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Code Activity

fix(on_async_readback): suppress history updates from old scan_id

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This commit is contained in:
appel_c
2025-04-15 20:17:47 +02:00
parent 120303b8db
commit 6f1a472128
2 changed files with 10 additions and 5 deletions
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9
bec_widgets/utils/bec_dispatcher.py
View File

@ -25,9 +25,9 @@ if TYPE_CHECKING: # pragma: no cover
class QtThreadSafeCallback(QObject):
cb_signal = pyqtSignal(dict, dict)
def __init__(self, cb):
def __init__(self, cb, cb_info: dict | None = None):
super().__init__()
self.topics = None
self.cb_info = cb_info
self.cb = cb
self.cb_signal.connect(self.cb)
@ -38,7 +38,6 @@ class QtThreadSafeCallback(QObject):
return id(self.cb)
def __call__(self, msg_content, metadata):
logger.info(f"Received message for topic {self.topics}")
self.cb_signal.emit(msg_content, metadata)
@ -138,6 +137,7 @@ class BECDispatcher:
self,
slot: Callable,
topics: Union[EndpointInfo, str, list[Union[EndpointInfo, str]]],
cb_info: dict | None = None,
**kwargs,
) -> None:
"""Connect widget's qt slot, so that it is called on new pub/sub topic message.
@ -147,8 +147,7 @@ class BECDispatcher:
the corresponding pub/sub message
topics (EndpointInfo | str | list): A topic or list of topics that can typically be acquired via bec_lib.MessageEndpoints
"""
slot = QtThreadSafeCallback(slot)
slot.topics = topics
slot = QtThreadSafeCallback(slot, cb_info=cb_info)
self.client.connector.register(topics, cb=slot, **kwargs)
topics_str, _ = self.client.connector._convert_endpointinfo(topics)
self._slots[slot].update(set(topics_str))

6
bec_widgets/widgets/plots/waveform/waveform.py
View File

@ -1176,6 +1176,7 @@ class Waveform(PlotBase):
self.bec_dispatcher.connect_slot(
self.on_async_readback,
MessageEndpoints.device_async_readback(self.scan_id, name),
cb_info={"scan_id": self.scan_id},
from_start=True,
)
logger.info(f"Setup async curve {name}")
@ -1199,6 +1200,11 @@ class Waveform(PlotBase):
msg(dict): Message with the async data.
metadata(dict): Metadata of the message.
"""
sender = self.sender()
if sender and hasattr(sender, "cb_info"):
scan_id = sender.cb_info.get("scan_id", None)
if scan_id != self.scan_id:
return # Ignore messages from other scans
instruction = metadata.get("async_update", {}).get("type")
if instruction not in ["add", "add_slice", "replace"]:
logger.warning(f"Invalid async update instruction: {instruction}")