2 * Copyright (C) 2015 - EfficiOS Inc., Alexandre Montplaisir <alexmonthy@efficios.com>
3 * Copyright (C) 2013 - David Goulet <dgoulet@efficios.com>
5 * This library is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU Lesser General Public License, version 2.1 only,
7 * as published by the Free Software Foundation.
9 * This library is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
14 * You should have received a copy of the GNU Lesser General Public License
15 * along with this library; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 package org
.lttng
.ust
.agent
.client
;
21 import java
.nio
.ByteBuffer
;
22 import java
.nio
.ByteOrder
;
25 * Session daemon command indicating to the Java agent that some events were
26 * enabled in the tracing session.
28 * @author Alexandre Montplaisir
29 * @author David Goulet
31 class SessiondEnableEventCommand
implements ISessiondCommand
{
33 private static final int INT_SIZE
= 4;
35 /** Event name to enable in the tracing session */
36 private final String eventName
;
38 public SessiondEnableEventCommand(byte[] data
) {
40 throw new IllegalArgumentException();
42 int dataOffset
= INT_SIZE
* 2;
44 ByteBuffer buf
= ByteBuffer
.wrap(data
);
45 buf
.order(ByteOrder
.LITTLE_ENDIAN
);
46 buf
.getInt(); // logLevel, currently unused
47 buf
.getInt(); // logLevelType, currently unused
48 eventName
= new String(data
, dataOffset
, data
.length
- dataOffset
).trim();
52 public LttngAgentResponse
execute(ILttngTcpClientListener agent
) {
53 boolean success
= agent
.eventEnabled(this.eventName
);
54 return (success ? LttngAgentResponse
.SUCESS_RESPONSE
: LttngAgentResponse
.FAILURE_RESPONSE
);