io-syncify/src/RedisInputMessageReceiver.ts

跨进程、跨服务器之间通信同步化

import * as IORedis from "ioredis";
import {InputMessageHandler, InputMessageReceiver} from "./InputMessageReceiver";
import {Message} from "./Message";

/**
 * Redis输入消息接收器
 */
export class RedisInputMessageReceiver implements InputMessageReceiver {

    /**
     * 输入消息处理器
     */
    inputMessageHandler: InputMessageHandler;
    /**
     * 输入消息订阅通道
     */
    private readonly input_message_sub_channel: string;
    /**
     * 输入消息订阅客户端
     */
    private input_message_sub_client: IORedis.Redis;

    constructor(input_message_sub_channel: string, options: IORedis.RedisOptions, inputMessageHandler: InputMessageHandler) {
        this.inputMessageHandler = inputMessageHandler;
        this.input_message_sub_channel = input_message_sub_channel;
        this.input_message_sub_client = new IORedis(options);
    }

    /**
     * 接收消息
     */
    receive() {
        this.input_message_sub_client.subscribe(this.input_message_sub_channel).then(()=>{
            this.input_message_sub_client.on('message', (channel, message) => {
                if (channel === this.input_message_sub_channel) {
                    this.inputMessageHandler.handle(Message.fromJsonArrayString(message));
                }
            });
        });
    }
}