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index.js
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index.js
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/**
* Copyright 2016 Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
'use strict';
const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp();
const PromisePool = require('es6-promise-pool').default;
// Maximum concurrent account deletions.
const MAX_CONCURRENT = 3;
/**
* Run once a day at midnight, to cleanup the users
* Manually run the task here https://console.cloud.google.com/cloudscheduler
*/
exports.accountcleanup = functions.pubsub.schedule('every day 00:00').onRun(async context => {
// Fetch all user details.
const inactiveUsers = await getInactiveUsers();
// Use a pool so that we delete maximum `MAX_CONCURRENT` users in parallel.
const promisePool = new PromisePool(() => deleteInactiveUser(inactiveUsers), MAX_CONCURRENT);
await promisePool.start();
console.log('User cleanup finished');
});
/**
* Deletes one inactive user from the list.
*/
function deleteInactiveUser(inactiveUsers) {
if (inactiveUsers.length > 0) {
const userToDelete = inactiveUsers.pop();
// Delete the inactive user.
return admin.auth().deleteUser(userToDelete.uid).then(() => {
return console.log('Deleted user account', userToDelete.uid, 'because of inactivity');
}).catch((error) => {
return console.error('Deletion of inactive user account', userToDelete.uid, 'failed:', error);
});
} else {
return null;
}
}
/**
* Returns the list of all inactive users.
*/
async function getInactiveUsers(users = [], nextPageToken) {
const result = await admin.auth().listUsers(1000, nextPageToken);
// Find users that have not signed in in the last 30 days.
const inactiveUsers = result.users.filter(
user => Date.parse(user.metadata.lastSignInTime) < (Date.now() - 30 * 24 * 60 * 60 * 1000));
// Concat with list of previously found inactive users if there was more than 1000 users.
users = users.concat(inactiveUsers);
// If there are more users to fetch we fetch them.
if (result.pageToken) {
return getInactiveUsers(users, result.pageToken);
}
return users;
}