ske087
42 lines
1.3 KiB
Python
42 lines
1.3 KiB
Python
"""
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Flask extensions initialization
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Centralized extension management for the application
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"""
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from flask_sqlalchemy import SQLAlchemy
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from flask_bcrypt import Bcrypt
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from flask_login import LoginManager
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from flask_migrate import Migrate
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from flask_caching import Cache
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from flask_cors import CORS
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from sqlalchemy import event
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from sqlalchemy.engine import Engine
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import sqlite3
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# Initialize extensions (will be bound to app in create_app)
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db = SQLAlchemy()
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bcrypt = Bcrypt()
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login_manager = LoginManager()
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migrate = Migrate()
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cache = Cache()
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cors = CORS()
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# Configure login manager
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login_manager.login_view = 'auth.login'
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login_manager.login_message = 'Please log in to access this page.'
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login_manager.login_message_category = 'info'
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@event.listens_for(Engine, "connect")
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def _set_sqlite_pragma(dbapi_connection, connection_record):
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"""Enable WAL mode and sane concurrency settings for SQLite.
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WAL lets readers and writers operate concurrently, which prevents
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'database is locked' errors when running under multi-worker Gunicorn.
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"""
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if isinstance(dbapi_connection, sqlite3.Connection):
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cursor = dbapi_connection.cursor()
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cursor.execute("PRAGMA journal_mode=WAL")
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cursor.execute("PRAGMA busy_timeout=5000")
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cursor.execute("PRAGMA synchronous=NORMAL")
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cursor.close()
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