add redis client

dist/index.cjs

@@ -31,6 +31,7 @@ __export(src_exports, {
   SINGLETON_KEY: () => SINGLETON_KEY,
   SyncLocker: () => SyncLocker,
   ZError: () => ZError,
+  ZRedisClient: () => ZRedisClient,
   createAsyncQueue: () => createAsyncQueue,
   createAsyncQueues: () => createAsyncQueues,
   singleton: () => singleton
@@ -159,11 +160,262 @@ var DeferredPromise = class {
     });
   }
 };
+
+// src/redis/ZRedisClient.ts
+var import_redis = require("redis");
+var import_util = require("util");
+var ZRedisClient = class {
+  constructor(opts) {
+    this.subscriptions = {};
+    this.handleSubscription = (channel, message) => {
+      if (this.subscriptions[channel]) {
+        for (let i = 0, l = this.subscriptions[channel].length; i < l; i++) {
+          this.subscriptions[channel][i](JSON.parse(message));
+        }
+      }
+    };
+    this.sub = (0, import_redis.createClient)(opts);
+    this.pub = (0, import_redis.createClient)(opts);
+    this.sub.setMaxListeners(0);
+    this.subscribeAsync = (0, import_util.promisify)(this.sub.subscribe).bind(this.sub);
+    this.unsubscribeAsync = (0, import_util.promisify)(this.sub.unsubscribe).bind(this.sub);
+    this.publishAsync = (0, import_util.promisify)(this.pub.publish).bind(this.pub);
+    this.smembersAsync = (0, import_util.promisify)(this.pub.smembers).bind(this.pub);
+    this.sismemberAsync = (0, import_util.promisify)(this.pub.sismember).bind(this.pub);
+    this.hlenAsync = (0, import_util.promisify)(this.pub.hlen).bind(this.pub);
+    this.hgetAsync = (0, import_util.promisify)(this.pub.hget).bind(this.pub);
+    this.pubsubAsync = (0, import_util.promisify)(this.pub.pubsub).bind(this.pub);
+    this.decrAsync = (0, import_util.promisify)(this.pub.decr).bind(this.pub);
+    this.incrAsync = (0, import_util.promisify)(this.pub.incr).bind(this.pub);
+  }
+  async subscribe(topic, callback) {
+    if (!this.subscriptions[topic]) {
+      this.subscriptions[topic] = [];
+    }
+    this.subscriptions[topic].push(callback);
+    if (this.sub.listeners("message").length === 0) {
+      this.sub.addListener("message", this.handleSubscription);
+    }
+    await this.subscribeAsync(topic);
+    return this;
+  }
+  async unsubscribe(topic, callback) {
+    if (callback) {
+      const index = this.subscriptions[topic].indexOf(callback);
+      this.subscriptions[topic].splice(index, 1);
+    } else {
+      this.subscriptions[topic] = [];
+    }
+    if (this.subscriptions[topic].length === 0) {
+      await this.unsubscribeAsync(topic);
+    }
+    return this;
+  }
+  async publish(topic, data) {
+    if (data === void 0) {
+      data = false;
+    }
+    await this.publishAsync(topic, JSON.stringify(data));
+  }
+  async exists(roomId) {
+    return (await this.pubsubAsync("channels", roomId)).length > 0;
+  }
+  async setex(key, value, seconds) {
+    return new Promise((resolve) => this.pub.setex(key, seconds, value, resolve));
+  }
+  async expire(key, seconds) {
+    return new Promise((resolve) => this.pub.expire(key, seconds, resolve));
+  }
+  async get(key) {
+    return new Promise((resolve, reject) => {
+      this.pub.get(key, (err, data) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(data);
+      });
+    });
+  }
+  async set(key, val) {
+    return new Promise((resolve) => {
+      this.pub.set(key, val, () => {
+        resolve && resolve("");
+      });
+    });
+  }
+  async del(roomId) {
+    return new Promise((resolve) => {
+      this.pub.del(roomId, resolve);
+    });
+  }
+  async sadd(key, value) {
+    return new Promise((resolve) => {
+      this.pub.sadd(key, value, resolve);
+    });
+  }
+  async smembers(key) {
