Source Code Cross Referenced for SnapShot.java in  » Profiler » JMeasurement » de » mcs » jmeasurement » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Profiler » JMeasurement » de.mcs.jmeasurement 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * MCS Media Computer Software Copyright (c) 2006 by MCS
003:         * -------------------------------------- Created on 20.03.2006 by w.klaas
004:         * 
005:         * Licensed under the Apache License, Version 2.0 (the "License"); you may not
006:         * use this file except in compliance with the License. You may obtain a copy of
007:         * 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, WITHOUT
013:         * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
014:         * License for the specific language governing permissions and limitations under
015:         * the License.
016:         */
017:        package de.mcs.jmeasurement;
018:
019:        import java.io.IOException;
020:        import java.io.Writer;
021:        import java.text.SimpleDateFormat;
022:        import java.util.ArrayList;
023:        import java.util.Arrays;
024:        import java.util.Date;
025:        import java.util.HashMap;
026:        import java.util.Iterator;
027:        import java.util.Map;
028:        import java.util.Properties;
029:
030:        import org.xml.sax.SAXException;
031:        import org.xml.sax.helpers.AttributesImpl;
032:
033:        import com.megginson.sax.DataWriter;
034:
035:        import de.mcs.jmeasurement.renderer.MeasureDataRenderer;
036:        import de.mcs.jmeasurement.renderer.MeasureDataRendererColumnHeader;
037:        import de.mcs.jmeasurement.renderer.MeasureDataRendererPage;
038:        import de.mcs.jmeasurement.renderer.MeasureDataRendererSnapshot;
039:
040:        /**
041:         * This class contains all data for a snapshot.
042:         * 
043:         * @author w.klaas
044:         */
045:        public class SnapShot {
046:
047:            /** id of this snapshot. */
048:            private static int count = 0;
049:
050:            /** default size of buffers. */
051:            private static final int BUFFER_SIZE = 1024;
052:
053:            /** free memory of this snapshot. */
054:            private static final String KEY_FREEMEMORY = "freememory";
055:
056:            /** max memory of this snapshot. */
057:            private static final String KEY_MAXMEMORY = "maxmemory";
058:
059:            /** total memory of this snapshot. */
060:            private static final String KEY_TOTALMEMORY = "totalmemory";
061:
062:            /** name of this snapshot. */
063:            private String name;
064:
065:            /** id of this snapshot. */
066:            private int id;
067:
068:            /** date of this snapshot. */
069:            private Date date;
070:
071:            /** all measure points of this snapshot. */
072:            private HashMap<String, MeasurePoint> measurePoints;
073:
074:            /** properties for this snapshot. */
075:            private Properties properties;
076:
077:            /**
078:             * Constructor to create a snapshot with the desired name.
079:             * 
080:             * @param snapshotname
081:             *            name of this snapshot.
082:             */
083:            public SnapShot(final String snapshotname) {
084:                this .name = snapshotname;
085:                properties = new Properties();
086:                measurePoints = new HashMap<String, MeasurePoint>();
087:                initFields();
088:                id = count++;
089:            }
090:
091:            /**
092:             * init fields with values.
093:             */
094:            private void initFields() {
095:                this .date = new Date();
096:                properties.setProperty(KEY_FREEMEMORY, Long.toString(Runtime
097:                        .getRuntime().freeMemory()));
098:                properties.setProperty(KEY_MAXMEMORY, Long.toString(Runtime
099:                        .getRuntime().maxMemory()));
100:                properties.setProperty(KEY_TOTALMEMORY, Long.toString(Runtime
101:                        .getRuntime().totalMemory()));
102:            }
103:
104:            /**
105:             * @return name of the snapshot.
106:             */
107:            public final String getName() {
108:                return name;
109:            }
110:
111:            /**
112:             * @return date of the snapshot.
113:             */
114:            public final Date getDate() {
115:                return (Date) date.clone();
116:            }
117:
118:            /**
119:             * @return free memory of this snapshot.
120:             */
121:            public final long getFreeMemory() {
122:                String mem = properties.getProperty(KEY_FREEMEMORY);
123:                if (mem == null) {
124:                    return 0L;
125:                } else {
126:                    return Long.parseLong(mem);
127:                }
128:            }
129:
130:            /**
131:             * @return max memory of this snapshot.
132:             */
133:            public final long getMaxMemory() {
134:                String mem = properties.getProperty(KEY_MAXMEMORY);
135:                if (mem == null) {
136:                    return 0L;
137:                } else {
138:                    return Long.parseLong(mem);
139:                }
140:            }
141:
142:            /**
143:             * @return total memory of this snapshot.
144:             */
145:            public final long getTotalMemory() {
146:                String mem = properties.getProperty(KEY_TOTALMEMORY);
147:                if (mem == null) {
148:                    return 0L;
149:                } else {
150:                    return Long.parseLong(mem);
151:                }
152:            }
153:
154:            /**
155:             * Now cloning all measurepoints for this snapshot.
