部署 Firebase 功能有哪些要求？

Question

我正在尝试通过 index.ts 文件将一个非常简单的函数部署到 firebase 函数。

使用的部署命令是： firebase deploy --only functions

这是 index.ts 文件：

import { getDatabase, ref, get, child } from "firebase/database";

import * as functions from "firebase-functions";
import * as cors from "cors";
import * as express from "express";
import * as bodyParser from "body-parser";

import { AnyExercise, Workout } from "./types";

const app = express();

// parse application/x-www-form-urlencoded
app.use(bodyParser.urlencoded({ extended: false }));

// Automatically allow cross-origin requests
app.use(cors({ origin: true }));

// parse application/json
app.use(bodyParser.json());

const dbRef = ref(getDatabase());

app.get("/workouts/:userId", (req, res) => {
  get(child(dbRef, `workouts/${req.params.userId}`))
    .then((snapshot) => {
      if (snapshot.exists()) {
        console.log("workouts", snapshot.val());
        return snapshot.val();
      } else {
        console.log("No data available");
        return null;
      }
    })
    .then((workouts: Record<Workout["id"], Workout>) => {
      if (!workouts) {
        res.send({ workoutObj: {}, exerciseListByWorkout: {} });
      }
      get(child(dbRef, "exercises")).then((snapshot) => {
        if (snapshot.exists()) {
          const exercises: Record<AnyExercise["id"], AnyExercise> =
            snapshot.val();
          console.log("exercises", exercises);
          const mappedExercises: Record<Workout["id"], AnyExercise[]> = {};
          Object.values(workouts).forEach((workout) => {
            const exList: any[] = [];
            workout.exerciseList?.forEach((exId) => {
              const ex = exercises && exercises[exId];
              if (ex) {
                exList.push(ex);
              }
            });
            mappedExercises[workout.id] = exList;
          });
          res.send({ workoutObj: [], exerciseListByWorkout: mappedExercises });
        } else {
          console.log("No data available");
          res.send({ workoutObj: workouts, exerciseListByWorkout: {} });
        }
      });
    })
    .catch((error) => {
      console.error(error);
      res.send(error);
    });
});

// Expose Express API as a single Cloud Function:
export const api = functions.https.onRequest(app);

这是我尝试部署它时遇到的错误：

Error: Failed to load function definition from source: Failed to generate manifest from 
function source: FirebaseError: Firebase: Need to provide options, when not being deployed 
to hosting via source. (app/no-options).

我只是不明白错误在说什么。在这种情况下，我需要提供哪些消息选项？

Answer 1

您需要先添加实时数据库 JS SDK 并初始化实时数据库。基于此documentation：

您必须在初始化 JavaScript SDK 时指定您的实时数据库 URL。

您可以在 Firebase 控制台的实时数据库部分找到您的实时数据库 URL。根据数据库的位置，数据库 URL 将采用以下形式之一：

• https://[DATABASE_NAME].firebaseio.com（用于 us-central1 中的数据库）
• https://[DATABASE_NAME].[REGION.firebasedatabase.app（适用于所有其他位置的数据库）

使用以下代码 sn -p 初始化 SDK：

import { initializeApp } from "firebase/app";
import { getDatabase } from "firebase/database";

// TODO: Replace the following with your app's Firebase project configuration
// See: https://firebase.google.com/docs/web/learn-more#config-object
const firebaseConfig = {
  // ...
  // The value of `databaseURL` depends on the location of the database
  databaseURL: "https://[DATABASE_NAME].firebaseio.com",
};

// Initialize Firebase
const app = initializeApp(firebaseConfig);


// Initialize Realtime Database and get a reference to the service
const database = getDatabase(app);