tool to compare two JBoss BRMS/Drools rules executions with different two versions of rules with same data.

With JBoss BRMS/Drools, After start modification of existing rules or tuning rules,
you would have questions such as ...

• How much different the execution speed ?
• Are there differences of the result facts ?
• Are there differences of the execution count of each rules ?
• Are there differences of the execution sequence of rules ?
• Are there differences of the activations count created/canceled/executed in the rule engine ?

This is a tool to answer above questions.
The tool executes the two versions of the rules with the same data then generates a HTML report.
The report can be integrated into the Testing or Simulation Pipleline with the HTML report plugin of Jenkins.

After warm up and execution of two version of rules, you will get a HTML report like below.

This is the part of the Activation differences. By some tuning of rules, most of the useless activations were removed. In the Activation part, you can see ...

• How many activations created of each rules.
• Which rule were executed prior such activation creation.
• How many such activation executed/canceled.
• Which rule were executed prior such activation execution/cancellation.

    DefaultRuleSimulator ruleSimulator = new DefaultRuleSimulator();
    ruleSimulator.setBaseRules(kieContainer.getKieBase("rules"));
    ruleSimulator.setWorkingRules(kieContainer.getKieBase("workingRules"));
    ruleSimulator.setWarmupSeconds(30);
    ruleSimulator.setReportDir(reportBaseDir);
    ruleSimulator.executeAllStats(commandsFactory);

After warm up and execution of two verson of rules, report.html will be generated in the reportBaseDir path.

Check the CommandsFactory interface and its test sample code in the RuleSimulatorTest.

Apache License Version 2.0

okuniyas