feat: add support for SQLite WAL mode and update config settings

Author: getmarkus

.gitignore

@@ -198,6 +198,8 @@ Temporary Items
 
 # SQLite database files
 *.db
+*.db-shm
+*.db-wal
 *.sqlite
 *.sqlite3
 *.sqlite-journal

app/resource_adapters/persistence/sqlmodel/database.py

@@ -1,6 +1,7 @@
 from typing import Generator
 
 from loguru import logger
+from sqlalchemy import text
 from sqlalchemy.engine import Engine
 from sqlmodel import Session, SQLModel, create_engine
 
@@ -25,6 +26,15 @@ def get_engine(database_url: str | None = None) -> Engine:
         database_url = settings.database_url
 
     _engine = create_engine(database_url, echo=True)
+
+    # Enable WAL mode if configured
+    if settings.sqlite_wal_mode and database_url.startswith("sqlite"):
+        with _engine.connect() as conn:
+            # https://www.sqlite.org/pragma.html
+            conn.execute(text("PRAGMA journal_mode=WAL"))
+            # conn.execute(text("PRAGMA synchronous=OFF"))
+            logger.info("SQLite WAL mode enabled")
+
     # Initialize database if using SQLModel
     if settings.execution_mode == "sqlmodel" and not settings.migrate_database:
         logger.info("Creating database tables...")

config.py

@@ -39,3 +39,4 @@ class Settings:
     backend_cors_origins: List[AnyHttpUrl]
     execution_mode: str
     env_smoke_test: str
+    sqlite_wal_mode: bool = False

settings.toml

@@ -4,6 +4,7 @@ database_url = "sqlite:///./issues.db"
 migrate_database = false
 execution_mode = "sqlmodel"
 env_smoke_test = ""
+sqlite_wal_mode = false
 
 # CORS Settings
 backend_cors_origins = []