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Merge branch 'redis' into clients-pops
This commit is contained in:
miloschwartz
333
server/db/redis.ts
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333
server/db/redis.ts
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@@ -0,0 +1,333 @@
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import Redis, { RedisOptions } from "ioredis";
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import logger from "@server/logger";
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import config from "@server/lib/config";
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class RedisManager {
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private static instance: RedisManager;
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private client: Redis | null = null;
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private subscriber: Redis | null = null;
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private publisher: Redis | null = null;
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private isEnabled: boolean = false;
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private subscribers: Map<
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string,
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Set<(channel: string, message: string) => void>
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> = new Map();
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private constructor() {
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this.isEnabled = config.getRawConfig().redis?.enabled || false;
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if (this.isEnabled) {
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this.initializeClients();
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}
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}
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public static getInstance(): RedisManager {
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if (!RedisManager.instance) {
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RedisManager.instance = new RedisManager();
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}
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return RedisManager.instance;
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}
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private getRedisConfig(): RedisOptions {
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const redisConfig = config.getRawConfig().redis!;
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const opts: RedisOptions = {
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host: redisConfig.host!,
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port: redisConfig.port!,
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password: redisConfig.password,
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db: redisConfig.db,
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tls: {
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rejectUnauthorized: false
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},
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};
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return opts;
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}
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private initializeClients(): void {
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const config = this.getRedisConfig();
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try {
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// Main client for general operations
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this.client = new Redis(config);
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// Dedicated publisher client
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this.publisher = new Redis(config);
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// Dedicated subscriber client
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this.subscriber = new Redis(config);
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// Set up error handlers
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this.client.on("error", (err) => {
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logger.error("Redis client error:", err);
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});
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this.publisher.on("error", (err) => {
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logger.error("Redis publisher error:", err);
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});
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this.subscriber.on("error", (err) => {
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logger.error("Redis subscriber error:", err);
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});
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// Set up connection handlers
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this.client.on("connect", () => {
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logger.info("Redis client connected");
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});
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this.publisher.on("connect", () => {
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logger.info("Redis publisher connected");
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});
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this.subscriber.on("connect", () => {
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logger.info("Redis subscriber connected");
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});
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// Set up message handler for subscriber
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this.subscriber.on(
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"message",
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(channel: string, message: string) => {
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const channelSubscribers = this.subscribers.get(channel);
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if (channelSubscribers) {
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channelSubscribers.forEach((callback) => {
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try {
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callback(channel, message);
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} catch (error) {
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logger.error(
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`Error in subscriber callback for channel ${channel}:`,
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error
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);
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}
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});
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}
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}
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);
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logger.info("Redis clients initialized successfully");
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} catch (error) {
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logger.error("Failed to initialize Redis clients:", error);
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this.isEnabled = false;
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}
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}
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public isRedisEnabled(): boolean {
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return this.isEnabled && this.client !== null;
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}
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public getClient(): Redis | null {
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return this.client;
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}
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public async set(
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key: string,
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value: string,
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ttl?: number
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): Promise<boolean> {
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if (!this.isRedisEnabled() || !this.client) return false;
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try {
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if (ttl) {
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await this.client.setex(key, ttl, value);
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} else {
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await this.client.set(key, value);
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}
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return true;
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} catch (error) {
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logger.error("Redis SET error:", error);
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return false;
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}
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}
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public async get(key: string): Promise<string | null> {
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if (!this.isRedisEnabled() || !this.client) return null;
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try {
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return await this.client.get(key);
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} catch (error) {
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logger.error("Redis GET error:", error);
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return null;
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}
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}
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public async del(key: string): Promise<boolean> {
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if (!this.isRedisEnabled() || !this.client) return false;
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try {
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await this.client.del(key);
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return true;
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} catch (error) {
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logger.error("Redis DEL error:", error);
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return false;
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}
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}
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public async sadd(key: string, member: string): Promise<boolean> {
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if (!this.isRedisEnabled() || !this.client) return false;
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try {
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await this.client.sadd(key, member);
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return true;
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} catch (error) {
