analysis/org.eclipse.tracecompass.analysis.os.linux.core.tests/stubs/org/eclipse/tracecompass/analysis/os/linux/core/tests/stubs/trace/KernelCtfTraceStub.java

   1 /*******************************************************************************
   2  * Copyright (c) 2016 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
  10 package org.eclipse.tracecompass.analysis.os.linux.core.tests.stubs.trace;
  11
  12 import java.io.IOException;
  13
  14 import org.eclipse.core.runtime.FileLocator;
  15 import org.eclipse.jdt.annotation.NonNull;
  16 import org.eclipse.tracecompass.analysis.os.linux.core.trace.IKernelAnalysisEventLayout;
  17 import org.eclipse.tracecompass.analysis.os.linux.core.trace.IKernelTrace;
  18 import org.eclipse.tracecompass.testtraces.ctf.CtfTestTrace;
  19 import org.eclipse.tracecompass.tmf.core.exceptions.TmfTraceException;
  20 import org.eclipse.tracecompass.tmf.ctf.core.event.CtfTmfEvent;
  21 import org.eclipse.tracecompass.tmf.ctf.core.trace.CtfTmfTrace;
  22
  23 /**
  24  * Stub for a generic CTF kernel trace.
  25  *
  26  * It's basically an LTTng (2.0/2.1) trace, but without depending on o.e.t.lttng2.kernel!
  27  */
  28 public class KernelCtfTraceStub extends CtfTmfTrace implements IKernelTrace {
  29
  30     /**
  31      * Constructor
  32      */
  33     public KernelCtfTraceStub() {
  34         super();
  35     }
  36
  37     /**
  38      * Get a trace from a CTF test trace.
  39      *
  40      * @param ctfTrace
  41      *            The CTF test trace
  42      * @return The initialized trace
  43      */
  44     public static synchronized KernelCtfTraceStub getTrace(CtfTestTrace ctfTrace) {
  45         String tracePath;
  46         try {
  47             tracePath = FileLocator.toFileURL(ctfTrace.getTraceURL()).getPath();
  48         } catch (IOException e) {
  49             throw new IllegalStateException();
  50         }
  51
  52         KernelCtfTraceStub trace = new KernelCtfTraceStub();
  53         try {
  54             trace.initTrace(null, tracePath, CtfTmfEvent.class);
  55         } catch (TmfTraceException e) {
  56             /* Should not happen if tracesExist() passed */
  57             throw new RuntimeException(e);
  58         }
  59         return trace;
  60     }
  61
  62     @Override
  63     public @NonNull IKernelAnalysisEventLayout getKernelEventLayout() {
  64         return KernelEventLayoutStub.getInstance();
  65     }
  66 }