def __new__(cls, db, *args, **kwargs):
redis_conf = current_app.config["REDIS_CONF"]
if not cls.redis[db]:
# 支持多线程
with cls._instance_lock:
if not cls.redis[db]:
o = Redis.__new__(cls, *args)
# Redis.__init__(o, db=db, **cls.redis_conf)
Redis.__init__(o, db=db, **redis_conf)
cls.redis.insert(db, o)
return cls.redis[db]
from redis import Redis
api_blueprint = Blueprint("api", __name__, url_prefix="/api")
rest_api = Api(api_blueprint)
jwt = JWTManager()
# Restplus implements its own error handlers while JWT's error handlers are implemented with flask's native error
# handlers. Restplus catches the error before the native Flask implementation does and therefore, the error never makes
# it to Flask JWT. This means that the error messages JWT wants to throw never make it to the client. Here, we use a
# protected JWT method to add the error handlers manually to the restplus api instance.
# https://github.com/vimalloc/flask-jwt-extended/issues/83 and https://github.com/vimalloc/flask-jwt-extended/issues/86
# noinspection PyProtectedMember
jwt._set_error_handler_callbacks(rest_api)
# Construct now, defer initialization to runtime
redis_db = Redis.__new__(Redis)
def init_redis_db(config):
"""
Defers Redis database initialization to runtime so that different configurations can be used for dev, test, & prod.
"""
redis_db.__init__(host=config.REDIS_HOST,
port=config.REDIS_PORT,
db=config.REDIS_DB,
password=config.REDIS_DB_PASS,
decode_responses=True)
return redis_db
