org.eclipse.linuxtools.lttng2.ui/src/org/eclipse/linuxtools/internal/lttng2/ui/views/control/model/impl/TargetNodeComponent.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.model.impl;
  14
  15 import java.util.List;
  16
  17 import org.eclipse.core.commands.ExecutionException;
  18 import org.eclipse.core.runtime.IProgressMonitor;
  19 import org.eclipse.core.runtime.IStatus;
  20 import org.eclipse.core.runtime.Status;
  21 import org.eclipse.core.runtime.jobs.Job;
  22 import org.eclipse.jface.dialogs.ErrorDialog;
  23 import org.eclipse.linuxtools.internal.lttng2.core.control.model.TargetNodeState;
  24 import org.eclipse.linuxtools.internal.lttng2.ui.Activator;
  25 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.messages.Messages;
  26 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.ITraceControlComponent;
  27 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.property.TargetNodePropertySource;
  28 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.remote.ICommandShell;
  29 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.remote.IRemoteSystemProxy;
  30 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.remote.RemoteSystemProxy;
  31 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.service.ILttngControlService;
  32 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.service.LTTngControlServiceFactory;
  33 import org.eclipse.rse.core.RSECorePlugin;
  34 import org.eclipse.rse.core.model.IHost;
  35 import org.eclipse.rse.core.model.IRSECallback;
  36 import org.eclipse.rse.core.model.ISystemRegistry;
  37 import org.eclipse.rse.core.subsystems.CommunicationsEvent;
  38 import org.eclipse.rse.core.subsystems.ICommunicationsListener;
  39 import org.eclipse.swt.graphics.Image;
  40 import org.eclipse.swt.widgets.Display;
  41 import org.eclipse.ui.PlatformUI;
  42 import org.eclipse.ui.views.properties.IPropertySource;
  43
  44 /**
  45  * <p>
  46  * Implementation of the trace node component.
  47  * </p>
  48  *
  49  * @author Bernd Hufmann
  50  */
  51 public class TargetNodeComponent extends TraceControlComponent implements ICommunicationsListener {
  52
  53     // ------------------------------------------------------------------------
  54     // Constants
  55     // ------------------------------------------------------------------------
  56     /**
  57      * Path to icon file for this component (state connected).
  58      */
  59     public static final String TARGET_NODE_CONNECTED_ICON_FILE = "icons/obj16/target_connected.gif"; //$NON-NLS-1$
  60     /**
  61      * Path to icon file for this component (state disconnected).
  62      */
  63     public static final String TARGET_NODE_DISCONNECTED_ICON_FILE = "icons/obj16/target_disconnected.gif"; //$NON-NLS-1$
  64
  65     // ------------------------------------------------------------------------
  66     // Attributes
  67     // ------------------------------------------------------------------------
  68     /**
  69      * The node connection state.
  70      */
  71     private TargetNodeState fState = TargetNodeState.DISCONNECTED;
  72     /**
  73      * The image to be displayed in state disconnected.
  74      */
  75     private Image fDisconnectedImage = null;
  76     /**
  77      * The connection implementation.
  78      */
  79     private IHost fHost = null;
  80     /**
  81      * The remote proxy implementation.
  82      */
  83     private IRemoteSystemProxy fRemoteProxy = null;
  84     /**
  85      * The control service for LTTng specific commands.
  86      */
  87     private ILttngControlService fService = null;
  88     /**
  89      * The command shell for issuing commands.
  90      */
  91     private ICommandShell fShell = null;
  92
  93     // ------------------------------------------------------------------------
  94     // Constructors
  95     // ------------------------------------------------------------------------
  96     /**
  97      * Constructor
  98      * @param name - the name of the component
  99      * @param parent - the parent of the component
 100      * @param host - the host connection implementation
 101      * @param proxy - the remote proxy implementation
 102      */
 103     public TargetNodeComponent(String name, ITraceControlComponent parent, IHost host, IRemoteSystemProxy proxy) {
 104         super(name, parent);
 105         setImage(TARGET_NODE_CONNECTED_ICON_FILE);
 106         fDisconnectedImage = Activator.getDefault().loadIcon(TARGET_NODE_DISCONNECTED_ICON_FILE);
 107         fHost = host;
 108         fRemoteProxy = proxy;
 109         setToolTip(fHost.getHostName());
 110     }
 111
 112     /**
 113      * Constructor (using default proxy)
 114      * @param name - the name of the component
 115      * @param parent - the parent of the component
 116      * @param host - the host connection implementation
 117      */
 118     public TargetNodeComponent(String name, ITraceControlComponent parent, IHost host) {
 119         this(name, parent, host, new RemoteSystemProxy(host));
 120     }
 121
 122     // ------------------------------------------------------------------------
 123     // Accessors
 124     // ------------------------------------------------------------------------
 125     /*
 126      * (non-Javadoc)
 127      * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceControlComponent#getImage()
 128      */
 129     @Override
 130     public Image getImage() {
 131         if (fState == TargetNodeState.CONNECTED) {
 132             return super.getImage();
 133         }
 134         return fDisconnectedImage;
