| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license |
| * agreements. See the NOTICE file distributed with this work for additional information regarding |
| * copyright ownership. The ASF licenses this file to You 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.apache.geode.management.internal.beans; |
| |
| |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.geode.annotations.Immutable; |
| |
| |
| /** |
| * This is a utility class to calculate various type of Metrics out of raw stats |
| * |
| * |
| */ |
| public class MetricsCalculator { |
| |
| @Immutable |
| private static final TimeUnit milliSeconds = TimeUnit.MILLISECONDS; |
| |
| private static long toSeconds(long fromTime, long toTime) { |
| return milliSeconds.toSeconds((toTime - fromTime)); |
| } |
| |
| public static float getRate(int Xn, int Xn1, long fromTime, long toTime) { |
| float tempXn = Xn; |
| float tempXn1 = Xn1; |
| long secondsFactor; |
| if (fromTime == 0) { |
| secondsFactor = 0; |
| } else { |
| secondsFactor = toSeconds(fromTime, toTime); |
| } |
| |
| float num = (tempXn1 - tempXn) / ((secondsFactor == 0) ? 1 : secondsFactor); |
| return Round(num, 3); |
| // return num; |
| } |
| |
| public static float getRate(long Xn, long Xn1, long fromTime, long toTime) { |
| float tempXn = Xn; |
| float tempXn1 = Xn1; |
| long secondsFactor; |
| if (fromTime == 0) { |
| secondsFactor = 0; |
| } else { |
| secondsFactor = toSeconds(fromTime, toTime); |
| } |
| float num = (tempXn1 - tempXn) / ((secondsFactor == 0) ? 1 : secondsFactor); |
| return Round(num, 3); |
| // return num; |
| |
| } |
| |
| public static long getLatency(int Xn, int Xn1, long XNTime, long XN1Time) { |
| if ((Xn1 - Xn) != 0) { |
| return (XN1Time - XNTime) / (Xn1 - Xn); |
| } |
| return 0; |
| |
| } |
| |
| public static long getLatency(long Xn, long Xn1, long XNTime, long XN1Time) { |
| if ((Xn1 - Xn) != 0) { |
| return (XN1Time - XNTime) / (Xn1 - Xn); |
| } |
| return 0; |
| } |
| |
| public static long getAverageLatency(int Xn, long XNTime) { |
| if (Xn != 0 && XNTime != 0) { |
| return XNTime / Xn; |
| } |
| return 0; |
| } |
| |
| public static long getAverageLatency(long Xn, long XNTime) { |
| if (Xn != 0 && XNTime != 0) { |
| return XNTime / Xn; |
| } |
| return 0; |
| } |
| |
| // Overloaded getAverage Methods // |
| |
| public static int getAverage(int totalNumber, int size) { |
| if (totalNumber != 0 && size != 0) { |
| return totalNumber / size; |
| } |
| return 0; |
| } |
| |
| public static long getAverage(long totalNumber, int size) { |
| if (totalNumber != 0 && size != 0) { |
| return totalNumber / size; |
| } |
| return 0; |
| } |
| |
| public static float getAverage(float totalNumber, int size) { |
| if (totalNumber != 0 && size != 0) { |
| |
| return totalNumber / size; |
| } |
| return 0; |
| } |
| |
| public static double getAverage(double totalNumber, int size) { |
| if (totalNumber != 0 && size != 0) { |
| |
| return totalNumber / size; |
| } |
| return 0; |
| } |
| |
| public static float Round(float Rval, int Rpl) { |
| float p = (float) Math.pow(10, Rpl); |
| Rval = Rval * p; |
| float tmp = Math.round(Rval); |
| return (float) tmp / p; |
| } |
| |
| |
| |
| } |