org.eclipse.linuxtools.lttng2.ui/src/org/eclipse/linuxtools/internal/lttng2/ui/views/control/handlers/CreateSessionHandler.java

   1 /**********************************************************************
   2  * Copyright (c) 2012, 2013 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.linuxtools.internal.lttng2.ui.views.control.handlers;
  14
  15 import org.eclipse.core.commands.ExecutionEvent;
  16 import org.eclipse.core.commands.ExecutionException;
  17 import org.eclipse.core.runtime.IProgressMonitor;
  18 import org.eclipse.core.runtime.IStatus;
  19 import org.eclipse.core.runtime.Status;
  20 import org.eclipse.core.runtime.jobs.Job;
  21 import org.eclipse.jface.viewers.ISelection;
  22 import org.eclipse.jface.viewers.StructuredSelection;
  23 import org.eclipse.jface.window.Window;
  24 import org.eclipse.linuxtools.internal.lttng2.ui.Activator;
  25 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.ControlView;
  26 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.dialogs.ICreateSessionDialog;
  27 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.dialogs.TraceControlDialogFactory;
  28 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.messages.Messages;
  29 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceSessionGroup;
  30 import org.eclipse.ui.IWorkbenchPage;
  31
  32 /**
  33  * <p>
  34  * Command handler implementation to create a trace session.
  35  * </p>
  36  *
  37  * @author Bernd Hufmann
  38  */
  39 public class CreateSessionHandler extends BaseControlViewHandler {
  40
  41     // ------------------------------------------------------------------------
  42     // Attributes
  43     // ------------------------------------------------------------------------
  44     /**
  45      * The trace session group the command is to be executed on.
  46      */
  47     private TraceSessionGroup fSessionGroup = null;
  48
  49     // ------------------------------------------------------------------------
  50     // Operations
  51     // ------------------------------------------------------------------------
  52     /*
  53      * (non-Javadoc)
  54      * @see org.eclipse.core.commands.AbstractHandler#execute(org.eclipse.core.commands.ExecutionEvent)
  55      */
  56     @Override
  57     public Object execute(ExecutionEvent event) throws ExecutionException {
  58
  59         fLock.lock();
  60         try {
  61             final TraceSessionGroup sessionGroup = fSessionGroup;
  62
  63             // Open dialog box for the node name and address
  64             final ICreateSessionDialog dialog = TraceControlDialogFactory.getInstance().getCreateSessionDialog();
  65             dialog.initialize(sessionGroup);
  66
  67             if (dialog.open() != Window.OK) {
  68                 return null;
  69             }
  70
  71             Job job = new Job(Messages.TraceControl_CreateSessionJob) {
  72                 @Override
  73                 protected IStatus run(IProgressMonitor monitor) {
  74                     try {
  75                         if (dialog.isStreamedTrace()) {
  76                             sessionGroup.createSession(dialog.getSessionName(), dialog.getNetworkUrl(), dialog.getControlUrl(),
  77                                     dialog.getDataUrl(), monitor);
  78                         } else {
  79                             String sessionPath = dialog.isDefaultSessionPath() ? null : dialog.getSessionPath();
  80                             sessionGroup.createSession(dialog.getSessionName(), sessionPath, monitor);
  81                         }
  82                     } catch (ExecutionException e) {
  83                         return new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.TraceControl_CreateSessionFailure, e);
  84                     }
  85                     return Status.OK_STATUS;
  86                 }
  87             };
  88             job.setUser(true);
  89             job.schedule();
  90         } finally {
  91             fLock.unlock();
  92         }
  93         return null;
  94     }
  95
  96     /*
  97      * (non-Javadoc)
  98      * @see org.eclipse.core.commands.AbstractHandler#isEnabled()
  99      */
 100     @Override
 101     public boolean isEnabled() {
 102
 103         // Get workbench page for the Control View
 104         IWorkbenchPage page = getWorkbenchPage();
 105         if (page == null) {
 106             return false;
 107         }
 108
 109         TraceSessionGroup sessionGroup = null;
 110
 111         // Check if the session group project is selected
 112         ISelection selection = page.getSelection(ControlView.ID);
 113         if (selection instanceof StructuredSelection) {
 114             Object element = ((StructuredSelection) selection).getFirstElement();
 115             sessionGroup = (element instanceof TraceSessionGroup) ? (TraceSessionGroup) element : null;
 116         }
 117
 118         boolean isEnabled = sessionGroup != null;
 119         fLock.lock();
 120         try {
 121             fSessionGroup = null;
 122             if(isEnabled) {
 123                 fSessionGroup = sessionGroup;
 124             }
 125         } finally {
 126             fLock.unlock();
 127         }
 128         return isEnabled;
 129     }
 130 }