projects / lttng-ust.git / blame
| Commit | Line | Data |
|---|---|---|
| d60dfbe4 | 1 | /* |
| 301a3ddb | 2 | * Copyright (C) 2015 - EfficiOS Inc., Alexandre Montplaisir <alexmonthy@efficios.com> |
| d60dfbe4 AM |
3 | * Copyright (C) 2013 - David Goulet <dgoulet@efficios.com> |
| 4 | * | |
| 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. | |
| 8 | * | |
| 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 | |
| 12 | * for more details. | |
| 13 | * | |
| 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 | |
| 17 | */ | |
| 18 | ||
| 19 | package org.lttng.ust.agent.client; | |
| 20 | ||
| 21 | import java.nio.ByteBuffer; | |
| 22 | import java.nio.ByteOrder; | |
| 23 | ||
| 24 | import org.lttng.ust.agent.AbstractLttngAgent; | |
| 25 | ||
| 301a3ddb AM |
26 | /** |
| 27 | * Session daemon command indicating to the Java agent that some events were | |
| 28 | * enabled in the tracing session. | |
| 29 | * | |
| 30 | * @author Alexandre Montplaisir | |
| 31 | * @author David Goulet | |
| 32 | */ | |
| 33 | class SessiondEnableEventCommand implements ISessiondCommand { | |
| d60dfbe4 AM |
34 | |
| 35 | private static final int INT_SIZE = 4; | |
| 36 | ||
| 37 | /** Event name to enable in the tracing session */ | |
| 301a3ddb | 38 | private final String eventName; |
| d60dfbe4 | 39 | |
| 301a3ddb AM |
40 | public SessiondEnableEventCommand(byte[] data) { |
| 41 | if (data == null) { | |
| 42 | throw new IllegalArgumentException(); | |
| 43 | } | |
| d60dfbe4 AM |
44 | int dataOffset = INT_SIZE * 2; |
| 45 | ||
| 46 | ByteBuffer buf = ByteBuffer.wrap(data); | |
| 47 | buf.order(ByteOrder.LITTLE_ENDIAN); | |
| 301a3ddb AM |
48 | buf.getInt(); // logLevel, currently unused |
| 49 | buf.getInt(); // logLevelType, currently unused | |
| d60dfbe4 AM |
50 | eventName = new String(data, dataOffset, data.length - dataOffset).trim(); |
| 51 | } | |
| 52 | ||
| 53 | @Override | |
| 301a3ddb AM |
54 | public ILttngAgentResponse execute(AbstractLttngAgent<?> agent) { |
| 55 | boolean success = agent.eventEnabled(this.eventName); | |
| 56 | return (success ? ILttngAgentResponse.SUCESS_RESPONSE : ILttngAgentResponse.FAILURE_RESPONSE); | |
| d60dfbe4 AM |
57 | } |
| 58 | } |