fast-drools-spring-boot-starter integrates Drools with Springboot providing a more efficient, sophisticated model for rule configuration and management. It is capable of updating rules dynamically with regards to hot deployment.

Feel free to ask me any questions with the contacts below.

• QQ group chat：476067618
• Drools video tutorials：https://space.bilibili.com/564757

• 1）Demo？

  • https://github.com/hongwen1993/all/tree/master/java/drools/boot-drools

• 2）Why I can't dynamically update rules in development environment?

  • In development stage, it is not recommended to use tools such as Intellij IDEA for rule modification. If insisted, Ctrl + F9 or compile manually to apply the changes you make.

• 3）...

• 1）Inject the following dependency in pom.xml（update 2021/01/20）：

  <dependency>
      <groupId>com.github.hongwen1993</groupId>
      <artifactId>fast-drools-spring-boot-starter</artifactId>
      <version>8.0.9</version>
  </dependency>

• 2）Designate path to drools rule file in the configruation file

  # (necessary) specify a rule file folder that will automatically scan all rule files, include  decision tables, and CSV files, 
  # also support classpath resource path, example：classpath:drools/**/*.drl
  # win system use \\, example C:\\DRL\\
  # linux system use /, example /var/config/
  spring.drools.path = C:\\DRL\\
  # set up mode with options "stream" or "cloud" (default = stream)
  spring.drools.mode = stream
  # close drl file auto update, on or off (default = on)
  spring.drools.auto-update = on
  # regulates update cycle, unit is seconds (default = 30)
  spring.drools.update = 10
  # monitoring rules, on or off (default = on)
  spring.drools.listener = on
  # open drl syntax checker, on or off (default = off)
  spring.drools.verify = off
  # default drl file charset（default utf-8）
  spring.drools.charset = GBK

• 3）Introduce KieTemplate with annotation

  @Autowired
  private KieTemplate kieTemplate;

• 4）Session can be acquired with getKieSession(). Supporting multiple rule files at the same time as well as decisions tables.

  KieSession kieSession = kieTemplate.getKieSession("rule1.drl", "rule2.drl");
  ......

• 5）Results

  2020-09-10 16:51:08.344 DEBUG ===>>开始更新规则文件
  2020-09-10 16:51:09.730 DEBUG ===>>插入对象：[fact 0:1:1571707504:1072693248:1:DEFAULT:NON_TRAIT:java.lang.Double:1.0]；操作规则：null
  2020-09-10 16:51:09.748 DEBUG ===>>匹配的规则：[Rule name=规则1-1, agendaGroup=MAIN, salience=0, no-loop=false]
  2020-09-10 16:51:09.761 DEBUG ===>>开始执行Java代码块，匹配规则：[Rule name=规则1-1, agendaGroup=MAIN, salience=0, no-loop=false]，评估对象：[[fact 0:1:1571707504:1072693248:1:DEFAULT:NON_TRAIT:java.lang.Double:1.0]]
  .... 执行过程忽略 ....
  2020-09-10 16:51:09.765 DEBUG ===>>结束执行Java代码块，匹配规则：[Rule name=规则1-1, agendaGroup=MAIN, salience=0, no-loop=false]，评估对象：[[fact 0:1:1571707504:1072693248:1:DEFAULT:NON_TRAIT:java.lang.Double:1.0]]

（KieTemplate 下封装了许多 Drools 的功能，许多便捷的 API 等你来发现！）

• Quick start with Drools-Springboot integration without having to go through the complex configuration process in kmodule.xml
• Specify filenames to perform evaluation rules for more intuitive process analysis.
• Dynamically loads the rules file
• Group rule file
• NIO file mapping for faster file reads and writes
• Use caching to improve rule evaluation
• Support for various path formats
• Supports rule table files in XLS and XLSX formats
• Logging monitors the dynamics of rules and evaluation objects in the process
• Extreme execution speed and performance, and customizable

• Rule execution monitoring
• Distributed based assessment and decision making
• Rule execution success failure rate statistics
• GUI control for rule files
• GUI control for decision tables
• Storage of distributed rule files

Apache 2.0

If you are using fast-drools and think that it helps you or want do some contributions to it, please call me to let us know just for promotional purposes only.