'Firebase: Cloud Functions + Storage Read File

I am currently writing a function in Firebase Functions to be called within my Firebase mobile application. I have the code to call the function, but I do not know how to get this function to interact with Firebase storage.

I have a JSON file (300KB) of public non-sensitive information stored in a Firebase Storage bucket. Based on user input, I will select specific attributes of this JSON file and return the result to the user. However, I cannot figure out how to read this file from my Firebase Functions code. How do I do the following? Also, if anyone knows a more cost-effective way to do this, please let me know!!

exports.searchJSON = functions.https.onCall((data, context) => {
    const keyword = data.searchTerm
    //search the JSON file that is present in the storage bucket
    //save the sliced JSON object as a variable
    //return this to the user
})
node.jsfirebasegoogle-cloud-platformgoogle-cloud-functionsgoogle-cloud-storage


Solution 1:[1]

You have 2 options that you can use. See options below.

  1. Firebase Admin

    const { initializeApp } = require('firebase-admin/app');
const { getStorage } = require('firebase-admin/storage');

initializeApp({
  storageBucket: '<BUCKET_NAME>.appspot.com'
});

const bucket = getStorage().bucket().file("<FILE-PATH>")
.download(function (err, data) {
    if (!err) {
        var object = JSON.parse(data)
        console.log(object);
    }
});

    Make sure you've installed the Admin SDK module.

    npm i firebase-admin

  2. Google Cloud Storage SDK

    const {Storage} = require('@google-cloud/storage');

const storage = new Storage();
const fileBucket = '<BUCKET-NAME>.appspot.com';
const filePath = '<FILE-PATH>';
const bucket = storage.bucket(fileBucket);
const file = bucket.file(filePath);

file.download()
.then((data) => {
const object = JSON.parse(data);
console.log(object);
});

    Make sure you've installed the @google-cloud/storage module:

    npm i @google-cloud/storage

For more information, you may check out these documentations:

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Marc Anthony B

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