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, 2015 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.analysis.os.linux.core.kernelanalysis.KernelAnalysisModule;
  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.TmfStateSystemAnalysisModule;
  25 import org.eclipse.tracecompass.tmf.ctf.core.tests.shared.CtfTmfTestTrace;
  26 import org.eclipse.tracecompass.tmf.ctf.core.trace.CtfTmfTrace;
  27
  28 /**
  29  * Small program to regenerate the values used in "TestValues.java" from the
  30  * current LTTng-kernel state provider.
  31  *
  32  * It will write its output the a file called 'TestValues<something>.java' in your
  33  * temporary files directory.
  34  *
  35  * @author Alexandre Montplaisir
  36  */
  37 public class GenerateTestValues {
  38
  39     private static CtfTmfTestTrace testTrace = CtfTmfTestTrace.TRACE2;
  40     private static final long targetTimestamp = 18670067372290L + 1331649577946812237L;
  41     private static final String INDENT = "    ";
  42
  43     /**
  44      * Run the program
  45      *
  46      * @param args
  47      *            Command-line arguments, unused.
  48      * @throws Exception
  49      *             I'm messing with Exception. Come at me bro!
  50      */
  51     public static void main(String[] args) throws Exception {
  52         if (!testTrace.exists()) {
  53             System.err.println("Trace files not present.");
  54             return;
  55         }
  56
  57         /* Prepare the files */
  58         File logFile = File.createTempFile("TestValues", ".java");
  59         try (final CtfTmfTrace trace = testTrace.getTrace();
  60                 PrintWriter writer = new PrintWriter(new FileWriter(logFile), true);) {
  61
  62             /* Build and query the state system */
  63             TmfStateSystemAnalysisModule module = new KernelAnalysisModule() {
  64                 @Override
  65                 protected String getSsFileName() {
  66                     return "test-values";
  67                 }
  68             };
  69
  70             if (!module.setTrace(trace)) {
  71                 throw new IllegalStateException();
  72             }
  73             module.setId("test-values");
  74             module.schedule();
  75             module.waitForCompletion();
  76             ITmfStateSystem ssq = module.getStateSystem();
  77             if (ssq == null) {
  78                 throw new IllegalStateException();
  79             }
  80
  81             List<ITmfStateInterval> fullState = ssq.queryFullState(targetTimestamp);
  82
  83             /* Start printing the java file's contents */
  84             writer.println("interface TestValues {");
  85             writer.println();
  86             writer.println(INDENT + "int size = " + fullState.size() + ";");
  87             writer.println();
  88
  89             /* Print the array contents */
  90             writer.println(INDENT + "long[] startTimes = {");
  91             for (ITmfStateInterval interval : fullState) {
  92                 writer.println(INDENT + INDENT + String.valueOf(interval.getStartTime()) + "L,");
  93             }
  94             writer.println(INDENT + "};");
  95             writer.println();
  96
  97             writer.println(INDENT + "long[] endTimes = {");
  98             for (ITmfStateInterval interval : fullState) {
  99                 writer.println(INDENT + INDENT + String.valueOf(interval.getEndTime()) + "L,");
 100             }
 101             writer.println(INDENT + "};");
 102             writer.println();
 103
 104             writer.println(INDENT + "ITmfStateValue[] values = {");
 105             for (ITmfStateInterval interval : fullState) {
 106                 ITmfStateValue val = interval.getStateValue();
 107                 writer.print(INDENT + INDENT);
 108
 109                 switch (val.getType()) {
 110                 case NULL:
 111                     writer.println("TmfStateValue.nullValue(),");
 112                     break;
 113                 case INTEGER:
 114                     writer.println("TmfStateValue.newValueInt(" + val.unboxInt() + "),");
 115                     break;
 116                 case LONG:
 117                     writer.println("TmfStateValue.newValueLong(" + val.unboxLong() + "),");
 118                     break;
 119                 case DOUBLE:
 120                     writer.println("TmfStateValue.newValueDouble(" + val.unboxDouble() + "),");
 121                     break;
 122                 case STRING:
 123                     writer.println("TmfStateValue.newValueString(\"" + val.unboxStr() + "\"),");
 124                     break;
 125                 default:
 126                     writer.println(val.toString());
 127                     break;
 128                 }
 129             }
 130             writer.println(INDENT + "};");
 131
 132             writer.println("}");
 133             writer.println();
 134
 135             module.dispose();
 136         }
 137         System.exit(0);
 138     }
 139
 140 }