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

   1 /**********************************************************************
   2  * Copyright (c) 2012, 2014 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.internal.lttng2.control.core.model.LogLevelType;
  23 import org.eclipse.tracecompass.internal.lttng2.control.core.model.TraceLogLevel;
  24 import org.eclipse.tracecompass.internal.lttng2.control.core.model.TraceSessionState;
  25 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.ControlView;
  26 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.model.impl.TraceDomainComponent;
  27 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.model.impl.TraceSessionComponent;
  28 import org.eclipse.ui.IWorkbenchPage;
  29
  30 /**
  31  * <p>
  32  * Command handler implementation to enable events for a known session and default channel 'channel0'
  33  * (which will be created if doesn't exist).
  34  * </p>
  35  *
  36  * @author Bernd Hufmann
  37  */
  38 public class EnableEventOnSessionHandler extends BaseEnableEventHandler {
  39
  40     // ------------------------------------------------------------------------
  41     // Attributes
  42     // ------------------------------------------------------------------------
  43
  44     //-------------------------------------------------------------------------
  45     // Operations
  46     // ------------------------------------------------------------------------
  47
  48     @Override
  49     public void enableEvents(CommandParameter param, List<String> eventNames, boolean isKernel, String filterExpression, IProgressMonitor monitor) throws ExecutionException {
  50         param.getSession().enableEvents(eventNames, isKernel, filterExpression, monitor);
  51     }
  52
  53     @Override
  54     public void enableSyscalls(CommandParameter param, IProgressMonitor monitor) throws ExecutionException {
  55         param.getSession().enableSyscalls(monitor);
  56     }
  57
  58     @Override
  59     public void enableProbe(CommandParameter param, String eventName, boolean isFunction, String probe, IProgressMonitor monitor) throws ExecutionException {
  60         param.getSession().enableProbe(eventName, isFunction, probe, monitor);
  61     }
  62
  63     @Override
  64     public void enableLogLevel(CommandParameter param, String eventName, LogLevelType logLevelType, TraceLogLevel level, String filterExpression, IProgressMonitor monitor) throws ExecutionException {
  65         param.getSession().enableLogLevel(eventName, logLevelType, level, filterExpression, monitor);
  66     }
  67
  68     @Override
  69     public TraceDomainComponent getDomain(CommandParameter param) {
  70         return null;
  71     }
  72
  73     @Override
  74     public boolean isEnabled() {
  75         // Get workbench page for the Control View
  76         IWorkbenchPage page = getWorkbenchPage();
  77         if (page == null) {
  78             return false;
  79         }
  80
  81         TraceSessionComponent session = null;
  82         // Check if one session is selected
  83         ISelection selection = page.getSelection(ControlView.ID);
  84         if (selection instanceof StructuredSelection) {
  85             StructuredSelection structered = ((StructuredSelection) selection);
  86             for (Iterator<?> iterator = structered.iterator(); iterator.hasNext();) {
  87                 Object element = iterator.next();
  88                 if (element instanceof TraceSessionComponent) {
  89                     // Add only if corresponding TraceSessionComponents is inactive and not destroyed
  90                     TraceSessionComponent tmpSession = (TraceSessionComponent) element;
  91                     if(tmpSession.getSessionState() == TraceSessionState.INACTIVE && !tmpSession.isDestroyed()) {
  92                         session = tmpSession;
  93                     }
  94                 }
  95             }
  96         }
  97         boolean isEnabled = (session != null);
  98         fLock.lock();
  99         try {
 100             fParam = null;
 101             if(isEnabled) {
 102                 fParam = new CommandParameter(session);
 103             }
 104         } finally {
 105             fLock.unlock();
 106         }
 107         return isEnabled;
 108     }
 109 }