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基于Flink的关键字过滤预警系统

该项目用于监控日志数据流,管理警报规则,警报阈值和频率,配置成功实时生效。 实现基于Apache Flink,Spring Boot,Alibaba Nacos,MySQL和JQuery。


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Important:

目前只是最最基本刚刚可以跑起来的版本,还有很多设计不合理要改进的地方,开源是为了分享做项目使用Flink的一些思路,个人认为有几点较为值得参考,本人实测可用:

  • 自定义的HttpSink、作为Socket服务端接收数据 :ServerSockSource

  • Alibaba Nacos可以给算子绑定事件监听,实时改变算子规则(原理是长连接和java的事件机制)

  • Flink集群中一个Job执行实时Map操作把结果Socket发给另一个Job使用时间窗口聚合

    Important:本项目有几个大坑:

  • 使用MySQL:因为探索阶段使用Spring+JPA的组合构建后端,但引入Nacos后,MySQL显得鸡肋完全可以用Nacos替代

  • 关于前端:前端JS代码极度反人类,使用jQuery从数据构建页面,是因为此项目必须作为Grafana插件设计所以前端技术受限.目前无法把Grafana一并上传,前端代码脱离Grafana可以直接运行,我己经手动修改为纯html版本配置好spring和mysql即可打开


设计思路

整体流程:

图片

各个模块UML图:

Spring Boot RESTful API Service 图片

Flink集群 图片

SpringBoot报警模块

图片

Grafana下前端配置主界面:

图片


关于运行:

Important:因为是个人实习项目,用了很多技术栈,Fork直接跑的话不是很方便,建议仅参考思路 水平有限,还有很多设计不合理要改进的地方 记录下本项目运行所需要的配置: 运行需要在Spring Boot配置MySQL连接字符串

MySQL SQL

CREATE TABLE `jobs` (
  `jobid` int(11) NOT NULL AUTO_INCREMENT,
  `jobname` varchar(32) DEFAULT NULL,
  `rules` text NOT NULL,
  `hostname` varchar(32) DEFAULT NULL,
  `port` varchar(32) DEFAULT NULL,
  `is_zip` varchar(11) DEFAULT NULL,
  PRIMARY KEY (`jobid`)
) ENGINE=InnoDB AUTO_INCREMENT=1005 DEFAULT CHARSET=utf8;

CREATE TABLE `rules` (
  `RuleID` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `Content` text,
  PRIMARY KEY (`RuleID`)
) ENGINE=InnoDB AUTO_INCREMENT=97 DEFAULT CHARSET=utf8;;

Nacos配置

Data ID:FlinkJob.1001.properties
Group:BaseService
Configuration Content:
{"id":1001,"name":"缓存(Memcached)(9 panels)","isZip":"-1","keys":["Succeed","SNNN"],"hostname":"127.0.0.1","port":9000}
Data ID:Flink.AlarmRuleHashMap
Group:BaseService
Configuration Content:
{"1001Succeed":{"jobid":1001,"counts":15,"timewindow":5,"rulecontent":"Succeed","ruleid":91},"1001SNNN":{"counts":15,"jobid":1001,"rulecontent":"SNNN","ruleid":96,"timewindow":5}}

运行参数

Flink Counter: 计数任务开启的端口 + Spring服务的URL 例子:

9001 http://127.0.0.1:8080

Flink Filter: Nacos的URL+ 任务的ID+ SocketSink的地址+SocketSink的端口

127.0.0.1:8848 1001 127.0.0.1 9001

Spring Boot:

$java -jar flink.config-1.0-SNAPSHOT.jar --server.port=8080

最后

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交流技♂术可以加我的QQ:491929461

本人应届秋招,有内推的爸爸们捞我一把,谢谢惹

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