fix: Resolve database permission errors and OMP_NUM_THREADS warning

- Change default database path from sessions.db to /tmp/sessions.db (writable in containers)
- Update EfficientContextManager to accept db_path parameter and use settings
- Update all config files (config.py, src/config.py) to use /tmp for database paths
- Update FAISS index path to /tmp/embeddings.faiss
- Update ZeroGPUUserManager default db_path to /tmp/sessions.db
- Fix libgomp OMP_NUM_THREADS warning by setting ENV variables in Dockerfile
- Prevents sqlite3.OperationalError: unable to open database file

Dockerfile

@@ -16,6 +16,11 @@ RUN apt-get update && apt-get install -y \
 # Set working directory
 WORKDIR /app
 
+# Set environment variables to prevent warnings
+# Fix libgomp OMP_NUM_THREADS warning
+ENV OMP_NUM_THREADS=4
+ENV MKL_NUM_THREADS=4
+
 # Copy requirements first for better caching
 COPY requirements.txt .
 

config.py

@@ -17,8 +17,9 @@ class Settings(BaseSettings):
     cache_ttl: int = int(os.getenv("CACHE_TTL", "3600"))
     
     # Database settings
-    db_path: str = os.getenv("DB_PATH", "sessions.db")
-    faiss_index_path: str = os.getenv("FAISS_INDEX_PATH", "embeddings.faiss")
+    # Use /tmp for database in Docker containers (writable location)
+    db_path: str = os.getenv("DB_PATH", "/tmp/sessions.db")
+    faiss_index_path: str = os.getenv("FAISS_INDEX_PATH", "/tmp/embeddings.faiss")
     
     # Session settings
     session_timeout: int = int(os.getenv("SESSION_TIMEOUT", "3600"))

src/config.py

@@ -17,8 +17,9 @@ class Settings(BaseSettings):
     cache_ttl: int = int(os.getenv("CACHE_TTL", "3600"))
     
     # Database settings
-    db_path: str = os.getenv("DB_PATH", "sessions.db")
-    faiss_index_path: str = os.getenv("FAISS_INDEX_PATH", "embeddings.faiss")
+    # Use /tmp for database in Docker containers (writable location)
+    db_path: str = os.getenv("DB_PATH", "/tmp/sessions.db")
+    faiss_index_path: str = os.getenv("FAISS_INDEX_PATH", "/tmp/embeddings.faiss")
     
     # Session settings
     session_timeout: int = int(os.getenv("SESSION_TIMEOUT", "3600"))

src/context_manager.py

@@ -49,7 +49,7 @@ class TransactionManager:
                 conn.close()
 
 class EfficientContextManager:
-    def __init__(self, llm_router=None):
+    def __init__(self, llm_router=None, db_path=None):
         self.session_cache = {}  # In-memory for active sessions
         self._session_cache = {}  # Enhanced in-memory cache with timestamps
         self.cache_config = {
@@ -58,7 +58,16 @@ class EfficientContextManager:
             "compression": "gzip",
             "eviction_policy": "LRU"
         }
-        self.db_path = "sessions.db"
+        # Use provided db_path or get from settings, fallback to /tmp/sessions.db
+        if db_path is None:
+            try:
+                from src.config import settings
+                db_path = settings.db_path
+            except (ImportError, AttributeError):
+                # Fallback to writable location in containers
+                import os
+                db_path = os.getenv("DB_PATH", "/tmp/sessions.db")
+        self.db_path = db_path
         self.llm_router = llm_router  # For generating context summaries
         logger.info(f"Initializing ContextManager with DB path: {self.db_path}")
         self.transaction_manager = TransactionManager(self.db_path)

src/llm_router.py

@@ -36,7 +36,7 @@ class LLMRouter:
                     base_url = zero_gpu_config.get("base_url", os.getenv("ZERO_GPU_API_URL", "https://bm9njt1ypzvuqw-8000.proxy.runpod.net"))
                     admin_email = zero_gpu_config.get("admin_email", os.getenv("ZERO_GPU_ADMIN_EMAIL", ""))
                     admin_password = zero_gpu_config.get("admin_password", os.getenv("ZERO_GPU_ADMIN_PASSWORD", ""))
-                    db_path = zero_gpu_config.get("db_path", os.getenv("DB_PATH", "sessions.db"))
+                    db_path = zero_gpu_config.get("db_path", os.getenv("DB_PATH", "/tmp/sessions.db"))
                     
                     if admin_email and admin_password:
                         self.zero_gpu_user_manager = ZeroGPUUserManager(

zero_gpu_user_manager.py

@@ -17,7 +17,7 @@ logger = logging.getLogger(__name__)
 class ZeroGPUUserManager:
     """Manages per-user ZeroGPU API accounts with automatic registration and token management"""
     
-    def __init__(self, base_url: str, admin_email: str, admin_password: str, db_path: str = "sessions.db"):
+    def __init__(self, base_url: str, admin_email: str, admin_password: str, db_path: str = "/tmp/sessions.db"):
         """
         Initialize user manager