基于企业微信机器人实现预警功能

效果如图：

1. 首先创建企业微信机器人
   
   接下来会如下所示获取到消息推送url
   
   2.基于ES查询获取库中信息进行预警：

package com.adgn.timer.timer;

import com.adgn.timer.config.Config;
import com.adgn.timer.domain.EarlyWarningVo;
import com.adgn.timer.utils.httputils.HttpUtils;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import org.apache.commons.lang3.StringUtils;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.index.query.BoolQueryBuilder;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.index.query.RangeQueryBuilder;
import org.elasticsearch.search.aggregations.AbstractAggregationBuilder;
import org.elasticsearch.search.aggregations.Aggregation;
import org.elasticsearch.search.aggregations.AggregationBuilders;
import org.elasticsearch.search.aggregations.bucket.terms.IncludeExclude;
import org.elasticsearch.search.aggregations.bucket.terms.ParsedStringTerms;
import org.elasticsearch.search.aggregations.bucket.terms.TermsAggregationBuilder;
import org.elasticsearch.search.builder.SearchSourceBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.stereotype.Component;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

/**
 * @Author sannian
 * @Date 2022/1/5 10:51
 * @Version 1.0
 */
@Component
@EnableScheduling
public class EarlyWarningScheduledReady {
    public final static Logger logger = LoggerFactory.getLogger(EarlyWarningScheduledReady.class);

    @Autowired
    public RestHighLevelClient restHighLevelClient;
   @Scheduled(cron = "0 0 0/6 * * ?")
   @Async("threadPoolTaskExecutor")
    public void init(){
        try {
            logger.info("预警定时器启动");
//            String url = "http://192.168.3.212:9999//v1/getInfoSource";
            String resp = HttpUtils.get(url);
            if (StringUtils.isBlank(resp)) {
                logger.error("[domain cache] resp is empty ! url -> {}, resp -> {}", url, resp);
            }
            JSONArray result = JSON.parseArray(resp);
            List arrayList = result.toJavaList(EarlyWarningVo.class);
            getData(arrayList);
        }catch (Exception e){
            logger.error(e.getMessage());
        }
    }

    private void getData(List crawlerSiteIds) throws IOException {
        int size = crawlerSiteIds.size();
        if (size == 0) {
            return;
        }
        if (size>=500){
            List smallCrawlerSiteIds = new ArrayList<>();
            crawlerSiteIds.forEach(x->{
                smallCrawlerSiteIds.add(x);
                if (smallCrawlerSiteIds.size()>=500){
                    try {
                        queryES(smallCrawlerSiteIds, size);
                        smallCrawlerSiteIds.clear();
                    } catch (IOException e) {
                        logger.error(e.getMessage());
                    }
                }
            });
            queryES(smallCrawlerSiteIds, size);
        }else{
            queryES(crawlerSiteIds, size);
        }
    }

    private void queryES(List crawlerSiteIds, int size) throws IOException {
        //查询体构造
        SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
      
        //时间范围
        RangeQueryBuilder rangeQueryBuilder = getRangeQueryBuilder();
        boolQueryBuilder.must(rangeQueryBuilder);
        String[] crawlerSiteIdString = crawlerSiteIdList.toArray(new String[crawlerSiteIdList.size()]);
        //请求体构建
        SearchRequest searchRequest = new SearchRequest(Config.get(Config.INDEX_NAME) + "-all");
        searchRequest.source(searchSourceBuilder);
        logger.info("query sql->{}", searchSourceBuilder.toString());
        SearchResponse searchResponse = restHighLevelClient.search(searchRequest, RequestOptions.DEFAULT);
        Map aggMap = searchResponse.getAggregations().asMap();
        List returnList = new ArrayList<>();
        ParsedStringTerms teamAgg = (ParsedStringTerms) aggMap.get("idGroup");
        Iterator teamBucketIt =
                (Iterator) teamAgg.getBuckets().iterator();
        List nullList = new ArrayList<>();
        while (teamBucketIt.hasNext()) {
            ParsedStringTerms.ParsedBucket buck = teamBucketIt.next();
            //id
            String team = (String) buck.getKey();
            returnList.add(team);
        }
        crawlerSiteIds.forEach(x ->{
            if (!returnList.contains(x.getId())){
                nullList.add(x);
            }
        });
        if (nullList.size() > 0) {
            sendWaring(nullList);
        }
    }

    private RangeQueryBuilder getRangeQueryBuilder() {
        Date date = new Date();
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        String endTime = simpleDateFormat.format(date);
        calendar.add(Calendar.HOUR_OF_DAY, -6);
        String startTime = simpleDateFormat.format(calendar.getTimeInMillis());
        return new RangeQueryBuilder("created_at")
                .from(startTime)
                .to(endTime)
                .includeUpper(true)
                .includeLower(true)
                .format("yyyy-MM-dd HH:mm:ss");
    }
    private void sendWaring(List jsonObjectList) {
        HttpUtils.post(jsonObjectList);
    }
}

 public static void post(List<EarlyWarningVo> crawlerSiteIdList) {
        // 设置连接超时时间
        OkHttpClient client = new OkHttpClient.Builder().connectTimeout(10, TimeUnit.SECONDS)
                // 设置读取超时时间
                .readTimeout(20, TimeUnit.SECONDS)
                .build();
        String url = "自己的url";
        Response response = null;
        try {
            String reqBody = "{" +
                    "    \"msgtype\":\"text\"," +
                    "    \"text\":{" +
                    "        \"content\":\"预警测试 !!! 测试ES近6小时入库为0站点:\n" +crawlerSiteIdList.toString()+","+
                    "        \"mentioned_list\":[\"@all\"]" +
                    "       }"+
                    "}";

            MediaType contentType = MediaType.parse("application/json; charset=utf-8");
            RequestBody body = RequestBody.create(contentType, reqBody);
            Request request = new Request.Builder().url(url).post(body).addHeader("cache-control", "no-cache").build();
            response = client.newCall(request).execute();
            byte[] datas = response.body().bytes();
            String respMsg = new String(datas);
            logger.info(respMsg);
        } catch (IOException e) {
            logger.error(e.getMessage());
        } finally {
            response.body().close();
        }
    }

3.如果有需要扩展的可以查看企信机器人使用文档：
https://developer.work.weixin.qq.com/document/path/91770#%E5%A6%82%E4%BD%95%E4%BD%BF%E7%94%A8%E7%BE%A4%E6%9C%BA%E5%99%A8%E4%BA%BA