bt2: prepend `_` prefix to names of classes that the user cannot create
[babeltrace.git] / bindings / python / bt2 / bt2 / stream_class.py
... / ...
CommitLineData
1# The MIT License (MIT)
2#
3# Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com>
4#
5# Permission is hereby granted, free of charge, to any person obtaining a copy
6# of this software and associated documentation files (the "Software"), to deal
7# in the Software without restriction, including without limitation the rights
8# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9# copies of the Software, and to permit persons to whom the Software is
10# furnished to do so, subject to the following conditions:
11#
12# The above copyright notice and this permission notice shall be included in
13# all copies or substantial portions of the Software.
14#
15# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
21# THE SOFTWARE.
22
23from bt2 import native_bt, object, utils
24import bt2.field_class
25import bt2.event_class
26import collections.abc
27import bt2.stream
28import bt2
29
30
31class _StreamClass(object._SharedObject, collections.abc.Mapping):
32 _get_ref = staticmethod(native_bt.stream_class_get_ref)
33 _put_ref = staticmethod(native_bt.stream_class_put_ref)
34
35 def __getitem__(self, key):
36 utils._check_int64(key)
37 ec_ptr = native_bt.stream_class_borrow_event_class_by_id(self._ptr, key)
38
39 if ec_ptr is None:
40 raise KeyError(key)
41
42 return bt2.event_class._EventClass._create_from_ptr_and_get_ref(ec_ptr)
43
44 def __len__(self):
45 count = native_bt.stream_class_get_event_class_count(self._ptr)
46 assert count >= 0
47 return count
48
49 def __iter__(self):
50 for idx in range(len(self)):
51 ec_ptr = native_bt.stream_class_borrow_event_class_by_index_const(self._ptr, idx)
52 assert ec_ptr is not None
53
54 id = native_bt.event_class_get_id(ec_ptr)
55 assert id >= 0
56
57 yield id
58
59 def create_event_class(self, id=None, name=None, log_level=None, emf_uri=None,
60 specific_context_field_class=None,
61 payload_field_class=None):
62 if self.assigns_automatic_event_class_id:
63 if id is not None:
64 raise ValueError('id provided, but stream class assigns automatic event class ids')
65
66 ec_ptr = native_bt.event_class_create(self._ptr)
67 else:
68 if id is None:
69 raise ValueError('id not provided, but stream class does not assign automatic event class ids')
70
71 utils._check_uint64(id)
72 ec_ptr = native_bt.event_class_create_with_id(self._ptr, id)
73
74 event_class = bt2.event_class._EventClass._create_from_ptr(ec_ptr)
75
76 if name is not None:
77 event_class._name = name
78
79 if log_level is not None:
80 event_class._log_level = log_level
81
82 if emf_uri is not None:
83 event_class._emf_uri = emf_uri
84
85 if specific_context_field_class is not None:
86 event_class._specific_context_field_class = specific_context_field_class
87
88 if payload_field_class is not None:
89 event_class._payload_field_class = payload_field_class
90
91 return event_class
92
93 @property
94 def trace_class(self):
95 tc_ptr = native_bt.stream_class_borrow_trace_class_const(self._ptr)
96
97 if tc_ptr is not None:
98 return bt2._TraceClass._create_from_ptr_and_get_ref(tc_ptr)
99
100 @property
101 def name(self):
102 return native_bt.stream_class_get_name(self._ptr)
103
104 def _name(self, name):
105 utils._check_str(name)
106 ret = native_bt.stream_class_set_name(self._ptr, name)
107 utils._handle_ret(ret, "cannot set stream class object's name")
108
109 _name = property(fset=_name)
110
111 @property
112 def assigns_automatic_event_class_id(self):
113 return native_bt.stream_class_assigns_automatic_event_class_id(self._ptr)
114
115 def _assigns_automatic_event_class_id(self, auto_id):
116 utils._check_bool(auto_id)
117 return native_bt.stream_class_set_assigns_automatic_event_class_id(self._ptr, auto_id)
118
119 _assigns_automatic_event_class_id = property(fset=_assigns_automatic_event_class_id)
120
121 @property
122 def assigns_automatic_stream_id(self):
123 return native_bt.stream_class_assigns_automatic_stream_id(self._ptr)
124
125 def _assigns_automatic_stream_id(self, auto_id):
126 utils._check_bool(auto_id)
127 return native_bt.stream_class_set_assigns_automatic_stream_id(self._ptr, auto_id)
128
129 _assigns_automatic_stream_id = property(fset=_assigns_automatic_stream_id)
130
131 @property
132 def packets_have_beginning_default_clock_snapshot(self):
133 return native_bt.stream_class_packets_have_beginning_default_clock_snapshot(self._ptr)
134
135 def _packets_have_beginning_default_clock_snapshot(self, value):