+    return await this.smembersAsync(key);
+  }
+  async sismember(key, field) {
+    return await this.sismemberAsync(key, field);
+  }
+  async srem(key, value) {
+    return new Promise((resolve) => {
+      this.pub.srem(key, value, resolve);
+    });
+  }
+  async scard(key) {
+    return new Promise((resolve, reject) => {
+      this.pub.scard(key, (err, data) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(data);
+      });
+    });
+  }
+  async srandmember(key) {
+    return new Promise((resolve, reject) => {
+      this.pub.srandmember(key, (err, data) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(data);
+      });
+    });
+  }
+  async sinter(...keys) {
+    return new Promise((resolve, reject) => {
+      this.pub.sinter(...keys, (err, data) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(data);
+      });
+    });
+  }
+  async zadd(key, value, member) {
+    return new Promise((resolve) => {
+      this.pub.zadd(key, value, member, resolve);
+    });
+  }
+  async zincrby(key, value, member) {
+    return new Promise((resolve) => {
+      this.pub.zincrby(key, value, member, resolve);
+    });
+  }
+  async zrangebyscore(key, min, max) {
+    return new Promise((resolve, reject) => {
+      this.pub.zrangebyscore(key, min, max, "withscores", (err, data) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(data);
+      });
+    });
+  }
+  async zcard(key) {
+    return new Promise((resolve, reject) => {
+      this.pub.zcard(key, (err, data) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(data);
+      });
+    });
+  }
+  async zcount(key, min, max) {
+    return new Promise((resolve, reject) => {
+      this.pub.zcount(key, min, max, (err, data) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(data);
+      });
+    });
+  }
+  async zrevrank(key, member) {
+    return new Promise((resolve, reject) => {
+      this.pub.zrevrank(key, member, (err, data) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(data);
+      });
+    });
+  }
+  async zscore(key, member) {
+    return new Promise((resolve, reject) => {
+      this.pub.zscore(key, member, (err, data) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(data);
+      });
+    });
+  }
+  async zrevrange(key, start, end) {
+    return new Promise((resolve, reject) => {
+      this.pub.zrevrange(key, start, end, "withscores", (err, data) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(data);
+      });
+    });
+  }
+  async hset(key, field, value) {
+    return new Promise((resolve) => {
+      this.pub.hset(key, field, value, resolve);
+    });
+  }
+  async hincrby(key, field, value) {
+    return new Promise((resolve) => {
+      this.pub.hincrby(key, field, value, resolve);
+    });
+  }
+  async hget(key, field) {
+    return await this.hgetAsync(key, field);
+  }
+  async hgetall(key) {
+    return new Promise((resolve, reject) => {
+      this.pub.hgetall(key, (err, values) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(values);
+      });
+    });
+  }
+  async hdel(key, field) {
+    return new Promise((resolve, reject) => {
+      this.pub.hdel(key, field, (err, ok) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(ok);
+      });
+    });
+  }
+  async hlen(key) {
+    return await this.hlenAsync(key);
+  }
+  async incr(key) {
+    return await this.incrAsync(key);
+  }
+  async decr(key) {
+    return await this.decrAsync(key);
+  }
+};
+ZRedisClient = __decorateClass([
+  singleton
+], ZRedisClient);
 // Annotate the CommonJS export names for ESM import in node:
 0 && (module.exports = {
   SINGLETON_KEY,
   SyncLocker,
   ZError,
+  ZRedisClient,
   createAsyncQueue,
   createAsyncQueues,
   singleton

