src/test/java/org/lttng/ust/agent/benchmarks/jul/handler/lttng/old/OldLttngJulHandlerTracingEnabledBenchmark.java

   1 /*
   2  * Copyright (C) 2015, EfficiOS Inc., Alexandre Montplaisir <alexmonthy@efficios.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 package org.lttng.ust.agent.benchmarks.jul.handler.lttng.old;
  20
  21 import static org.junit.Assert.assertTrue;
  22 import static org.junit.Assert.fail;
  23
  24 import java.lang.reflect.Field;
  25
  26 import org.junit.After;
  27 import org.junit.Before;
  28 import org.lttng.tools.ILttngSession;
  29 import org.lttng.tools.ILttngSession.Domain;
  30 import org.lttng.ust.agent.LTTngAgent;
  31 import org.lttng.ust.agent.benchmarks.jul.handler.JulHandlerBenchmarkBase;
  32 import org.lttng.ust.agent.jul.LttngLogHandler;
  33
  34 /**
  35  * Benchmark for the LTTng-UST handler, using the legacy API. Tracing is
  36  * enabled in the tracing session.
  37  */
  38 @SuppressWarnings("deprecation")
  39 public class OldLttngJulHandlerTracingEnabledBenchmark extends JulHandlerBenchmarkBase {
  40
  41     private ILttngSession session;
  42     private LttngLogHandler agentHandler;
  43
  44
  45     /**
  46      * Test setup
  47      */
  48     @Before
  49     public void testSetup() {
  50         LTTngAgent agentInstance = LTTngAgent.getLTTngAgent();
  51
  52         /*
  53          * The "old API" works by attaching a handler managed by the agent to
  54          * the root JUL logger. This causes problems here, because we use
  55          * logger.setUserParentHandler(false), which does not trigger the
  56          * handler as would be expected.
  57          *
  58          * Instead we will retrieve this handler through reflection, and attach
  59          * it to our own logger here for the duration of the test.
  60          */
  61         try {
  62             Field julHandlerField = LTTngAgent.class.getDeclaredField("julHandler");
  63             julHandlerField.setAccessible(true);
  64             agentHandler = (LttngLogHandler) julHandlerField.get(agentInstance);
  65
  66             logger.addHandler(agentHandler);
  67
  68         } catch (ReflectiveOperationException e) {
  69             fail();
  70         }
  71
  72         session = ILttngSession.newCommandLineSession(null, Domain.JUL);
  73         assertTrue(session.enableAllEvents());
  74         assertTrue(session.start());
  75     }
  76
  77     /**
  78      * Test cleanup
  79      */
  80     @After
  81     public void testTeardown() {
  82         assertTrue(session.stop());
  83         session.close();
  84
  85         logger.removeHandler(agentHandler);
  86         LTTngAgent.dispose();
  87     }
  88 }