Redis Watcher is the Redis watcher for Node-Casbin. With this library, Node-Casbin can synchronize policy changes across multiple enforcer instances via Redis pub/sub.
This watcher is based on ioredis and supports both single Redis instances and Redis clusters.
npm install @casbin/redis-watcherNote: The old package name redis-watcher has been deprecated on NPM. Please use @casbin/redis-watcher instead.
Using Redis:
import { RedisWatcher } from '@casbin/redis-watcher';
import { newEnforcer } from 'casbin';
async function myFunction() {
// Initialize the watcher
// See https://github.com/luin/ioredis/blob/master/API.md#new-redisport-host-options
const watcher = await RedisWatcher.newWatcher('redis://localhost:6379/5');
// Initialize the enforcer
const enforcer = await newEnforcer('examples/authz_model.conf', 'examples/authz_policy.csv');
// Set the watcher for the enforcer
enforcer.setWatcher(watcher);
// Update the policy
await enforcer.addPolicy('alice', 'data1', 'read');
// The policy change will be synchronized to other enforcers via Redis pub/sub
}Using Redis Cluster:
import { RedisWatcher } from '@casbin/redis-watcher';
import { newEnforcer } from 'casbin';
async function myFunction() {
// Initialize the watcher with Redis cluster
// See https://github.com/luin/ioredis/blob/master/API.md#new-clusterstartupnodes-options
const watcher = await RedisWatcher.newWatcherWithCluster([
{ port: 7000, host: 'localhost' },
{ port: 7001, host: 'localhost' },
{ port: 7002, host: 'localhost' }
]);
// Initialize the enforcer
const enforcer = await newEnforcer('examples/authz_model.conf', 'examples/authz_policy.csv');
// Set the watcher for the enforcer
enforcer.setWatcher(watcher);
// Update the policy
await enforcer.addPolicy('bob', 'data2', 'write');
// The policy change will be synchronized to other enforcers via Redis pub/sub
}This project is under Apache 2.0 License. See the LICENSE file for the full license text.