| 1 | /******************************************************************************* |
| 2 | * Copyright (c) 2012 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.linuxtools.lttng2.kernel.core.trace; |
| 14 | |
| 15 | import java.io.File; |
| 16 | |
| 17 | import org.eclipse.core.resources.IProject; |
| 18 | import org.eclipse.core.resources.IResource; |
| 19 | import org.eclipse.core.runtime.CoreException; |
| 20 | import org.eclipse.linuxtools.ctf.core.trace.CTFReaderException; |
| 21 | import org.eclipse.linuxtools.ctf.core.trace.CTFTrace; |
| 22 | import org.eclipse.linuxtools.internal.lttng2.kernel.core.stateprovider.CtfKernelStateInput; |
| 23 | import org.eclipse.linuxtools.tmf.core.TmfCommonConstants; |
| 24 | import org.eclipse.linuxtools.tmf.core.ctfadaptor.CtfTmfTrace; |
| 25 | import org.eclipse.linuxtools.tmf.core.exceptions.TmfTraceException; |
| 26 | import org.eclipse.linuxtools.tmf.core.statesystem.IStateChangeInput; |
| 27 | import org.eclipse.linuxtools.tmf.core.statesystem.StateSystemManager; |
| 28 | |
| 29 | /** |
| 30 | * This is the specification of CtfTmfTrace for use with LTTng 2.x kernel |
| 31 | * traces. It uses the CtfKernelStateInput to generate the state history. |
| 32 | * |
| 33 | * @version 1.0 |
| 34 | * @author Alexandre Montplaisir |
| 35 | */ |
| 36 | public class CtfKernelTrace extends CtfTmfTrace { |
| 37 | |
| 38 | /** |
| 39 | * The file name of the History Tree |
| 40 | */ |
| 41 | public final static String HISTORY_TREE_FILE_NAME = "stateHistory.ht"; //$NON-NLS-1$ |
| 42 | |
| 43 | /** |
| 44 | * ID of the state system we will build |
| 45 | * @since 2.0 |
| 46 | * */ |
| 47 | public static final String STATE_ID = "org.eclipse.linuxtools.lttng2.kernel"; //$NON-NLS-1$ |
| 48 | |
| 49 | /** |
| 50 | * Default constructor |
| 51 | */ |
| 52 | public CtfKernelTrace() { |
| 53 | super(); |
| 54 | } |
| 55 | |
| 56 | @Override |
| 57 | public boolean validate(final IProject project, final String path) { |
| 58 | CTFTrace temp; |
| 59 | /* |
| 60 | * Make sure the trace is openable as a CTF trace. We do this here |
| 61 | * instead of calling super.validate() to keep the reference to "temp". |
| 62 | */ |
| 63 | try { |
| 64 | temp = new CTFTrace(path); |
| 65 | } catch (CTFReaderException e) { |
| 66 | return false; |
| 67 | } |
| 68 | |
| 69 | /* Make sure the domain is "kernel" in the trace's env vars */ |
| 70 | String dom = temp.getEnvironment().get("domain"); //$NON-NLS-1$ |
| 71 | if (dom != null && dom.equals("\"kernel\"")) { //$NON-NLS-1$ |
| 72 | return true; |
| 73 | } |
| 74 | return false; |
| 75 | } |
| 76 | |
| 77 | @Override |
| 78 | protected void buildStateSystem() throws TmfTraceException { |
| 79 | /* Set up the path to the history tree file we'll use */ |
| 80 | IResource resource = this.getResource(); |
| 81 | String supplDirectory = null; |
| 82 | |
| 83 | try { |
| 84 | // get the directory where the history file will be stored. |
| 85 | supplDirectory = resource.getPersistentProperty(TmfCommonConstants.TRACE_SUPPLEMENTARY_FOLDER); |
| 86 | } catch (CoreException e) { |
| 87 | throw new TmfTraceException(e.toString(), e); |
| 88 | } |
| 89 | |
| 90 | final File htFile = new File(supplDirectory + File.separator + HISTORY_TREE_FILE_NAME); |
| 91 | final IStateChangeInput htInput = new CtfKernelStateInput(this); |
| 92 | |
| 93 | this.ss = StateSystemManager.loadStateHistory(htFile, htInput, STATE_ID, false); |
| 94 | } |
| 95 | } |