79 lines
2.5 KiB
Python
79 lines
2.5 KiB
Python
# [DEF:backend.src.core.database:Module]
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#
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# @SEMANTICS: database, sqlite, sqlalchemy, session, persistence
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# @PURPOSE: Configures the SQLite database connection and session management.
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# @LAYER: Core
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# @RELATION: DEPENDS_ON -> sqlalchemy
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# @RELATION: USES -> backend.src.models.mapping
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#
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# @INVARIANT: A single engine instance is used for the entire application.
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# [SECTION: IMPORTS]
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from sqlalchemy import create_engine
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from sqlalchemy.orm import sessionmaker, Session
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from backend.src.models.mapping import Base
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# Import models to ensure they're registered with Base
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from backend.src.models.task import TaskRecord
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from backend.src.models.connection import ConnectionConfig
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import os
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# [/SECTION]
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# [DEF:DATABASE_URL:Constant]
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DATABASE_URL = os.getenv("DATABASE_URL", "sqlite:///./mappings.db")
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# [/DEF:DATABASE_URL:Constant]
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# [DEF:TASKS_DATABASE_URL:Constant]
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TASKS_DATABASE_URL = os.getenv("TASKS_DATABASE_URL", "sqlite:///./tasks.db")
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# [/DEF:TASKS_DATABASE_URL:Constant]
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# [DEF:engine:Variable]
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engine = create_engine(DATABASE_URL, connect_args={"check_same_thread": False})
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# [/DEF:engine:Variable]
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# [DEF:tasks_engine:Variable]
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tasks_engine = create_engine(TASKS_DATABASE_URL, connect_args={"check_same_thread": False})
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# [/DEF:tasks_engine:Variable]
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# [DEF:SessionLocal:Class]
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# @PURPOSE: A session factory for the main mappings database.
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SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
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# [/DEF:SessionLocal:Class]
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# [DEF:TasksSessionLocal:Class]
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# @PURPOSE: A session factory for the tasks execution database.
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TasksSessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=tasks_engine)
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# [/DEF:TasksSessionLocal:Class]
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# [DEF:init_db:Function]
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# @PURPOSE: Initializes the database by creating all tables.
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def init_db():
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Base.metadata.create_all(bind=engine)
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Base.metadata.create_all(bind=tasks_engine)
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# [/DEF:init_db:Function]
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# [DEF:get_db:Function]
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# @PURPOSE: Dependency for getting a database session.
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# @POST: Session is closed after use.
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# @RETURN: Generator[Session, None, None]
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def get_db():
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db = SessionLocal()
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try:
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yield db
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finally:
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db.close()
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# [/DEF:get_db:Function]
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# [DEF:get_tasks_db:Function]
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# @PURPOSE: Dependency for getting a tasks database session.
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# @POST: Session is closed after use.
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# @RETURN: Generator[Session, None, None]
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def get_tasks_db():
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db = TasksSessionLocal()
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try:
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yield db
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finally:
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db.close()
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# [/DEF:get_tasks_db:Function]
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# [/DEF:backend.src.core.database:Module]
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