dist/index.d.cts

@@ -1,6 +1,7 @@
 export { ZError } from './common/ZError.cjs';
 export { SyncLocker } from './common/SyncLocker.cjs';
 export { AsyncQueue, createAsyncQueue, createAsyncQueues } from './common/AsyncQueue.cjs';
+import { RedisClient, ClientOpts } from 'redis';
 
 /**
  * 单例化一个class
@@ -18,4 +19,59 @@ type Singleton<T extends new (...args: any[]) => any> = T & {
 };
 declare const singleton: <T extends new (...args: any[]) => any>(classTarget: T) => T;
 
-export { SINGLETON_KEY, type Singleton, singleton };
+type Callback = (...args: any[]) => void;
+declare class ZRedisClient {
+    pub: RedisClient;
+    sub: RedisClient;
+    protected subscribeAsync: any;
+    protected unsubscribeAsync: any;
+    protected publishAsync: any;
+    protected subscriptions: {
+        [channel: string]: Callback[];
+    };
+    protected smembersAsync: any;
+    protected sismemberAsync: any;
+    protected hgetAsync: any;
+    protected hlenAsync: any;
+    protected pubsubAsync: any;
+    protected incrAsync: any;
+    protected decrAsync: any;
+    constructor(opts?: ClientOpts);
+    subscribe(topic: string, callback: Callback): Promise<this>;
+    unsubscribe(topic: string, callback?: Callback): Promise<this>;
+    publish(topic: string, data: any): Promise<void>;
+    exists(roomId: string): Promise<boolean>;
+    setex(key: string, value: string, seconds: number): Promise<unknown>;
+    expire(key: string, seconds: number): Promise<unknown>;
+    get(key: string): Promise<string | null>;
+    set(key: string, val: string): Promise<unknown>;
+    del(roomId: string): Promise<unknown>;
+    sadd(key: string, value: any): Promise<unknown>;
+    smembers(key: string): Promise<string[]>;
+    sismember(key: string, field: string): Promise<number>;
+    srem(key: string, value: any): Promise<unknown>;
+    scard(key: string): Promise<unknown>;
+    srandmember(key: string): Promise<unknown>;
+    sinter(...keys: string[]): Promise<string[]>;
+    zadd(key: string, value: any, member: string): Promise<unknown>;
+    zincrby(key: string, value: any, member: string): Promise<unknown>;
+    zrangebyscore(key: string, min: number, max: number): Promise<unknown>;
+    zcard(key: string): Promise<unknown>;
+    zcount(key: string, min: number, max: number): Promise<unknown>;
+    zrevrank(key: string, member: string): Promise<unknown>;
+    zscore(key: string, member: string): Promise<unknown>;
+    zrevrange(key: string, start: number, end: number): Promise<string[]>;
+    hset(key: string, field: string, value: string): Promise<unknown>;
+    hincrby(key: string, field: string, value: number): Promise<unknown>;
+    hget(key: string, field: string): Promise<any>;
+    hgetall(key: string): Promise<{
+        [key: string]: string;
+    }>;
+    hdel(key: string, field: string): Promise<unknown>;
+    hlen(key: string): Promise<number>;
+    incr(key: string): Promise<number>;
+    decr(key: string): Promise<number>;
+    protected handleSubscription: (channel: string, message: string) => void;
+}
+
+export { SINGLETON_KEY, type Singleton, ZRedisClient, singleton };

dist/index.d.ts

@@ -1,6 +1,7 @@
 export { ZError } from './common/ZError.js';
 export { SyncLocker } from './common/SyncLocker.js';
 export { AsyncQueue, createAsyncQueue, createAsyncQueues } from './common/AsyncQueue.js';
+import { RedisClient, ClientOpts } from 'redis';
 
 /**
  * 单例化一个class
@@ -18,4 +19,59 @@ type Singleton<T extends new (...args: any[]) => any> = T & {
 };
 declare const singleton: <T extends new (...args: any[]) => any>(classTarget: T) => T;
 
-export { SINGLETON_KEY, type Singleton, singleton };
+type Callback = (...args: any[]) => void;
+declare class ZRedisClient {
+    pub: RedisClient;
+    sub: RedisClient;
+    protected subscribeAsync: any;
+    protected unsubscribeAsync: any;
+    protected publishAsync: any;
+    protected subscriptions: {
+        [channel: string]: Callback[];
+    };
+    protected smembersAsync: any;
+    protected sismemberAsync: any;
+    protected hgetAsync: any;
+    protected hlenAsync: any;
+    protected pubsubAsync: any;
+    protected incrAsync: any;
+    protected decrAsync: any;
+    constructor(opts?: ClientOpts);
+    subscribe(topic: string, callback: Callback): Promise<this>;
+    unsubscribe(topic: string, callback?: Callback): Promise<this>;
+    publish(topic: string, data: any): Promise<void>;
+    exists(roomId: string): Promise<boolean>;
+    setex(key: string, value: string, seconds: number): Promise<unknown>;
+    expire(key: string, seconds: number): Promise<unknown>;
+    get(key: string): Promise<string | null>;
+    set(key: string, val: string): Promise<unknown>;
+    del(roomId: string): Promise<unknown>;
+    sadd(key: string, value: any): Promise<unknown>;
+    smembers(key: string): Promise<string[]>;
+    sismember(key: string, field: string): Promise<number>;
+    srem(key: string, value: any): Promise<unknown>;
+    scard(key: string): Promise<unknown>;
+    srandmember(key: string): Promise<unknown>;
+    sinter(...keys: string[]): Promise<string[]>;
+    zadd(key: string, value: any, member: string): Promise<unknown>;
+    zincrby(key: string, value: any, member: string): Promise<unknown>;
+    zrangebyscore(key: string, min: number, max: number): Promise<unknown>;
+    zcard(key: string): Promise<unknown>;
+    zcount(key: string, min: number, max: number): Promise<unknown>;
+    zrevrank(key: string, member: string): Promise<unknown>;
+    zscore(key: string, member: string): Promise<unknown>;
+    zrevrange(key: string, start: number, end: number): Promise<string[]>;
+    hset(key: string, field: string, value: string): Promise<unknown>;
+    hincrby(key: string, field: string, value: number): Promise<unknown>;
+    hget(key: string, field: string): Promise<any>;
+    hgetall(key: string): Promise<{
+        [key: string]: string;
+    }>;
+    hdel(key: string, field: string): Promise<unknown>;
+    hlen(key: string): Promise<number>;
+    incr(key: string): Promise<number>;
+    decr(key: string): Promise<number>;
+    protected handleSubscription: (channel: string, message: string) => void;
+}
+
+export { SINGLETON_KEY, type Singleton, ZRedisClient, singleton };

