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
30 import java.util.concurrent.atomic.AtomicLong;
31 import java.util.Map;
32 import java.lang.reflect.*;
33 import com.sun.org.glassfish.external.statistics.AverageRangeStatistic;
34
35 /**
36 * An implementation of AverageRangeStatistic that provides ways to change the
37 * state externally through mutators. Convenience class that is useful for
38 * components that gather the statistical data.
39 * By merely changing the count (which is a mandatory measurement), rest of the statistical
40 * information could be deduced.
41 */
42
43 public final class AverageRangeStatisticImpl extends StatisticImpl implements
44 AverageRangeStatistic, InvocationHandler {
45
46 private long currentVal = 0L;
47 private long highWaterMark = Long.MIN_VALUE;
48 private long lowWaterMark = Long.MAX_VALUE;
49 private long numberOfSamples = 0L;
50 private long runningTotal = 0L;
122
123 public synchronized void setCurrent(long curVal) {
124 currentVal = curVal;
125 lowWaterMark = (curVal >= lowWaterMark ? lowWaterMark : curVal);
126 highWaterMark = (curVal >= highWaterMark ? curVal : highWaterMark);
127 numberOfSamples++;
128 runningTotal += curVal;
129 sampleTime = System.currentTimeMillis();
130 }
131
132 public synchronized long getHighWaterMark() {
133 return highWaterMark;
134 }
135
136 public synchronized long getLowWaterMark() {
137 return lowWaterMark;
138 }
139
140 // todo: equals implementation
141 public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
142 Object result;
143 try {
144 result = method.invoke(this, args);
145 } catch (InvocationTargetException e) {
146 throw e.getTargetException();
147 } catch (Exception e) {
148 throw new RuntimeException("unexpected invocation exception: " +
149 e.getMessage());
150 } finally {
151 }
152 return result;
153 }
154
155 }
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1 /*
2 * Copyright (c) 2009, 2013, 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
30 import java.util.Map;
31 import java.lang.reflect.*;
32 import com.sun.org.glassfish.external.statistics.AverageRangeStatistic;
33
34 /**
35 * An implementation of AverageRangeStatistic that provides ways to change the
36 * state externally through mutators. Convenience class that is useful for
37 * components that gather the statistical data.
38 * By merely changing the count (which is a mandatory measurement), rest of the statistical
39 * information could be deduced.
40 */
41
42 public final class AverageRangeStatisticImpl extends StatisticImpl implements
43 AverageRangeStatistic, InvocationHandler {
44
45 private long currentVal = 0L;
46 private long highWaterMark = Long.MIN_VALUE;
47 private long lowWaterMark = Long.MAX_VALUE;
48 private long numberOfSamples = 0L;
49 private long runningTotal = 0L;
121
122 public synchronized void setCurrent(long curVal) {
123 currentVal = curVal;
124 lowWaterMark = (curVal >= lowWaterMark ? lowWaterMark : curVal);
125 highWaterMark = (curVal >= highWaterMark ? curVal : highWaterMark);
126 numberOfSamples++;
127 runningTotal += curVal;
128 sampleTime = System.currentTimeMillis();
129 }
130
131 public synchronized long getHighWaterMark() {
132 return highWaterMark;
133 }
134
135 public synchronized long getLowWaterMark() {
136 return lowWaterMark;
137 }
138
139 // todo: equals implementation
140 public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
141 checkMethod(method);
142
143 Object result;
144 try {
145 result = method.invoke(this, args);
146 } catch (InvocationTargetException e) {
147 throw e.getTargetException();
148 } catch (Exception e) {
149 throw new RuntimeException("unexpected invocation exception: " +
150 e.getMessage());
151 }
152 return result;
153 }
154
155 }
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