+++ /dev/null
-/*
- * SPDX-License-Identifier: LGPL-2.1-only
- *
- * Copyright (C) 2015 EfficiOS Inc.
- * Copyright (C) 2015 Alexandre Montplaisir <alexmonthy@efficios.com>
- * Copyright (C) 2013 David Goulet <dgoulet@efficios.com>
- */
-
-package org.lttng.ust.agent.client;
-
-import java.nio.ByteBuffer;
-import java.nio.ByteOrder;
-
-import org.lttng.ust.agent.session.EventRule;
-import org.lttng.ust.agent.session.LogLevelSelector;
-
-/**
- * Session daemon command indicating to the Java agent that some events were
- * enabled in the tracing session.
- *
- * @author Alexandre Montplaisir
- * @author David Goulet
- */
-class SessiondEnableEventCommand extends SessiondCommand {
-
- /** Fixed event name length. Value defined by the lttng agent protocol. */
- private static final int EVENT_NAME_LENGTH = 256;
-
- private final boolean commandIsValid;
-
- /* Parameters of the event rule being enabled */
- private final String eventName;
- private final LogLevelSelector logLevelFilter;
- private final String filterString;
-
- public SessiondEnableEventCommand(byte[] data) {
- if (data == null) {
- throw new IllegalArgumentException();
- }
- ByteBuffer buf = ByteBuffer.wrap(data);
- buf.order(ByteOrder.BIG_ENDIAN);
- int logLevel = buf.getInt();
- int logLevelType = buf.getInt();
- logLevelFilter = new LogLevelSelector(logLevel, logLevelType);
-
- /* Read the event name */
- byte[] eventNameBytes = new byte[EVENT_NAME_LENGTH];
- buf.get(eventNameBytes);
- eventName = new String(eventNameBytes, SESSIOND_PROTOCOL_CHARSET).trim();
-
- /* Read the filter string */
- filterString = readNextString(buf);
-
- /* The command was invalid if the string could not be read correctly */
- commandIsValid = (filterString != null);
- }
-
- @Override
- public LttngAgentResponse execute(ILttngTcpClientListener agent) {
- if (!commandIsValid) {
- return LttngAgentResponse.FAILURE_RESPONSE;
- }
-
- EventRule rule = new EventRule(eventName, logLevelFilter, filterString);
- boolean success = agent.eventEnabled(rule);
- return (success ? LttngAgentResponse.SUCESS_RESPONSE : LttngAgentResponse.FAILURE_RESPONSE);
- }
-
- @Override
- public String toString() {
- return "SessiondEnableEventCommand["
- + "eventName=" + eventName
- + ", logLevel=" + logLevelFilter.toString()
- + ", filterString=" + filterString
- +"]";
- }
-}