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.TraceDomainType;
  24 import org.eclipse.tracecompass.internal.lttng2.control.core.model.ITraceLogLevel;
  25 import org.eclipse.tracecompass.internal.lttng2.control.core.model.LogLevelType;
  26 import org.eclipse.tracecompass.internal.lttng2.control.core.model.TraceSessionState;
  27 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.ControlView;
  28 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.model.impl.TraceDomainComponent;
  29 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.model.impl.TraceSessionComponent;
  30 import org.eclipse.ui.IWorkbenchPage;
  31
  32 /**
  33  * <p>
  34  * Command handler implementation to enable events for a known session and default channel 'channel0'
  35  * (which will be created if doesn't exist).
  36  * </p>
  37  *
  38  * @author Bernd Hufmann
  39  */
  40 public class EnableEventOnSessionHandler extends BaseEnableEventHandler {
  41
  42     // ------------------------------------------------------------------------
  43     // Attributes
  44     // ------------------------------------------------------------------------
  45
  46     //-------------------------------------------------------------------------
  47     // Operations
  48     // ------------------------------------------------------------------------
  49
  50     @Override
  51     public void enableEvents(CommandParameter param, List<String> eventNames, TraceDomainType domain, String filterExpression, List<String> excludedEvents, IProgressMonitor monitor) throws ExecutionException {
  52         param.getSession().enableEvents(eventNames, domain, filterExpression, excludedEvents, monitor);
  53     }
  54
  55     @Override
  56     public void enableSyscalls(CommandParameter param, List<String> syscallNames, IProgressMonitor monitor) throws ExecutionException {
  57         param.getSession().enableSyscalls(syscallNames, monitor);
  58     }
  59
  60     @Override
  61     public void enableProbe(CommandParameter param, String eventName, boolean isFunction, String probe, IProgressMonitor monitor) throws ExecutionException {
  62         param.getSession().enableProbe(eventName, isFunction, probe, monitor);
  63     }
  64
  65     @Override
  66     public void enableLogLevel(CommandParameter param, List<String> eventNames, LogLevelType logLevelType, ITraceLogLevel level, String filterExpression, TraceDomainType domain, IProgressMonitor monitor) throws ExecutionException {
  67         param.getSession().enableLogLevel(eventNames, logLevelType, level, filterExpression, domain, monitor);
  68     }
  69
  70     @Override
  71     public TraceDomainComponent getDomain(CommandParameter param) {
  72         return null;
  73     }
  74
  75     @Override
  76     public boolean isEnabled() {
  77         // Get workbench page for the Control View
  78         IWorkbenchPage page = getWorkbenchPage();
  79         if (page == null) {
  80             return false;
  81         }
  82
  83         TraceSessionComponent session = null;
  84         // Check if one session is selected
  85         ISelection selection = page.getSelection(ControlView.ID);
  86         if (selection instanceof StructuredSelection) {
  87             StructuredSelection structered = ((StructuredSelection) selection);
  88             for (Iterator<?> iterator = structered.iterator(); iterator.hasNext();) {
  89                 Object element = iterator.next();
  90                 if (element instanceof TraceSessionComponent) {
  91                     // Add only if corresponding TraceSessionComponents is inactive and not destroyed
  92                     TraceSessionComponent tmpSession = (TraceSessionComponent) element;
  93                     if(tmpSession.getSessionState() == TraceSessionState.INACTIVE && !tmpSession.isDestroyed()) {
  94                         session = tmpSession;
  95                     }
  96                 }
  97             }
  98         }
  99         boolean isEnabled = (session != null);
 100         fLock.lock();
 101         try {
 102             fParam = null;
 103             if(isEnabled) {
 104                 fParam = new CommandParameter(NonNullUtils.checkNotNull(session));
 105             }
 106         } finally {
 107             fLock.unlock();
 108         }
 109         return isEnabled;
 110     }
 111 }