/** * Copyright 2011, Big Switch Networks, Inc. * Originally created by David Erickson, Stanford University * * 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. **/ package net.floodlightcontroller.counter; import java.util.Arrays; import java.util.Date; import net.floodlightcontroller.counter.ICounter.DateSpan; /** * Simple immutable class to store a series of historic counter values * * This could probably use a re-think... * * @author kyle * */ public class CountSeries { protected long[] counterValues; protected Date startDate; protected DateSpan dateSpan; public CountSeries(Date startDate, DateSpan dateSpan, long[] counterValues) { this.counterValues = counterValues.clone(); this.dateSpan = dateSpan; this.startDate = startDate; } public long[] getSeries() { //synchronized here should lock on 'this', implying that it shares the lock with increment return this.counterValues.clone(); } /** * Returns the startDate of this series. The first long in getSeries represents the sum of deltas from increment calls with dates * that correspond to >= startDate and < startDate + DateSpan. * @return */ public Date getStartDate() {//synchronized here should lock on 'this', implying that it shares the lock with increment return this.startDate; } public String toString() { String ret = "{start: " + this.startDate + ", span: " + this.dateSpan + ", series: " + Arrays.toString(getSeries()) + "}"; return ret; } /** * Return a long that is the number of milliseconds in a ds (second/minute/hour/day/week). (Utility method.) * * @param ds * @return */ public static final long dateSpanToMilliseconds(DateSpan ds) { long delta = 1; switch(ds) { case WEEKS: delta *= 7; case DAYS: delta *= 24; case HOURS: delta *= 60; case MINUTES: delta *= 60; case SECONDS: delta *= 1000; default: break; } return delta; } }