메뉴 건너뛰기

Cloudera, BigData, Semantic IoT, Hadoop, NoSQL

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


Drools 슬라이딩 윈도우 예제

총관리자 2016.07.28 15:03 조회 수 : 2803

---결과 값 -------------

 init session.getFactCount() = 0

speed: 602.92267

speed: 601.1532

speed: 607.839

speed: 600.9022

speed: 609.21796

speed: 602.91187

speed: 604.02515

speed: 608.272

speed: 607.80176

speed: 606.90405

AA001 average speed: 605.982958984375

AA001 average speed: 605.982958984375

AA001 average speed: 605.982958984375

AA001 average speed: 605.982958984375

AA001 average speed: 605.982958984375

AA001 average speed: 605.982958984375

AA001 average speed: 605.982958984375

AA001 average speed: 605.982958984375

AA001 average speed: 605.982958984375

AA001 average speed: 605.982958984375

 matched count of Fact = 10


-------sliding_rules.drl--------------

package com.gooper.drool_test;


import com.gooper.drool_test.model.FlightStatus

import com.gooper.drool_test.model.FlightControl

import com.gooper.drool_test.model.EmergencySignal


declare FlightStatus

    @role(event)

end


declare EmergencySignal

    @role(event)

end


rule "First contact"

salience 100

when

    $currentFlight : FlightStatus() from entry-point "flight-control"

    not (exists (FlightStatus(this != $currentFlight, flight == $currentFlight.flight) from entry-point "flight-control"))

    $control : FlightControl()

then

    $control.addFlight($currentFlight);

    System.out.println("First contact with Flight " + $currentFlight.getFlight());

end


rule "flight arrival"

when

    $flight : FlightStatus() from entry-point "flight-arrival"

    $control : FlightControl()

    // Obtain resources to prepare the flight landing

then

    System.out.println("Flight " + $flight.getFlight() + " arriving to " + $control.getAirport() + ". Sending instructions");

    // Send instructions to arriving flight

end


rule "flight average speed"

when

    $flight : FlightStatus() from entry-point "flight-control"

    $averageSpeed : Number(floatValue > 0) from accumulate(FlightStatus(flight==$flight.flight, $speed:speed) over window:length(5) 

                                                          from entry-point "flight-control",

                                                          average($speed))

then

    System.out.println($flight.getFlight() + " average speed: " + $averageSpeed);

end



-------------------SlidingWindow.java-----------------------

package com.gooper.drool_test;


import java.util.concurrent.TimeUnit;


import org.drools.core.time.SessionPseudoClock;

import org.kie.api.KieBase;

import org.kie.api.KieBaseConfiguration;

import org.kie.api.conf.EventProcessingOption;

import org.kie.api.io.ResourceType;

import org.kie.api.runtime.KieSession;

import org.kie.api.runtime.KieSessionConfiguration;

import org.kie.api.runtime.conf.ClockTypeOption;

import org.kie.api.runtime.rule.EntryPoint;

import org.kie.internal.KnowledgeBaseFactory;

import org.kie.internal.builder.KnowledgeBuilder;

import org.kie.internal.builder.KnowledgeBuilderFactory;

import org.kie.internal.io.ResourceFactory;


import com.gooper.drool_test.custom.CustomAgendaEventListener;

import com.gooper.drool_test.custom.CustomWorkingMemoryEventListener;

import com.gooper.drool_test.helper.FlightSimulation;

import com.gooper.drool_test.model.FlightStatus;


import org.kie.internal.builder.KnowledgeBuilderError;


/* 

 * Sliding-window test

 */

public class SlidingWindow {


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

               try {


              // 지식 빌더 생성

                    KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();

                    

                    // 지식 빌더에 룰정의파일 설정

                    kbuilder.add(ResourceFactory. newClassPathResource("sliding_rules.drl"), ResourceType. DRL );


if (kbuilder.hasErrors()) {

if(kbuilder.getErrors().size() > 0) {

for(KnowledgeBuilderError kerror : kbuilder.getErrors()) {

System.out.println("error :" + kerror);

}

}

}

// 설정정보를 변경하기위한 config접근 정보를 얻음

KieBaseConfiguration config = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();

config.setOption(EventProcessingOption.STREAM);

KieSessionConfiguration conf = KnowledgeBaseFactory.newKnowledgeSessionConfiguration();

conf.setOption(ClockTypeOption.get("pseudo"));

// 새로운 지식 베이스 생성

                    KieBase kiebase = kbuilder.newKnowledgeBase();

                    

                    // 새로운 지식 베이스 세션 생성

                    KieSession session = kiebase.newKieSession(conf,null);

                    

                    // 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());

                    

                    System.out.println(" init session.getFactCount() = " + session.getFactCount());

                    

                    // SessionClock의 레퍼런스를 얻는다

                    SessionPseudoClock clock = session.getSessionClock();

                    

                    FlightSimulation flightAA001 = new FlightSimulation("AA001", "San Francisco", "Los Angeles", 270);

                    

                    for(int i = 0; i < 10; i++) {

                    FlightStatus flightStatus = flightAA001.update();

                    EntryPoint flightArrivalEntryPoint = session.getEntryPoint("flight-control");

                    flightArrivalEntryPoint.insert(flightStatus);

                    clock.advanceTime(5,  TimeUnit.MINUTES);

                    Thread.sleep(100);

                    }

                    

                    int matchedCnt = session.fireAllRules();

                    System.out.println(" matched count of Fact = " + matchedCnt);

                    

                    session.dispose();


              } catch (Throwable t) {

                     t.printStackTrace();

              }

       }

}


----------------------FlightSimulation.java------------------------

package com.gooper.drool_test.helper;


import java.util.Random;

import com.gooper.drool_test.model.FlightStatus;



