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     /**
  46      * The trace session group the command is to be executed on.
  47      */
  48     private TraceSessionGroup fSessionGroup = null;
  49
  50     // ------------------------------------------------------------------------
  51     // Operations
  52     // ------------------------------------------------------------------------
  53
  54     @Override
  55     public Object execute(ExecutionEvent event) throws ExecutionException {
  56
  57         fLock.lock();
  58         try {
  59             final TraceSessionGroup sessionGroup = fSessionGroup;
  60
  61             // Open dialog box for the node name and address
  62             final ICreateSessionDialog dialog = TraceControlDialogFactory.getInstance().getCreateSessionDialog();
  63             dialog.initialize(sessionGroup);
  64
  65             if (dialog.open() != Window.OK) {
  66                 return null;
  67             }
  68
  69             Job job = new Job(Messages.TraceControl_CreateSessionJob) {
  70                 @Override
  71                 protected IStatus run(IProgressMonitor monitor) {
  72                     try {
  73                         if (dialog.isStreamedTrace()) {
  74                             sessionGroup.createSession(dialog.getSessionName(), dialog.getNetworkUrl(), dialog.getControlUrl(),
  75                                     dialog.getDataUrl(), dialog.isSnapshot(), monitor);
  76                         } else {
  77                             String sessionPath = dialog.isDefaultSessionPath() ? null : dialog.getSessionPath();
  78                             sessionGroup.createSession(dialog.getSessionName(), sessionPath, dialog.isSnapshot(), monitor);
  79                         }
  80                     } catch (ExecutionException e) {
  81                         return new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.TraceControl_CreateSessionFailure, e);
  82                     }
  83                     return Status.OK_STATUS;
  84                 }
  85             };
  86             job.setUser(true);
  87             job.schedule();
  88         } finally {
  89             fLock.unlock();
  90         }
  91         return null;
  92     }
  93
  94     @Override
  95     public boolean isEnabled() {
  96
  97         // Get workbench page for the Control View
  98         IWorkbenchPage page = getWorkbenchPage();
  99         if (page == null) {
 100             return false;
 101         }
 102
 103         TraceSessionGroup sessionGroup = null;
 104
 105         // Check if the session group project is selected
 106         ISelection selection = page.getSelection(ControlView.ID);
 107         if (selection instanceof StructuredSelection) {
 108             Object element = ((StructuredSelection) selection).getFirstElement();
 109             sessionGroup = (element instanceof TraceSessionGroup) ? (TraceSessionGroup) element : null;
 110         }
 111
 112         boolean isEnabled = sessionGroup != null;
 113         fLock.lock();
 114         try {
 115             fSessionGroup = null;
 116             if(isEnabled) {
 117                 fSessionGroup = sessionGroup;
 118             }
 119         } finally {
 120             fLock.unlock();
 121         }
 122         return isEnabled;
 123     }
 124 }