| 1 | # SPDX-License-Identifier: GPL-2.0-only |
| 2 | # |
| 3 | # Copyright (C) 2020 EfficiOS Inc. |
| 4 | # |
| 5 | |
| 6 | import bt2 |
| 7 | |
| 8 | |
| 9 | class TheSourceIterator(bt2._UserMessageIterator): |
| 10 | def __init__(self, config, port): |
| 11 | tc, sc, ec = port.user_data |
| 12 | |
| 13 | trace = tc() |
| 14 | stream = trace.create_stream(sc, name="the-stream") |
| 15 | |
| 16 | self._msgs = [ |
| 17 | self._create_stream_beginning_message(stream), |
| 18 | self._create_event_message(ec, stream), |
| 19 | self._create_stream_end_message(stream), |
| 20 | ] |
| 21 | |
| 22 | def __next__(self): |
| 23 | if len(self._msgs) == 0: |
| 24 | raise StopIteration |
| 25 | |
| 26 | return self._msgs.pop(0) |
| 27 | |
| 28 | |
| 29 | @bt2.plugin_component_class |
| 30 | class TheSource(bt2._UserSourceComponent, message_iterator_class=TheSourceIterator): |
| 31 | def __init__(self, config, params, obj): |
| 32 | tc = self._create_trace_class() |
| 33 | sc = tc.create_stream_class() |
| 34 | ec = sc.create_event_class(name="the-event") |
| 35 | self._add_output_port("out", user_data=(tc, sc, ec)) |
| 36 | |
| 37 | |
| 38 | bt2.register_plugin(__name__, "foo") |