[305] | 1 | package de.ugoe.cs.eventbench.jfc;
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[299] | 2 |
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[389] | 3 | import java.awt.event.FocusEvent;
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[369] | 4 | import java.awt.event.MouseEvent;
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[299] | 5 | import java.io.File;
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| 6 | import java.io.FileInputStream;
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| 7 | import java.io.FileNotFoundException;
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| 8 | import java.io.IOException;
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| 9 | import java.io.InputStreamReader;
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| 10 | import java.io.UnsupportedEncodingException;
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| 11 | import java.security.InvalidParameterException;
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| 12 | import java.util.Collection;
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[369] | 13 | import java.util.HashSet;
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[300] | 14 | import java.util.LinkedList;
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[299] | 15 | import java.util.List;
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| 16 |
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| 17 | import javax.xml.parsers.ParserConfigurationException;
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| 18 | import javax.xml.parsers.SAXParser;
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| 19 | import javax.xml.parsers.SAXParserFactory;
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| 20 |
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| 21 | import org.xml.sax.Attributes;
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| 22 | import org.xml.sax.InputSource;
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| 23 | import org.xml.sax.SAXException;
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| 24 | import org.xml.sax.SAXParseException;
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| 25 | import org.xml.sax.helpers.DefaultHandler;
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| 26 |
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[305] | 27 | import de.ugoe.cs.eventbench.jfc.data.JFCEvent;
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[299] | 28 | import de.ugoe.cs.util.console.Console;
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| 29 |
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| 30 | /**
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| 31 | * <p>
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| 32 | * This class provides functionality to parse XML log files generated by the
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| 33 | * JFCMonitor of EventBench. The result of parsing a file is a collection of
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| 34 | * event sequences.
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| 35 | * </p>
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| 36 | *
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| 37 | * @author Steffen Herbold
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| 38 | * @version 1.0
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| 39 | */
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| 40 | public class JFCLogParser extends DefaultHandler {
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| 41 |
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| 42 | /**
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| 43 | * <p>
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| 44 | * Collection of event sequences that is contained in the log file, which is
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| 45 | * parsed.
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| 46 | * </p>
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| 47 | */
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[300] | 48 | private Collection<List<JFCEvent>> sequences;
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[299] | 49 |
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| 50 | /**
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| 51 | * <p>
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[300] | 52 | * Internal handle to the event that is currently being parsed.
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| 53 | * </p>
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| 54 | */
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| 55 | private JFCEvent currentEvent;
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| 56 |
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| 57 | /**
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| 58 | * <p>
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| 59 | * Internal handle to the event sequence that is currently being parsed.
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| 60 | * </p>
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| 61 | */
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| 62 | private List<JFCEvent> currentSequence = null;
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[369] | 63 |
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[359] | 64 | /**
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| 65 | * <p>
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| 66 | * Internally used string to build a string representing a component-node.
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| 67 | * </p>
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| 68 | */
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| 69 | private String componentString;
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[300] | 70 |
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| 71 | /**
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| 72 | * <p>
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| 73 | * Enumeration to differentiate if a parameter belongs to an event, a source
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| 74 | * or the parent of a source.
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| 75 | * </p>
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| 76 | *
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| 77 | * @author Steffen Herbold
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| 78 | * @version 1.0
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| 79 | */
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| 80 | private enum ParamSource {
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[359] | 81 | EVENT, SOURCE, PARENT, COMPONENT
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[300] | 82 | };
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| 83 |
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| 84 | /**
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| 85 | * <p>
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| 86 | * Specifies whether the parameters that are currently being read belong the
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| 87 | * the event, the source or the parent.
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| 88 | * </p>
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| 89 | */
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| 90 | ParamSource paramSource = null;
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| 91 |
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[369] | 92 | private Collection<Integer> eventFilter;
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| 93 |
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[300] | 94 | /**
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| 95 | * <p>
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[301] | 96 | * Constructor. Creates a new JFCLogParser.
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| 97 | * </p>
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| 98 | */
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| 99 | public JFCLogParser() {
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| 100 | sequences = new LinkedList<List<JFCEvent>>();
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[317] | 101 | currentSequence = new LinkedList<JFCEvent>();
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[369] | 102 | setupEventFilter();
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[301] | 103 | }
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| 104 |
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[369] | 105 | private void setupEventFilter() {
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| 106 | eventFilter = new HashSet<Integer>();
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| 107 | eventFilter.add(MouseEvent.MOUSE_PRESSED);
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| 108 | eventFilter.add(MouseEvent.MOUSE_RELEASED);
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[389] | 109 | eventFilter.add(FocusEvent.FOCUS_GAINED);
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[369] | 110 | }
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| 111 |
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[301] | 112 | /**
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| 113 | * <p>
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[299] | 114 | * Returns the collection of event sequences that is obtained from parsing
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| 115 | * log files.
