functions에서 database 접근하기

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realtime database 문서 검색

firebase 문서 > 실시간 데이터베이스 > 관리 > 시작하기

관리자 권한으로 인증 - node.js - 코드 샘플 복사

이 코드들은 프론트엔드에서 사용한 아래의 코드들을 대신하는 것

const firebaseConfig = {
  apiKey: "AIzaSyCQk_0gmB2f6avo5FcW1J6nF7GlDnt2TOo",
  authDomain: "test-database100.firebaseapp.com",
  databaseURL: "https://test-database100-default-rtdb.firebaseio.com",
  projectId: "test-database100",
  storageBucket: "test-database100.appspot.com",
  messagingSenderId: "998427758923",
  appId: "1:998427758923:web:1484ed68cb4961320898ce"
};

 

비쥬얼스튜디오

index.js 파일에 붙여넣기

/**
 * Import function triggers from their respective submodules:
 *
 * const {onCall} = require("firebase-functions/v2/https");
 * const {onDocumentWritten} = require("firebase-functions/v2/firestore");
 *
 * See a full list of supported triggers at https://firebase.google.com/docs/functions
 */

const { onRequest } = require("firebase-functions/v2/https");
const logger = require("firebase-functions/logger");

// Create and deploy your first functions
// https://firebase.google.com/docs/functions/get-started

// node.js - 백엔드

const functions = require("firebase-admin");
let admin = require("firebase-admin");

// Fetch the service account key JSON file contents
let serviceAccount = require("path/to/serviceAccountKey.json");

// Initialize the app with a service account, granting admin privileges
admin.initializeApp({
  credential: admin.credential.cert(serviceAccount),
  // The database URL depends on the location of the database
  databaseURL: "https://DATABASE_NAME.firebaseio.com"
});

// As an admin, the app has access to read and write all data, regardless of Security Rules
let db = admin.database();
let ref = db.ref("restricted_access/secret_document");
ref.once("value", function(snapshot) {
  console.log(snapshot.val());
});

exports.helloWorld = onRequest((request, response) => {
    //   logger.info("Hello logs!", {structuredData: true});
    response.send("Hello from Firebase!");
});

exports.ceocamp = onRequest((request, response) => {
    let byul ={
        name : "이한별",
        age : 33,
        height : 176
    }
    response.send(byul);
});

var admin = require("firebase-admin");

// Fetch the service account key JSON file contents
var serviceAccount = require("path/to/serviceAccountKey.json");

// Initialize the app with a service account, granting admin privileges
admin.initializeApp({
  credential: admin.credential.cert(serviceAccount),
  // The database URL depends on the location of the database
  databaseURL: "https://DATABASE_NAME.firebaseio.com"
});

// As an admin, the app has access to read and write all data, regardless of Security Rules
var db = admin.database();
var ref = db.ref("restricted_access/secret_document");
ref.once("value", function(snapshot) {
  console.log(snapshot.val());
});

단, 여기서 serviceAccountKey와 DATABASE_NAME은 나의 고유값으로 바꿔야 한다

 

 

고유값 찾기

firebase

프로젝트 개요

프로젝트 설정

서비스 계정

node.js

코드 복사

비쥬얼스튜디오

// Initialize the app with a service account, granting admin privileges
admin.initializeApp({
  credential: admin.credential.cert(serviceAccount),
  // The database URL depends on the location of the database
  databaseURL: "https://DATABASE_NAME.firebaseio.com"
});

->

admin.initializeApp({
  credential: admin.credential.cert(serviceAccount),
  databaseURL: "https://test-database100-default-rtdb.firebaseio.com"
});

firebase

새 비공개 키 생성

키 생성(json 파일이 다운로드 된다)

파일 열기

키 값들이 들어있다

이 파일을 해당 폴더의 functions 폴더에 넣어주기

파일 이름 복사

비쥬얼스튜디오

index.js

let serviceAccount = require("path/to/serviceAccountKey.json");

->

let serviceAccount = require("test-database100-firebase-adminsdk-o6kef-ca7582428c.json");

단, 동일한 경로(functions -> index.js)인것을 알리기 위해 "./"를 앞에 넣어준다

let serviceAccount = require("./test-database100-firebase-adminsdk-o6kef-ca7582428c.json");

만약 다운로드 폴더 안에 있다면 아래 처럼 표시

let serviceAccount = require("/downloads/test-database100-firebase-adminsdk-o6kef-ca7582428c.json");

 

realtime database 가져오기

비쥬얼스튜디오

exports.helloWorld = onRequest((request, response) => {
    db.ref("testtest").set("functions 이용해서 database에 값 넣기");
    // db.ref("키값").set("벨류값");
    response.send("Hello from Firebase!");
});

 

여기까지의 최종 코드

/**
 * Import function triggers from their respective submodules:
 *
 * const {onCall} = require("firebase-functions/v2/https");
 * const {onDocumentWritten} = require("firebase-functions/v2/firestore");
 *
 * See a full list of supported triggers at https://firebase.google.com/docs/functions
 */

const { onRequest } = require("firebase-functions/v2/https");
const logger = require("firebase-functions/logger");

// Create and deploy your first functions
// https://firebase.google.com/docs/functions/get-started

// node.js - 백엔드

const functions = require("firebase-admin");
let admin = require("firebase-admin");

// Fetch the service account key JSON file contents
let serviceAccount = require("./test-database100-firebase-adminsdk-o6kef-ca7582428c.json");

admin.initializeApp({
    credential: admin.credential.cert(serviceAccount),
    databaseURL: "https://test-database100-default-rtdb.firebaseio.com"
});

// As an admin, the app has access to read and write all data, regardless of Security Rules
let db = admin.database();

exports.helloWorld = functions.https.onRequest((request, response) => {
    db.ref("testtest").set("functions 이용해서 database에 값 넣기");
    response.send("Hello from Firebase!");
});

exports.ceocamp = functions.https.onRequest((request, response) => {
    let byul = {
        name: "이한별",
        age: 33,
        height: 176
    }
    response.send(byul);
});

 

터미널

해당 폴더 들어가기(testdatabase)

firebase deploy