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/post/api.py

@@ -50,3 +50,16 @@ class PostProcessorApi(ABC):
             None if request was not handled, otherwise return response.
         """
         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/post/license_plate.py

@@ -12,7 +12,6 @@ from frigate.comms.embeddings_updater import EmbeddingsRequestEnum
 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 (
     WRITE_DEBUG_IMAGES,
     LicensePlateProcessingMixin,
@@ -48,10 +47,15 @@ class LicensePlatePostProcessor(LicensePlateProcessingMixin, PostProcessorApi):
         self.sub_label_publisher = sub_label_publisher
         super().__init__(config, metrics, model_runner)
 
-    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:
-        logger.debug("LPR config updated dynamically")
+            return
+
+        self.lpr_config = payload
+        logger.debug("LPR post-processor config updated dynamically")
 
     def process_data(
         self, data: dict[str, Any], data_type: PostProcessDataEnum

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(

frigate/embeddings/maintainer.py

@@ -96,16 +96,7 @@ class EmbeddingMaintainer(threading.Thread):
                 CameraConfigUpdateEnum.semantic_search,
             ],
         )
-        self.classification_config_subscriber = ConfigSubscriber(
+        self.enrichment_config_subscriber = ConfigSubscriber("config/")
-            "config/classification/custom/"
-        )
-        self.bird_classification_config_subscriber = ConfigSubscriber(
-            "config/classification", exact=True
-        )
-        self.face_recognition_config_subscriber = ConfigSubscriber(
-            "config/face_recognition", exact=True
-        )
-        self.lpr_config_subscriber = ConfigSubscriber("config/lpr", exact=True)
 
         # Configure Frigate DB
         db = SqliteVecQueueDatabase(
@@ -280,10 +271,7 @@ class EmbeddingMaintainer(threading.Thread):
         """Maintain a SQLite-vec database for semantic search."""
         while not self.stop_event.is_set():
             self.config_updater.check_for_updates()
-            self._check_classification_config_updates()
+            self._check_enrichment_config_updates()
-            self._check_bird_classification_config_updates()
-            self._check_face_recognition_config_updates()
-            self._check_lpr_config_updates()
             self._process_requests()
             self._process_updates()
             self._process_recordings_updates()
@@ -294,10 +282,7 @@ class EmbeddingMaintainer(threading.Thread):
             self._process_event_metadata()
 
         self.config_updater.stop()
-        self.classification_config_subscriber.stop()
+        self.enrichment_config_subscriber.stop()
-        self.bird_classification_config_subscriber.stop()
-        self.face_recognition_config_subscriber.stop()
-        self.lpr_config_subscriber.stop()
         self.event_subscriber.stop()
         self.event_end_subscriber.stop()
         self.recordings_subscriber.stop()
@@ -308,124 +293,87 @@ class EmbeddingMaintainer(threading.Thread):
         self.requestor.stop()
         logger.info("Exiting embeddings maintenance...")
 
-    def _check_classification_config_updates(self) -> None:
+    def _check_enrichment_config_updates(self) -> None:
-        """Check for classification config updates and add/remove processors."""
+        """Check for enrichment config updates and delegate to processors."""
-        topic, model_config = self.classification_config_subscriber.check_for_update()
+        topic, payload = self.enrichment_config_subscriber.check_for_update()
 
-        if topic:
+        if topic is None:
-            model_name = topic.split("/")[-1]
+            return
 
-            if model_config is None:
+        # Custom classification add/remove requires managing the processor list
-                self.realtime_processors = [
+        if topic.startswith("config/classification/custom/"):
-                    processor
+            self._handle_custom_classification_update(topic, payload)
-                    for processor in self.realtime_processors
+            return
-                    if not (
-                        isinstance(
-                            processor,
-                            (
-                                CustomStateClassificationProcessor,
-                                CustomObjectClassificationProcessor,
-                            ),
-                        )
-                        and processor.model_config.name == model_name
-                    )
-                ]
 
-                logger.info(
+        # Broadcast to all processors — each decides if the topic is relevant
-                    f"Successfully removed classification processor for model: {model_name}"
+        for processor in self.realtime_processors:
-                )
+            processor.update_config(topic, payload)
-            else:
-                self.config.classification.custom[model_name] = model_config
 
