lttng/org.lttng.scope.lttng.kernel.core/src/org/lttng/scope/lttng/kernel/core/analysis/os/handlers/internal/KernelEventHandler.java

   1 /*******************************************************************************
   2  * Copyright (c) 2015 Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which 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  *******************************************************************************/
  12
  13 package org.lttng.scope.lttng.kernel.core.analysis.os.handlers.internal;
  14
  15 import org.eclipse.tracecompass.tmf.core.event.ITmfEvent;
  16 import org.lttng.scope.lttng.kernel.core.trace.layout.ILttngKernelEventLayout;
  17
  18 import ca.polymtl.dorsal.libdelorean.ITmfStateSystemBuilder;
  19 import ca.polymtl.dorsal.libdelorean.exceptions.AttributeNotFoundException;
  20
  21 /**
  22  * Base class for all kernel event handlers.
  23  */
  24 public abstract class KernelEventHandler {
  25
  26     private final ILttngKernelEventLayout fLayout;
  27
  28     /**
  29      * Constructor
  30      *
  31      * @param layout
  32      *            the analysis layout
  33      */
  34     public KernelEventHandler(ILttngKernelEventLayout layout) {
  35         fLayout = layout;
  36     }
  37
  38     /**
  39      * Get the analysis layout
  40      *
  41      * @return the analysis layout
  42      */
  43     protected ILttngKernelEventLayout getLayout() {
  44         return fLayout;
  45     }
  46
  47     /**
  48      * Handle a specific kernel event.
  49      *
  50      * @param ss
  51      *            the state system to write to
  52      * @param event
  53      *            the event
  54      * @throws AttributeNotFoundException
  55      *             if the attribute is not yet create
  56      */
  57     public abstract void handleEvent(ITmfStateSystemBuilder ss, ITmfEvent event) throws AttributeNotFoundException;
  58
  59 }