lttng/org.eclipse.tracecompass.lttng2.control.ui/src/org/eclipse/tracecompass/internal/lttng2/control/ui/views/handlers/EnableEventOnChannelHandler.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 static org.eclipse.tracecompass.common.core.NonNullUtils.checkNotNull;
  16
  17 import java.util.Iterator;
  18 import java.util.List;
  19
  20 import org.eclipse.core.commands.ExecutionException;
  21 import org.eclipse.core.runtime.IProgressMonitor;
  22 import org.eclipse.jface.viewers.ISelection;
  23 import org.eclipse.jface.viewers.StructuredSelection;
  24 import org.eclipse.tracecompass.internal.lttng2.control.core.model.TraceDomainType;
  25 import org.eclipse.tracecompass.internal.lttng2.control.core.model.ITraceLogLevel;
  26 import org.eclipse.tracecompass.internal.lttng2.control.core.model.LogLevelType;
  27 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.ControlView;
  28 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.model.impl.TraceChannelComponent;
  29 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.model.impl.TraceDomainComponent;
  30 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.model.impl.TraceSessionComponent;
  31 import org.eclipse.ui.IWorkbenchPage;
  32
  33 /**
  34  * <p>
  35  * Command handler implementation to enable events for a known channel.
  36  * </p>
  37  *
  38  * @author Bernd Hufmann
  39  */
  40 public class EnableEventOnChannelHandler 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 filterExression, List<String> excludedEvents, IProgressMonitor monitor) throws ExecutionException {
  52         if (param instanceof ChannelCommandParameter) {
  53             ((ChannelCommandParameter)param).getChannel().enableEvents(eventNames, filterExression, excludedEvents, monitor);
  54         }
  55     }
  56
  57     @Override
  58     public void enableSyscalls(CommandParameter param, List<String> syscallNames, IProgressMonitor monitor) throws ExecutionException {
  59         if (param instanceof ChannelCommandParameter) {
  60             ((ChannelCommandParameter)param).getChannel().enableSyscalls(syscallNames, monitor);
  61         }
  62     }
  63
  64     @Override
  65     public void enableProbe(CommandParameter param, String eventName, boolean isFunction, String probe, IProgressMonitor monitor) throws ExecutionException {
  66         if (param instanceof ChannelCommandParameter) {
  67             ((ChannelCommandParameter)param).getChannel().enableProbe(eventName, isFunction, probe, monitor);
  68         }
  69     }
  70
  71     @Override
  72     public void enableLogLevel(CommandParameter param, List<String> eventNames, LogLevelType logLevelType, ITraceLogLevel level, String filterExression, TraceDomainType domain, IProgressMonitor monitor) throws ExecutionException {
  73         if (param instanceof ChannelCommandParameter) {
  74             ((ChannelCommandParameter)param).getChannel().enableLogLevel(eventNames, logLevelType, level, filterExression, domain, monitor);
  75         }
  76     }
  77
  78     @Override
  79     public TraceDomainComponent getDomain(CommandParameter param) {
  80         if (param instanceof ChannelCommandParameter) {
  81             return (TraceDomainComponent) ((ChannelCommandParameter)param).getChannel().getParent();
  82         }
  83         return null;
  84     }
  85
  86     @Override
  87     public boolean isEnabled() {
  88         // Get workbench page for the Control View
  89         IWorkbenchPage page = getWorkbenchPage();
  90         if (page == null) {
  91             return false;
  92         }
  93
  94         TraceChannelComponent channel = null;
  95         TraceSessionComponent session = null;
  96         ISelection selection = page.getSelection(ControlView.ID);
  97         if (selection instanceof StructuredSelection) {
  98             StructuredSelection structered = ((StructuredSelection) selection);
  99             for (Iterator<?> iterator = structered.iterator(); iterator.hasNext();) {
 100                 Object element = iterator.next();
 101                 if (element instanceof TraceChannelComponent) {
 102                     // Add only if corresponding TraceSessionComponents is inactive and not destroyed
 103                     TraceChannelComponent tmpChannel = (TraceChannelComponent) element;
 104                     session = tmpChannel.getSession();
 105                     if (!session.isDestroyed()) {
 106                         channel = tmpChannel;
 107                     }
 108                 }
 109             }
 110         }
 111
 112         boolean isEnabled = (channel != null);
 113         fLock.lock();
 114         try {
 115             fParam = null;
 116             if(isEnabled) {
 117                 fParam = new ChannelCommandParameter(checkNotNull(session), checkNotNull(channel));
 118             }
 119         } finally {
 120             fLock.unlock();
 121         }
 122         return isEnabled;
 123     }
 124 }
 125