-                # Check if processor already exists
+        for processor in self.post_processors:
-                for processor in self.realtime_processors:
+            processor.update_config(topic, payload)
-                    if isinstance(
+
+    def _handle_custom_classification_update(
+        self, topic: str, model_config: Any
+    ) -> None:
+        """Handle add/remove of custom classification processors."""
+        model_name = topic.split("/")[-1]
+
+        if model_config is None:
+            self.realtime_processors = [
+                processor
+                for processor in self.realtime_processors
+                if not (
+                    isinstance(
                         processor,
                         (
                             CustomStateClassificationProcessor,
                             CustomObjectClassificationProcessor,
                         ),
-                    ):
-                        if processor.model_config.name == model_name:
-                            logger.debug(
-                                f"Classification processor for model {model_name} already exists, skipping"
-                            )
-                            return
-
-                if model_config.state_config is not None:
-                    processor = CustomStateClassificationProcessor(
-                        self.config, model_config, self.requestor, self.metrics
                     )
-                else:
+                    and processor.model_config.name == model_name
-                    processor = CustomObjectClassificationProcessor(
-                        self.config,
-                        model_config,
-                        self.event_metadata_publisher,
-                        self.requestor,
-                        self.metrics,
-                    )
-
-                self.realtime_processors.append(processor)
-                logger.info(
-                    f"Added classification processor for model: {model_name} (type: {type(processor).__name__})"
                 )
+            ]
 
-    def _check_bird_classification_config_updates(self) -> None:
+            logger.info(
-        """Check for bird classification config updates."""
+                f"Successfully removed classification processor for model: {model_name}"
-        topic, classification_config = (
+            )
-            self.bird_classification_config_subscriber.check_for_update()
+            return
+
+        self.config.classification.custom[model_name] = model_config
+
+        # Check if processor already exists
+        for processor in self.realtime_processors:
+            if isinstance(
+                processor,
+                (
+                    CustomStateClassificationProcessor,
+                    CustomObjectClassificationProcessor,
+                ),
+            ):
+                if processor.model_config.name == model_name:
+                    logger.debug(
+                        f"Classification processor for model {model_name} already exists, skipping"
+                    )
+                    return
+
+        if model_config.state_config is not None:
+            processor = CustomStateClassificationProcessor(
+                self.config, model_config, self.requestor, self.metrics
+            )
+        else:
+            processor = CustomObjectClassificationProcessor(
+                self.config,
+                model_config,
+                self.event_metadata_publisher,
+                self.requestor,
+                self.metrics,
+            )
+
+        self.realtime_processors.append(processor)
+        logger.info(
+            f"Added classification processor for model: {model_name} (type: {type(processor).__name__})"
         )
 
-        if topic is None:
-            return
-
-        self.config.classification = classification_config
-        logger.debug("Applied dynamic bird classification config update")
-
-    def _check_face_recognition_config_updates(self) -> None:
-        """Check for face recognition config updates."""
-        topic, face_config = self.face_recognition_config_subscriber.check_for_update()
-
-        if topic is None:
-            return
-
-        previous_min_area = self.config.face_recognition.min_area
-        self.config.face_recognition = face_config
-
-        for camera_config in self.config.cameras.values():
-            if camera_config.face_recognition.min_area == previous_min_area:
-                camera_config.face_recognition.min_area = face_config.min_area
-
-        for processor in self.realtime_processors:
-            if isinstance(processor, FaceRealTimeProcessor):
-                processor.update_config(face_config)
-
-        logger.debug("Applied dynamic face recognition config update")
-
-    def _check_lpr_config_updates(self) -> None:
-        """Check for LPR config updates."""
-        topic, lpr_config = self.lpr_config_subscriber.check_for_update()
-
-        if topic is None:
-            return
-
-        previous_min_area = self.config.lpr.min_area
-        self.config.lpr = lpr_config
-
-        for camera_config in self.config.cameras.values():
-            if camera_config.lpr.min_area == previous_min_area:
-                camera_config.lpr.min_area = lpr_config.min_area
-
-        for processor in self.realtime_processors:
-            if isinstance(processor, LicensePlateRealTimeProcessor):
-                processor.update_config(lpr_config)
-
-        for processor in self.post_processors:
-            if isinstance(processor, LicensePlatePostProcessor):
-                processor.update_config(lpr_config)
-
-        logger.debug("Applied dynamic LPR config update")
-
     def _process_requests(self) -> None:
         """Process embeddings requests"""