Avoid looking up the callable type for HassJob when we already know it (#102962)

* Avoid looking up the callable type for HassJob when we already know it

When we connect the frontend we call async_listen with run_immediately MANY
times when we already know the job type (it will always be a callback). This
reduces the latency to get the frontend going

* missing coverage

homeassistant/core.py

@@ -282,11 +282,12 @@ class HassJob(Generic[_P, _R_co]):
         name: str | None = None,
         *,
         cancel_on_shutdown: bool | None = None,
+        job_type: HassJobType | None = None,
     ) -> None:
         """Create a job object."""
         self.target = target
         self.name = name
-        self.job_type = _get_hassjob_callable_job_type(target)
+        self.job_type = job_type or _get_hassjob_callable_job_type(target)
         self._cancel_on_shutdown = cancel_on_shutdown
 
     @property
@@ -1153,13 +1154,20 @@ class EventBus:
 
         This method must be run in the event loop.
         """
+        job_type: HassJobType | None = None
         if event_filter is not None and not is_callback_check_partial(event_filter):
             raise HomeAssistantError(f"Event filter {event_filter} is not a callback")
-        if run_immediately and not is_callback_check_partial(listener):
-            raise HomeAssistantError(f"Event listener {listener} is not a callback")
+        if run_immediately:
+            if not is_callback_check_partial(listener):
+                raise HomeAssistantError(f"Event listener {listener} is not a callback")
+            job_type = HassJobType.Callback
         return self._async_listen_filterable_job(
             event_type,
-            (HassJob(listener, f"listen {event_type}"), event_filter, run_immediately),
+            (
+                HassJob(listener, f"listen {event_type}", job_type=job_type),
+                event_filter,
+                run_immediately,
+            ),
         )
 
     @callback
@@ -1234,7 +1242,11 @@ class EventBus:
         )
 
         filterable_job = (
-            HassJob(_onetime_listener, f"onetime listen {event_type} {listener}"),
+            HassJob(
+                _onetime_listener,
+                f"onetime listen {event_type} {listener}",
+                job_type=HassJobType.Callback,
+            ),
             None,
             False,
         )

homeassistant/helpers/event.py

@@ -24,6 +24,7 @@ from homeassistant.const import (
 from homeassistant.core import (
     CALLBACK_TYPE,
     HassJob,
+    HassJobType,
     HomeAssistant,
     State,
     callback,
@@ -1376,6 +1377,7 @@ def async_track_point_in_time(
         utc_converter,
         name=f"{job.name} UTC converter",
         cancel_on_shutdown=job.cancel_on_shutdown,
+        job_type=HassJobType.Callback,
     )
     return async_track_point_in_utc_time(hass, track_job, point_in_time)
 
@@ -1531,7 +1533,10 @@ def async_track_time_interval(
         job_name = f"track time interval {interval} {action}"
 
     interval_listener_job = HassJob(
-        interval_listener, job_name, cancel_on_shutdown=cancel_on_shutdown
+        interval_listener,
+        job_name,
+        cancel_on_shutdown=cancel_on_shutdown,
+        job_type=HassJobType.Callback,
     )
     remove = async_call_later(hass, interval_seconds, interval_listener_job)
 
@@ -1703,6 +1708,7 @@ def async_track_utc_time_change(
     pattern_time_change_listener_job = HassJob(
         pattern_time_change_listener,
         f"time change listener {hour}:{minute}:{second} {action}",
+        job_type=HassJobType.Callback,
     )
     time_listener = async_track_point_in_utc_time(
         hass, pattern_time_change_listener_job, calculate_next(dt_util.utcnow())

homeassistant/helpers/update_coordinator.py

@@ -16,7 +16,14 @@ import requests
 
 from homeassistant import config_entries
 from homeassistant.const import EVENT_HOMEASSISTANT_STOP
-from homeassistant.core import CALLBACK_TYPE, Event, HassJob, HomeAssistant, callback
+from homeassistant.core import (
+    CALLBACK_TYPE,
+    Event,
+    HassJob,
+    HassJobType,
+    HomeAssistant,
+    callback,
+)
 from homeassistant.exceptions import (
     ConfigEntryAuthFailed,
     ConfigEntryError,
@@ -104,7 +111,11 @@ class DataUpdateCoordinator(BaseDataUpdateCoordinatorProtocol, Generic[_DataT]):
         job_name += f" {name}"
         if entry := self.config_entry:
             job_name += f" {entry.title} {entry.domain} {entry.entry_id}"
-        self._job = HassJob(self._handle_refresh_interval, job_name)
+        self._job = HassJob(
+            self._handle_refresh_interval,
+            job_name,
+            job_type=HassJobType.Coroutinefunction,
+        )
         self._unsub_refresh: CALLBACK_TYPE | None = None
         self._unsub_shutdown: CALLBACK_TYPE | None = None
         self._request_refresh_task: asyncio.TimerHandle | None = None

tests/test_core.py

@@ -816,6 +816,16 @@ async def test_eventbus_run_immediately(hass: HomeAssistant) -> None:
     unsub()
 
 
+async def test_eventbus_run_immediately_not_callback(hass: HomeAssistant) -> None:
+    """Test we raise when passing a non-callback with run_immediately."""
+
+    def listener(event):
+        """Mock listener."""
+
+    with pytest.raises(HomeAssistantError):
+        hass.bus.async_listen("test", listener, run_immediately=True)
+
+
 async def test_eventbus_unsubscribe_listener(hass: HomeAssistant) -> None:
     """Test unsubscribe listener from returned function."""
     calls = []
@@ -2534,3 +2544,25 @@ def test_is_callback_check_partial():
     assert HassJob(ha.callback(functools.partial(not_callback_func))).job_type == (
         ha.HassJobType.Executor
     )
+
+
+def test_hassjob_passing_job_type():
+    """Test passing the job type to HassJob when we already know it."""
+
+    @ha.callback
+    def callback_func():
+        pass
+
+    def not_callback_func():
+        pass
+
+    assert (
+        HassJob(callback_func, job_type=ha.HassJobType.Callback).job_type
+        == ha.HassJobType.Callback
+    )
+
+    # We should trust the job_type passed in
+    assert (
+        HassJob(not_callback_func, job_type=ha.HassJobType.Callback).job_type
+        == ha.HassJobType.Callback
+    )