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firestore-data-migrator

What is this?

This a simple tool that can migrate data between two cloud firestore instances sitting under different GCP accounts.

What do I need?

You need four things.

  • Service account json for the database providing the data
  • Service account json for the database receiving the data
  • The name of the collection where the database currently sits
  • The name of the collection you want to insert the data into
  • The name of the firebase project you're exporting to

Where do I get "Service account jsons"?

On the Google Cloud Platform service account page select or create a new service account. Then go into the account, click edit at the top and click create key at the bottom. Choose json and a file will download.

Got those, how do I run?

git clone git@github.com:Capgemini-AIE/firestore-data-migrator.git

yarn install

INPUT_CREDS="path/to/input/service/acc.json" INPUT_COLLECTION="collection name" OUTPUT_CREDS=".path/to/output/service/acc.json" OUTPUT_COLLECTION="collection" OUTPUT_APP_NAME="name of your second firebase app" node migrator.js

Notes

If your collection a substantial amount of document the migrator will chunk your documents into batches of 10 to prevent errors.

Authors

Created by Capgemini AIE London team.