app.py 文件源码

def build_app(configure_logging=True, with_keystone=True):
    app = flask.Flask(__name__)
    app.url_map.converters.update(converters.ALL)
    api.init_app(app)  # init_app spoils Api object if app is a blueprint
    app.config["SQLALCHEMY_TRACK_MODIFICATIONS"] = False  # silence warning
    # TUNINGBOX_SETTINGS is the path to the file with tuning_box configuration
    app.config.from_envvar('TUNINGBOX_SETTINGS', silent=True)
    # These handlers work if PROPAGATE_EXCEPTIONS is on (Nailgun case)
    app.register_error_handler(sa_exc.IntegrityError, handle_integrity_error)
    app.register_error_handler(errors.TuningboxIntegrityError,
                               handle_integrity_error)
    app.register_error_handler(errors.TuningboxNotFound,
                               handle_object_not_found)
    app.register_error_handler(errors.RequestValidationError,
                               handle_request_validation_error)
    app.register_error_handler(errors.KeysOperationError,
                               handle_keys_operation_error)
    db.db.init_app(app)
    if configure_logging:
        log_level = app.config.get('LOG_LEVEL', 'DEBUG')
        logger.init_logger(app, log_level)
    if with_keystone:
        app.wsgi_app = keystone.KeystoneMiddleware(app)
    return app