How to backup Firestore data?

 

Step 1: Set Up Your Google Cloud Project

 

• Navigate to the Google Cloud Console.
• Choose the project that has your Firebase app.
• If you haven’t already, enable billing on your project. This is necessary to use Google Cloud Storage, where you'll back up your data.

 

Step 2: Enable Cloud Firestore and Cloud Storage in Firebase

 

• Go to the Firebase Console.
• Select your project.
• Ensure Cloud Firestore is enabled. If not, you'll need to enable it by following the Firestore setup process.
• Go to the Storage section and enable Cloud Storage.

 

Step 3: Configure Firestore Exports

 

• In the Google Cloud Console, search for “Firestore” and select it.
• Click on the “Export” tab.
• Setup export destination by specifying a cloud storage location. You can create a bucket in Google Cloud Storage if it doesn't exist yet.

 

Step 4: Set Up Firebase Admin SDK in Your Server Environment

 

• Install Firebase Admin SDK in your project directory using npm or yarn:

  
  npm install firebase-admin
  

• Initialize Firebase Admin SDK in your script:

  
  const admin = require('firebase-admin');
  
  admin.initializeApp({
    credential: admin.credential.applicationDefault(), // Ensure you have set the GOOGLE_APPLICATION_CREDENTIALS environment variable
    databaseURL: 'YOUR_FIREBASE_DATABASE\_URL'
  });
  
  const firestore = admin.firestore();
  

 

Step 5: Create Firestore Export Script

 

• Write a Node.js script for exporting your Firestore data:

  
  const { exec } = require('child\_process');
  
  const projectId = 'YOUR_PROJECT_ID';
  const bucket = 'YOUR_BUCKET_NAME';
  const currentTime = new Date().toISOString();
  const collectionGroupIds = ['YOUR_COLLECTION_IDS']; 
  
  const command = `gcloud firestore export gs://${bucket}/${currentTime} --collection-ids=${collectionGroupIds.join(',')} --project=${projectId}`;
  
  exec(command, (error, stdout, stderr) => {
    if (error) {
      console.error(`Error: ${error.message}`);
      return;
    }
    if (stderr) {
      console.error(`Standard Error: ${stderr}`);
      return;
    }
    console.log(`Standard Output: ${stdout}`);
  });
  

 

Step 6: Schedule Automated Backups

 

• Use a task scheduler like cron on UNIX-based systems or Task Scheduler on Windows to automate backup script execution.

For example, using cron:

  0 2 _ _ * /path/to/node /path/to/your/export-script.js >/dev/null 2>&1
  

This runs the script every day at 2 AM.

 

Step 7: Verify Backup Data

 

• After running the export script, go to your Google Cloud Storage Console to confirm that the exported Firestore data is available in your specified bucket.