org.eclipse.linuxtools.lttng2.ust.core/src/org/eclipse/linuxtools/lttng2/ust/core/trace/LttngUstTrace.java

   1 /**********************************************************************
   2  * Copyright (c) 2013 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  *   Matthew Khouzam - Initial API and implementation
  11  *   Alexandre Montplaisir - Add UST callstack state system
  12  **********************************************************************/
  13
  14 package org.eclipse.linuxtools.lttng2.ust.core.trace;
  15
  16 import java.io.File;
  17
  18 import org.eclipse.core.resources.IProject;
  19 import org.eclipse.core.runtime.IStatus;
  20 import org.eclipse.core.runtime.Status;
  21 import org.eclipse.linuxtools.ctf.core.trace.CTFReaderException;
  22 import org.eclipse.linuxtools.ctf.core.trace.CTFTrace;
  23 import org.eclipse.linuxtools.internal.lttng2.ust.core.Activator;
  24 import org.eclipse.linuxtools.internal.lttng2.ust.core.trace.callstack.LttngUstCallStackProvider;
  25 import org.eclipse.linuxtools.tmf.core.callstack.CallStackStateProvider;
  26 import org.eclipse.linuxtools.tmf.core.ctfadaptor.CtfTmfTrace;
  27 import org.eclipse.linuxtools.tmf.core.exceptions.TmfTraceException;
  28 import org.eclipse.linuxtools.tmf.core.statesystem.ITmfStateProvider;
  29 import org.eclipse.linuxtools.tmf.core.statesystem.ITmfStateSystem;
  30 import org.eclipse.linuxtools.tmf.core.statesystem.TmfStateSystemFactory;
  31 import org.eclipse.linuxtools.tmf.core.trace.TmfTraceManager;
  32
  33 /**
  34  * Class to contain LTTng-UST traces
  35  *
  36  * @author Matthew Khouzam
  37  * @since 2.1
  38  */
  39 public class LttngUstTrace extends CtfTmfTrace {
  40
  41     /** Name of the history file for the callstack state system */
  42     private static final String CALLSTACK_FILENAME = "ust-callstack.ht"; //$NON-NLS-1$
  43
  44     /**
  45      * Default constructor
  46      */
  47     public LttngUstTrace() {
  48         super();
  49     }
  50
  51     @Override
  52     public IStatus validate(final IProject project, final String path)  {
  53         CTFTrace temp;
  54         IStatus status;
  55         /*  Make sure the trace is openable as a CTF trace. */
  56         try {
  57             temp = new CTFTrace(path);
  58         } catch (CTFReaderException e) {
  59             status = new Status(IStatus.ERROR,  Activator.PLUGIN_ID, e.toString(), e);
  60             return status;
  61         } catch (NullPointerException e){
  62             status = new Status(IStatus.ERROR,  Activator.PLUGIN_ID, e.toString(), e);
  63             return status;
  64         }
  65
  66         /* Make sure the domain is "ust" in the trace's env vars */
  67         String dom = temp.getEnvironment().get("domain"); //$NON-NLS-1$
  68         temp.dispose();
  69         if (dom != null && dom.equals("\"ust\"")) { //$NON-NLS-1$
  70             return Status.OK_STATUS;
  71         }
  72         status = new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.LttngUstTrace_DomainError);
  73         return status;
  74     }
  75
  76     @Override
  77     public IStatus buildStateSystem() {
  78         super.buildStateSystem();
  79
  80         /*
  81          * Build the state system for the UST Callstack (will be empty if the
  82          * required events are not present).
  83          */
  84         String directory = TmfTraceManager.getSupplementaryFileDir(this);
  85         final File htFile = new File(directory + CALLSTACK_FILENAME);
  86         ITmfStateProvider csInput = new LttngUstCallStackProvider(this);
  87
  88         try {
  89             ITmfStateSystem ss = TmfStateSystemFactory.newFullHistory(htFile, csInput, false);
  90             registerStateSystem(CallStackStateProvider.ID, ss);
  91         }  catch (TmfTraceException e) {
  92             return new Status(IStatus.ERROR, Activator.PLUGIN_ID, e.getMessage(), e);
  93         }
  94
  95         return Status.OK_STATUS;
  96     }
  97 }