Add configuration option to disable status updates via message bus

src/blueapi/config.py

@@ -46,6 +46,14 @@ class DataWritingConfig(BlueapiBaseModel):
     group_name: str = "example"
 
 
+class WorkerEventConfig(BlueapiBaseModel):
+    """
+    Config for event broadcasting via the message bus
+    """
+
+    broadcast_status_events: bool = True
+
+
 class EnvironmentConfig(BlueapiBaseModel):
     """
     Config for the RunEngine environment
@@ -60,6 +68,7 @@ class EnvironmentConfig(BlueapiBaseModel):
         Source(kind=SourceKind.PLAN_FUNCTIONS, module="dls_bluesky_core.stubs"),
     ]
     data_writing: DataWritingConfig = Field(default_factory=DataWritingConfig)
+    events: WorkerEventConfig = Field(default_factory=WorkerEventConfig)
 
 
 class LoggingConfig(BlueapiBaseModel):

src/blueapi/service/handler.py

@@ -37,7 +37,10 @@ def __init__(
 
         self.context.with_config(self.config.env)
 
-        self.worker = worker or RunEngineWorker(self.context)
+        self.worker = worker or RunEngineWorker(
+            self.context,
+            broadcast_statuses=self.config.env.events.broadcast_status_events,
+        )
         self.messaging_template = (
             messaging_template
             or StompMessagingTemplate.autoconfigured(self.config.stomp)

src/blueapi/worker/reworker.py

@@ -69,6 +69,7 @@ def __init__(
         self,
         ctx: BlueskyContext,
         start_stop_timeout: float = DEFAULT_START_STOP_TIMEOUT,
+        broadcast_statuses: bool = True,
     ) -> None:
         self._ctx = ctx
         self._start_stop_timeout = start_stop_timeout
@@ -90,6 +91,7 @@ def __init__(
         self._stopping = Event()
         self._stopped = Event()
         self._stopped.set()
+        self._broadcast_statuses = broadcast_statuses
 
     def clear_task(self, task_id: str) -> str:
         task = self._pending_tasks.pop(task_id)
@@ -197,7 +199,8 @@ def run(self) -> None:
         LOGGER.info("Worker starting")
         self._ctx.run_engine.state_hook = self._on_state_change
         self._ctx.run_engine.subscribe(self._on_document)
-        self._ctx.run_engine.waiting_hook = self._waiting_hook
+        if self._broadcast_statuses:
+            self._ctx.run_engine.waiting_hook = self._waiting_hook
 
         self._stopped.clear()
         self._started.set()