dist/index.js

@@ -132,10 +132,261 @@ var DeferredPromise = class {
     });
   }
 };
+
+// src/redis/ZRedisClient.ts
+import { createClient } from "redis";
+import { promisify } from "util";
+var ZRedisClient = class {
+  constructor(opts) {
+    this.subscriptions = {};
+    this.handleSubscription = (channel, message) => {
+      if (this.subscriptions[channel]) {
+        for (let i = 0, l = this.subscriptions[channel].length; i < l; i++) {
+          this.subscriptions[channel][i](JSON.parse(message));
+        }
+      }
+    };
+    this.sub = createClient(opts);
+    this.pub = createClient(opts);
+    this.sub.setMaxListeners(0);
+    this.subscribeAsync = promisify(this.sub.subscribe).bind(this.sub);
+    this.unsubscribeAsync = promisify(this.sub.unsubscribe).bind(this.sub);
+    this.publishAsync = promisify(this.pub.publish).bind(this.pub);
+    this.smembersAsync = promisify(this.pub.smembers).bind(this.pub);
+    this.sismemberAsync = promisify(this.pub.sismember).bind(this.pub);
+    this.hlenAsync = promisify(this.pub.hlen).bind(this.pub);
+    this.hgetAsync = promisify(this.pub.hget).bind(this.pub);
+    this.pubsubAsync = promisify(this.pub.pubsub).bind(this.pub);
+    this.decrAsync = promisify(this.pub.decr).bind(this.pub);
+    this.incrAsync = promisify(this.pub.incr).bind(this.pub);
+  }
+  async subscribe(topic, callback) {
+    if (!this.subscriptions[topic]) {
+      this.subscriptions[topic] = [];
+    }
+    this.subscriptions[topic].push(callback);
+    if (this.sub.listeners("message").length === 0) {
+      this.sub.addListener("message", this.handleSubscription);
+    }
+    await this.subscribeAsync(topic);
+    return this;
+  }
+  async unsubscribe(topic, callback) {
+    if (callback) {
+      const index = this.subscriptions[topic].indexOf(callback);
+      this.subscriptions[topic].splice(index, 1);
+    } else {
+      this.subscriptions[topic] = [];
+    }
+    if (this.subscriptions[topic].length === 0) {
+      await this.unsubscribeAsync(topic);
+    }
+    return this;
+  }
+  async publish(topic, data) {
+    if (data === void 0) {
+      data = false;
+    }
+    await this.publishAsync(topic, JSON.stringify(data));
+  }
+  async exists(roomId) {
+    return (await this.pubsubAsync("channels", roomId)).length > 0;
+  }
+  async setex(key, value, seconds) {
+    return new Promise((resolve) => this.pub.setex(key, seconds, value, resolve));
+  }
+  async expire(key, seconds) {
+    return new Promise((resolve) => this.pub.expire(key, seconds, resolve));
+  }
+  async get(key) {
+    return new Promise((resolve, reject) => {
+      this.pub.get(key, (err, data) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(data);
+      });
+    });
+  }
+  async set(key, val) {
+    return new Promise((resolve) => {
+      this.pub.set(key, val, () => {
+        resolve && resolve("");
+      });
+    });
+  }
+  async del(roomId) {
+    return new Promise((resolve) => {
+      this.pub.del(roomId, resolve);
+    });
+  }
+  async sadd(key, value) {
+    return new Promise((resolve) => {
+      this.pub.sadd(key, value, resolve);
+    });
+  }
+  async smembers(key) {
+    return await this.smembersAsync(key);
+  }
+  async sismember(key, field) {
+    return await this.sismemberAsync(key, field);
+  }
+  async srem(key, value) {
+    return new Promise((resolve) => {
+      this.pub.srem(key, value, resolve);
+    });
+  }
+  async scard(key) {
+    return new Promise((resolve, reject) => {
+      this.pub.scard(key, (err, data) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(data);
+      });
+    });
+  }
+  async srandmember(key) {
+    return new Promise((resolve, reject) => {
+      this.pub.srandmember(key, (err, data) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(data);
