--- /dev/null
+# The MIT License (MIT)
+#
+# Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com>
+# Copyright (c) 2018 Francis Deslauriers <francis.deslauriers@efficios.com>
+# Copyright (c) 2019 Simon Marchi <simon.marchi@efficios.com>
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+__all__ = ['TraceClass']
+
+import bt2
+from bt2 import native_bt, utils, object
+import uuid as uuidp
+import collections.abc
+import functools
+
+
+class _TraceClassEnv(collections.abc.MutableMapping):
+ def __init__(self, trace_class):
+ self._trace_class = trace_class
+
+ def __getitem__(self, key):
+ utils._check_str(key)
+
+ borrow_entry_fn = native_bt.trace_class_borrow_environment_entry_value_by_name_const
+ value_ptr = borrow_entry_fn(self._trace_class._ptr, key)
+
+ if value_ptr is None:
+ raise KeyError(key)
+
+ return bt2.value._create_from_ptr_and_get_ref(value_ptr)
+
+ def __setitem__(self, key, value):
+ if isinstance(value, str):
+ set_env_entry_fn = native_bt.trace_class_set_environment_entry_string
+ elif isinstance(value, int):
+ set_env_entry_fn = native_bt.trace_class_set_environment_entry_integer
+ else:
+ raise TypeError('expected str or int, got {}'.format(type(value)))
+
+ ret = set_env_entry_fn(self._trace_class._ptr, key, value)
+
+ utils._handle_ret(ret, "cannot set trace class object's environment entry")
+
+ def __delitem__(self, key):
+ raise NotImplementedError
+
+ def __len__(self):
+ count = native_bt.trace_class_get_environment_entry_count(self._trace_class._ptr)
+ assert count >= 0
+ return count
+
+ def __iter__(self):
+ trace_class_ptr = self._trace_class_env._trace_class._ptr
+
+ for idx in range(len(self)):
+ borrow_entry_fn = native_bt.trace_class_borrow_environment_entry_by_index_const
+ entry_name, _ = borrow_entry_fn(trace_class_ptr, idx)
+ assert entry_name is not None
+ yield entry_name
+
+
+class _StreamClassIterator(collections.abc.Iterator):
+ def __init__(self, trace_class):
+ self._trace_class = trace_class
+ self._at = 0
+
+ def __next__(self):
+ if self._at == len(self._trace_class):
+ raise StopIteration
+
+ borrow_stream_class_fn = native_bt.trace_class_borrow_stream_class_by_index_const
+ sc_ptr = borrow_stream_class_fn(self._trace_class._ptr, self._at)
+ assert sc_ptr
+ id = native_bt.stream_class_get_id(sc_ptr)
+ assert id >= 0
+ self._at += 1
+ return id
+
+
+def _trace_class_destruction_listener_from_native(user_listener, trace_class_ptr):
+ trace_class = bt2.trace_class.TraceClass._create_from_ptr_and_get_ref(trace_class_ptr)
+ user_listener(trace_class)
+
+
+class TraceClass(object._SharedObject, collections.abc.Mapping):
+ _get_ref = staticmethod(native_bt.trace_class_get_ref)
+ _put_ref = staticmethod(native_bt.trace_class_put_ref)
+
+ @property
+ def uuid(self):
+ uuid_bytes = native_bt.trace_class_get_uuid(self._ptr)
+ if uuid_bytes is None:
+ return
+
+ return uuidp.UUID(bytes=uuid_bytes)
+
+ def _uuid(self, uuid):
+ utils._check_type(uuid, uuidp.UUID)
+ native_bt.trace_class_set_uuid(self._ptr, uuid.bytes)
+
+ _uuid = property(fset=_uuid)
+
+ # Number of stream classes in this trace class.
+
+ def __len__(self):
+ count = native_bt.trace_class_get_stream_class_count(self._ptr)
+ assert count >= 0
+ return count
+
+ # Get a stream class by stream id.
+
+ def __getitem__(self, key):
+ utils._check_uint64(key)
+
+ sc_ptr = native_bt.trace_class_borrow_stream_class_by_id_const(self._ptr, key)
+ if sc_ptr is None:
+ raise KeyError(key)
+
+ return bt2.StreamClass._create_from_ptr_and_get_ref(sc_ptr)
+
+ def __iter__(self):
+ for idx in range(len(self)):
+ sc_ptr = native_bt.trace_class_borrow_stream_class_by_index_const(self._ptr, idx)
+ assert sc_ptr is not None
+
+ id = native_bt.stream_class_get_id(sc_ptr)
+ assert id >= 0
+
+ yield id
+
+ @property
+ def env(self):
+ return _TraceClassEnv(self)
+
+ def create_stream_class(self, id=None):
+
+ if self.assigns_automatic_stream_class_id:
+ if id is not None:
+ raise bt2.CreationError('id provided, but trace class assigns automatic stream class ids')
+
+ sc_ptr = native_bt.stream_class_create(self._ptr)
+ else:
+ if id is None:
+ raise bt2.CreationError('id not provided, but trace class does not assign automatic stream class ids')
+
+ utils._check_uint64(id)
+ sc_ptr = native_bt.stream_class_create_with_id(self._ptr, id)
+
+ return bt2.StreamClass._create_from_ptr(sc_ptr)
+
+ @property
+ def assigns_automatic_stream_class_id(self):
+ return native_bt.trace_class_assigns_automatic_stream_class_id(self._ptr)
+
+ def _assigns_automatic_stream_class_id(self, auto_id):
+ utils._check_bool(auto_id)
+ return native_bt.trace_class_set_assigns_automatic_stream_class_id(self._ptr, auto_id)
+
+ _assigns_automatic_stream_class_id = property(fset=_assigns_automatic_stream_class_id)
+
+ # Add a listener to be called when the trace class is destroyed.
+
+ def add_destruction_listener(self, listener):
+
+ if not callable(listener):
+ raise TypeError("'listener' parameter is not callable")
+
+ fn = native_bt.py3_trace_class_add_destruction_listener
+ listener_from_native = functools.partial(_trace_class_destruction_listener_from_native,
+ listener)
+
+ listener_id = fn(self._ptr, listener_from_native)
+ if listener_id is None:
+ utils._raise_bt2_error('cannot add destruction listener to trace class object')
+
+ return bt2._ListenerHandle(listener_id, self)
projects / babeltrace.git / blobdiff