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d60dfbe4 AM |
1 | /* |
2 | * Copyright (C) 2013 - David Goulet <dgoulet@efficios.com> | |
3 | * | |
4 | * This library is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU Lesser General Public License, version 2.1 only, | |
6 | * as published by the Free Software Foundation. | |
7 | * | |
8 | * This library is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License | |
11 | * for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU Lesser General Public License | |
14 | * along with this library; if not, write to the Free Software Foundation, | |
15 | * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
16 | */ | |
17 | ||
18 | package org.lttng.ust.agent.client; | |
19 | ||
20 | import java.nio.ByteBuffer; | |
21 | import java.nio.ByteOrder; | |
22 | ||
23 | class SessiondHeaderCommand implements ISessiondCommand { | |
24 | ||
25 | /** ABI size of command header. */ | |
26 | public static final int HEADER_SIZE = 16; | |
27 | ||
28 | /** Payload size in bytes following this header. */ | |
29 | private long dataSize; | |
30 | /** Command type. */ | |
31 | private LttngAgentCommand cmd; | |
32 | ||
33 | @Override | |
34 | public void populate(byte[] data) { | |
35 | ByteBuffer buf = ByteBuffer.wrap(data); | |
36 | buf.order(ByteOrder.BIG_ENDIAN); | |
37 | ||
38 | dataSize = buf.getLong(); | |
39 | cmd = LttngAgentCommand.values()[buf.getInt() - 1]; | |
40 | buf.getInt(); // command version, currently unused | |
41 | } | |
42 | ||
43 | public long getDataSize() { | |
44 | return dataSize; | |
45 | } | |
46 | ||
47 | public LttngAgentCommand getCommandType() { | |
48 | return cmd; | |
49 | } | |
50 | } |