将JSON导入Firebase Firestore

时间:2018-03-03 10:44:01

标签: json node.js firebase google-cloud-firestore

在任何人认为这是重复之前,我都知道: How to import CSV or JSON to firebase cloud firestore

如上所述,我正在尝试使用Google Cloud Function将JSON发送到Firestore,允许我将实时数据库转换为Firestore。我一直在使用Maciej Kaputa在上面的链接中提供的脚本作为答案。他提供的脚本如下,与上面链接中提供的脚本完全相同:

const admin = require('../functions/node_modules/firebase-admin');
const serviceAccount = require("./service-key.json");

admin.initializeApp({
 credential: admin.credential.cert(serviceAccount),
 databaseURL: "https://<your-database-name>.firebaseio.com"
});

const data = require("./fakedb.json");

/**
* Data is a collection if
*  - it has a odd depth
*  - contains only objects or contains no objects.
*/
function isCollection(data, path, depth) {
 if (
  typeof data != 'object' ||
  data == null ||
  data.length === 0 ||
  isEmpty(data)
 ) {
return false;
}

for (const key in data) {
 if (typeof data[key] != 'object' || data[key] == null) {
    // If there is at least one non-object item then it data then it cannot be   collection.
  return false;
 }
}

  return true;
}

// Checks if object is empty.
function isEmpty(obj) {
  for(const key in obj) {
    if(obj.hasOwnProperty(key)) {
  return false;
   }
}
 return true;
}

async function upload(data, path) {
 return await admin.firestore()
   .doc(path.join('/'))
  .set(data)
  .then(() => console.log(`Document ${path.join('/')} uploaded.`))
  .catch(() => console.error(`Could not write document ${path.join('/')}.`));
 }

 /**
*
*/
 async function resolve(data, path = []) {
 if (path.length > 0 && path.length % 2 == 0) {
    // Document's length of path is always even, however, one of keys can actually be a collection.

    // Copy an object.
const documentData = Object.assign({}, data);

    for (const key in data) {
     // Resolve each collection and remove it from document data.
  if (isCollection(data[key], [...path, key])) {
      // Remove a collection from the document data.
    delete documentData[key];
      // Resolve a colleciton.
    resolve(data[key], [...path, key]);
    }
  }

  // If document is empty then it means it only consisted of collections.
  if (!isEmpty(documentData)) {
    // Upload a document free of collections.
    await upload(documentData, path);
   }
  } else {
   // Collection's length of is always odd.
   for (const key in data) {
  // Resolve each collection.
     await resolve(data[key], [...path, key]);
   }
  }
   }

resolve(data);

但是,这对我来说似乎不起作用。我以通常的方式设置了我的firebase cli,并通过成功运行标准的“Hello world”函数来检查函数是否可以发送到我的项目。我的JSON不是问题,因为我使用过在线验证器。通过一些研究,我发现eslint ecmaVersion 6不允许异步函数,可以通过将.eslintrc.json文件中的ecmaVersion更改为“ecmaVersion”:2017来解决。接下来,您必须从.eslintrc中删除一些规则.json,这些是// Require the use of === and !==// Disallow null comparisons without type-checking operators// Disallow await inside of loops。现在,通过这些修改,当我在终端中的函数文件夹中键入firebase deploy --only functions时,我被告知该功能已部署并提供了指向我的Firebase控制台的链接。但是,我的功能没有出现在firebase的功能选项卡中,我的数据也没有上传到云端防火墙。有谁知道我做错了什么?可能是因为我没有在函数上调用exports吗?或者这仅用于预构建的Firebase功能?

1 个答案:

答案 0 :(得分:4)

该脚本不是云功能,看起来只需要运行一个Node.js独立脚本,var data = [{ id: 23, name: 'AeriaGames Login', player_limit: -1, player_online: -1, state: 2, last_update: '2018-02-14T16:22:28.000Z' }, { id: 1, name: 'Auth', player_limit: -1, player_online: -1, state: 2, last_update: '2018-03-03T14:17:22.000Z' }, { id: 10, name: 'English 1 (Europe)', player_limit: 4000, player_online: 871, state: 2, last_update: '2018-03-03T14:17:22.000Z' }, { id: 11, name: 'English 2 (Europe)', player_limit: 4000, player_online: 48, state: 2, last_update: '2018-03-03T14:17:22.000Z' }, { id: 12, name: 'English 3 (North America)', player_limit: 4000, player_online: 54, state: 2, last_update: '2018-03-03T14:17:22.000Z' } ] var getPlayerOnline = data.find(obj => obj.id === 12).player_online console.log(getPlayerOnline)在Cloud Firestore中提供您想要的RTDB数据。

如果要将其用作云功能,则需要设置一些导出并将其中的数据用作data的值。注意 - 这只允许您传输已更改/读取的数据。您可能希望至少在第一个数据库中针对整个数据库运行此操作(因此它是一个独立的脚本)。