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Cloudera, BigData, Semantic IoT, Hadoop, NoSQL

Cloudera CDH/CDP 및 Hadoop EcoSystem, Semantic IoT등의 개발/운영 기술을 정리합니다. gooper@gooper.com로 문의 주세요.


Drools 실시간 쿼리 변환 모니터링(팩트내 필드값의 변경사항을 실시간으로 추적함)하는 테스트 java 프로그램

총관리자 2016.07.21 17:42 조회 수 : 199

---------실행결과-------------
[2016-07-21 17:38:27] [CustomWorkingMemoryEventListener] [23] [INFO] Object Inserted : [fact 0:1:888473870:888473870:1:DEFAULT:Server [name=winServer, processors=4, memory=4096, diskSpace=2048, cpuUsage=25, getName()=winServer, getProcessors()=4, getMemory()=4096, getDiskSpace()=2048, getCpuUsage()=25, getClass()=class com.gooper.drool_test.ServerInfo, hashCode()=888473870, toString()=com.gooper.drool_test.ServerInfo@34f5090e]] Knowledge Runtime: org.drools.core.impl.StatefulKnowledgeSessionImpl@614ca7df 
[2016-07-21 17:38:27] [CustomWorkingMemoryEventListener] [23] [INFO] Object Inserted : [fact 0:2:416841088:416841088:2:DEFAULT:Server [name=ubuntuServer, processors=4, memory=2048, diskSpace=1024, cpuUsage=70, getName()=ubuntuServer, getProcessors()=4, getMemory()=2048, getDiskSpace()=1024, getCpuUsage()=70, getClass()=class com.gooper.drool_test.ServerInfo, hashCode()=416841088, toString()=com.gooper.drool_test.ServerInfo@18d87d80]] Knowledge Runtime: org.drools.core.impl.StatefulKnowledgeSessionImpl@614ca7df 
[2016-07-21 17:38:27] [CustomWorkingMemoryEventListener] [23] [INFO] Object Inserted : [fact 0:3:1412794598:1412794598:3:DEFAULT:Server [name=debianServer, processors=4, memory=2048, diskSpace=1024, cpuUsage=10, getName()=debianServer, getProcessors()=4, getMemory()=2048, getDiskSpace()=1024, getCpuUsage()=10, getClass()=class com.gooper.drool_test.ServerInfo, hashCode()=1412794598, toString()=com.gooper.drool_test.ServerInfo@543588e6]] Knowledge Runtime: org.drools.core.impl.StatefulKnowledgeSessionImpl@614ca7df 
 session.getFactCount() = 3
[2016-07-21 17:38:27] [CustomAgendaEventListener] [133] [INFO] Match Created : [fact 0:2:416841088:416841088:2:DEFAULT:Server [name=ubuntuServer, processors=4, memory=2048, diskSpace=1024, cpuUsage=70, getName()=ubuntuServer, getProcessors()=4, getMemory()=2048, getDiskSpace()=1024, getCpuUsage()=70, getClass()=class com.gooper.drool_test.ServerInfo, hashCode()=416841088, toString()=com.gooper.drool_test.ServerInfo@18d87d80]] 
[2016-07-21 17:38:27] [CustomAgendaEventListener] [133] [INFO] Match Created : [fact 0:1:888473870:888473870:1:DEFAULT:Server [name=winServer, processors=4, memory=4096, diskSpace=2048, cpuUsage=25, getName()=winServer, getProcessors()=4, getMemory()=4096, getDiskSpace()=2048, getCpuUsage()=25, getClass()=class com.gooper.drool_test.ServerInfo, hashCode()=888473870, toString()=com.gooper.drool_test.ServerInfo@34f5090e]] 
[2016-07-21 17:38:27] [CustomAgendaEventListener] [113] [INFO] Before Match Fired : [fact 0:2:416841088:416841088:2:DEFAULT:Server [name=ubuntuServer, processors=4, memory=2048, diskSpace=1024, cpuUsage=70, getName()=ubuntuServer, getProcessors()=4, getMemory()=2048, getDiskSpace()=1024, getCpuUsage()=70, getClass()=class com.gooper.drool_test.ServerInfo, hashCode()=416841088, toString()=com.gooper.drool_test.ServerInfo@18d87d80]] 