156:             * 
157:             * @param orgMeasurePoints
158:             *            map with all measure points
159:             */
160:            @SuppressWarnings("unchecked")
161:            public final void cloneMeasurePoints(
162:                    final Map<String, MeasurePoint> orgMeasurePoints) {
163:                this .measurePoints = new HashMap<String, MeasurePoint>(
164:                        orgMeasurePoints.size());
165:                for (Iterator iter = orgMeasurePoints.entrySet().iterator(); iter
166:                        .hasNext();) {
167:                    Map.Entry<String, MeasurePoint> pointEntry = (Map.Entry<String, MeasurePoint>) iter
168:                            .next();
169:                    MeasurePoint addPoint = pointEntry.getValue();
170:                    measurePoints.put(pointEntry.getKey(), addPoint);
171:                }
172:                // for (Iterator iter = orgMeasurePoints.keySet().iterator(); iter
173:                // .hasNext();) {
174:                // String key = (String) iter.next();
175:                // MeasurePoint point = (MeasurePoint) orgMeasurePoints.get(key);
176:                // MeasurePoint addPoint = (MeasurePoint) point.clone();
177:                // measurePoints.put(key, addPoint);
178:                // }
179:            }
180:
181:            /**
182:             * getting a report for this snapshot.
183:             * 
184:             * @param pointname
185:             *            regular expression to match the point names (or null for all
186:             *            points)
187:             * @param renderer
188:             *            the renderer to use.
189:             * @param priority
190:             *            the priority of points, which has to be added to the report.
191:             * @return String the report
192:             * @throws RendererMustNotBeNullException
193:             *             if something goes wrong
194:             */
195:            public final String getReport(final String pointname,
196:                    final MeasureDataRenderer renderer, final int priority)
197:                    throws RendererMustNotBeNullException {
198:                String regexPointName = pointname;
199:                if (renderer == null) {
200:                    throw new RendererMustNotBeNullException(
201:                            "renderer must not be null");
202:                }
203:                if (null == regexPointName) {
204:                    regexPointName = ".*";
205:                }
206:                MeasurePoint[] points = getMeasurePoints(pointname);
207:
208:                StringBuffer stringBuffer = new StringBuffer(BUFFER_SIZE);
209:                if (renderer instanceof  MeasureDataRendererSnapshot) {
210:                    stringBuffer
211:                            .append(((MeasureDataRendererSnapshot) renderer)
212:                                    .startSnapShot(this ));
213:                }
214:                if (renderer instanceof  MeasureDataRendererPage) {
215:                    stringBuffer.append(((MeasureDataRendererPage) renderer)
216:                            .beginPage());
217:                }
218:
219:                if (renderer instanceof  MeasureDataRendererColumnHeader) {
220:                    stringBuffer
221:                            .append(((MeasureDataRendererColumnHeader) renderer)
222:                                    .getColumnHeaderAsString(new DefaultMeasurePoint(
223:                                            "empty", null)));
224:                }
225:
226:                for (int i = 0; i < points.length; i++) {
227:                    if (points[i].getPriority() >= priority) {
228:                        stringBuffer.append(renderer.getDataAsString(points[i],
229:                                "s" + Integer.toString(id)));
230:                    }
231:                }
232:
233:                if (renderer instanceof  MeasureDataRendererPage) {
234:                    stringBuffer.append(((MeasureDataRendererPage) renderer)
235:                            .endPage());
236:                }
237:                if (renderer instanceof  MeasureDataRendererSnapshot) {
238:                    stringBuffer
239:                            .append(((MeasureDataRendererSnapshot) renderer)
240:                                    .endSnapShot(this ));
241:                }
242:                return stringBuffer.toString();
243:            }
244:
245:            /**
246:             * getting a report for this snapshot.
247:             * 
248:             * @param pointname
249:             *            regular expression to match the point names (or null for all
250:             *            points)
251:             * @param renderer
252:             *            the renderer to use.
253:             * @param priority
254:             *            the priority of points, which has to be added to the report.
255:             * @param output
256:             *            the writer to report to.
257:             * @throws RendererMustNotBeNullException
258:             *             if something goes wrong
259:             * @throws IOException
260:             *             if something goes wrong with the writer IO operation.
