com.inmobi.messaging.publisher.AuditCounterAccumulator.java Source code

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Here is the source code for com.inmobi.messaging.publisher.AuditCounterAccumulator.java

Source

package com.inmobi.messaging.publisher;

/*
 * #%L
 * messaging-client-core
 * %%
 * Copyright (C) 2012 - 2014 InMobi
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */

import java.util.HashMap;
import java.util.Map;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * This class is not thread safe in respect to increments and reset
 * Responsibility is upon the caller
 *
 * @author rohit.kochar
 *
 */
public class AuditCounterAccumulator {
    private static final Log LOG = LogFactory.getLog(AuditCounterAccumulator.class);
    private Counters counters = new Counters(new HashMap<Long, Long>(), new HashMap<Long, Long>());
    private int windowSize;

    class Counters {
        private HashMap<Long, Long> received;
        private HashMap<Long, Long> sent;

        public Map<Long, Long> getReceived() {
            return received;
        }

        public Map<Long, Long> getSent() {
            return sent;
        }

        Counters(HashMap<Long, Long> received, HashMap<Long, Long> sent) {
            this.received = received;
            this.sent = sent;
        }
    }

    AuditCounterAccumulator(int windowSize) {

        this.windowSize = windowSize;
    }

    private Long getWindow(Long timestamp) {
        Long window = timestamp - (timestamp % (windowSize * 1000));
        return window;
    }

    void incrementReceived(Long timestamp) {
        Long window = getWindow(timestamp);
        if (!counters.received.containsKey(window)) {
            counters.received.put(window, Long.valueOf(0));
        }
        counters.received.put(window, counters.received.get(window) + 1);
    }

    void incrementSent(Long timestamp) {
        Long window = getWindow(timestamp);
        if (!counters.sent.containsKey(window)) {
            counters.sent.put(window, Long.valueOf(0));
        }
        counters.sent.put(window, counters.sent.get(window) + 1);

    }

    Counters getAndReset() {
        Counters returnValue;
        returnValue = new Counters(counters.received, counters.sent);
        counters.received = new HashMap<Long, Long>();
        counters.sent = new HashMap<Long, Long>();
        return returnValue;
    }
}