136 utils._check_bool(value)
137 native_bt.stream_class_set_packets_have_beginning_default_clock_snapshot(self._ptr, value)
138
139 _packets_have_beginning_default_clock_snapshot = property(fset=_packets_have_beginning_default_clock_snapshot)
140
141 @property
142 def packets_have_end_default_clock_snapshot(self):
143 return native_bt.stream_class_packets_have_end_default_clock_snapshot(self._ptr)
144
145 def _packets_have_end_default_clock_snapshot(self, value):
146 utils._check_bool(value)
147 native_bt.stream_class_set_packets_have_end_default_clock_snapshot(self._ptr, value)
148
149 _packets_have_end_default_clock_snapshot = property(fset=_packets_have_end_default_clock_snapshot)
150
151 @property
152 def supports_discarded_events(self):
153 return native_bt.stream_class_supports_discarded_events(self._ptr)
154
155 def _set_supports_discarded_events(self, supports, with_cs=False):
156 utils._check_bool(supports)
157 utils._check_bool(with_cs)
158
159 if not supports and with_cs:
160 raise ValueError('cannot not support discarded events, but have default clock snapshots')
161
162 native_bt.stream_class_set_supports_discarded_events(self._ptr, supports, with_cs)
163
164 @property
165 def discarded_events_have_default_clock_snapshots(self):
166 return native_bt.stream_class_discarded_events_have_default_clock_snapshots(self._ptr)
167
168 @property
169 def supports_discarded_packets(self):
170 return native_bt.stream_class_supports_discarded_packets(self._ptr)
171
172 def _set_supports_discarded_packets(self, supports, with_cs):
173 utils._check_bool(supports)
174 utils._check_bool(with_cs)
175
176 if not supports and with_cs:
177 raise ValueError('cannot not support discarded packets, but have default clock snapshots')
178
179 native_bt.stream_class_set_supports_discarded_packets(self._ptr, supports, with_cs)
180
181 @property
182 def discarded_packets_have_default_clock_snapshots(self):
183 return native_bt.stream_class_discarded_packets_have_default_clock_snapshots(self._ptr)
184
185 @property
186 def id(self):
187 id = native_bt.stream_class_get_id(self._ptr)
188
189 if id < 0:
190 return
191
192 return id
193
194 @id.setter
195 def id(self, id):
196 utils._check_int64(id)
197 ret = native_bt.stream_class_set_id(self._ptr, id)
198 utils._handle_ret(ret, "cannot set stream class object's ID")
199
200 @property
201 def packet_context_field_class(self):
202 fc_ptr = native_bt.stream_class_borrow_packet_context_field_class_const(self._ptr)
203
204 if fc_ptr is None:
205 return
206
207 return bt2.field_class._create_field_class_from_ptr_and_get_ref(fc_ptr)
208
209 def _packet_context_field_class(self, packet_context_field_class):
210 if packet_context_field_class is not None:
211 utils._check_type(packet_context_field_class,
212 bt2.field_class._StructureFieldClass)
213 ret = native_bt.stream_class_set_packet_context_field_class(self._ptr,
214 packet_context_field_class._ptr)
215 utils._handle_ret(ret, "cannot set stream class' packet context field class")
216
217 _packet_context_field_class = property(fset=_packet_context_field_class)
218
219 @property
220 def event_common_context_field_class(self):
221 fc_ptr = native_bt.stream_class_borrow_event_common_context_field_class_const(self._ptr)
222
223 if fc_ptr is None:
224 return
225
226 return bt2.field_class._create_field_class_from_ptr_and_get_ref(fc_ptr)
227
228 def _event_common_context_field_class(self, event_common_context_field_class):
229 if event_common_context_field_class is not None:
230 utils._check_type(event_common_context_field_class,
231 bt2.field_class._StructureFieldClass)
232
233 set_context_fn = native_bt.stream_class_set_event_common_context_field_class
234 ret = set_context_fn(self._ptr, event_common_context_field_class._ptr)
235
236 utils._handle_ret(ret, "cannot set stream class' event context field type")
237
238 _event_common_context_field_class = property(fset=_event_common_context_field_class)
239
240 @property
241 def default_clock_class(self):
242 cc_ptr = native_bt.stream_class_borrow_default_clock_class(self._ptr)
243 if cc_ptr is None:
244 return
245
246 return bt2.clock_class._ClockClass._create_from_ptr_and_get_ref(cc_ptr)
247
248 def _default_clock_class(self, clock_class):
249 utils._check_type(clock_class, bt2.clock_class._ClockClass)
250 native_bt.stream_class_set_default_clock_class(
251 self._ptr, clock_class._ptr)
252
253 _default_clock_class = property(fset=_default_clock_class)
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