261:             */
262:            public final void getReport(final String pointname,
263:                    final MeasureDataRenderer renderer, final int priority,
264:                    final Writer output) throws RendererMustNotBeNullException,
265:                    IOException {
266:                String regexPointName = pointname;
267:                if (renderer == null) {
268:                    throw new RendererMustNotBeNullException(
269:                            "renderer must not be null");
270:                }
271:                if (null == regexPointName) {
272:                    regexPointName = ".*";
273:                }
274:                MeasurePoint[] points = getMeasurePoints(pointname);
275:
276:                if (renderer instanceof  MeasureDataRendererSnapshot) {
277:                    output.write(((MeasureDataRendererSnapshot) renderer)
278:                            .startSnapShot(this ));
279:                }
280:                if (renderer instanceof  MeasureDataRendererPage) {
281:                    output.write(((MeasureDataRendererPage) renderer)
282:                            .beginPage());
283:                }
284:
285:                if (renderer instanceof  MeasureDataRendererColumnHeader) {
286:                    output.write(((MeasureDataRendererColumnHeader) renderer)
287:                            .getColumnHeaderAsString(new DefaultMeasurePoint(
288:                                    "empty", null)));
289:                }
290:
291:                for (int i = 0; i < points.length; i++) {
292:                    if (points[i].getPriority() >= priority) {
293:                        output.write(renderer.getDataAsString(points[i], "s"
294:                                + Integer.toString(id)));
295:                    }
296:                }
297:
298:                if (renderer instanceof  MeasureDataRendererPage) {
299:                    output
300:                            .write(((MeasureDataRendererPage) renderer)
301:                                    .endPage());
302:                }
303:                if (renderer instanceof  MeasureDataRendererSnapshot) {
304:                    output.write(((MeasureDataRendererSnapshot) renderer)
305:                            .endSnapShot(this ));
306:                }
307:            }
308:
309:            /**
310:             * getting an array of measurement points. The pointname is a regular
311:             * expression of the desired points.
312:             * 
313:             * @param pointName
314:             *            regular expression of the desired point names (or null for all
315:             *            points)
316:             * @return MeasurePoint[] the desired MeasurePoints
317:             */
318:            public final MeasurePoint[] getMeasurePoints(final String pointName) {
319:                ArrayList<MeasurePoint> points = new ArrayList<MeasurePoint>();
320:                String regexPointName = pointName;
321:                if (null == regexPointName) {
322:                    regexPointName = ".*";
323:                }
324:                String[] names = (String[]) measurePoints.keySet().toArray(
325:                        new String[0]);
326:                Arrays.sort(names);
327:                for (int i = 0; i < names.length; i++) {
328:                    String string = names[i];
329:                    if (string.matches(regexPointName)) {
330:                        MeasurePoint point = (MeasurePoint) measurePoints
331:                                .get(string);
332:                        points.add(point);
333:                    }
334:                }
335:                return (MeasurePoint[]) points.toArray(new MeasurePoint[0]);
336:            }
337:
338:            /**
339:             * getting the properties ofthis snapshot.
340:             * 
341:             * @return Properties
342:             */
343:            public final Properties getProperties() {
344:                return properties;
345:            }
346:
347:            /**
348:             * Adding a new measurepoint to the point registration.
349:             * 
350:             * @param measurePoint
351:             *            measure point to add
352:             */
353:            public final void register(final MeasurePoint measurePoint) {
354:                // measurePoint.setMeasureDataCallback(measureDataCallback);
355:                measurePoints.put(measurePoint.getName(), measurePoint);
356:            }
357:
358:            /**
359:             * saving this snapshot to an datawriter.
360:             * 
361:             * @param writer
362:             *            the writer uto use.
363:             * @throws SAXException
364:             *             if something goes wrong.
365:             * @throws IOException
366:             *             if something goes wrong.
367:             */
368:            public final void saveToXML(final DataWriter writer)
369:                    throws SAXException, IOException {
370:                AttributesImpl atts;
371:                MeasurePoint[] points;
372:                atts = new AttributesImpl();
373:                atts.addAttribute("", MeasureFactory.XMLATT_NAME, "", "String",
374:                        getName());
375:                atts.addAttribute("", MeasureFactory.XMLATT_CREATED, "",
376:                        "String", new SimpleDateFormat().format(getDate()));
377:                writer.startElement("", MeasureFactory.XMLNODE_SNAPSHOT, "",
378:                        atts);
379:                for (Iterator iterator = properties.keySet().iterator(); iterator
380:                        .hasNext();) {
381:                    String key = (String) iterator.next();
382:                    atts = new AttributesImpl();
383:                    atts.addAttribute("", MeasureFactory.XMLATT_NAME, "",
384:                            "String", key);
385:                    atts.addAttribute("", MeasureFactory.XMLATT_VALUE, "",
386:                            "String", properties.getProperty(key));
387:                    writer.emptyElement("", MeasureFactory.XMLNODE_PROPERTY,
388:                            "", atts);
389:                }
390:                writer.startElement(MeasureFactory.XMLNODE_MEASUREPOINTS);
391:                points = getMeasurePoints(".*");
392:                for (int i = 0; i < points.length; i++) {
393:                    if (points[i] instanceof  DefaultMeasurePoint) {
394:                        ((DefaultMeasurePoint) points[i]).toXML(writer);
395:                    }
396:                }
397:                writer.endElement(MeasureFactory.XMLNODE_MEASUREPOINTS);
398:                writer.endElement(MeasureFactory.XMLNODE_SNAPSHOT);
399:            }
400:        }
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