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6040f86c ASL |
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.event.LttngEvent; | |
20 | import org.eclipse.linuxtools.tmf.event.TmfEvent; | |
21 | import org.eclipse.linuxtools.tmf.parser.ITmfEventParser; | |
9f584e4c | 22 | import org.eclipse.linuxtools.tmf.trace.ITmfLocation; |
aa9d027b | 23 | import org.eclipse.linuxtools.tmf.trace.ITmfTrace; |
9f584e4c FC |
24 | import org.eclipse.linuxtools.tmf.trace.TmfContext; |
25 | import org.eclipse.linuxtools.tmf.trace.TmfLocation; | |
6040f86c ASL |
26 | import org.eclipse.linuxtools.tmf.trace.TmfTrace; |
27 | ||
28 | /** | |
29 | * <b><u>LTTngTraceStub</u></b> | |
30 | * <p> | |
31 | * Dummy test trace. Use in conjunction with LTTngEventParserStub. | |
32 | */ | |
33 | public class LTTngTraceStub extends TmfTrace<LttngEvent> { | |
34 | ||
35 | // ======================================================================== | |
36 | // Attributes | |
37 | // ======================================================================== | |
38 | ||
39 | // The actual stream | |
40 | private final RandomAccessFile fTrace; | |
41 | ||
42 | // The associated event parser | |
43 | private final ITmfEventParser fParser; | |
44 | ||
45 | // ======================================================================== | |
46 | // Constructors | |
47 | // ======================================================================== | |
48 | ||
49 | /** | |
50 | * @param filename | |
51 | * @param parser | |
52 | * @throws FileNotFoundException | |
53 | */ | |
54 | public LTTngTraceStub(String filename) throws FileNotFoundException { | |
664902f7 | 55 | this(filename, DEFAULT_INDEX_PAGE_SIZE); |
6040f86c ASL |
56 | } |
57 | ||
58 | /** | |
59 | * @param filename | |
60 | * @param parser | |
61 | * @param cacheSize | |
62 | * @throws FileNotFoundException | |
63 | */ | |
64 | public LTTngTraceStub(String filename, int cacheSize) throws FileNotFoundException { | |
ce785d7d | 65 | super(filename, LttngEvent.class, filename, cacheSize); |
6040f86c ASL |
66 | fTrace = new RandomAccessFile(filename, "r"); |
67 | fParser = new LTTngEventParserStub(); | |
550d787e | 68 | // indexTrace(true); |
6040f86c | 69 | } |
aa9d027b WB |
70 | |
71 | public ITmfTrace createTraceCopy() { | |
72 | ITmfTrace returnedValue = null; | |
73 | try { | |
74 | returnedValue = new LTTngTraceStub(this.getName()); | |
75 | } | |
76 | catch (FileNotFoundException e) { | |
77 | e.printStackTrace(); | |
78 | } | |
79 | return returnedValue; | |
80 | } | |
81 | ||
6040f86c ASL |
82 | // ======================================================================== |
83 | // Accessors | |
84 | // ======================================================================== | |
85 | ||
86 | public RandomAccessFile getStream() { | |
87 | return fTrace; | |
88 | } | |
89 | ||
90 | // ======================================================================== | |
91 | // Operators | |
92 | // ======================================================================== | |
93 | ||
94 | /* (non-Javadoc) | |
95 | * @see org.eclipse.linuxtools.tmf.eventlog.ITmfStreamLocator#seekLocation(java.lang.Object) | |
96 | */ | |
452ad365 | 97 | @Override |
9f584e4c | 98 | @SuppressWarnings("unchecked") |
452ad365 | 99 | public TmfContext seekLocation(ITmfLocation<?> location) { |
9f584e4c | 100 | TmfContext context = null; |
6040f86c ASL |
101 | try { |
102 | synchronized(fTrace) { | |
452ad365 | 103 | fTrace.seek((location != null) ? ((TmfLocation<Long>) location).getLocation() : 0); |
9f584e4c | 104 | context = new TmfContext(getCurrentLocation(), 0); |
6040f86c ASL |
105 | // TmfTraceContext context2 = new TmfTraceContext(getCurrentLocation(), 0); |
106 | // TmfEvent event = parseEvent(context2); | |
107 | // context.setTimestamp(event.getTimestamp()); | |
108 | } | |
109 | } catch (IOException e) { | |
110 | // TODO Auto-generated catch block | |
111 | e.printStackTrace(); | |
112 | } | |
113 | return context; | |
114 | } | |
115 | ||
116 | /* (non-Javadoc) | |
117 | * @see org.eclipse.linuxtools.tmf.eventlog.ITmfStreamLocator#getCurrentLocation() | |
118 | */ | |
119 | @Override | |
452ad365 | 120 | public ITmfLocation<?> getCurrentLocation() { |
6040f86c | 121 | try { |
9f584e4c | 122 | return new TmfLocation<Long>(fTrace.getFilePointer()); |
6040f86c ASL |
123 | } catch (IOException e) { |
124 | // TODO Auto-generated catch block | |
125 | e.printStackTrace(); | |
126 | } | |
127 | return null; | |
128 | } | |
129 | ||
130 | /* (non-Javadoc) | |
131 | * @see org.eclipse.linuxtools.tmf.trace.ITmfTrace#parseEvent() | |
132 | */ | |
133 | @Override | |
9f584e4c | 134 | public TmfEvent parseEvent(TmfContext context) { |
6040f86c ASL |
135 | try { |
136 | // paserNextEvent updates the context | |
137 | TmfEvent event = fParser.parseNextEvent(this, context); | |
138 | // if (event != null) { | |
139 | // context.setTimestamp(event.getTimestamp()); | |
140 | // } | |
141 | return event; | |
142 | } | |
143 | catch (IOException e) { | |
144 | e.printStackTrace(); | |
145 | } | |
146 | return null; | |
147 | } | |
148 | ||
149 | /* (non-Javadoc) | |
150 | * @see java.lang.Object#toString() | |
151 | */ | |
152 | @Override | |
153 | public String toString() { | |
154 | return "[LTTngTraceStub]"; | |
155 | } | |
156 | ||
157 | // // ======================================================================== | |
158 | // // Helper functions | |
159 | // // ======================================================================== | |
160 | // | |
161 | // /* (non-Javadoc) | |
162 | // * @see org.eclipse.linuxtools.tmf.eventlog.ITmfEventStream#getAttributes() | |
163 | // */ | |
164 | // public Map<String, Object> getAttributes() { | |
165 | // // TODO Auto-generated method stub | |
166 | // return null; | |
167 | // } | |
168 | ||
169 | } |