Refactor enrichment confg updater (#22325)

* enrichment updater and enum

* update_config stubs

* config updaters in enrichments

* update maintainer

* formatting

* simplify enrichment config updates to use single subscriber with topic-based routing

frigate/data_processing/real_time/api.py

@@ -61,3 +61,16 @@ class RealTimeProcessorApi(ABC):
             None.
         """
         pass
+
+    def update_config(self, topic: str, payload: Any) -> None:
+        """Handle a config change notification.
+
+        Called for every config update published under ``config/``.
+        Processors should override this to check the topic and act only
+        on changes relevant to them. Default is a no-op.
+
+        Args:
+            topic: The config topic that changed.
+            payload: The updated configuration object.
+        """
+        pass

frigate/data_processing/real_time/bird.py

@@ -169,6 +169,16 @@ class BirdRealTimeProcessor(RealTimeProcessorApi):
         )
         self.detected_birds[obj_data["id"]] = score
 
+    CONFIG_UPDATE_TOPIC = "config/classification"
+
+    def update_config(self, topic: str, payload: Any) -> None:
+        """Update bird classification config at runtime."""
+        if topic != self.CONFIG_UPDATE_TOPIC:
+            return
+
+        self.config.classification = payload
+        logger.debug("Bird classification config updated dynamically")
+
     def handle_request(self, topic, request_data):
         return None
 

frigate/data_processing/real_time/face.py

@@ -19,7 +19,6 @@ from frigate.comms.event_metadata_updater import (
 )
 from frigate.comms.inter_process import InterProcessRequestor
 from frigate.config import FrigateConfig
-from frigate.config.classification import FaceRecognitionConfig
 from frigate.const import FACE_DIR, MODEL_CACHE_DIR
 from frigate.data_processing.common.face.model import (
     ArcFaceRecognizer,
@@ -96,9 +95,21 @@ class FaceRealTimeProcessor(RealTimeProcessorApi):
 
         self.recognizer.build()
 
-    def update_config(self, face_config: FaceRecognitionConfig) -> None:
+    CONFIG_UPDATE_TOPIC = "config/face_recognition"
+
+    def update_config(self, topic: str, payload: Any) -> None:
         """Update face recognition config at runtime."""
-        self.face_config = face_config
+        if topic != self.CONFIG_UPDATE_TOPIC:
+            return
+
+        previous_min_area = self.config.face_recognition.min_area
+        self.config.face_recognition = payload
+        self.face_config = payload
+
+        for camera_config in self.config.cameras.values():
+            if camera_config.face_recognition.min_area == previous_min_area:
+                camera_config.face_recognition.min_area = payload.min_area
+
         logger.debug("Face recognition config updated dynamically")
 
     def __download_models(self, path: str) -> None:

frigate/data_processing/real_time/license_plate.py

@@ -8,7 +8,6 @@ import numpy as np
 from frigate.comms.event_metadata_updater import EventMetadataPublisher
 from frigate.comms.inter_process import InterProcessRequestor
 from frigate.config import FrigateConfig
-from frigate.config.classification import LicensePlateRecognitionConfig
 from frigate.data_processing.common.license_plate.mixin import (
     LicensePlateProcessingMixin,
 )
@@ -41,9 +40,21 @@ class LicensePlateRealTimeProcessor(LicensePlateProcessingMixin, RealTimeProcess
         self.camera_current_cars: dict[str, list[str]] = {}
         super().__init__(config, metrics)
 
-    def update_config(self, lpr_config: LicensePlateRecognitionConfig) -> None:
+    CONFIG_UPDATE_TOPIC = "config/lpr"
+
+    def update_config(self, topic: str, payload: Any) -> None:
         """Update LPR config at runtime."""
-        self.lpr_config = lpr_config
+        if topic != self.CONFIG_UPDATE_TOPIC:
+            return
+
+        previous_min_area = self.config.lpr.min_area
+        self.config.lpr = payload
+        self.lpr_config = payload
+
+        for camera_config in self.config.cameras.values():
+            if camera_config.lpr.min_area == previous_min_area:
+                camera_config.lpr.min_area = payload.min_area
+
         logger.debug("LPR config updated dynamically")
 
     def process_frame(