet._Packet)
+ bt2_utils._check_type(packet, bt2_packet._Packet)
if packet.stream.cls.packets_have_beginning_default_clock_snapshot:
if default_clock_snapshot is None:
"packet beginning messages in this stream must have a default clock snapshot"
)
- utils._check_uint64(default_clock_snapshot)
+ bt2_utils._check_uint64(default_clock_snapshot)
ptr = native_bt.message_packet_beginning_create_with_default_clock_snapshot(
self._bt_ptr, packet._ptr, default_clock_snapshot
)
ptr = native_bt.message_packet_beginning_create(self._bt_ptr, packet._ptr)
if ptr is None:
- raise bt2._MemoryError('cannot create packet beginning message object')
+ raise bt2._MemoryError("cannot create packet beginning message object")
return bt2_message._PacketBeginningMessage(ptr)
def _create_packet_end_message(self, packet, default_clock_snapshot=None):
- utils._check_type(packet, bt2_packet._Packet)
+ bt2_utils._check_type(packet, bt2_packet._Packet)
if packet.stream.cls.packets_have_end_default_clock_snapshot:
if default_clock_snapshot is None:
"packet end messages in this stream must have a default clock snapshot"
)
- utils._check_uint64(default_clock_snapshot)
+ bt2_utils._check_uint64(default_clock_snapshot)
ptr = native_bt.message_packet_end_create_with_default_clock_snapshot(
self._bt_ptr, packet._ptr, default_clock_snapshot
)
ptr = native_bt.message_packet_end_create(self._bt_ptr, packet._ptr)
if ptr is None:
- raise bt2._MemoryError('cannot create packet end message object')
+ raise bt2._MemoryError("cannot create packet end message object")
return bt2_message._PacketEndMessage(ptr)
def _create_discarded_events_message(
self, stream, count=None, beg_clock_snapshot=None, end_clock_snapshot=None
):
- utils._check_type(stream, bt2_stream._Stream)
+ bt2_utils._check_type(stream, bt2_stream._Stream)
if not stream.cls.supports_discarded_events:
- raise ValueError('stream class does not support discarded events')
+ raise ValueError("stream class does not support discarded events")
if stream.cls.discarded_events_have_default_clock_snapshots:
if beg_clock_snapshot is None or end_clock_snapshot is None:
raise ValueError(
- 'discarded events have default clock snapshots for this stream class'
+ "discarded events have default clock snapshots for this stream class"
+ )
+
+ bt2_utils._check_uint64(beg_clock_snapshot)
+ bt2_utils._check_uint64(end_clock_snapshot)
+
+ if beg_clock_snapshot > end_clock_snapshot:
+ raise ValueError(
+ "beginning default clock snapshot value ({}) is greater than end default clock snapshot value ({})".format(
+ beg_clock_snapshot, end_clock_snapshot
+ )
)
- utils._check_uint64(beg_clock_snapshot)
- utils._check_uint64(end_clock_snapshot)
- ptr = native_bt.message_discarded_events_create_with_default_clock_snapshots(
- self._bt_ptr, stream._ptr, beg_clock_snapshot, end_clock_snapshot
+ ptr = (
+ native_bt.message_discarded_events_create_with_default_clock_snapshots(
+ self._bt_ptr, stream._ptr, beg_clock_snapshot, end_clock_snapshot
+ )
)
else:
if beg_clock_snapshot is not None or end_clock_snapshot is not None:
raise ValueError(
- 'discarded events have no default clock snapshots for this stream class'
+ "discarded events have no default clock snapshots for this stream class"
)
ptr = native_bt.message_discarded_events_create(self._bt_ptr, stream._ptr)
if ptr is None:
- raise bt2._MemoryError('cannot discarded events message object')
+ raise bt2._MemoryError("cannot discarded events message object")
msg = bt2_message._DiscardedEventsMessage(ptr)
def _create_discarded_packets_message(
self, stream, count=None, beg_clock_snapshot=None, end_clock_snapshot=None
):
- utils._check_type(stream, bt2_stream._Stream)
+ bt2_utils._check_type(stream, bt2_stream._Stream)
if not stream.cls.supports_discarded_packets:
- raise ValueError('stream class does not support discarded packets')
+ raise ValueError("stream class does not support discarded packets")
if stream.cls.discarded_packets_have_default_clock_snapshots:
if beg_clock_snapshot is None or end_clock_snapshot is None:
raise ValueError(
- 'discarded packets have default clock snapshots for this stream class'
+ "discarded packets have default clock snapshots for this stream class"
+ )
+
+ bt2_utils._check_uint64(beg_clock_snapshot)
+ bt2_utils._check_uint64(end_clock_snapshot)
+
+ if beg_clock_snapshot > end_clock_snapshot:
+ raise ValueError(
+ "beginning default clock snapshot value ({}) is greater than end default clock snapshot value ({})".format(
+ beg_clock_snapshot, end_clock_snapshot
+ )
)
- utils._check_uint64(beg_clock_snapshot)
- utils._check_uint64(end_clock_snapshot)
- ptr = native_bt.message_discarded_packets_create_with_default_clock_snapshots(
- self._bt_ptr, stream._ptr, beg_clock_snapshot, end_clock_snapshot
+ ptr = (
+ native_bt.message_discarded_packets_create_with_default_clock_snapshots(
+ self._bt_ptr, stream._ptr, beg_clock_snapshot, end_clock_snapshot
+ )
)
else:
if beg_clock_snapshot is not None or end_clock_snapshot is not None:
raise ValueError(
- 'discarded packets have no default clock snapshots for this stream class'
+ "discarded packets have no default clock snapshots for this stream class"
)
ptr = native_bt.message_discarded_packets_create(self._bt_ptr, stream._ptr)
if ptr is None:
- raise bt2._MemoryError('cannot discarded packets message object')
+ raise bt2._MemoryError("cannot discarded packets message object")
msg = bt2_message._DiscardedPacketsMessage(ptr)
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