/**

 * 

 * @author Lucas Amador

 * 

 */

public class FlightSimulation {


    private static final int AIRPORT_AIR_SPACE = 50;

    private Random rnd = new Random();


    private final String flight;

    private final String origin;

    private final String destination;

    private long distance;

    private boolean landed;


    public FlightSimulation(String flight, String origin, String destination, long distance) {

        this.flight = flight;

        this.origin = origin;

        this.destination = destination;

        this.distance = distance;

    }


    public FlightStatus update() {

        FlightStatus flightStatus = new FlightStatus();

        flightStatus.setFlight(flight);

        flightStatus.setDestination(destination);

        flightStatus.setOrigin(origin);

        flightStatus.setDestination(destination);

        this.distance = calculateDistance();

        flightStatus.setDistance(this.distance);

        flightStatus.setSpeed(currentSpeed());

        System.out.println("speed: " + flightStatus.getSpeed());

        return flightStatus;

    }


    private long calculateDistance() {

        if ((distance - AIRPORT_AIR_SPACE) <= AIRPORT_AIR_SPACE) {

            landed = true;

            return 0;

        }

        return distance - AIRPORT_AIR_SPACE;

    }


    private float currentSpeed() {

        return (rnd.nextFloat() * 10) + 600;

    }


    public boolean isLanded() {

        return landed;

    }


}





--------------------------FlightStatus.java--------------------
package com.gooper.drool_test.model;

import java.util.Date;

/**
 * 
 * @author Lucas Amador
 * 
 */
public class FlightStatus {

    private String flight;
    private Date timestamp;
    private String origin;
    private String destination;
    private long distance;
    private float speed;
    private boolean processed;

    public String getFlight() {
        return flight;
    }

    public void setFlight(String flight) {
        this.flight = flight;
    }

    public Date getTimestamp() {
        return timestamp;
    }

    public void setTimestamp(Date timestamp) {
        this.timestamp = timestamp;
    }

    public String getOrigin() {
        return origin;
    }

    public void setOrigin(String origin) {
        this.origin = origin;
    }

    public String getDestination() {
        return destination;
    }

    public void setDestination(String destination) {
        this.destination = destination;
    }

    public long getDistance() {
        return distance;
    }

    public void setDistance(long distance) {
        this.distance = distance;
    }

    public float getSpeed() {
        return speed;
    }

    public void setSpeed(float speed) {
        this.speed = speed;
    }

    public void setProcessed(boolean processed) {
        this.processed = processed;
    }

    public boolean getProcessed() {
        return processed;
    }

@Override
public String toString() {
return "FlightStatus [flight=" + flight + ", timestamp=" + timestamp + ", origin=" + origin + ", destination="
+ destination + ", distance=" + distance + ", speed=" + speed + ", processed=" + processed
+ ", getFlight()=" + getFlight() + ", getTimestamp()=" + getTimestamp() + ", getOrigin()=" + getOrigin()
+ ", getDestination()=" + getDestination() + ", getDistance()=" + getDistance() + ", getSpeed()="
+ getSpeed() + ", getProcessed()=" + getProcessed() + ", getClass()=" + getClass() + ", hashCode()="
+ hashCode() + ", toString()=" + super.toString() + "]";
}
    
    

}

번호 제목 날짜 조회 수
270 시스템날짜를 현재 정보로 동기화 하는 방법(rdate, ntpdate이용) 2014.08.24 4297
269 MySQL 다운로드 및 리눅스에서 간단 컴파일 설치 2013.03.08 4309
268 우분투 16.04 LTS에 apache2와 tomcat7 연동하여 설치하기 2014.05.09 4309
267 hue.axes_accessattempt테이블 데이터 샘플 2020.02.10 4312
266 apk 파일 위치 file 2015.05.25 4320
265 Soft memory limit exceeded (at 100.05% of capacity) 오류 조치 2022.01.17 4320
264 [KTS Cluster의 Key Trustee Server]self-signed 인증서 발급및 설정 방법 2023.06.27 4323
263 mybatis와 spring을 org.apache.commons.dbcp2.BasicDataSource의 DataSource로 연동할때 DB설정(참고) 2016.10.31 4324
262 jsoup 사용 예제 2014.06.06 4332
261 Impala의 Queries탭에서 여러조건으로 쿼리 찾기 2018.05.09 4334
260 os가 windows7인 host pc에서 ubuntu가 os인 guest pc에 접근하기 위한 네트워크설정 2014.04.20 4336
259 Flume과 Kafka를 사용한 초당 100만개 로그 수집 테스트 file 2016.10.31 4339
258 Cassandra 3.4(3.10) 설치/설정 (5대로 clustering) 2016.04.11 4342
257 커리 변경 이벤트를 처리하기 위한 구현클래스 2016.07.21 4342
256 Using The ZooKeeper CLI에서 zkCli의 위치 2014.11.02 4345
255 마이바티스(MyBatis)쿼리로그 출력및 정렬하기 2015.12.01 4345
254 centsOS vsftpd설치하기 2013.12.17 4348
253 [Magento]php7에 Composer를 이용하여 Magento 2.1.3 설치 file 2017.01.30 4348
252 [TLS]TLS용 사설 인증서 변경 혹은 신규 지정시 No trusted certificate found 오류 발생시 확인및 조치사항 2022.03.15 4353
251 [HDFS]Encryption Zone에 생성된 테이블 조회시 Failed to open HDFS file hdfs://nameservice1/tmp/zone1/sec_test_file.txt Error(255): Unknown error 255 Root cause: AuthorizationException: User:impala not allowd to do 'DECRYPT_EEK' on 'testkey' 2023.06.29 4357
위로