+      });
+    });
+  }
+  async sinter(...keys) {
+    return new Promise((resolve, reject) => {
+      this.pub.sinter(...keys, (err, data) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(data);
+      });
+    });
+  }
+  async zadd(key, value, member) {
+    return new Promise((resolve) => {
+      this.pub.zadd(key, value, member, resolve);
+    });
+  }
+  async zincrby(key, value, member) {
+    return new Promise((resolve) => {
+      this.pub.zincrby(key, value, member, resolve);
+    });
+  }
+  async zrangebyscore(key, min, max) {
+    return new Promise((resolve, reject) => {
+      this.pub.zrangebyscore(key, min, max, "withscores", (err, data) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(data);
+      });
+    });
+  }
+  async zcard(key) {
+    return new Promise((resolve, reject) => {
+      this.pub.zcard(key, (err, data) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(data);
+      });
+    });
+  }
+  async zcount(key, min, max) {
+    return new Promise((resolve, reject) => {
+      this.pub.zcount(key, min, max, (err, data) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(data);
+      });
+    });
+  }
+  async zrevrank(key, member) {
+    return new Promise((resolve, reject) => {
+      this.pub.zrevrank(key, member, (err, data) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(data);
+      });
+    });
+  }
+  async zscore(key, member) {
+    return new Promise((resolve, reject) => {
+      this.pub.zscore(key, member, (err, data) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(data);
+      });
+    });
+  }
+  async zrevrange(key, start, end) {
+    return new Promise((resolve, reject) => {
+      this.pub.zrevrange(key, start, end, "withscores", (err, data) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(data);
+      });
+    });
+  }
+  async hset(key, field, value) {
+    return new Promise((resolve) => {
+      this.pub.hset(key, field, value, resolve);
+    });
+  }
+  async hincrby(key, field, value) {
+    return new Promise((resolve) => {
+      this.pub.hincrby(key, field, value, resolve);
+    });
+  }
+  async hget(key, field) {
+    return await this.hgetAsync(key, field);
+  }
+  async hgetall(key) {
+    return new Promise((resolve, reject) => {
+      this.pub.hgetall(key, (err, values) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(values);
+      });
+    });
+  }
+  async hdel(key, field) {
+    return new Promise((resolve, reject) => {
+      this.pub.hdel(key, field, (err, ok) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(ok);
+      });
+    });
+  }
+  async hlen(key) {
+    return await this.hlenAsync(key);
+  }
+  async incr(key) {
+    return await this.incrAsync(key);
+  }
+  async decr(key) {
+    return await this.decrAsync(key);
+  }
+};
+ZRedisClient = __decorateClass([
+  singleton
+], ZRedisClient);
 export {
   SINGLETON_KEY,
   SyncLocker,
   ZError,
+  ZRedisClient,
   createAsyncQueue,
   createAsyncQueues,
   singleton

package.json

@@ -17,7 +17,9 @@
   },
   "typesVersions": {
     "*": {
-      "utils/*": ["dist/utils/*.d.ts"]
+      "utils/*": [
+        "dist/utils/*.d.ts"
+      ]
     }
   },
   "type": "module",
@@ -31,9 +33,11 @@
     "@metamask/eth-sig-util": "^4.0.1",
     "crypto-js": "^4.2.0",
     "ethereumjs-util": "^7.1.5",
+    "redis": "^3.1.2",
     "web3": "^1.7.4"
   },
   "devDependencies": {
+    "@types/redis": "^2.8.28",
     "ts-node": "^10.9.2",
     "tsup": "^8.0.1",
     "typescript": "^5.3.3"

src/index.ts

@@ -2,3 +2,4 @@ export { ZError } from './common/ZError'
 export { SyncLocker } from './common/SyncLocker'
 export * from './decorators/singleton'
 export * from './common/AsyncQueue'
+export { ZRedisClient } from './redis/ZRedisClient'

