使用文件流和Firebase云功能+云存储上传文件

Question

我使用firebase云功能为我的QR文件上传编写了以下代码

const functions = require('firebase-functions');
const qrcode = require('qrcode')
const admin = require('firebase-admin');
const spawn = require('child-process-promise').spawn;
const serviceAccount = require("./secret.json");
const gcs = require('@google-cloud/storage')();

admin.initializeApp(functions.config({
  credential: admin.credential.cert(serviceAccount),
  storageBucket: "https://SECRET.firebaseio.com"
}));


exports.qrcode = functions.https.onRequest((req, res) => {
  const storage = admin.storage().bucket();
  const dummyFile = storage.file('dummy.png')
  new Promise ((resolve, reject) => qrcode.toFileStream(
    dummyFile.createWriteStream()
      .on('finish', resolve)
      .on('error', reject),
    'DummyQR'))
    .then(console.log("success")) //Doing stuff here later
    .catch(console.log)
  res.send("<script>window.close();</script>")
});

根据文档，我应该能够通过简单地调用admin.storage().bucket();（https://firebase.google.com/docs/storage/admin/start）连接到桶，但是我得到以下错误：

Error: Error occurred while parsing your function triggers.

Error: Bucket name not specified or invalid. Specify a valid bucket name via the storageBucket option when initializing the app, or specify the bucket name explicitly when calling the getBucket() method.

所以我卡住了，不知道该怎么办。如果我尝试手动输入桶admin.storage().bucket("https://SECRET.firebaseio.com");我得到错误

{ ApiError: Not Found
    at Object.parseHttpRespBody (/user_code/node_modules/firebase-admin/node_modules/@google-cloud/storage/node_modules/@google-cloud/common/src/util.js:193:30)
    at Object.handleResp (/user_code/node_modules/firebase-admin/node_modules/@google-cloud/storage/node_modules/@google-cloud/common/src/util.js:131:18)
    at /user_code/node_modules/firebase-admin/node_modules/@google-cloud/storage/node_modules/@google-cloud/common/src/util.js:496:12
    at Request.onResponse [as _callback] (/user_code/node_modules/firebase-admin/node_modules/retry-request/index.js:195:7)
    at Request.self.callback (/user_code/node_modules/firebase-admin/node_modules/request/request.js:185:22)
    at emitTwo (events.js:106:13)
    at Request.emit (events.js:191:7)
    at Request.<anonymous> (/user_code/node_modules/firebase-admin/node_modules/request/request.js:1157:10)
    at emitOne (events.js:96:13)
    at Request.emit (events.js:188:7)
  code: 404,
  errors: [ { domain: 'global', reason: 'notFound', message: 'Not Found' } ],
  response: undefined,
  message: 'Not Found' }

Answer 1

您好像没有正确初始化管理SDK。只需调用不带参数的initializeApp即可获得所有正确的默认值：

admin.initializeApp();

这将使用Cloud Functions为您的项目提供的默认服务帐户。此帐户有权在您的功能中执行大部分操作，无需任何其他配置。

Answer 2

我有同样的问题。我刚刚在初始化应用程序时添加了storageBucket名称，如果您使用的是getSignedUrl方法，则需要包含一个服务帐户，否则该URL将在一周后过期（就像我的情况一样）。

const serviceAccount = require('/your/service/account/key/path');
admin.initializeApp({
    credential: admin.credential.cert(serviceAccount),
    storageBucket: "your-storage-bucket-name.appspot.com",
});

不要忘记更新您的firebase功能

firebase deploy --only functions

在命令行上