org.eclipse.tracecompass.lttng2.kernel.core.tests/src/org/eclipse/tracecompass/lttng2/kernel/core/tests/analysis/kernel/statesystem/GenerateTestValues.java

   1 /*******************************************************************************
   2  * Copyright (c) 2013, 2014 Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials are
   5  * made available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *   Alexandre Montplaisir - Initial API and implementation
  11  ******************************************************************************/
  12
  13 package org.eclipse.tracecompass.lttng2.kernel.core.tests.analysis.kernel.statesystem;
  14
  15 import java.io.File;
  16 import java.io.FileWriter;
  17 import java.io.PrintWriter;
  18 import java.util.List;
  19
  20 import org.eclipse.tracecompass.lttng2.kernel.core.analysis.kernel.LttngKernelStateProvider;
  21 import org.eclipse.tracecompass.statesystem.core.ITmfStateSystem;
  22 import org.eclipse.tracecompass.statesystem.core.interval.ITmfStateInterval;
  23 import org.eclipse.tracecompass.statesystem.core.statevalue.ITmfStateValue;
  24 import org.eclipse.tracecompass.tmf.core.statesystem.ITmfStateProvider;
  25 import org.eclipse.tracecompass.tmf.core.statesystem.TmfStateSystemAnalysisModule;
  26 import org.eclipse.tracecompass.tmf.ctf.core.tests.shared.CtfTmfTestTrace;
  27 import org.eclipse.tracecompass.tmf.ctf.core.trace.CtfTmfTrace;
  28
  29 /**
  30  * Small program to regenerate the values used in "TestValues.java" from the
  31  * current LTTng-kernel state provider.
  32  *
  33  * It will write its output the a file called 'TestValues<something>.java' in your
  34  * temporary files directory.
  35  *
  36  * @author Alexandre Montplaisir
  37  */
  38 public class GenerateTestValues {
  39
  40     private static CtfTmfTestTrace testTrace = CtfTmfTestTrace.TRACE2;
  41     private static final long targetTimestamp = 18670067372290L + 1331649577946812237L;
  42     private static final String INDENT = "    ";
  43
  44     /**
  45      * Run the program
  46      *
  47      * @param args
  48      *            Command-line arguments, unused.
  49      * @throws Exception
  50      *             I'm messing with Exception. Come at me bro!
  51      */
  52     public static void main(String[] args) throws Exception {
  53         if (!testTrace.exists()) {
  54             System.err.println("Trace files not present.");
  55             return;
  56         }
  57
  58         /* Prepare the files */
  59         File logFile = File.createTempFile("TestValues", ".java");
  60         try (final CtfTmfTrace trace = testTrace.getTrace();
  61                 PrintWriter writer = new PrintWriter(new FileWriter(logFile), true);) {
  62
  63             /* Build and query the state system */
  64             TmfStateSystemAnalysisModule module = new TmfStateSystemAnalysisModule() {
  65                 @Override
  66                 protected ITmfStateProvider createStateProvider() {
  67                     return new LttngKernelStateProvider(trace);
  68                 }
  69
  70                 @Override
  71                 protected String getSsFileName() {
  72                     return "test-values";
  73                 }
  74             };
  75
  76             module.setTrace(trace);
  77             module.setId("test-values");
  78             module.schedule();
  79             module.waitForCompletion();
  80             ITmfStateSystem ssq = module.getStateSystem();
  81             if (ssq == null) {
  82                 throw new IllegalStateException();
  83             }
  84
  85             List<ITmfStateInterval> fullState = ssq.queryFullState(targetTimestamp);
  86
  87             /* Start printing the java file's contents */
  88             writer.println("interface TestValues {");
  89             writer.println();
  90             writer.println(INDENT + "static final int size = " + fullState.size() + ";");
  91             writer.println();
  92
  93             /* Print the array contents */
  94             writer.println(INDENT + "static final long[] startTimes = {");
  95             for (ITmfStateInterval interval : fullState) {
  96                 writer.println(INDENT + INDENT + String.valueOf(interval.getStartTime()) + "L,");
  97             }
  98             writer.println(INDENT + "};");
  99             writer.println();
 100
 101             writer.println(INDENT + "static final long[] endTimes = {");
 102             for (ITmfStateInterval interval : fullState) {
 103                 writer.println(INDENT + INDENT + String.valueOf(interval.getEndTime()) + "L,");
 104             }
 105             writer.println(INDENT + "};");
 106             writer.println();
 107
 108             writer.println(INDENT + "static final ITmfStateValue[] values = {");
 109             for (ITmfStateInterval interval : fullState) {
 110                 ITmfStateValue val = interval.getStateValue();
 111                 writer.print(INDENT + INDENT);
 112
 113                 switch (val.getType()) {
 114                 case NULL:
 115                     writer.println("TmfStateValue.nullValue(),");
 116                     break;
 117                 case INTEGER:
 118                     writer.println("TmfStateValue.newValueInt(" + val.unboxInt() + "),");
 119                     break;
 120                 case LONG:
 121                     writer.println("TmfStateValue.newValueLong(" + val.unboxLong() + "),");
 122                     break;
 123                 case DOUBLE:
 124                     writer.println("TmfStateValue.newValueDouble(" + val.unboxDouble() + "),");
 125                     break;
 126                 case STRING:
 127                     writer.println("TmfStateValue.newValueString(\"" + val.unboxStr() + "\"),");
 128                     break;
 129                 default:
 130                     writer.println(val.toString());
 131                     break;
 132                 }
 133             }
 134             writer.println(INDENT + "};");
 135
 136             writer.println("}");
 137             writer.println();
 138
 139             module.dispose();
 140         }
 141         System.exit(0);
 142     }
 143
 144 }