Disable semantic search by default (#12568)

* Disable semantic search by default and don't start processes unless enabled

* Conditionally create embeddings

* Fix typing

docker/main/rootfs/etc/s6-overlay/s6-rc.d/chroma/run

@@ -9,8 +9,19 @@ set -o errexit -o nounset -o pipefail
 # Tell S6-Overlay not to restart this service
 s6-svc -O .
 
-echo "[INFO] Starting ChromaDB..."
+search_enabled=`python3 /usr/local/semantic_search/get_search_settings.py | jq -r .enabled`
 
 # Replace the bash process with the Frigate process, redirecting stderr to stdout
 exec 2>&1
-exec /usr/local/chroma run --path /config/chroma --host 127.0.0.1
+
+if [[ "$search_enabled" == 'true' ]]; then
+    echo "[INFO] Starting ChromaDB..."
+    exec /usr/local/chroma run --path /config/chroma --host 127.0.0.1
+else
+    while true
+    do
+        sleep 9999
+        continue
+    done
+    exit 0
+fi

docker/main/rootfs/usr/local/semantic_search/get_search_settings.py

@@ -0,0 +1,28 @@
+"""Prints the semantic_search config as json to stdout."""
+
+import json
+import os
+
+import yaml
+
+config_file = os.environ.get("CONFIG_FILE", "/config/config.yml")
+
+# Check if we can use .yaml instead of .yml
+config_file_yaml = config_file.replace(".yml", ".yaml")
+if os.path.isfile(config_file_yaml):
+    config_file = config_file_yaml
+
+try:
+    with open(config_file) as f:
+        raw_config = f.read()
+
+    if config_file.endswith((".yaml", ".yml")):
+        config: dict[str, any] = yaml.safe_load(raw_config)
+    elif config_file.endswith(".json"):
+        config: dict[str, any] = json.loads(raw_config)
+except FileNotFoundError:
+    config: dict[str, any] = {}
+
+search_config: dict[str, any] = config.get("semantic_search", {"enabled": False})
+
+print(json.dumps(search_config))