Copy / migrate users from Firebase Auth to Google Identity Platform

Question

I've been using Firebase auth to handle sign-in / sign up in my application (react/express js) which contains now +2000 users.

We are going to migrate to use a new project in Identity Platform (to benefit from SAML etc) which uses the same SDK of the firebase. So now we have 2 separate projects, is there a way to copy all users in that Identity Platform new project? or can I combine them and use them simultaneously?

Thanks

Answer 1

from the docs: https://cloud.google.com/identity-platform/docs/migrate-users-between-projects-tenants

 var admin = require('firebase-admin'); var sourceApp = admin.initializeApp({ credential: admin.credential.cert('source-project-service-account.json'), }, 'source-app'); var targetApp = admin.initializeApp({ credential: admin.credential.cert('target-project-service-account.json'), }, 'target-app'); var authFrom = sourceApp.auth(); var authTo = targetApp.auth(); function migrateUsers(userImportOptions, nextPageToken) { var pageToken; authFrom.listUsers(1000, nextPageToken) .then(function(listUsersResult) { var users = []; listUsersResult.users.forEach(function(user) { var modifiedUser = user.toJSON(); // Convert to bytes. if (user.passwordHash) { modifiedUser.passwordHash = Buffer.from(user.passwordHash, 'base64'); modifiedUser.passwordSalt = Buffer.from(user.passwordSalt, 'base64'); } // Delete tenant ID if available. This will be set automatically. delete modifiedUser.tenantId; users.push(modifiedUser); }); // Save next page token. pageToken = listUsersResult.pageToken; // Upload current chunk. return authTo.importUsers(users, userImportOptions); }) .then(function(results) { results.errors.forEach(function(indexedError) { console.log('Error importing user ' + indexedError.index); }); // Continue if there is another page. if (pageToken) { migrateUsers(userImportOptions, pageToken); } }) .catch(function(error) { console.log('Error importing users:', error); }); } var userImportOptions = { hash: { algorithm: 'SCRYPT', // The following parameters can be obtained from the "Users" page in the // Cloud Console. The key must be a byte buffer. key: Buffer.from('base64-secret', 'base64'), saltSeparator: Buffer.from('base64SaltSeparator', 'base64'), rounds: 8, memoryCost: 14 } }; migrateUsers(userImportOptions);