/*
* Copyright (c) 2011,2013 Big Switch Networks, Inc.
*
* Licensed under the Eclipse Public License, Version 1.0 (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.eclipse.org/legal/epl-v10.html
*
* 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.
*
* This file incorporates work covered by the following copyright and
* permission notice:
*
* 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 org.sdnplatform.counter;
import java.util.Arrays;
import java.util.Date;
import org.sdnplatform.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;
}
}