firebase - Firebase onWrite() 的云函数 promise 总是超时

Question

我正在尝试运行云函数并更改数据库上的值，但每次我返回带有或不带有“firebase-admin”模块的 promise 时，函数都会在 60 秒后超时。

这是我的代码:

var functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp(functions.config().firebase);

exports.handleDisconnection = functions.database.ref('/pages/{pageId}/listeners/disconnection')
  .onWrite(event => {
    const eventSnapshot = event.data;
    const isDisconnected = eventSnapshot.val();
    const pageId = event.params.pageId;
    console.log('there is a new disconnection on page ' + pageId + ', isDisconnected: ' + isDisconnected);
    if (eventSnapshot.changed() && isDisconnected) {
      console.log('is disconnected true');
      return admin.database().ref('/pages/'+pageId+'/listeners/disconnection').set({ disconnection: false }).then(() => {
        console.log('Write succeeded!'); // this never triggers
      });
    }
});

Answer 1

 if (eventSnapshot.changed() && isDisconnected) {
       console.log('is disconnected true');`
       return admin.database.ref('/...')
       .set({ disconnection: false }, err => {
                 if(!err)  // No error 
                       { console.log("Set Updated"); }
       });

set 方法 有一个回调函数，将 err 作为对象传入您可以使用err来获取操作状态。