2 * Copyright (C) 2016 - EfficiOS Inc., Alexandre Montplaisir <alexmonthy@efficios.com>
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.
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
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
18 package org
.lttng
.ust
.agent
.client
;
20 import java
.nio
.ByteBuffer
;
21 import java
.nio
.ByteOrder
;
24 * Session daemon command indicating to the Java agent that an
25 * application-specific context was enabled in the tracing session.
27 * @author Alexandre Montplaisir
29 class SessiondEnableAppContextCommand
extends SessiondCommand
{
31 private final String retrieverName
;
32 private final String contextName
;
34 private final boolean commandIsValid
;
36 public SessiondEnableAppContextCommand(byte[] data
) {
38 throw new IllegalArgumentException();
40 ByteBuffer buf
= ByteBuffer
.wrap(data
);
41 buf
.order(ByteOrder
.BIG_ENDIAN
);
44 * The buffer contains the retriever name first, followed by the
47 retrieverName
= readNextString(buf
);
48 contextName
= readNextString(buf
);
50 /* If any of these strings were null then the command was invalid */
51 commandIsValid
= ((retrieverName
!= null) && (contextName
!= null));
55 public LttngAgentResponse
execute(ILttngTcpClientListener agent
) {
56 if (!commandIsValid
) {
57 return LttngAgentResponse
.FAILURE_RESPONSE
;
60 boolean success
= agent
.appContextEnabled(retrieverName
, contextName
);
61 return (success ? LttngAgentResponse
.SUCESS_RESPONSE
: LttngAgentResponse
.FAILURE_RESPONSE
);