 135     }
 136
 137     /*
 138      * (non-Javadoc)
 139      * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceControlComponent#getTargetNodeState()
 140      */
 141     @Override
 142     public TargetNodeState getTargetNodeState() {
 143         return fState;
 144     }
 145
 146     /*
 147      * (non-Javadoc)
 148      * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceControlComponent#setTargetNodeState(org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.ITraceControlComponent.TargetNodeState)
 149      */
 150     @Override
 151     public void setTargetNodeState(TargetNodeState state) {
 152         fState = state;
 153         fireComponentChanged(TargetNodeComponent.this);
 154     }
 155
 156     /*
 157      * (non-Javadoc)
 158      * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceControlComponent#getControlService()
 159      */
 160     @Override
 161     public ILttngControlService getControlService() {
 162         return fService;
 163     }
 164
 165     /*
 166      * (non-Javadoc)
 167      * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceControlComponent#setControlService(org.eclipse.linuxtools.internal.lttng2.ui.views.control.service.ILttngControlService)
 168      */
 169     @Override
 170     public void setControlService(ILttngControlService service) {
 171         fService = service;
 172     }
 173
 174     /*
 175      * (non-Javadoc)
 176      * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceControlComponent#getAdapter(java.lang.Class)
 177      */
 178     @Override
 179     public Object getAdapter(Class adapter) {
 180         if (adapter == IPropertySource.class) {
 181             return new TargetNodePropertySource(this);
 182         }
 183         return null;
 184     }
 185
 186     /**
 187      * @return remote host name
 188      */
 189     public String getHostName() {
 190         return fHost.getHostName();
 191     }
 192
 193     /**
 194      * @return remote system proxy implementation
 195      */
 196     public IRemoteSystemProxy getRemoteSystemProxy() {
 197         return fRemoteProxy;
 198     }
 199
 200     /**
 201      * @return all available sessions.
 202      */
 203     public TraceSessionComponent[] getSessions() {
 204         List<ITraceControlComponent> compenents = getChildren(TraceSessionGroup.class);
 205         if (compenents.size() > 0) {
 206             TraceSessionGroup group = (TraceSessionGroup)compenents.get(0);
 207             List<ITraceControlComponent> sessions = group.getChildren(TraceSessionComponent.class);
 208             return sessions.toArray(new TraceSessionComponent[sessions.size()]);
 209         }
 210         return new TraceSessionComponent[0];
 211     }
 212
 213     /**
 214      * @return node version
 215      */
 216     public String getNodeVersion() {
 217         // Control service is null during connection to node
 218         if (getControlService() != null) {
 219             return getControlService().getVersion();
 220         }
 221         return ""; //$NON-NLS-1$
 222     }
 223
 224     /**
 225      * Returns if node supports filtering of events
 226      * @return <code>true</code> if node supports filtering else <code>false</code>
 227      */
 228     public boolean isEventFilteringSupported() {
 229         return getControlService().isVersionSupported("2.1.0"); //$NON-NLS-1$
 230     }
 231
 232     /**
 233      * Returns if node supports networks streaming or not
 234      * @return <code>true</code> if node supports filtering else <code>false</code>
 235      *
 236      */
 237     public boolean isNetworkStreamingSupported() {
 238         return getControlService().isVersionSupported("2.1.0"); //$NON-NLS-1$
 239     }
 240
 241     // ------------------------------------------------------------------------
 242     // Operations
 243     // ------------------------------------------------------------------------
 244
 245    /*
 246     * @see org.eclipse.rse.core.subsystems.ICommunicationsListener#communicationsStateChange(org.eclipse.rse.core.subsystems.CommunicationsEvent)
 247     */
 248    @Override
 249    public void communicationsStateChange(CommunicationsEvent e) {
 250        if (e.getState() == CommunicationsEvent.AFTER_DISCONNECT ||
 251                e.getState() == CommunicationsEvent.CONNECTION_ERROR) {
 252            handleDisconnected();
 253        } if ((e.getState() == CommunicationsEvent.AFTER_CONNECT) && (fState != TargetNodeState.CONNECTING)) {
 254            handleConnected();
 255        }
 256    }
 257
 258    /* (non-Javadoc)
 259     * @see org.eclipse.rse.core.subsystems.ICommunicationsListener#isPassiveCommunicationsListener()
 260     */
 261    @Override
 262    public boolean isPassiveCommunicationsListener() {
 263        return true;
 264    }
 265
 266    /*
 267     * (non-Javadoc)
 268     * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.TraceControlComponent#dispose()
 269     */
 270    @Override
 271    public void dispose() {
 272        fRemoteProxy.removeCommunicationListener(this);
 273    }
 274
 275    /**
 276     * Method to connect this node component to the remote target node.
 277     */
 278    public void connect() {
 279        if (fState == TargetNodeState.DISCONNECTED) {
 280            try {
 281                setTargetNodeState(TargetNodeState.CONNECTING);
 282                fRemoteProxy.connect(new IRSECallback() {
 283                    @Override
 284                    public void done(IStatus status, Object result) {
 285                        // Note: result might be null!