src/redis/ZRedisClient.ts

@@ -0,0 +1,313 @@
+import { singleton } from 'decorators/singleton'
+import { ClientOpts, RedisClient, createClient } from 'redis'
+import { promisify } from 'util'
+
+
+type Callback = (...args: any[]) => void
+
+@singleton
+export class ZRedisClient {
+  public pub: RedisClient
+  public sub: RedisClient
+
+  protected subscribeAsync: any
+  protected unsubscribeAsync: any
+  protected publishAsync: any
+
+  protected subscriptions: { [channel: string]: Callback[] } = {}
+
+  protected smembersAsync: any
+  protected sismemberAsync: any
+  protected hgetAsync: any
+  protected hlenAsync: any
+  protected pubsubAsync: any
+  protected incrAsync: any
+  protected decrAsync: any
+
+  constructor(opts?: ClientOpts) {
+    this.sub = createClient(opts)
+    this.pub = createClient(opts)
+
+    // no listener limit
+    this.sub.setMaxListeners(0)
+
+    // create promisified pub/sub methods.
+    this.subscribeAsync = promisify(this.sub.subscribe).bind(this.sub)
+    this.unsubscribeAsync = promisify(this.sub.unsubscribe).bind(this.sub)
+
+    this.publishAsync = promisify(this.pub.publish).bind(this.pub)
+
+    // create promisified redis methods.
+    this.smembersAsync = promisify(this.pub.smembers).bind(this.pub)
+    this.sismemberAsync = promisify(this.pub.sismember).bind(this.pub)
+    this.hlenAsync = promisify(this.pub.hlen).bind(this.pub)
+    this.hgetAsync = promisify(this.pub.hget).bind(this.pub)
+    this.pubsubAsync = promisify(this.pub.pubsub).bind(this.pub)
+    this.decrAsync = promisify(this.pub.decr).bind(this.pub)
+    this.incrAsync = promisify(this.pub.incr).bind(this.pub)
+  }
+
+  public async subscribe(topic: string, callback: Callback) {
+    if (!this.subscriptions[topic]) {
+      this.subscriptions[topic] = []
+    }
+
+    this.subscriptions[topic].push(callback)
+
+    if (this.sub.listeners('message').length === 0) {
+      this.sub.addListener('message', this.handleSubscription)
+    }
+
+    await this.subscribeAsync(topic)
+
+    return this
+  }
+
+  public async unsubscribe(topic: string, callback?: Callback) {
+    if (callback) {
+      const index = this.subscriptions[topic].indexOf(callback)
+      this.subscriptions[topic].splice(index, 1)
+    } else {
+      this.subscriptions[topic] = []
+    }
+
+    if (this.subscriptions[topic].length === 0) {
+      await this.unsubscribeAsync(topic)
+    }
+
+    return this
+  }
+
+  public async publish(topic: string, data: any) {
+    if (data === undefined) {
+      data = false
+    }
+
+    await this.publishAsync(topic, JSON.stringify(data))
+  }
+
+  public async exists(roomId: string): Promise<boolean> {
+    return (await this.pubsubAsync('channels', roomId)).length > 0
+  }
+
+  public async setex(key: string, value: string, seconds: number) {
+    return new Promise(resolve => this.pub.setex(key, seconds, value, resolve))
+  }
+
+  public async expire(key: string, seconds: number) {
+    return new Promise(resolve => this.pub.expire(key, seconds, resolve))
+  }
+
+  public async get(key: string): Promise<string | null> {
+    return new Promise((resolve, reject) => {
+      this.pub.get(key, (err, data: string | null) => {
+        if (err) {
+          return reject(err)
+        }
+        resolve(data)
+      })
+    })
+  }
+
+  public async set(key: string, val: string) {
+    return new Promise(resolve => {
+      this.pub.set(key, val, () => {
+        resolve && resolve('')
+      })
+    })
+  }
+
+  public async del(roomId: string) {
+    return new Promise(resolve => {
+      this.pub.del(roomId, resolve)
+    })
+  }
+
+  public async sadd(key: string, value: any) {
+    return new Promise(resolve => {
+      this.pub.sadd(key, value, resolve)
+    })
+  }
+
+  public async smembers(key: string): Promise<string[]> {
+    return await this.smembersAsync(key)
+  }
+
+  public async sismember(key: string, field: string): Promise<number> {
+    return await this.sismemberAsync(key, field)
+  }
+
+  public async srem(key: string, value: any) {
+    return new Promise(resolve => {
+      this.pub.srem(key, value, resolve)
+    })
+  }
+
+  public async scard(key: string) {
+    return new Promise((resolve, reject) => {
+      this.pub.scard(key, (err, data) => {
