Odysseus v1.0

src/rag_singleton.py

@@ -0,0 +1,56 @@
+"""
+RAG singleton instance for the application.
+"""
+import os
+import logging
+import time
+from pathlib import Path
+
+logger = logging.getLogger(__name__)
+
+rag_instance = None
+_last_attempt = 0.0
+_RETRY_INTERVAL = 30  # seconds between re-init attempts
+
+def get_rag_manager():
+    """Disabled: vector document RAG (VectorRAG/ChromaDB) is unused and its
+    client is incompatible with the installed pydantic. Return None so personal-
+    doc routes fall back to non-vector behavior instead of re-attempting (and
+    re-hanging on) a broken ChromaDB init every 30s."""
+    return None
+
+
+def _get_rag_manager_legacy():
+    """Original lazy initializer, kept for reference / easy re-enable."""
+    global rag_instance, _last_attempt
+
+    if rag_instance is not None:
+        return rag_instance
+
+    now = time.monotonic()
+    if now - _last_attempt < _RETRY_INTERVAL:
+        return None  # too soon to retry
+
+    _last_attempt = now
+
+    try:
+        from src.rag_vector import VectorRAG
+
+        base_dir = Path(__file__).parent.parent
+        persist_dir = os.path.join(base_dir, "data", "rag")
+
+        rag_instance = VectorRAG(persist_directory=persist_dir)
+        if not rag_instance.healthy:
+            logger.warning("VectorRAG created but not healthy, will retry later")
+            rag_instance = None
+        else:
+            logger.info("Initialized VectorRAG with ChromaDB")
+
+    except ImportError as e:
+        logger.warning(f"VectorRAG not available: {e}")
+        rag_instance = None
+    except Exception as e:
+        logger.error(f"Failed to initialize RAG: {e}")
+        rag_instance = None
+
+    return rag_instance