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1 | /********************************************************************** |
2 | * Copyright (c) 2014 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 | * Matthew Khouzam - Initial implementation and API | |
11 | * Marc-Andre Laperle - Initial implementation and API | |
12 | **********************************************************************/ | |
13 | ||
9bc60be7 | 14 | package org.eclipse.tracecompass.internal.lttng2.control.core.relayd.lttngviewerCommands; |
8e15b929 MK |
15 | |
16 | import java.nio.ByteBuffer; | |
17 | import java.nio.ByteOrder; | |
18 | ||
19 | /** | |
20 | * VIEWER_ATTACH_SESSION payload. | |
21 | * | |
22 | * @author Matthew Khouzam | |
8e15b929 MK |
23 | */ |
24 | public class AttachSessionRequest implements IRelayCommand { | |
25 | ||
26 | /** | |
27 | * Command size | |
28 | * | |
8adfbb73 | 29 | * fSessionId + fOffset + fSeek |
8e15b929 | 30 | */ |
8adfbb73 | 31 | public static final int SIZE = (Long.SIZE + Long.SIZE) / 8 + SeekCommand.SIZE; |
8e15b929 MK |
32 | /** the id of a session */ |
33 | private final long fSessionId; | |
34 | /** unused for now */ | |
35 | private final long fOffset; | |
36 | /** enum lttng_viewer_seek */ | |
37 | private final SeekCommand fSeek; | |
38 | ||
39 | /** | |
40 | * Attach session request constructor | |
41 | * | |
42 | * @param id | |
43 | * the session id | |
44 | * @param seekCommand | |
45 | * the seek command | |
46 | */ | |
47 | public AttachSessionRequest(long id, SeekCommand seekCommand) { | |
48 | this(id, 0, seekCommand); | |
49 | } | |
50 | ||
51 | /** | |
52 | * Attach session request constructor | |
53 | * | |
54 | * @param id | |
55 | * the session id | |
56 | * @param offset | |
57 | * unused for now | |
58 | * @param seekCommand | |
59 | * the seek command | |
60 | */ | |
61 | ||
62 | public AttachSessionRequest(long id, int offset, SeekCommand seekCommand) { | |
63 | fSessionId = id; | |
64 | fOffset = offset; | |
65 | fSeek = seekCommand; | |
66 | ||
67 | } | |
68 | ||
69 | @Override | |
70 | public byte[] serialize() { | |
71 | byte data[] = new byte[SIZE]; | |
72 | ByteBuffer bb = ByteBuffer.wrap(data); | |
73 | bb.order(ByteOrder.BIG_ENDIAN); | |
74 | bb.putLong(fSessionId); | |
75 | bb.putLong(fOffset); | |
76 | bb.putInt(fSeek.getCommand()); | |
77 | return data; | |
78 | } | |
79 | ||
80 | } |