| 1 | /******************************************************************************* |
| 2 | * Copyright (c) 2009 Ericsson |
| 3 | * |
| 4 | * All rights reserved. This program and the accompanying materials are |
| 5 | * made available under the terms of the Eclipse Public License v1.0 which |
| 6 | * accompanies this distribution, and is available at |
| 7 | * http://www.eclipse.org/legal/epl-v10.html |
| 8 | * |
| 9 | * Contributors: |
| 10 | * Francois Chouinard (fchouinard@gmail.com) - Initial API and implementation |
| 11 | *******************************************************************************/ |
| 12 | |
| 13 | package org.eclipse.linuxtools.lttng.stubs; |
| 14 | |
| 15 | import java.io.FileNotFoundException; |
| 16 | import java.io.IOException; |
| 17 | import java.io.RandomAccessFile; |
| 18 | |
| 19 | import org.eclipse.linuxtools.lttng.core.event.LttngEvent; |
| 20 | import org.eclipse.linuxtools.tmf.core.event.TmfEvent; |
| 21 | import org.eclipse.linuxtools.tmf.core.parser.ITmfEventParser; |
| 22 | import org.eclipse.linuxtools.tmf.core.trace.ITmfLocation; |
| 23 | import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace; |
| 24 | import org.eclipse.linuxtools.tmf.core.trace.TmfContext; |
| 25 | import org.eclipse.linuxtools.tmf.core.trace.TmfLocation; |
| 26 | import org.eclipse.linuxtools.tmf.core.trace.TmfTrace; |
| 27 | |
| 28 | /** |
| 29 | * <b><u>LTTngTraceStub</u></b> |
| 30 | * <p> |
| 31 | * Dummy test trace. Use in conjunction with LTTngEventParserStub. |
| 32 | */ |
| 33 | @SuppressWarnings("nls") |
| 34 | public class LTTngTraceStub extends TmfTrace<LttngEvent> { |
| 35 | |
| 36 | // ======================================================================== |
| 37 | // Attributes |
| 38 | // ======================================================================== |
| 39 | |
| 40 | // The actual stream |
| 41 | private final RandomAccessFile fTrace; |
| 42 | |
| 43 | // The associated event parser |
| 44 | private final ITmfEventParser fParser; |
| 45 | |
| 46 | // ======================================================================== |
| 47 | // Constructors |
| 48 | // ======================================================================== |
| 49 | |
| 50 | /** |
| 51 | * @param filename |
| 52 | * @param parser |
| 53 | * @throws FileNotFoundException |
| 54 | */ |
| 55 | public LTTngTraceStub(String filename) throws FileNotFoundException { |
| 56 | this(filename, DEFAULT_INDEX_PAGE_SIZE); |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * @param filename |
| 61 | * @param parser |
| 62 | * @param cacheSize |
| 63 | * @throws FileNotFoundException |
| 64 | */ |
| 65 | public LTTngTraceStub(String filename, int cacheSize) throws FileNotFoundException { |
| 66 | super(filename, LttngEvent.class, filename, cacheSize); |
| 67 | fTrace = new RandomAccessFile(filename, "r"); |
| 68 | fParser = new LTTngEventParserStub(); |
| 69 | // indexTrace(true); |
| 70 | } |
| 71 | |
| 72 | @Override |
| 73 | public ITmfTrace<LttngEvent> copy() { |
| 74 | ITmfTrace<LttngEvent> returnedValue = null; |
| 75 | try { |
| 76 | returnedValue = new LTTngTraceStub(this.getName()); |
| 77 | } |
| 78 | catch (FileNotFoundException e) { |
| 79 | e.printStackTrace(); |
| 80 | } |
| 81 | return returnedValue; |
| 82 | } |
| 83 | |
| 84 | // ======================================================================== |
