Disable PostgreSQL database connections on Hugging Face Spaces

src/liveness/liveness_detector.py

@@ -348,6 +348,8 @@ class LivenessDetector:
     def _log_metrics(self, is_live: bool, confidence: float, attack_type: Optional[str],
                    processing_time_ms: float, image_hash: str, face_count: int, request_id: str):
         """Log liveness detection metrics to TimescaleDB if available"""
+        if os.environ.get('HF_SPACE', '0') == '1':
+            return
         try:
             import psycopg2
             import datetime

src/middleware/api_auth.py

@@ -12,6 +12,8 @@ import os
 IS_HF_SPACE = os.environ.get('HF_SPACE', '0') == '1'
 
 def get_db_connection():
+    if IS_HF_SPACE:
+        raise RuntimeError("PostgreSQL database is disabled on HuggingFace Spaces.")
     if not HAS_POSTGRES:
         raise RuntimeError("PostgreSQL / psycopg2 is not installed or available.")
     # Helper to get DB connection (duplicated from telemetry for standalone usage)

src/routes/main.py

@@ -161,16 +161,19 @@ def health_check():
 
     # Database status
     db_status = 'unknown'
-    try:
-        from src.utils.telemetry import get_db_connection
-        conn = get_db_connection()
-        cur = conn.cursor()
-        cur.execute('SELECT 1')
-        cur.close()
-        conn.close()
-        db_status = 'connected'
-    except Exception as e:
-        db_status = f'error: {str(e)[:80]}'
+    if os.environ.get('HF_SPACE', '0') == '1':
+        db_status = 'disabled'
+    else:
+        try:
+            from src.utils.telemetry import get_db_connection
+            conn = get_db_connection()
+            cur = conn.cursor()
+            cur.execute('SELECT 1')
+            cur.close()
+            conn.close()
+            db_status = 'connected'
+        except Exception as e:
+            db_status = f'error: {str(e)[:80]}'
     health['database'] = db_status
 
     return jsonify(health)
@@ -180,6 +183,9 @@ def health_check():
 @main_bp.route('/api/v1/history', methods=['GET'])
 def get_history():
     """Fetch recent detection history"""
+    if os.environ.get('HF_SPACE', '0') == '1':
+        return jsonify([])
+        
     try:
         from src.utils.telemetry import get_db_connection
         conn = get_db_connection()

src/utils/telemetry.py

@@ -34,6 +34,8 @@ except (ImportError, AttributeError):
     }
 
 def get_db_connection():
+    if os.environ.get('HF_SPACE', '0') == '1':
+        raise RuntimeError("PostgreSQL database is disabled on HuggingFace Spaces.")
     if not HAS_POSTGRES:
         raise RuntimeError("PostgreSQL / psycopg2 is not installed or available.")
     return psycopg2.connect(**DB_PARAMS)

src/verification/face_matcher.py

@@ -489,6 +489,8 @@ class FaceMatcher:
     
     def _log_metrics(self, image1_path: str, image2_path: str, similarity: float, result: str, request_id: str):
         """Log face matching metrics to TimescaleDB if available"""
+        if os.environ.get('HF_SPACE', '0') == '1':
+            return
         try:
             import psycopg2