Nestjs GraphQL订阅onConnect&；onDisconnect回调

在Nestjs中是否有钩住onConnect和onDisconnect的方法？

事实证明，您可以在graphql配置的订阅部分提供它们

 subscriptions: {
    keepAlive: subscriptionsTimeout,
    onConnect: (connectionParams, websocket, context) => {
      console.log(`connectionParams: ${connectionParams}, websocket: ${JSON.stringify(websocket)}}, context ${JSON.stringify(context)}`);
    },
    onDisconnect: ( websocket, context) => {
      console.log(`websocket: ${JSON.stringify(websocket)}}, context ${JSON.stringify(context)}`);
    }
  },