+        if (err) {
+          return reject(err)
+        }
+        resolve(data)
+      })
+    })
+  }
+  public async srandmember(key: string) {
+    return new Promise((resolve, reject) => {
+      this.pub.srandmember(key, (err, data) => {
+        if (err) {
+          return reject(err)
+        }
+        resolve(data)
+      })
+    })
+  }
+
+  public async sinter(...keys: string[]) {
+    return new Promise<string[]>((resolve, reject) => {
+      this.pub.sinter(...keys, (err, data) => {
+        if (err) {
+          return reject(err)
+        }
+        resolve(data)
+      })
+    })
+  }
+
+  public async zadd(key: string, value: any, member: string) {
+    return new Promise(resolve => {
+      this.pub.zadd(key, value, member, resolve)
+    })
+  }
+
+  public async zincrby(key: string, value: any, member: string) {
+    return new Promise(resolve => {
+      this.pub.zincrby(key, value, member, resolve)
+    })
+  }
+
+  public async zrangebyscore(key: string, min: number, max: number) {
+    return new Promise((resolve, reject) => {
+      this.pub.zrangebyscore(key, min, max, 'withscores', (err, data) => {
+        if (err) {
+          return reject(err)
+        }
+        resolve(data)
+      })
+    })
+  }
+
+  public async zcard(key: string) {
+    return new Promise((resolve, reject) => {
+      this.pub.zcard(key, (err, data) => {
+        if (err) {
+          return reject(err)
+        }
+        resolve(data)
+      })
+    })
+  }
+
+  public async zcount(key: string, min: number, max: number) {
+    return new Promise((resolve, reject) => {
+      this.pub.zcount(key, min, max, (err, data) => {
+        if (err) {
+          return reject(err)
+        }
+        resolve(data)
+      })
+    })
+  }
+
+  public async zrevrank(key: string, member: string) {
+    return new Promise((resolve, reject) => {
+      this.pub.zrevrank(key, member, (err, data) => {
+        if (err) {
+          return reject(err)
+        }
+        resolve(data)
+      })
+    })
+  }
+
+  public async zscore(key: string, member: string) {
+    return new Promise((resolve, reject) => {
+      this.pub.zscore(key, member, (err, data) => {
+        if (err) {
+          return reject(err)
+        }
+        resolve(data)
+      })
+    })
+  }
+
+  public async zrevrange(key: string, start: number, end: number): Promise<string[]> {
+    return new Promise((resolve, reject) => {
+      this.pub.zrevrange(key, start, end, 'withscores', (err, data) => {
+        if (err) {
+          return reject(err)
+        }
+        resolve(data)
+      })
+    })
+  }
+
+  public async hset(key: string, field: string, value: string) {
+    return new Promise(resolve => {
+      this.pub.hset(key, field, value, resolve)
+    })
+  }
+
+  public async hincrby(key: string, field: string, value: number) {
+    return new Promise(resolve => {
+      this.pub.hincrby(key, field, value, resolve)
+    })
+  }
+
+  public async hget(key: string, field: string) {
+    return await this.hgetAsync(key, field)
+  }
+
+  public async hgetall(key: string) {
+    return new Promise<{ [key: string]: string }>((resolve, reject) => {
+      this.pub.hgetall(key, (err, values) => {
+        if (err) {
+          return reject(err)
+        }
+        resolve(values)
+      })
+    })
+  }
+
+  public async hdel(key: string, field: string) {
+    return new Promise((resolve, reject) => {
+      this.pub.hdel(key, field, (err, ok) => {
+        if (err) {
+          return reject(err)
+        }
+        resolve(ok)
+      })
+    })
+  }
+
+  public async hlen(key: string): Promise<number> {
+    return await this.hlenAsync(key)
+  }
+
+  public async incr(key: string): Promise<number> {
+    return await this.incrAsync(key)
+  }
+
+  public async decr(key: string): Promise<number> {
+    return await this.decrAsync(key)
+  }
+
+  protected handleSubscription = (channel: string, message: string) => {
+    if (this.subscriptions[channel]) {
+      for (let i = 0, l = this.subscriptions[channel].length; i < l; i++) {
+        this.subscriptions[channel][i](JSON.parse(message))
+      }
+    }
+  }
+}

yarn.lock

@@ -623,6 +623,13 @@
   dependencies:
     "@types/node" "*"
 
