问题描述
我有一个基于 Drools 的应用程序，它总共有 15-20 个文件。每个文件都有针对特定上下文的规则。我根据要调用的上下文在会话中加载文件。最近执行的数量增加了很多，随之而来的是延迟下降。我发现构建 KieBuilder 需要很长时间，这与应用程序上的请求数量成正比。根据一些研究，看起来所有调用都在构建步骤停止，并在构建完成后继续。我不确定为什么会发生这种情况，因为从所有需要加载不同文件的意义上讲，调用都已断开。 我发现一些对 KieBuilder 的引用花费了太多时间，但找不到任何解决方案。
正在使用的 Drools 版本：7.4.1-Final
我的代码：
private StatelessKieSession loadSession(final String namespace,final String path) {
final KieServices kieServices = KieServices.Factory.get();
final KieResources kieResources = kieServices.getResources();
final KieFileSystem kieFileSystem = kieServices.newKieFileSystem();
final InputStream ruleFile = ruleStore.getRulesForRuleId(namespace,path);
kieFileSystem.write(kieResources.newInputStreamResource(ruleFile)
.setSourcePath(DRL_PATH)
.setResourceType(ResourceType.DRL));
log.info("Creating KieBuilder for {}/{}",namespace,path);
final KieBuilder kieBuilder = kieServices.newKieBuilder(kieFileSystem).buildAll();
if (kieBuilder.getResults().hasMessages(Message.Level.ERROR)) {
throw new InvalidRulesException("Failed to load rules from S3 in "
+ "Drools engine with error: " + kieBuilder.getResults().toString());
}
log.info("Created KieBuilder for {}/{}",path);
final KieContainer kContainer = kieServices.newKieContainer(
kieServices.getRepository().getDefaultReleaseId());
return kContainer.newStatelessKieSession();
}
排队时间太长：
final KieBuilder kieBuilder = kieServices.newKieBuilder(kieFileSystem).buildAll();
显示应用程序只为 KieBuilder 等待 20 秒的日志：
(http-bio-0.0.0.0-8080-exec-95) com.amazon.wforuleengine.drools.RulesSessionFactory: Creating KieBuilder for scheduling/amazon/cs/CafeteriaTimings.drl
12 Jan 2021 10:36:10,904 (http-bio-0.0.0.0-8080-exec-92) com.amazon.wforuleengine.drools.RulesSessionFactory: Creating KieBuilder for scheduling/amazon/cs/MandatoryOffDays.drl
12 Jan 2021 10:36:10,911 (http-bio-0.0.0.0-8080-exec-82) com.amazon.wforuleengine.drools.RulesSessionFactory: Creating KieBuilder for scheduling/amazon/cs/ConsecutiveOffDaysPerWeek.drl
12 Jan 2021 10:36:10,912 (http-bio-0.0.0.0-8080-exec-93) com.amazon.wforuleengine.drools.RulesSessionFactory: Creating KieBuilder for scheduling/amazon/cs/MaxWorkingHoursPerSiteWeek.drl
12 Jan 2021 10:36:10,916 (http-bio-0.0.0.0-8080-exec-53) com.amazon.wforuleengine.drools.RulesSessionFactory: Creating KieBuilder for scheduling/amazon/cs/MaxTimeBetweenStartAndLunch.drl
12 Jan 2021 10:36:10,916 (http-bio-0.0.0.0-8080-exec-79) com.amazon.wforuleengine.drools.RulesSessionFactory: Creating KieBuilder for scheduling/amazon/cs/MaxWorkingHoursPerDay.drl
12 Jan 2021 10:36:10,922 (http-bio-0.0.0.0-8080-exec-97) com.amazon.wforuleengine.drools.RulesSessionFactory: Creating KieBuilder for scheduling/amazon/cs/BreakFrequency.drl
12 Jan 2021 10:36:10,924 (http-bio-0.0.0.0-8080-exec-86) com.amazon.wforuleengine.drools.RulesSessionFactory: Creating KieBuilder for scheduling/amazon/cs/MaxTimeBetweenStartAndBreak.drl
12 Jan 2021 10:36:11,004 (http-bio-0.0.0.0-8080-exec-90) com.amazon.wforuleengine.drools.RulesSessionFactory: Creating KieBuilder for scheduling/amazon/cs/CanLunchExistOutsideCafeteriaTime.drl
12 Jan 2021 10:36:11,004 (http-bio-0.0.0.0-8080-exec-87) com.amazon.wforuleengine.drools.RulesSessionFactory: Creating KieBuilder for scheduling/amazon/cs/LunchDuration.drl
12 Jan 2021 10:36:11,004 (http-bio-0.0.0.0-8080-exec-94) com.amazon.wforuleengine.drools.RulesSessionFactory: Creating KieBuilder for scheduling/amazon/cs/MaxConsecutiveDays.drl
12 Jan 2021 10:36:11,005 (http-bio-0.0.0.0-8080-exec-83) com.amazon.wforuleengine.drools.RulesSessionFactory: Creating KieBuilder for scheduling/amazon/cs/LunchFrequency.drl
12 Jan 2021 10:36:11,010 (http-bio-0.0.0.0-8080-exec-85) com.amazon.wforuleengine.drools.RulesSessionFactory: Creating KieBuilder for scheduling/amazon/cs/MinOffDaysPerWeek.drl
12 Jan 2021 10:36:11,015 (http-bio-0.0.0.0-8080-exec-88) com.amazon.wforuleengine.drools.RulesSessionFactory: Creating KieBuilder for scheduling/amazon/cs/MaxWorkingHoursPerWeek.drl
12 Jan 2021 10:36:11,017 (http-bio-0.0.0.0-8080-exec-84) com.amazon.wforuleengine.drools.RulesSessionFactory: Creating KieBuilder for scheduling/amazon/cs/MinWorkHoursBeforeLunch.drl