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| 116 | * </p>
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| 117 | *
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| 118 | * @return collection of event sequences
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| 119 | */
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| 120 | public Collection<List<JFCEvent>> getSequences() {
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| 121 | return sequences;
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| 122 | }
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| 123 |
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| 124 | /*
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| 125 | * (non-Javadoc)
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| 126 | *
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| 127 | * @see org.xml.sax.helpers.DefaultHandler#startElement(java.lang.String,
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| 128 | * java.lang.String, java.lang.String, org.xml.sax.Attributes)
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| 129 | */
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| 130 | public void startElement(String uri, String localName, String qName,
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| 131 | Attributes atts) throws SAXException {
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[369] | 132 | if (qName.equals("sessions")) {
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[353] | 133 | currentSequence = new LinkedList<JFCEvent>();
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| 134 | }
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[299] | 135 | if (qName.equals("newsession")) {
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| 136 | Console.traceln("start of session");
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[317] | 137 | if (currentSequence != null && !currentSequence.isEmpty()) {
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[300] | 138 | sequences.add(currentSequence);
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| 139 | }
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[353] | 140 | currentSequence = new LinkedList<JFCEvent>();
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[299] | 141 | } else if (qName.equals("event")) {
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[369] | 142 | int eventId = Integer.parseInt(atts.getValue("id"));
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| 143 | if (!eventFilter.contains(eventId)) {
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| 144 | currentEvent = new JFCEvent(atts.getValue("id"));
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| 145 | paramSource = ParamSource.EVENT;
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[300] | 146 | }
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[369] | 147 | } else if (currentEvent != null) {
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| 148 | if (qName.equals("param")) {
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| 149 | if (paramSource == ParamSource.EVENT) {
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| 150 | currentEvent.addParameter(atts.getValue("name"),
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| 151 | atts.getValue("value"));
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| 152 | } else if (paramSource == ParamSource.SOURCE) {
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| 153 | currentEvent.addSourceInformation(atts.getValue("name"),
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| 154 | atts.getValue("value"));
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| 155 | } else if (paramSource == ParamSource.PARENT) {
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| 156 | currentEvent.addParentInformation(atts.getValue("name"),
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| 157 | atts.getValue("value"));
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| 158 | } else if (paramSource == ParamSource.COMPONENT) {
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| 159 | componentString += "'" + atts.getValue("value") + "',";
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| 160 | }
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| 161 | } else if (qName.equals("source")) {
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| 162 | paramSource = ParamSource.SOURCE;
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| 163 | } else if (qName.equals("parent")) {
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| 164 | paramSource = ParamSource.PARENT;
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| 165 | } else if (qName.equals("component")) {
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| 166 | paramSource = ParamSource.COMPONENT;
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| 167 | componentString = "[";
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| 168 | }
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[299] | 169 | }
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| 170 | }
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| 171 |
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| 172 | /*
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| 173 | * (non-Javadoc)
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| 174 | *
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| 175 | * @see org.xml.sax.helpers.DefaultHandler#endElement(java.lang.String,
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| 176 | * java.lang.String, java.lang.String)
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| 177 | */
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| 178 | @Override
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| 179 | public void endElement(String uri, String localName, String qName)
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| 180 | throws SAXException {
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[369] | 181 | if (qName.equals("sessions")) {
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| 182 | if (currentSequence != null && !currentSequence.isEmpty()) {
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[317] | 183 | sequences.add(currentSequence);
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| 184 | }
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[353] | 185 | currentSequence = null;
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[369] | 186 | } else if (currentEvent != null) {
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| 187 | if (qName.equals("event")) {
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| 188 | currentSequence.add(currentEvent);
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| 189 | currentEvent = null;
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| 190 | } else if (qName.equals("source")) {
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| 191 | paramSource = ParamSource.EVENT;
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| 192 | } else if (qName.equals("parent")) {
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| 193 | paramSource = ParamSource.SOURCE;
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| 194 | } else if (qName.equals("component")) {
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| 195 | paramSource.equals(ParamSource.SOURCE);
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| 196 | currentEvent.extendTarget(componentString.substring(0,
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| 197 | componentString.length() - 1) + "]");
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| 198 | }
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[299] | 199 | }
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| 200 | }
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| 201 |
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| 202 | /**
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| 203 | * <p>
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| 204 | * Parses a log file written by the JFCMonitor and creates a collection of
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| 205 | * event sequences.
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| 206 | * </p>
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| 207 | *
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| 208 | * @param filename
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| 209 | * name and path of the log file
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| 210 | */
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| 211 | public void parseFile(String filename) {
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| 212 | if (filename == null) {
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| 213 | throw new InvalidParameterException("filename must not be null");
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| 214 | }
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| 215 |
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| 216 | SAXParserFactory spf = SAXParserFactory.newInstance();
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| 217 | spf.setValidating(true);
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| 218 |
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| 219 | SAXParser saxParser = null;
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| 220 | InputSource inputSource = null;
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| 221 | try {
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| 222 | saxParser = spf.newSAXParser();
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| 223 | inputSource = new InputSource(new InputStreamReader(
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[392] | 224 | new FileInputStream(filename), "UTF-8"));
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[299] | 225 | } catch (UnsupportedEncodingException e) {
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| 226 | e.printStackTrace();
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| 227 | } catch (ParserConfigurationException e) {
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| 228 | e.printStackTrace();
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| 229 | } catch (SAXException e) {
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| 230 | e.printStackTrace();
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| 231 | } catch (FileNotFoundException e) {
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| 232 | e.printStackTrace();
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| 233 | }
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| 234 | if (inputSource != null) {
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| 235 | inputSource.setSystemId("file://"
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| 236 | + new File(filename).getAbsolutePath());
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| 237 | try {
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| 238 | if (saxParser == null) {
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| 239 | throw new RuntimeException("SAXParser creation failed");
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| 240 | }
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| 241 | saxParser.parse(inputSource, this);
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| 242 | } catch (SAXParseException e) {
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| 243 | Console.printerrln("Failure parsing file in line "
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| 244 | + e.getLineNumber() + ", column " + e.getColumnNumber()
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| 245 | + ".");
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| 246 | e.printStackTrace();
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| 247 | } catch (SAXException e) {
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| 248 | e.printStackTrace();
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| 249 | } catch (IOException e) {
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| 250 | e.printStackTrace();
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| 251 | }
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| 252 | }
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| 253 | }
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| 254 |
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| 255 | }
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