Example usage for org.apache.commons.collections.buffer CircularFifoBuffer CircularFifoBuffer

Introduction

In this page you can find the example usage for org.apache.commons.collections.buffer CircularFifoBuffer CircularFifoBuffer.

Prototype

public CircularFifoBuffer(Collection coll)

Source Link

Document

Constructor that creates a buffer from the specified collection.

Usage

From source file:com.shapira.examples.zkconsumer.simplemovingavg.SimpleMovingAvgZkConsumer.java

public static void main(String[] args) {
    if (args.length == 0) {
        System.out//from  www.  j ava 2  s .  c  o m
                .println("SimpleMovingAvgZkConsumer {zookeeper} {group.id} {topic} {window-size} {wait-time}");
        return;
    }

    String next;
    int num;
    SimpleMovingAvgZkConsumer movingAvg = new SimpleMovingAvgZkConsumer();
    String zkUrl = args[0];
    String groupId = args[1];
    String topic = args[2];
    int window = Integer.parseInt(args[3]);
    movingAvg.waitTime = args[4];

    CircularFifoBuffer buffer = new CircularFifoBuffer(window);

    movingAvg.configure(zkUrl, groupId);

    movingAvg.start(topic);

    while ((next = movingAvg.getNextMessage()) != null) {
        int sum = 0;

        try {
            num = Integer.parseInt(next);
            buffer.add(num);
        } catch (NumberFormatException e) {
            // just ignore strings
        }

        for (Object o : buffer) {
            sum += (Integer) o;
        }

        if (buffer.size() > 0) {
            System.out.println("Moving avg is: " + (sum / buffer.size()));
        }

        // uncomment if you wish to commit offsets on every message
        // movingAvg.consumer.commitOffsets();

    }

    movingAvg.consumer.shutdown();
    System.exit(0);

}

From source file:com.carrotgarden.nexus.aws.s3.publish.metrics.WatchQueueGuage.java

public WatchQueueGuage(final int size) {
    this.size = size;
    this.buffer = new CircularFifoBuffer(size);
}

From source file:gda.gui.text.TextArea.ThreadSafeRingBuffer.java

public ThreadSafeRingBuffer(int capacity) {
    this.buffer = new CircularFifoBuffer(capacity);
}

From source file:com.intuit.cto.selfservice.service.RollingLogOutputStream.java

@SuppressWarnings("unchecked")
RollingLogOutputStream(int maxLines) {
    ringBuffer = new CircularFifoBuffer(maxLines);
}

From source file:com.github.tomakehurst.wiremock.verification.journal.BoundedInMemoryRequestJournal.java

public BoundedInMemoryRequestJournal(int capacity) {
    requests = new CircularFifoBuffer(capacity);
}

From source file:be.ugent.tiwi.sleroux.newsrec.newsreclib.newsFetch.storm.bolts.trendDetect.NthLastModifiedTimeTracker.java

/**
 *
 * @param numTimesToTrack//  w  w  w  .  ja  v a 2s  .  co m
 */
public NthLastModifiedTimeTracker(int numTimesToTrack) {
    if (numTimesToTrack < 1) {
        throw new IllegalArgumentException(
                "numTimesToTrack must be greater than zero (you requested " + numTimesToTrack + ")");
    }
    lastModifiedTimesMillis = new CircularFifoBuffer(numTimesToTrack);
    initLastModifiedTimesMillis();
}

From source file:chen.guo.X.storm.example.tools.NthLastModifiedTimeTracker.java

public NthLastModifiedTimeTracker(int numTimesToTrack) {
    if (numTimesToTrack < 1) {
        throw new IllegalArgumentException(
                "numTimesToTrack must be greater than zero (you requested " + numTimesToTrack + ")");
    }/*from   w  w w .j  a v a 2s.c  o  m*/
    lastModifiedTimesMillis = new CircularFifoBuffer(numTimesToTrack);
    long nowCached = Time.currentTimeMillis();
    for (int i = 0; i < lastModifiedTimesMillis.maxSize(); i++) {
        lastModifiedTimesMillis.add(nowCached);
    }
}

From source file:ca.phon.app.log.LogHandler.java

public LogHandler() {
    super();
    logBuffer = new CircularFifoBuffer(DEFAULT_BUFFER_SIZE);
    instanceRef.set(this);
}

From source file:com.linkedin.databus.core.DbusLogAccumulator.java

public DbusLogAccumulator(int maxNumberMsgs) {
    _msgs = new CircularFifoBuffer(maxNumberMsgs);
    reset();
}

From source file:com.neoris.storm.tools.NthLastModifiedTimeTracker.java

public NthLastModifiedTimeTracker(int numTimesToTrack) {
    if (numTimesToTrack < 1) {
        throw new IllegalArgumentException(
                "numTimesToTrack must be greater than zero (you requested " + numTimesToTrack + ")");
    }/*from   www . j  ava2  s . c o  m*/
    lastModifiedTimesMillis = new CircularFifoBuffer(numTimesToTrack);
    initLastModifiedTimesMillis();
}