12 Jan 2021 10:36:11,018 (http-bio-0.0.0.0-8080-exec-96) com.amazon.wforuleengine.drools.RulesSessionFactory: Creating KieBuilder for scheduling/amazon/cs/BreakDuration.drl
12 Jan 2021 10:36:11,022 (http-bio-0.0.0.0-8080-exec-89) com.amazon.wforuleengine.drools.RulesSessionFactory: Creating KieBuilder for scheduling/amazon/cs/WorkIntervalsList.drl
12 Jan 2021 10:36:11,032 (http-bio-0.0.0.0-8080-exec-99) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:11,037 (http-bio-0.0.0.0-8080-exec-80) com.amazon.wforuleengine.drools.RulesSessionFactory: Creating KieBuilder for scheduling/amazon/cs/MinTimeBetweenStartAndBreak.drl
12 Jan 2021 10:36:11,104 (http-bio-0.0.0.0-8080-exec-78) com.amazon.wforuleengine.drools.RulesSessionFactory: Creating KieBuilder for scheduling/amazon/cs/MinConsecutiveOffWorkHours.drl
12 Jan 2021 10:36:11,108 (http-bio-0.0.0.0-8080-exec-81) com.amazon.wforuleengine.drools.RulesSessionFactory: Creating KieBuilder for scheduling/amazon/cs/DayValidationType.drl
12 Jan 2021 10:36:11,203 (http-bio-0.0.0.0-8080-exec-100) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:11,322 (http-bio-0.0.0.0-8080-exec-2) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:14,324 (http-bio-0.0.0.0-8080-exec-1) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:15,224 (http-bio-0.0.0.0-8080-exec-3) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:16,207 (http-bio-0.0.0.0-8080-exec-4) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:16,404 (http-bio-0.0.0.0-8080-exec-6) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:16,503 (http-bio-0.0.0.0-8080-exec-5) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:17,003 (http-bio-0.0.0.0-8080-exec-7) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:17,203 (http-bio-0.0.0.0-8080-exec-8) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:18,513 (http-bio-0.0.0.0-8080-exec-9) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:19,122 (http-bio-0.0.0.0-8080-exec-10) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:19,803 (http-bio-0.0.0.0-8080-exec-11) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:19,903 (http-bio-0.0.0.0-8080-exec-12) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:20,114 (http-bio-0.0.0.0-8080-exec-13) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:20,213 (http-bio-0.0.0.0-8080-exec-14) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:20,407 (http-bio-0.0.0.0-8080-exec-15) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:20,703 (http-bio-0.0.0.0-8080-exec-16) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:21,303 (http-bio-0.0.0.0-8080-exec-17) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:21,503 (http-bio-0.0.0.0-8080-exec-18) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:21,603 (http-bio-0.0.0.0-8080-exec-19) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:21,603 (http-bio-0.0.0.0-8080-exec-20) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:23,711 (MetricAggregationClientScheduled-1) com.amazon.aws.cloudwatch.extension.client.impl.MetricAggregationCloudWatchClient: flush is invoked with sync false
12 Jan 2021 10:36:24,308 (MetricAggregationClientPublisher-1) com.amazon.aws.cloudwatch.extension.client.impl.MetricAggregationCloudWatchClient: Stats after submit are {}
12 Jan 2021 10:36:24,905 (http-bio-0.0.0.0-8080-exec-21) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:25,703 (http-bio-0.0.0.0-8080-exec-22) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:26,518 (http-bio-0.0.0.0-8080-exec-23) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:26,603 (http-bio-0.0.0.0-8080-exec-24) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:26,903 (http-bio-0.0.0.0-8080-exec-25) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:27,218 (http-bio-0.0.0.0-8080-exec-26) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:27,403 (http-bio-0.0.0.0-8080-exec-27) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:28,803 (http-bio-0.0.0.0-8080-exec-28) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:29,503 (http-bio-0.0.0.0-8080-exec-29) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:29,903 (http-bio-0.0.0.0-8080-exec-30) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:30,129 (http-bio-0.0.0.0-8080-exec-31) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:30,803 (http-bio-0.0.0.0-8080-exec-32) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:31,819 (http-bio-0.0.0.0-8080-exec-34) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:31,902 (http-bio-0.0.0.0-8080-exec-33) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:32,103 (http-bio-0.0.0.0-8080-exec-35) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:32,203 (http-bio-0.0.0.0-8080-exec-36) org.jboss.resteasy.core.Synchronousdispatcher: PathInfo: /ping
12 Jan 2021 10:36:32,219 (http-bio-0.0.0.0-8080-exec-90) org.drools.compiler.kie.builder.impl.KieRepositoryImpl: KieModule was added: MemoryKieModule[releaseId=org.default:drl54:1.0.0-SNAPSHOT]
12 Jan 2021 10:36:32,322 (http-bio-0.0.0.0-8080-exec-90) com.amazon.wforuleengine.drools.RulesSessionFactory: Created KieBuilder for scheduling/amazon/cs/CanLunchExistOutsideCafeteriaTime.drl
12 Jan 2021 10:36:32,613 (http-bio-0.0.0.0-8080-exec-82) org.drools.compiler.kie.builder.impl.KieRepositoryImpl: KieModule was added: MemoryKieModule[releaseId=org.default:drl80:1.0.0-SNAPSHOT]
12 Jan 2021 10:36:32,613 (http-bio-0.0.0.0-8080-exec-82) com.amazon.wforuleengine.drools.RulesSessionFactory: Created KieBuilder for scheduling/amazon/cs/ConsecutiveOffDaysPerWeek.drl
12 Jan 2021 10:36:33,913 (http-bio-0.0.0.0-8080-exec-79) org.drools.compiler.kie.builder.impl.KieRepositoryImpl: KieModule was added: MemoryKieModule[releaseId=org.default:drl76:1.0.0-SNAPSHOT]
12 Jan 2021 10:36:33,913 (http-bio-0.0.0.0-8080-exec-79) com.amazon.wforuleengine.drools.RulesSessionFactory: Created KieBuilder for scheduling/amazon/cs/MaxWorkingHoursPerDay.drl
12 Jan 2021 10:36:34,205 (http-bio-0.0.0.0-8080-exec-92) org.drools.compiler.kie.builder.impl.KieRepositoryImpl: KieModule was added: MemoryKieModule[releaseId=org.default:drl0:1.0.0-SNAPSHOT]
12 Jan 2021 10:36:34,205 (http-bio-0.0.0.0-8080-exec-92) com.amazon.wforuleengine.drools.RulesSessionFactory: Created KieBuilder for scheduling/amazon/cs/MandatoryOffDays.drl
12 Jan 2021 10:36:34,210 (http-bio-0.0.0.0-8080-exec-95) org.drools.compiler.kie.builder.impl.KieRepositoryImpl: KieModule was added: MemoryKieModule[releaseId=org.default:drl92:1.0.0-SNAPSHOT]
12 Jan 2021 10:36:34,210 (http-bio-0.0.0.0-8080-exec-95) com.amazon.wforuleengine.drools.RulesSessionFactory: Created KieBuilder for scheduling/amazon/cs/CafeteriaTimings.drl
12 Jan 2021 10:36:34,608 (http-bio-0.0.0.0-8080-exec-81) org.drools.compiler.kie.builder.impl.KieRepositoryImpl: KieModule was added: MemoryKieModule[releaseId=org.default:drl31:1.0.0-SNAPSHOT]
12 Jan 2021 10:36:34,609 (http-bio-0.0.0.0-8080-exec-81) com.amazon.wforuleengine.drools.RulesSessionFactory: Created KieBuilder for scheduling/amazon/cs/DayValidationType.drl
12 Jan 2021 10:36:34,615 (http-bio-0.0.0.0-8080-exec-85) org.drools.compiler.kie.builder.impl.KieRepositoryImpl: KieModule was added: MemoryKieModule[releaseId=org.default:drl8:1.0.0-SNAPSHOT]
12 Jan 2021 10:36:34,615 (http-bio-0.0.0.0-8080-exec-85) com.amazon.wforuleengine.drools.RulesSessionFactory: Created KieBuilder for scheduling/amazon/cs/MinOffDaysPerWeek.drl
12 Jan 2021 10:36:34,716 (http-bio-0.0.0.0-8080-exec-87) org.drools.compiler.kie.builder.impl.KieRepositoryImpl: KieModule was added: MemoryKieModule[releaseId=org.default:drl79:1.0.0-SNAPSHOT]
12 Jan 2021 10:36:34,716 (http-bio-0.0.0.0-8080-exec-87) com.amazon.wforuleengine.drools.RulesSessionFactory: Created KieBuilder for scheduling/amazon/cs/LunchDuration.drl
12 Jan 2021 10:36:35,218 (http-bio-0.0.0.0-8080-exec-94) org.drools.compiler.kie.builder.impl.KieRepositoryImpl: KieModule was added: MemoryKieModule[releaseId=org.default:drl94:1.0.0-SNAPSHOT]
12 Jan 2021 10:36:35,218 (http-bio-0.0.0.0-8080-exec-94) com.amazon.wforuleengine.drools.RulesSessionFactory: Created KieBuilder for scheduling/amazon/cs/MaxConsecutiveDays.drl
我想了解为什么 KieBuilder 所用的时间与调用次数成正比，以及一种优化所用时间的方法。
谢谢！
解决方法
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