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logger.error("Redis SADD error:", error);
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return false;
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}
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}
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public async srem(key: string, member: string): Promise<boolean> {
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if (!this.isRedisEnabled() || !this.client) return false;
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try {
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await this.client.srem(key, member);
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return true;
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} catch (error) {
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logger.error("Redis SREM error:", error);
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return false;
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}
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}
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public async smembers(key: string): Promise<string[]> {
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if (!this.isRedisEnabled() || !this.client) return [];
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try {
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return await this.client.smembers(key);
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} catch (error) {
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logger.error("Redis SMEMBERS error:", error);
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return [];
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}
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}
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public async hset(
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key: string,
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field: string,
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value: string
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): Promise<boolean> {
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if (!this.isRedisEnabled() || !this.client) return false;
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try {
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await this.client.hset(key, field, value);
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return true;
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} catch (error) {
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logger.error("Redis HSET error:", error);
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return false;
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}
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}
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public async hget(key: string, field: string): Promise<string | null> {
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if (!this.isRedisEnabled() || !this.client) return null;
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try {
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return await this.client.hget(key, field);
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} catch (error) {
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logger.error("Redis HGET error:", error);
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return null;
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}
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}
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public async hdel(key: string, field: string): Promise<boolean> {
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if (!this.isRedisEnabled() || !this.client) return false;
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try {
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await this.client.hdel(key, field);
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return true;
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} catch (error) {
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logger.error("Redis HDEL error:", error);
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return false;
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}
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}
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public async hgetall(key: string): Promise<Record<string, string>> {
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if (!this.isRedisEnabled() || !this.client) return {};
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try {
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return await this.client.hgetall(key);
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} catch (error) {
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logger.error("Redis HGETALL error:", error);
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return {};
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}
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}
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public async publish(channel: string, message: string): Promise<boolean> {
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if (!this.isRedisEnabled() || !this.publisher) return false;
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try {
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await this.publisher.publish(channel, message);
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return true;
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} catch (error) {
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logger.error("Redis PUBLISH error:", error);
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return false;
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}
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}
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public async subscribe(
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channel: string,
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callback: (channel: string, message: string) => void
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): Promise<boolean> {
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if (!this.isRedisEnabled() || !this.subscriber) return false;
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try {
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// Add callback to subscribers map
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if (!this.subscribers.has(channel)) {
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this.subscribers.set(channel, new Set());
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// Only subscribe to the channel if it's the first subscriber
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await this.subscriber.subscribe(channel);
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}
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this.subscribers.get(channel)!.add(callback);
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return true;
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} catch (error) {
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logger.error("Redis SUBSCRIBE error:", error);
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return false;
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}
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}
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public async unsubscribe(
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channel: string,
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callback?: (channel: string, message: string) => void
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): Promise<boolean> {
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if (!this.isRedisEnabled() || !this.subscriber) return false;
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try {
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const channelSubscribers = this.subscribers.get(channel);
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if (!channelSubscribers) return true;
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if (callback) {
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// Remove specific callback
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channelSubscribers.delete(callback);
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if (channelSubscribers.size === 0) {
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this.subscribers.delete(channel);
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await this.subscriber.unsubscribe(channel);
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}
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} else {
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// Remove all callbacks for this channel
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this.subscribers.delete(channel);
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await this.subscriber.unsubscribe(channel);
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}
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return true;
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} catch (error) {
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logger.error("Redis UNSUBSCRIBE error:", error);
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return false;
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}
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}
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public async disconnect(): Promise<void> {
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try {
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if (this.client) {
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await this.client.quit();
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this.client = null;
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}
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if (this.publisher) {
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await this.publisher.quit();
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this.publisher = null;
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}
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if (this.subscriber) {
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await this.subscriber.quit();
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this.subscriber = null;
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}
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this.subscribers.clear();
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logger.info("Redis clients disconnected");
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} catch (error) {
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logger.error("Error disconnecting Redis clients:", error);
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}
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}
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}
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export const redisManager = RedisManager.getInstance();
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export default redisManager;
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