[RxJava] timer

timer

호출 시점부터 지정시간 동안 대기한 후 long type 숫자 0 하나만 통지하고 종료하는 Flowable/Observable을 생성하는 연산자이다.

timer 메서드는 기본적으로 Schedulers.computation() 스케줄러의해 실행된다.

[소스코드]

import io.reactivex.Flowable;

import java.util.Arrays;
import java.util.List;
import java.util.concurrent.TimeUnit;

public class Main {
    public static void main(String[] args) throws Exception {
        tiner();
    }

    static void tiner() throws Exception {
        Flowable<Long> flowable = Flowable.timer(1000L, TimeUnit.MILLISECONDS);
        flowable.subscribe(new PrintSubscriber<>());
        Thread.sleep(5000L);
    }
}

[Subscribe 코드]

import io.reactivex.subscribers.DisposableSubscriber;

public class PrintSubscriber<T> extends DisposableSubscriber<T> {

    private String label;

    public PrintSubscriber() {
    }

    public PrintSubscriber(String label) {
        this.label = label;
    }
    @Override
    public void onNext(T data) {
        String threadName = Thread.currentThread().getName();
        String resultMsg = label == null ? (threadName + " : " + data) : (threadName + " : "+ label + " : "+ data);
        System.out.println(resultMsg);
    }

    @Override
    public void onError(Throwable throwable) {
        String threadName = Thread.currentThread().getName();
        String resultMsg = label == null ? (threadName + " : Exception=" + throwable) : (threadName + " : "+ label + " : "+ throwable);
        System.out.println(resultMsg);
    }

    @Override
    public void onComplete() {
        String threadName = Thread.currentThread().getName();
        String resultMsg = label == null ? (threadName + " : Complete") : (threadName + " : "+ label + " : Complete");
        System.out.println(resultMsg);
    }
}

[결과]

RxComputationThreadPool-1 : 0
RxComputationThreadPool-1 : Complete