'use strict';

const Service = require('egg').Service;

class RabbitmqService extends Service {

  constructor(ctx) {
    super(ctx);
    this.exType = 'topic';
    this.durable = true;
  }

  // 接收消息
  async receiveQueueMsg(ex) {
    console.log(ex);
    this.ctx.logger.info('调用mq的' + ex);
    const self = this;
    const { mq } = self.ctx;
    if (mq) {
      const ch = await mq.conn.createChannel();
      await ch.assertExchange(ex, 'topic', { durable: true });
      const q = await ch.assertQueue('', { exclusive: true });
      await ch.bindQueue(q.queue, ex, '*');
      await ch.consume(q.queue, msg => this.logMessage(msg, this), { autoAck: true });
    } else {
      this.ctx.logger.error('!!!!!!没有配置MQ插件!!!!!!');
    }
  }

  async logMessage(msg) {

    const result = msg.content.toString();
    console.log(result);

  }

}

module.exports = RabbitmqService;