[2016-07-21 17:38:27] [check minimum server configuration2] [20] [INFO] Server "ubuntuServer" was rejected... 
[2016-07-21 17:38:27] [CustomWorkingMemoryEventListener] [18] [INFO] Object Deleted : [fact 0:2:416841088:416841088:2:DEFAULT:Server [name=ubuntuServer, processors=4, memory=2048, diskSpace=1024, cpuUsage=70, getName()=ubuntuServer, getProcessors()=4, getMemory()=2048, getDiskSpace()=1024, getCpuUsage()=70, getClass()=class com.gooper.drool_test.ServerInfo, hashCode()=416841088, toString()=com.gooper.drool_test.ServerInfo@18d87d80]] Knowledge Runtime: org.drools.core.impl.StatefulKnowledgeSessionImpl@614ca7df 
[2016-07-21 17:38:27] [CustomAgendaEventListener] [76] [DEBUG] Rule fired: check minimum server configuration2 
[2016-07-21 17:38:27] [CustomAgendaEventListener] [113] [INFO] Before Match Fired : [fact 0:1:888473870:888473870:1:DEFAULT:Server [name=winServer, processors=4, memory=4096, diskSpace=2048, cpuUsage=25, getName()=winServer, getProcessors()=4, getMemory()=4096, getDiskSpace()=2048, getCpuUsage()=25, getClass()=class com.gooper.drool_test.ServerInfo, hashCode()=888473870, toString()=com.gooper.drool_test.ServerInfo@34f5090e]] 
[2016-07-21 17:38:27] [check minimum server configuration2] [20] [INFO] Server "winServer" was rejected... 
[2016-07-21 17:38:27] [CustomWorkingMemoryEventListener] [18] [INFO] Object Deleted : [fact 0:1:888473870:888473870:1:DEFAULT:Server [name=winServer, processors=4, memory=4096, diskSpace=2048, cpuUsage=25, getName()=winServer, getProcessors()=4, getMemory()=4096, getDiskSpace()=2048, getCpuUsage()=25, getClass()=class com.gooper.drool_test.ServerInfo, hashCode()=888473870, toString()=com.gooper.drool_test.ServerInfo@34f5090e]] Knowledge Runtime: org.drools.core.impl.StatefulKnowledgeSessionImpl@614ca7df 
[2016-07-21 17:38:27] [CustomAgendaEventListener] [76] [DEBUG] Rule fired: check minimum server configuration2 
 matched count of Fact = 2
listener.getCurrentServers().size() : 1
[2016-07-21 17:38:27] [CustomWorkingMemoryEventListener] [29] [INFO] Object Updated : [fact 0:2:416841088:416841088:5:DEFAULT:Server [name=ubuntuServer, processors=4, memory=2048, diskSpace=1024, cpuUsage=10, getName()=ubuntuServer, getProcessors()=4, getMemory()=2048, getDiskSpace()=1024, getCpuUsage()=10, getClass()=class com.gooper.drool_test.ServerInfo, hashCode()=416841088, toString()=com.gooper.drool_test.ServerInfo@18d87d80]] Knowledge Runtime: org.drools.core.impl.StatefulKnowledgeSessionImpl@614ca7df 
listener.getCurrentServers().size() : 1
[2016-07-21 17:38:27] [CustomWorkingMemoryEventListener] [29] [INFO] Object Updated : [fact 0:2:416841088:416841088:6:DEFAULT:Server [name=ubuntuServer, processors=4, memory=2048, diskSpace=1024, cpuUsage=5, getName()=ubuntuServer, getProcessors()=4, getMemory()=2048, getDiskSpace()=1024, getCpuUsage()=5, getClass()=class com.gooper.drool_test.ServerInfo, hashCode()=416841088, toString()=com.gooper.drool_test.ServerInfo@18d87d80]] Knowledge Runtime: org.drools.core.impl.StatefulKnowledgeSessionImpl@614ca7df 
listener.getCurrentServers().size() : 1
listener.getCurrentServers().size() : 1
 session.getObject(ubuntuServerFactHandle) : null
ubuntuServerFactHandle : 0:2:416841088:416841088:6:DEFAULT


