feature(alipay): add dingtalk robot alert

+const _ = require('lodash');
+const ddAlert = require('./dingding-alert');
+const MIN_SEND_INTERVAL = 10 * 1000;
+const moment = require('moment');
+
+const AlertManager = {
+  isAtAll: false,
+  pendingAgents: {},
+  post(agent) {
+    if (!this.pendingAgents[agent.name]) {
+      this.pendingAgents[agent.name] = agent;
+    }
+    this.report();
+  },
+  report: _.throttle(() => AlertManager._report(), MIN_SEND_INTERVAL, {leading: true, trailing: true}),
+  _report() {
+    const now = Date.now();
+    let ats = [];
+    let text = [];
+    text.push(`**本次告警**: ${moment(now).format('YYYY-MM-DD HH:mm:ss')}\n`);
+    text.push(`**上次告警**: ${moment(this.lastSendTime).format('YYYY-MM-DD HH:mm:ss')}\n`);
+   
+    text = text.concat(Object.keys(this.pendingAgents).map(agentName => {
+      const agent = this.pendingAgents[agentName];
+      ats = ats.concat(agent.ats);
+      return agent.getMarkdownReport();
+    }));
+
+    ddAlert(text.join('\n'), _.uniq(ats), this.isAtAll);
+    this.lastSendTime = now;
+    this.pendingAgents = {};
+  }
+};
+
+class AlertAgent {
+  constructor(name, subjectMap, ats = [], isAtAll = false) {
+    this.name = name;
+    this.subjectMap = subjectMap;
+    this.ats = ats;
+    if (isAtAll) {
+      AlertManager.isAtAll = true;
+    }
+
+    this.msgs = {};
+  }
+
+  send(subjectId, text = '') {
+    let msg = _.get(this.msgs, subjectId, {text, count: 0});
+    this.msgs[subjectId] = msg;
+    msg.count++;
+    AlertManager.post(this);
+  }
+
+  getMarkdownReport() {
+    let report = [`## ${this.name} `];
+    report.push(this.ats.map(at => `@${at}`).join(' '));
+
+    const msgs = Object.keys(this.msgs).map(id => {
+      const msg = this.msgs[id];
+
+      return `- ${this.subjectMap[id]} ${msg.text} ${msg.count}次`;
+    });
+
+    report = report.concat(msgs);
+
+    return report.join('\n');
+  }
+}
+module.exports = AlertAgent;

+const rp = require('request-promise');
+
+module.exports = (text, atMobiles, isAtAll) => {
+  const data = {
+    msgtype: 'markdown',
+    markdown: {
+      title: 'ufo-app-web',
+      text
+    },
+    at: {
+      atMobiles,
+      isAtAll,
+    }
+  };
+
+  return rp({
+    uri: 'https://oapi.dingtalk.com/robot/send?access_token=499f845e894e0aebb6d29ec9f3b186cbb99bfa89cd4347fa4c0e8efd4081ecd5',
+    method: 'POST',
+    headers: {
+      'Content-Type': 'application/json; charset=utf-8'
+    },
+    body: JSON.stringify(data)
+  });
+};