Export json from Firestore

I just wrote a backup and restore for Firestore. You can have a try on my GitHub.

https://github.com/dalenguyen/firestore-backup-restore

Thanks,

There is not, you'd need to come up with your own process such as querying a collection and looping over everything.

Update

As of August 7th, 2018, we do have a managed export system that allows you to dump your data into a GCS bucket. While this isn't JSON, it is a format that is the same as Cloud Datastore uses, so BigQuery understands it. This means you can then import it into BigQuery.

Google made it harder than it needed to be, so the community found a workaround. If you have npm installed, you can do this:

Export

npx -p node-firestore-import-export firestore-export -a credentials.json -b backup.json

Import

npx -p node-firestore-import-export firestore-import -a credentials.json -b backup.json

Source

I've written a tool that traverses the collections/documents of the database and exports everything into a single json file. Plus, it will import the same structure as well (helpful for cloning/moving Firestore databases). Since I've had a few colleagues use the code, I figured I would publish it as an NPM package. Feel free to try it and give some feedback.

https://www.npmjs.com/package/node-firestore-import-export

If someone wants a solution using Python 2 or 3.

Edit: note that this does not backup the rules

Fork it on https://github.com/RobinManoli/python-firebase-admin-firestore-backup

First install and setup Firebase Admin Python SDK: https://firebase.google.com/docs/admin/setup

Then install it in your python environment:

pip install firebase-admin

Install the Firestore module:

pip install google-cloud-core
pip install google-cloud-firestore

(from ImportError: Failed to import the Cloud Firestore library for Python)

Python Code

# -*- coding: UTF-8 -*-

import firebase_admin
from firebase_admin import credentials, firestore
import json

cred = credentials.Certificate('xxxxx-adminsdk-xxxxx-xxxxxxx.json') # from firebase project settings
default_app = firebase_admin.initialize_app(cred, {
    'databaseURL' : 'https://xxxxx.firebaseio.com'
})

db = firebase_admin.firestore.client()

# add your collections manually
collection_names = ['myFirstCollection', 'mySecondCollection']
collections = dict()
dict4json = dict()
n_documents = 0

for collection in collection_names:
    collections[collection] = db.collection(collection).get()
    dict4json[collection] = {}
    for document in collections[collection]:
        docdict = document.to_dict()
        dict4json[collection][document.id] = docdict
        n_documents += 1

jsonfromdict = json.dumps(dict4json)

path_filename = "/mypath/databases/firestore.json"
print "Downloaded %d collections, %d documents and now writing %d json characters to %s" % ( len(collection_names), n_documents, len(jsonfromdict), path_filename )
with open(path_filename, 'w') as the_file:
    the_file.write(jsonfromdict)