------------------------------DroolsTest2.java----------------
package com.gooper.drool_test;

import org.kie.api.KieBase;
import org.kie.api.io.ResourceType;
import org.kie.api.runtime.KieSession;
import org.kie.api.runtime.rule.FactHandle;
import org.kie.api.runtime.rule.LiveQuery;
import org.kie.internal.builder.KnowledgeBuilder;
import org.kie.internal.builder.KnowledgeBuilderFactory;
import org.kie.internal.io.ResourceFactory;
import org.kie.internal.builder.KnowledgeBuilderError;

import com.gooper.drool_test.CustomWorkingMemoryEventListener;
import com.gooper.drool_test.CustomAgendaEventListener;

/* 실시간 쿼리 변환 모니터링
 * 팩트내의 필드값이 변경될때 실시간으로 변화를 추적함
 */
public class DroolsTest2 {

        public static final void main(String[] args) {
               try {

              // 지식 빌더 생성
                    KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
                    
                    // 지식 빌더에 룰정의파일 설정
                    kbuilder.add(ResourceFactory. newClassPathResource("server_rule.drl"), ResourceType. DRL );

if (kbuilder.hasErrors()) {
if(kbuilder.getErrors().size() > 0) {
for(KnowledgeBuilderError kerror : kbuilder.getErrors()) {
System.out.println("error :" + kerror);
}
}
}
// 새로운 지식 베이스 생성
                    KieBase kiebase = kbuilder.newKnowledgeBase();
                    
                    // 새로운 지식 베이스 세션 생성
                    KieSession session = kiebase.newKieSession();
                    
                    // logger등록(팩트에 의해 생성된 엑티베이션(Activation)관련 이벤트만 로깅)
                    session.addEventListener(new CustomAgendaEventListener());
                    
                    // logger등록(팩트의 추가/수정/제거 이벤트에 대한 정보)
                    session.addEventListener(new CustomWorkingMemoryEventListener());
                    
                    // 지식 베이스의 getFactType 메서드를 이용하여 동적으로 팩트를 인스턴스화 시킨다.
                    // (팩트가 선언되어 있는 룰의 패키지 이름과 팩트의 이름을 인자로 받는다.) 
                    
                    //winServer 생성
                    ServerInfo winServer = new ServerInfo("winServer", 4, 4096, 2048, 25);
                    //winServer등록
                    session.insert(winServer);
                    
                    //ubuntuServer생성
                    ServerInfo ubuntuServer = new ServerInfo("ubuntuServer", 4, 2048, 1024, 70);
                    //ubuntuServer등록
                    FactHandle ubuntuServerFactHandle = session.insert(ubuntuServer);
                    
                    //debianServer생성
                    ServerInfo debianServer = new ServerInfo("debianServer", 4, 2048, 1024, 10);
                    //debianServer등록
                    session.insert(debianServer);
                    
                    System.out.println(" session.getFactCount() = " + session.getFactCount());
                    
                    int matchedCnt = session.fireAllRules();
                    System.out.println(" matched count of Fact = " + matchedCnt);
                    
                    //System.out.println(" session.getProcessInstances() : " + session.getProcessInstances());
                    
                    
                    // 쿼리를 모니터링하는데 사용하는 리스너
                    CustomViewChangedEventListener listener = new CustomViewChangedEventListener();
                    
                    // 모니터링 대상 쿼리이름, 쿼리에 필요한 파라미터, 쿼리를 모니터링하는데 사용하는 리스너
                    LiveQuery query = session.openLiveQuery("serverCpuUsage",  new Object[]{20},  listener);
                    
                    
                    // query results에 단지 1개의 서버 오브젝트만 있음
                    System.out.println("listener.getCurrentServers().size() : " + listener.getCurrentServers().size());
                    
                    ubuntuServer.setCpuUsage(10);
                    session.update(ubuntuServerFactHandle,  ubuntuServer);
                    
                    // query resutls에 2개의 서버 오브젝트가 있음
                    System.out.println("listener.getCurrentServers().size() : " +  listener.getCurrentServers().size());
                    
                    ubuntuServer.setCpuUsage(5);
                    session.update(ubuntuServerFactHandle,  ubuntuServer);
                    
                    // 2 server objects still in the query results
                    System.out.println("listener.getCurrentServers().size() : " + listener.getCurrentServers().size());
                    
                    // but one of them was updated
                    System.out.println("listener.getCurrentServers().size() : " + listener.getCurrentServers().size());
                   
                    //FactHandle로 내용확인하기
                    System.out.println(" session.getObject(ubuntuServerFactHandle) : " + session.getObject(ubuntuServerFactHandle));
                    
                    
                   // System.out.println(" session.getProcessInstances() : " + session.getProcessInstances());
                    
                    
                    query.close();

                    session.dispose();
                    
                    // match된 fact를 확인함
                    System.out.println("ubuntuServerFactHandle : "+ubuntuServerFactHandle.toExternalForm());


              } catch (Throwable t) {
                     t.printStackTrace();
              }
       }
}
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