ESOCKETTIMEDOUT Cloud Functions for Firebase

Question

我正在将云功能与我的firebase实时数据库一起使用云功能，以便为我的应用进行一些数据管理。

我的功能之一似乎已被终止，因为要完成大约需要100-150秒。这是错误的： ESOCKETTIMEDOUT。

有没有办法防止这种情况？

这是我的功能：

function getTopCarsForUserWithPreferences(userId, genres) {
  const pathToCars = admin.database().ref('cars');
  pathTocars.orderByChild("IsTop").equalTo(true).once("value").then(function(snapshot) { 
      return writeSuggestedCars(userId, genres, snapshot);
  }).catch(reason => {
    console.log(reason)
  })
}
function writeSuggestedCars(userId, genres, snapshot) {
    const carsToWrite = {};
    var snapCount = 0
    snapshot.forEach(function(carSnapshot) {
        snapCount += 1
        const carDict = carSnapshot.val();
        const carGenres = carDict.taCarGenre;
        const genre_one = genres[0];
        const genre_two = genres[1];
        if (carGenres[genre_one] === true ||carGenres[genre_two] == true) {
            carsToWrite[carSnapshot.key] = carDict
    }
        if (snapshot.numChildren() - 1 == snapCount) {
            const pathToSuggest = admin.database().ref('carsSuggested').child(userId);
            pathToSuggest.set(carsToWrite).then(snap => {
            }).catch(reason => {
            console.log(reason)
             });
        }
    });
}

当用户添加首选项时，getTopCarsForUserWithPreferences被调用。cars表也有大约50K条目。

Answer 1

您每次使用异步任务时都需要返回。

编辑：您返回'WritesuggestedCars'，但我认为它永远不会返回价值。我没有编译器，但我认为这是return Promise.resolved（）。您可以将其插入我放置在"这里"的位置？

也许这会起作用：

function getTopCarsForUserWithPreferences(userId, genres) {
  const pathToCars = admin.database().ref('cars');
  return pathTocars.orderByChild("IsTop").equalTo(true).once("value").then(function(snapshot) { 
      return writeSuggestedCars(userId, genres, snapshot);
  }).catch(reason => {
    console.log(reason)
  })
}
function writeSuggestedCars(userId, genres, snapshot) {
    const carsToWrite = {};
    var snapCount = 0
    snapshot.forEach(function(carSnapshot) {
        snapCount += 1
        const carDict = carSnapshot.val();
        const carGenres = carDict.taCarGenre;
        const genre_one = genres[0];
        const genre_two = genres[1];
        if (carGenres[genre_one] === true ||carGenres[genre_two] == true) {
            carsToWrite[carSnapshot.key] = carDict
    }
        if (snapshot.numChildren() - 1 == snapCount) {
            const pathToSuggest = admin.database().ref('carsSuggested').child(userId);
            return pathToSuggest.set(carsToWrite).then(snap => {
                // 'HERE' I think return promise/Promise.resolve() will work
            }).catch(reason => {
            console.log(reason)
             });
        }
    });
}