| 1 | /* |
| 2 | * SPDX-License-Identifier: LGPL-2.1-only |
| 3 | * |
| 4 | * Copyright (C) 2015 EfficiOS Inc. |
| 5 | * Copyright (C) 2015 Alexandre Montplaisir <alexmonthy@efficios.com> |
| 6 | * Copyright (C) 2013 David Goulet <dgoulet@efficios.com> |
| 7 | */ |
| 8 | |
| 9 | package org.lttng.ust.agent.client; |
| 10 | |
| 11 | import java.nio.ByteBuffer; |
| 12 | import java.nio.ByteOrder; |
| 13 | |
| 14 | /** |
| 15 | * Session daemon command indicating to the Java agent that some events were |
| 16 | * disabled in the tracing session. |
| 17 | * |
| 18 | * @author Alexandre Montplaisir |
| 19 | * @author David Goulet |
| 20 | */ |
| 21 | class SessiondDisableEventCommand extends SessiondCommand { |
| 22 | |
| 23 | /** |
| 24 | * Response sent when the disable-event command asks to disable an |
| 25 | * unknown event. |
| 26 | */ |
| 27 | private static final LttngAgentResponse DISABLE_EVENT_FAILURE_RESPONSE = new LttngAgentResponse() { |
| 28 | @Override |
| 29 | public ReturnCode getReturnCode() { |
| 30 | return ReturnCode.CODE_UNKNOWN_LOGGER_NAME; |
| 31 | } |
| 32 | }; |
| 33 | |
| 34 | /** Event name to disable from the tracing session */ |
| 35 | private final String eventName; |
| 36 | |
| 37 | public SessiondDisableEventCommand(byte[] data) { |
| 38 | if (data == null) { |
| 39 | throw new IllegalArgumentException(); |
| 40 | } |
| 41 | ByteBuffer buf = ByteBuffer.wrap(data); |
| 42 | buf.order(ByteOrder.BIG_ENDIAN); |
| 43 | eventName = new String(data, SESSIOND_PROTOCOL_CHARSET).trim(); |
| 44 | } |
| 45 | |
| 46 | @Override |
| 47 | public LttngAgentResponse execute(ILttngTcpClientListener agent) { |
| 48 | boolean success = agent.eventDisabled(this.eventName); |
| 49 | return (success ? LttngAgentResponse.SUCESS_RESPONSE : DISABLE_EVENT_FAILURE_RESPONSE); |
| 50 | } |
| 51 | |
| 52 | @Override |
| 53 | public String toString() { |
| 54 | return "SessiondDisableEventCommand[" |
| 55 | + "eventName=" + eventName |
| 56 | +"]"; |
| 57 | } |
| 58 | } |