hffmnn/node-firestore-import-export

Firestore data import and export

node-firestore-import-export

Firestore data importing and exporting tool.

Export a Firestore database, including collections and documents, while keeping the structure intact.

Table of Contents

• Data format
• Installation
• Retrieving credentials
• Usage
  • Command line
    • Export
    • Import
  • Library
    • Export
    • Import
• Contributions

Data Format

Exports a json file with the following format:

{
  "__collections__": {
    "companies": {
      "docA": {
        "name": "Big Co",
        "employee_count": 2012,
        "created": {
          "__datatype__": "timestamp",
          "value": {
            "_seconds": 12343456,
            "_nanoseconds": 7890
          }
        },
        "location": {
          "__datatype__": "geopoint",
          "value": {
            "_latitude": -123.456789,
            "_longitude": 34.5678
          }
        },
        "AdministratorRef": {
          "__datatype__": "documentReference",
          "value": "path/to/the/document"
        },
        "__collections__": {
          "employees": ...,
          "products": ...
        }
      },
      "docB": ...,
      "docC": ...
    },
    "administrators": {
      "docA": ...,
      "docB": ...
    }
  }
}

where __collections__ holds the collections for a given document (or the root of the database).

Imports need to be from a file with the same structure (e.g. from an exported file).

Be careful! This can easily overwrite or mess up your data if you import to the wrong location.

Special Datatypes

Three types of data are serialized in the export:

• Timestamps
• Geopoints
• DocumentReferences

They each are serialized in the following format:

{
  "__datatype__": "timestamp|geopoint|documentReference",
  "value": "The serialized value"
}

Installation

Install using npm.

npm install -g node-firestore-import-export

or yarn

yarn global add node-firestore-import-export

Alternatively download the source.

git clone https://github.com/jloosli/node-firestore-import-export.git

Retrieving Google Cloud Account Credentials

1. Visit the Firebase Console
2. Select your project
3. Navigate to Project Settings (at the time of writing the gear icon button at the top left of the page).
4. Navigate to Service Accounts
5. Click Generate New Private Key

This downloaded json file contains the proper credentials needed for node-firestore-import-export to authenticate.

Usage

Command Line

The path to the account credentials can either be passed with the -a/--accountCredentials flag, or placed in the GOOGLE_APPLICATION_CREDENTIALS environment variable. For example:

export GOOGLE_APPLICATION_CREDENTIALS=path/to/my/credentials.json
firestore-export -p

Export

• -a, --accountCredentials <path> - path to Google Cloud account credentials JSON file. If missing, will look at the GOOGLE_APPLICATION_CREDENTIALS environment variable for the path.
• -b, --backupFile <path>- Filename to store backup. (e.g. backups/full-backup.json). Defaults to firestore-export.json if missing.
• -n, --nodePath <path>- Path to database node to start (e.g. collectionA/docB/collectionC). Backs up full database if empty or missing.
• -p, --prettyPrint - JSON backups done with pretty-printing.

Examples

Export full database

firestore-export --accountCredentials path/to/credentials/file.json --backupFile /backups/myDatabase.json

Export with pretty printing

firestore-export --accountCredentials path/to/credentials/file.json --backupFile /backups/myDatabase.json --prettyPrint

Export from a specific path (and all its children/collections)

firestore-export --accountCredentials path/to/credentials/file.json --backupFile /backups/myDatabase.json --nodePath collectionA/document1/collectionCC

Import

• -a, --accountCredentials <path> - path to Google Cloud account credentials JSON file. If missing, will look at the GOOGLE_APPLICATION_CREDENTIALS environment variable for the path.
• -b, --backupFile <path>- Filename with backup data. (e.g. backups/full-backup.json).
• -n, --nodePath <path>- Path to database node to start (e.g. collectionA/docB/collectionC).
• -y, --yes - Unattended import without confirmation (like hitting "y" from the command line).

Examples

Import full database

firestore-import --accountCredentials path/to/credentials/file.json --backupFile /backups/myDatabase.json

Import to a specific path

firestore-import --accountCredentials path/to/credentials/file.json --backupFile /backups/myDatabase.json --nodePath collectionA/document1/collectionCC

Library

The underlying library can be used in a node or web application for importing and exporting data in a similar fashion

Exporting

import {firestoreExport} from 'node-firestore-import-export';
import * as firebase from 'firebase-admin';

firebase.initializeApp({
    apiKey: "AIza....",                             
    authDomain: "YOUR_APP.firebaseapp.com",         
    databaseURL: "https://YOUR_APP.firebaseio.com", 
    storageBucket: "YOUR_APP.appspot.com",          
    messagingSenderId: "123456789"                  
});

const collectionRef = firebase.firestore().collection('collectionA/docB/collectionC');

firestoreExport(collectionRef)
    .then(data=>console.log(data));

Importing

import {firestoreImport} from 'node-firestore-import-export';
import * as firebase from 'firebase-admin';

firebase.initializeApp({
    apiKey: "AIza....",                             
    authDomain: "YOUR_APP.firebaseapp.com",         
    databaseURL: "https://YOUR_APP.firebaseio.com", 
    storageBucket: "YOUR_APP.appspot.com",          
    messagingSenderId: "123456789"                  
});

const data = {
  docA: {
    name: 'bob',
    __collections__: {}
  },
  docB: {
    name: 'jill',
    __collections__: {}
  }
};

const collectionRef = firebase.firestore().collection('collectionA/docB/collectionC');

firestoreImport(data, collectionRef)
    .then(()=>console.log('Data was imported.'));

Contributions

Feel free to report bugs and make feature requests in the Issue Tracker, fork and create pull requests!

Inspiration

The command line was inspired heavily by SteadyEquipment's node-firestore-backup