+"@types/redis@^2.8.28":
+  version "2.8.32"
+  resolved "https://registry.yarnpkg.com/@types/redis/-/redis-2.8.32.tgz#1d3430219afbee10f8cfa389dad2571a05ecfb11"
+  integrity sha512-7jkMKxcGq9p242exlbsVzuJb57KqHRhNl4dHoQu2Y5v9bCAbtIXXH0R3HleSQW4CTOqpHIYUW3t6tpUj4BVQ+w==
+  dependencies:
+    "@types/node" "*"
+
 "@types/responselike@^1.0.0":
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/@types/responselike/-/responselike-1.0.3.tgz#cc29706f0a397cfe6df89debfe4bf5cea159db50"
@@ -1218,6 +1225,11 @@ delayed-stream@~1.0.0:
   resolved "https://registry.yarnpkg.com/delayed-stream/-/delayed-stream-1.0.0.tgz#df3ae199acadfb7d440aaae0b29e2272b24ec619"
   integrity sha512-ZySD7Nf91aLB0RxL4KGrKHBXl7Eds1DAmEdcoVawXnLD7SDhpNgtuII2aAkg7a7QS41jxPSZ17p4VdGnMHk3MQ==
 
+denque@^1.5.0:
+  version "1.5.1"
+  resolved "https://registry.yarnpkg.com/denque/-/denque-1.5.1.tgz#07f670e29c9a78f8faecb2566a1e2c11929c5cbf"
+  integrity sha512-XwE+iZ4D6ZUB7mfYRMb5wByE8L74HCn30FBN7sWnXksWc1LO1bPDl67pBR9o/kC4z/xSNAwkMYcGgqDV3BE3Hw==
+
 depd@2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/depd/-/depd-2.0.0.tgz#b696163cc757560d09cf22cc8fad1571b79e76df"
@@ -2674,6 +2686,33 @@ readdirp@~3.6.0:
   dependencies:
     picomatch "^2.2.1"
 
+redis-commands@^1.7.0:
+  version "1.7.0"
+  resolved "https://registry.yarnpkg.com/redis-commands/-/redis-commands-1.7.0.tgz#15a6fea2d58281e27b1cd1acfb4b293e278c3a89"
+  integrity sha512-nJWqw3bTFy21hX/CPKHth6sfhZbdiHP6bTawSgQBlKOVRG7EZkfHbbHwQJnrE4vsQf0CMNE+3gJ4Fmm16vdVlQ==
+
+redis-errors@^1.0.0, redis-errors@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/redis-errors/-/redis-errors-1.2.0.tgz#eb62d2adb15e4eaf4610c04afe1529384250abad"
+  integrity sha512-1qny3OExCf0UvUV/5wpYKf2YwPcOqXzkwKKSmKHiE6ZMQs5heeE/c8eXK+PNllPvmjgAbfnsbpkGZWy8cBpn9w==
+
+redis-parser@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/redis-parser/-/redis-parser-3.0.0.tgz#b66d828cdcafe6b4b8a428a7def4c6bcac31c8b4"
+  integrity sha512-DJnGAeenTdpMEH6uAJRK/uiyEIH9WVsUmoLwzudwGJUwZPp80PDBWPHXSAGNPwNvIXAbe7MSUB1zQFugFml66A==
+  dependencies:
+    redis-errors "^1.0.0"
+
+redis@^3.1.2:
+  version "3.1.2"
+  resolved "https://registry.yarnpkg.com/redis/-/redis-3.1.2.tgz#766851117e80653d23e0ed536254677ab647638c"
+  integrity sha512-grn5KoZLr/qrRQVwoSkmzdbw6pwF+/rwODtrOr6vuBRiR/f3rjSTGupbF90Zpqm2oenix8Do6RV7pYEkGwlKkw==
+  dependencies:
+    denque "^1.5.0"
+    redis-commands "^1.7.0"
+    redis-errors "^1.2.0"
+    redis-parser "^3.0.0"
+
 request@^2.79.0:
   version "2.88.2"
   resolved "https://registry.yarnpkg.com/request/-/request-2.88.2.tgz#d73c918731cb5a87da047e207234146f664d12b3"