001 /*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018 package org.apache.commons.monitoring.reporting.web.plugin.report.format;
019
020 import org.apache.commons.monitoring.counters.Counter;
021
022 /**
023 * An enum to acces data from a Counter based on the property name. Can be used to avoid reflection on Counter
024 * implementation when requesting data and undesirable exposure of internals.
025 * <p/>
026 * example :
027 * <p/>
028 * <pre>
029 * String property = httpServletRequest.getParameter( "property" );
030 *
031 * Double data = MetricData.valueOf( property ).value( metric );
032 * </pre>
033 *
034 * @author <a href="mailto:nicolas@apache.org">Nicolas De Loof</a>
035 */
036 public enum MetricData {
037 Hits {
038 @Override
039 public double value(final Counter counter) {
040 return counter.getHits();
041 }
042
043 @Override
044 public boolean isTime() {
045 return false;
046 }
047 },
048 Max {
049 @Override
050 public double value(final Counter counter) {
051 return counter.getMax();
052 }
053
054 @Override
055 public boolean isTime() {
056 return true;
057 }
058 },
059 Mean {
060 @Override
061 public double value(final Counter counter) {
062 return counter.getMean();
063 }
064
065 @Override
066 public boolean isTime() {
067 return true;
068 }
069 },
070 Min {
071 @Override
072 public double value(final Counter counter) {
073 return counter.getMin();
074 }
075
076 @Override
077 public boolean isTime() {
078 return true;
079 }
080 },
081 StandardDeviation {
082 @Override
083 public double value(final Counter counter) {
084 return counter.getStandardDeviation();
085 }
086
087 @Override
088 public boolean isTime() {
089 return false;
090 }
091 },
092 Sum {
093 @Override
094 public double value(final Counter counter) {
095 return counter.getSum();
096 }
097
098 @Override
099 public boolean isTime() {
100 return true;
101 }
102 },
103 SumOfLogs {
104 @Override
105 public double value(final Counter counter) {
106 return counter.getSumOfLogs();
107 }
108
109 @Override
110 public boolean isTime() {
111 return false;
112 }
113 },
114 SumOfSquares {
115 @Override
116 public double value(final Counter counter) {
117 return counter.getSumOfSquares();
118 }
119
120 @Override
121 public boolean isTime() {
122 return false;
123 }
124 },
125 Variance {
126 @Override
127 public double value(final Counter counter) {
128 return counter.getVariance();
129 }
130
131 @Override
132 public boolean isTime() {
133 return false;
134 }
135 },
136 GeometricMean {
137 @Override
138 public double value(final Counter counter) {
139 return counter.getGeometricMean();
140 }
141
142 @Override
143 public boolean isTime() {
144 return false;
145 }
146 },
147 Value {
148 @Override
149 public double value(final Counter counter) {
150 return counter.getSum();
151 }
152
153 @Override
154 public boolean isTime() {
155 return true;
156 }
157 },
158 Concurrency {
159 @Override
160 public double value(final Counter counter) {
161 return counter.currentConcurrency().get();
162 }
163
164 @Override
165 public boolean isTime() {
166 return false;
167 }
168 },
169 MaxConcurrency {
170 @Override
171 public double value(final Counter counter) {
172 return counter.getMaxConcurrency();
173 }
174
175 @Override
176 public boolean isTime() {
177 return false;
178 }
179 };
180
181 public abstract double value(Counter counter);
182 public abstract boolean isTime();
183 }