import bt2.trace_class
import bt2
import functools
+import uuid as uuidp
+
+
+class _TraceEnv(collections.abc.MutableMapping):
+ def __init__(self, trace):
+ self._trace = trace
+
+ def __getitem__(self, key):
+ utils._check_str(key)
+
+ borrow_entry_fn = native_bt.trace_borrow_environment_entry_value_by_name_const
+ value_ptr = borrow_entry_fn(self._trace._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_set_environment_entry_string
+ elif isinstance(value, int):
+ set_env_entry_fn = native_bt.trace_set_environment_entry_integer
+ else:
+ raise TypeError('expected str or int, got {}'.format(type(value)))
+
+ status = set_env_entry_fn(self._trace._ptr, key, value)
+ utils._handle_func_status(status,
+ "cannot set trace object's environment entry")
+
+ def __delitem__(self, key):
+ raise NotImplementedError
+
+ def __len__(self):
+ count = native_bt.trace_get_environment_entry_count(self._trace._ptr)
+ assert count >= 0
+ return count
+
+ def __iter__(self):
+ trace_ptr = self._trace_env._trace._ptr
+
+ for idx in range(len(self)):
+ borrow_entry_fn = native_bt.trace_borrow_environment_entry_by_index_const
+ entry_name, _ = borrow_entry_fn(trace_ptr, idx)
+ assert entry_name is not None
+ yield entry_name
def _trace_destruction_listener_from_native(user_listener, trace_ptr):
_name = property(fset=_name)
+ @property
+ def uuid(self):
+ uuid_bytes = native_bt.trace_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_set_uuid(self._ptr, uuid.bytes)
+
+ _uuid = property(fset=_uuid)
+
+ @property
+ def env(self):
+ return _TraceEnv(self)
+
def create_stream(self, stream_class, id=None, name=None):
utils._check_type(stream_class, bt2.stream_class._StreamClass)