 286                        if(status.isOK()) {
 287                            handleConnected();
 288                        } else {
 289                            handleDisconnected();
 290                        }
 291                    }
 292                });
 293            } catch (Exception e) {
 294                setTargetNodeState(TargetNodeState.DISCONNECTED);
 295                Activator.getDefault().logError(Messages.TraceControl_ConnectionFailure + " (" + getName() + "). \n", e); //$NON-NLS-1$ //$NON-NLS-2$
 296            }
 297        }
 298     }
 299
 300    /**
 301     * Method to disconnect this node component to the remote target node.
 302     */
 303     public void disconnect() {
 304         if (fState == TargetNodeState.CONNECTED) {
 305             try {
 306                 setTargetNodeState(TargetNodeState.DISCONNECTING);
 307                 fRemoteProxy.disconnect();
 308             } catch (Exception e) {
 309                 Activator.getDefault().logError(Messages.TraceControl_DisconnectionFailure + " (" + getName() + "). \n", e); //$NON-NLS-1$ //$NON-NLS-2$
 310             } finally {
 311                 handleDisconnected();
 312             }
 313         }
 314     }
 315
 316     /**
 317      * Retrieves the trace configuration from the target node and populates the
 318      * information in the tree model. The execution is done in a own job.
 319      */
 320     public void getConfigurationFromNode() {
 321         Job job = new Job(Messages.TraceControl_RetrieveNodeConfigurationJob) {
 322             @Override
 323             protected IStatus run(IProgressMonitor monitor) {
 324
 325                 try {
 326                     // Get provider information from node
 327                     TraceProviderGroup providerGroup = new TraceProviderGroup(Messages.TraceControl_ProviderDisplayName, TargetNodeComponent.this);
 328                     addChild(providerGroup);
 329                     providerGroup.getProviderFromNode(monitor);
 330
 331                     // Get session information from node
 332                     TraceSessionGroup sessionGroup = new TraceSessionGroup(Messages.TraceControl_AllSessionsDisplayName, TargetNodeComponent.this);
 333                     addChild(sessionGroup);
 334                     sessionGroup.getSessionsFromNode(monitor);
 335                 } catch (ExecutionException e) {
 336                     removeAllChildren();
 337                     return new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.TraceControl_RetrieveNodeConfigurationFailure, e);
 338                 }
 339
 340                 return Status.OK_STATUS;
 341             }
 342         };
 343         job.setUser(true);
 344         job.schedule();
 345     }
 346
 347     /**
 348      * Refresh the node configuration
 349      */
 350     public void refresh() {
 351         removeAllChildren();
 352         getConfigurationFromNode();
 353     }
 354
 355     /**
 356      * Deregisters host from registry.
 357      */
 358     public void deregister() {
 359         ISystemRegistry registry = RSECorePlugin.getTheSystemRegistry();
 360         registry.deleteHost(fHost);
 361     }
 362
 363     // ------------------------------------------------------------------------
 364     // Helper function
 365     // ------------------------------------------------------------------------
 366     /**
 367      * @return returns the control service for LTTng specific commands.
 368      * @throws ExecutionException
 369      */
 370     private ILttngControlService createControlService() throws ExecutionException {
 371         if (fShell == null) {
 372             fShell = fRemoteProxy.createCommandShell();
 373             fRemoteProxy.addCommunicationListener(this);
 374         }
 375         fService = LTTngControlServiceFactory.getInstance().getLttngControlService(fShell);
 376         return fService;
 377     }
 378
 379     /**
 380      * Handles the connected event.
 381      */
 382     private void handleConnected() {
 383         setTargetNodeState(TargetNodeState.CONNECTED);
 384         try {
 385             createControlService();
 386             getConfigurationFromNode();
 387         } catch (final ExecutionException e) {
 388             // Disconnect only if no control service, otherwise stay connected.
 389             if (getControlService() == null) {
 390                 disconnect();
 391             }
 392
 393             // Notify user
 394             Display.getDefault().asyncExec(new Runnable() {
 395                 @Override
 396                 public void run() {
 397                     ErrorDialog er = new ErrorDialog(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(),
 398                             Messages.TraceControl_ErrorTitle, Messages.TraceControl_RetrieveNodeConfigurationFailure,
 399                             new Status(IStatus.ERROR, Activator.PLUGIN_ID, e.getMessage(), e),
 400                             IStatus.ERROR);
 401                     er.open();
 402                 }
 403             });
 404             Activator.getDefault().logError(Messages.TraceControl_RetrieveNodeConfigurationFailure + " (" + getName() + "). \n", e); //$NON-NLS-1$ //$NON-NLS-2$
 405         }
 406     }
 407
 408     /**
 409      * Handles the disconnected event.
 410      */
 411     private void handleDisconnected() {
 412         removeAllChildren();
 413         setTargetNodeState(TargetNodeState.DISCONNECTED);
 414         fShell = null;
 415         fService = null;
 416     }
 417 }