bindings/python/bt2/bt2/stream_class.py

   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
  23 from bt2 import native_bt, object, utils
  24 import bt2.field_class
  25 import collections.abc
  26 import bt2.ctf_writer
  27 import bt2.stream
  28 import bt2
  29
  30
  31 class 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.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_default_beginning_clock_snapshot(self):
 133         return native_bt.stream_class_packets_have_default_beginning_clock_snapshot(self._ptr)
 134
 135     def _packets_have_default_beginning_clock_snapshot(self, value):
 136         utils._check_bool(value)
 137         native_bt.stream_class_set_packets_have_default_beginning_clock_snapshot(self._ptr, value)
 138
 139     _packets_have_default_beginning_clock_snapshot = property(fset=_packets_have_default_beginning_clock_snapshot)
 140
 141     @property
 142     def packets_have_default_end_clock_snapshot(self):
 143         return native_bt.stream_class_packets_have_default_end_clock_snapshot(self._ptr)
 144
 145     def _packets_have_default_end_clock_snapshot(self, value):
 146         utils._check_bool(value)
 147         native_bt.stream_class_set_packets_have_default_end_clock_snapshot(self._ptr, value)
 148
 149     _packets_have_default_end_clock_snapshot = property(fset=_packets_have_default_end_clock_snapshot)
 150
 151     @property
 152     def id(self):
 153         id = native_bt.stream_class_get_id(self._ptr)
 154
 155         if id < 0:
 156             return
 157
 158         return id
 159
 160     @id.setter
 161     def id(self, id):
 162         utils._check_int64(id)
 163         ret = native_bt.stream_class_set_id(self._ptr, id)
 164         utils._handle_ret(ret, "cannot set stream class object's ID")
 165
 166     @property
 167     def clock(self):
 168         clock_ptr = native_bt.stream_class_get_clock(self._ptr)
 169
 170         if clock_ptr is None:
 171             return
 172
 173         return bt2.ctf_writer.CtfWriterClock._create_from_ptr(clock_ptr)
 174
 175     @clock.setter
 176     def clock(self, clock):
 177         utils._check_type(clock, bt2.ctf_writer.CtfWriterClock)
 178         ret = native_bt.stream_class_set_clock(self._ptr, clock._ptr)
 179         utils._handle_ret(ret, "cannot set stream class object's CTF writer clock object")
 180
 181     @property
 182     def packet_context_field_class(self):
 183         fc_ptr = native_bt.stream_class_borrow_packet_context_field_class_const(self._ptr)
 184
 185         if fc_ptr is None:
 186             return
 187
 188         return bt2.field_class._create_field_class_from_ptr_and_get_ref(fc_ptr)
 189
 190     def _packet_context_field_class(self, packet_context_field_class):
 191         if packet_context_field_class is not None:
 192             utils._check_type(packet_context_field_class,
 193                               bt2.field_class._StructureFieldClass)
 194             ret = native_bt.stream_class_set_packet_context_field_class(self._ptr,
 195                                                                         packet_context_field_class._ptr)
 196             utils._handle_ret(ret, "cannot set stream class' packet context field class")
 197
 198     _packet_context_field_class = property(fset=_packet_context_field_class)
 199
 200     @property
 201     def event_common_context_field_class(self):
 202         fc_ptr = native_bt.stream_class_borrow_event_common_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 _event_common_context_field_class(self, event_common_context_field_class):
 210         if event_common_context_field_class is not None:
 211             utils._check_type(event_common_context_field_class,
 212                               bt2.field_class._StructureFieldClass)
 213
 214             set_context_fn = native_bt.stream_class_set_event_common_context_field_class
 215             ret = set_context_fn(self._ptr, event_common_context_field_class._ptr)
 216
 217             utils._handle_ret(ret, "cannot set stream class' event context field type")
 218
 219     _event_common_context_field_class = property(fset=_event_common_context_field_class)
 220
 221     @property
 222     def default_clock_class(self):
 223         cc_ptr = native_bt.stream_class_borrow_default_clock_class(self._ptr)
 224         if cc_ptr is None:
 225             return
 226
 227         return bt2.clock_class._ClockClass._create_from_ptr_and_get_ref(cc_ptr)
 228
 229     def _default_clock_class(self, clock_class):
 230         utils._check_type(clock_class, bt2.clock_class._ClockClass)
 231         native_bt.stream_class_set_default_clock_class(
 232             self._ptr, clock_class._ptr)
 233
 234     _default_clock_class = property(fset=_default_clock_class)