1 /*
   2  * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 
  27 
  28 package com.sun.org.glassfish.external.statistics.impl;
  29 import com.sun.org.glassfish.external.statistics.BoundaryStatistic;
  30 import java.util.concurrent.atomic.AtomicLong;
  31 import java.util.Map;
  32 import java.lang.reflect.*;
  33 
  34 /**
  35  * @author Sreenivas Munnangi
  36  */
  37 public final class BoundaryStatisticImpl extends StatisticImpl
  38     implements BoundaryStatistic, InvocationHandler {
  39 
  40     private final long lowerBound;
  41     private final long upperBound;
  42 
  43     private final BoundaryStatistic bs =
  44             (BoundaryStatistic) Proxy.newProxyInstance(
  45             BoundaryStatistic.class.getClassLoader(),
  46             new Class[] { BoundaryStatistic.class },
  47             this);
  48 
  49     public BoundaryStatisticImpl(long lower, long upper, String name,
  50                                  String unit, String desc, long startTime,
  51                                  long sampleTime) {
  52         super(name, unit, desc, startTime, sampleTime);
  53         upperBound = upper;
  54         lowerBound = lower;
  55     }
  56 
  57     public synchronized BoundaryStatistic getStatistic() {
  58         return bs;
  59     }
  60 
  61     public synchronized Map getStaticAsMap() {
  62         Map m = super.getStaticAsMap();
  63         m.put("lowerbound", getLowerBound());
  64         m.put("upperbound", getUpperBound());
  65         return m;
  66     }
  67 
  68     public synchronized long getLowerBound() {
  69         return lowerBound;
  70     }
  71 
  72     public synchronized long getUpperBound() {
  73         return upperBound;
  74     }
  75 
  76     @Override
  77     public synchronized void reset() {
  78         super.reset();
  79         sampleTime = -1L;
  80     }
  81 
  82     // todo: equals implementation
  83     public Object invoke(Object proxy, Method m, Object[] args) throws Throwable {
  84         Object result;
  85         try {
  86             result = m.invoke(this, args);
  87         } catch (InvocationTargetException e) {
  88             throw e.getTargetException();
  89         } catch (Exception e) {
  90             throw new RuntimeException("unexpected invocation exception: " +
  91                        e.getMessage());
  92         } finally {
  93         }
  94         return result;
  95     }
  96 }