lttng/org.eclipse.tracecompass.lttng2.control.ui/src/org/eclipse/tracecompass/internal/lttng2/control/ui/views/handlers/EnableEventOnSessionHandler.java

   1 /**********************************************************************
   2  * Copyright (c) 2012, 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  *   Bernd Hufmann - Initial API and implementation
  11  *   Bernd Hufmann - Updated for support of LTTng Tools 2.1
  12  **********************************************************************/
  13 package org.eclipse.tracecompass.internal.lttng2.control.ui.views.handlers;
  14
  15 import java.util.Iterator;
  16 import java.util.List;
  17
  18 import org.eclipse.core.commands.ExecutionException;
  19 import org.eclipse.core.runtime.IProgressMonitor;
  20 import org.eclipse.jface.viewers.ISelection;
  21 import org.eclipse.jface.viewers.StructuredSelection;
  22 import org.eclipse.tracecompass.common.core.NonNullUtils;
  23 import org.eclipse.tracecompass.internal.lttng2.control.core.model.LogLevelType;
  24 import org.eclipse.tracecompass.internal.lttng2.control.core.model.TraceLogLevel;
  25 import org.eclipse.tracecompass.internal.lttng2.control.core.model.TraceSessionState;
  26 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.ControlView;
  27 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.model.impl.TraceDomainComponent;
  28 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.model.impl.TraceSessionComponent;
  29 import org.eclipse.ui.IWorkbenchPage;
  30
  31 /**
  32  * <p>
  33  * Command handler implementation to enable events for a known session and default channel 'channel0'
  34  * (which will be created if doesn't exist).
  35  * </p>
  36  *
  37  * @author Bernd Hufmann
  38  */
  39 public class EnableEventOnSessionHandler extends BaseEnableEventHandler {
  40
  41     // ------------------------------------------------------------------------
  42     // Attributes
  43     // ------------------------------------------------------------------------
  44
  45     //-------------------------------------------------------------------------
  46     // Operations
  47     // ------------------------------------------------------------------------
  48
  49     @Override
  50     public void enableEvents(CommandParameter param, List<String> eventNames, boolean isKernel, String filterExpression, IProgressMonitor monitor) throws ExecutionException {
  51         param.getSession().enableEvents(eventNames, isKernel, filterExpression, monitor);
  52     }
  53
  54     @Override
  55     public void enableSyscalls(CommandParameter param, IProgressMonitor monitor) throws ExecutionException {
  56         param.getSession().enableSyscalls(monitor);
  57     }
  58
  59     @Override
  60     public void enableProbe(CommandParameter param, String eventName, boolean isFunction, String probe, IProgressMonitor monitor) throws ExecutionException {
  61         param.getSession().enableProbe(eventName, isFunction, probe, monitor);
  62     }
  63
  64     @Override
  65     public void enableLogLevel(CommandParameter param, String eventName, LogLevelType logLevelType, TraceLogLevel level, String filterExpression, IProgressMonitor monitor) throws ExecutionException {
  66         param.getSession().enableLogLevel(eventName, logLevelType, level, filterExpression, monitor);
  67     }
  68
  69     @Override
  70     public TraceDomainComponent getDomain(CommandParameter param) {
  71         return null;
  72     }
  73
  74     @Override
  75     public boolean isEnabled() {
  76         // Get workbench page for the Control View
  77         IWorkbenchPage page = getWorkbenchPage();
  78         if (page == null) {
  79             return false;
  80         }
  81
  82         TraceSessionComponent session = null;
  83         // Check if one session is selected
  84         ISelection selection = page.getSelection(ControlView.ID);
  85         if (selection instanceof StructuredSelection) {
  86             StructuredSelection structered = ((StructuredSelection) selection);
  87             for (Iterator<?> iterator = structered.iterator(); iterator.hasNext();) {
  88                 Object element = iterator.next();
  89                 if (element instanceof TraceSessionComponent) {
  90                     // Add only if corresponding TraceSessionComponents is inactive and not destroyed
  91                     TraceSessionComponent tmpSession = (TraceSessionComponent) element;
  92                     if(tmpSession.getSessionState() == TraceSessionState.INACTIVE && !tmpSession.isDestroyed()) {
  93                         session = tmpSession;
  94                     }
  95                 }
  96             }
  97         }
  98         boolean isEnabled = (session != null);
  99         fLock.lock();
 100         try {
 101             fParam = null;
 102             if(isEnabled) {
 103                 fParam = new CommandParameter(NonNullUtils.checkNotNull(session));
 104             }
 105         } finally {
 106             fLock.unlock();
 107         }
 108         return isEnabled;
 109     }
 110 }