| 85 | // Accessors |
| 86 | // ======================================================================== |
| 87 | |
| 88 | public RandomAccessFile getStream() { |
| 89 | return fTrace; |
| 90 | } |
| 91 | |
| 92 | // ======================================================================== |
| 93 | // Operators |
| 94 | // ======================================================================== |
| 95 | |
| 96 | /* (non-Javadoc) |
| 97 | * @see org.eclipse.linuxtools.tmf.eventlog.ITmfStreamLocator#seekLocation(java.lang.Object) |
| 98 | */ |
| 99 | @Override |
| 100 | @SuppressWarnings("unchecked") |
| 101 | public TmfContext seekLocation(ITmfLocation<?> location) { |
| 102 | TmfContext context = null; |
| 103 | try { |
| 104 | synchronized(fTrace) { |
| 105 | fTrace.seek((location != null) ? ((TmfLocation<Long>) location).getLocation() : 0); |
| 106 | context = new TmfContext(getCurrentLocation(), 0); |
| 107 | // TmfTraceContext context2 = new TmfTraceContext(getCurrentLocation(), 0); |
| 108 | // TmfEvent event = parseEvent(context2); |
| 109 | // context.setTimestamp(event.getTimestamp()); |
| 110 | } |
| 111 | } catch (IOException e) { |
| 112 | // TODO Auto-generated catch block |
| 113 | e.printStackTrace(); |
| 114 | } |
| 115 | return context; |
| 116 | } |
| 117 | |
| 118 | @Override |
| 119 | public TmfContext seekLocation(double ratio) { |
| 120 | // TODO Auto-generated method stub |
| 121 | return null; |
| 122 | } |
| 123 | |
| 124 | @Override |
| 125 | public double getLocationRatio(ITmfLocation<?> location) { |
| 126 | // TODO Auto-generated method stub |
| 127 | return 0; |
| 128 | } |
| 129 | |
| 130 | /* (non-Javadoc) |
| 131 | * @see org.eclipse.linuxtools.tmf.eventlog.ITmfStreamLocator#getCurrentLocation() |
| 132 | */ |
| 133 | @Override |
| 134 | public ITmfLocation<?> getCurrentLocation() { |
| 135 | try { |
| 136 | return new TmfLocation<Long>(fTrace.getFilePointer()); |
| 137 | } catch (IOException e) { |
| 138 | // TODO Auto-generated catch block |
| 139 | e.printStackTrace(); |
| 140 | } |
| 141 | return null; |
| 142 | } |
| 143 | |
| 144 | /* (non-Javadoc) |
| 145 | * @see org.eclipse.linuxtools.tmf.trace.ITmfTrace#parseEvent() |
| 146 | */ |
| 147 | @Override |
| 148 | public TmfEvent parseEvent(TmfContext context) { |
| 149 | try { |
| 150 | // paserNextEvent updates the context |
| 151 | TmfEvent event = fParser.parseNextEvent(this, context); |
| 152 | // if (event != null) { |
| 153 | // context.setTimestamp(event.getTimestamp()); |
| 154 | // } |
| 155 | return event; |
| 156 | } |
| 157 | catch (IOException e) { |
| 158 | e.printStackTrace(); |
| 159 | } |
| 160 | return null; |
| 161 | } |
| 162 | |
| 163 | /* (non-Javadoc) |
| 164 | * @see java.lang.Object#toString() |
| 165 | */ |
| 166 | @Override |
| 167 | public String toString() { |
| 168 | return "[LTTngTraceStub]"; |
| 169 | } |
| 170 | |
| 171 | // // ======================================================================== |
| 172 | // // Helper functions |
| 173 | // // ======================================================================== |
| 174 | // |
| 175 | // /* (non-Javadoc) |
| 176 | // * @see org.eclipse.linuxtools.tmf.eventlog.ITmfEventStream#getAttributes() |
| 177 | // */ |
| 178 | // public Map<String, Object> getAttributes() { |
| 179 | // // TODO Auto-generated method stub |
| 180 | // return null; |
| 181 | // } |
| 182 | |
| 183 | } |