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