graphql - Nestjs GraphQL 订阅 onConnect 和 onDisconnect 回调

Question

有没有办法 Hook onConnect 和 onDisconnect lifecycle-events在 Nestjs 中？

Answer 1

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)}`);
    }
  },