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   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  *   Markus Schorn - Bug 448058: Use org.eclipse.remote in favor of RSE
  13  *   Bernd Hufmann - Update to org.eclipse.remote API 2.0
  14  **********************************************************************/
  15 package org.eclipse.tracecompass.internal.lttng2.control.ui.views.model.impl;
  16
  17 import static java.text.MessageFormat.format;
  18 import static org.eclipse.tracecompass.common.core.NonNullUtils.checkNotNull;
  19
  20 import java.util.List;
  21
  22 import org.eclipse.core.commands.ExecutionException;
  23 import org.eclipse.core.runtime.IProgressMonitor;
  24 import org.eclipse.core.runtime.IStatus;
  25 import org.eclipse.core.runtime.Status;
  26 import org.eclipse.core.runtime.jobs.IJobChangeEvent;
  27 import org.eclipse.core.runtime.jobs.Job;
  28 import org.eclipse.core.runtime.jobs.JobChangeAdapter;
  29 import org.eclipse.jdt.annotation.NonNull;
  30 import org.eclipse.jdt.annotation.Nullable;
  31 import org.eclipse.jface.dialogs.ErrorDialog;
  32 import org.eclipse.remote.core.IRemoteConnection;
  33 import org.eclipse.remote.core.IRemoteConnectionChangeListener;
  34 import org.eclipse.remote.core.RemoteConnectionChangeEvent;
  35 import org.eclipse.swt.graphics.Image;
  36 import org.eclipse.swt.widgets.Display;
  37 import org.eclipse.tracecompass.internal.lttng2.control.core.model.TargetNodeState;
  38 import org.eclipse.tracecompass.internal.lttng2.control.ui.Activator;
  39 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.messages.Messages;
  40 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.model.ITraceControlComponent;
  41 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.property.TargetNodePropertySource;
  42 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.service.ILttngControlService;
  43 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.service.LTTngControlServiceFactory;
  44 import org.eclipse.tracecompass.tmf.remote.core.proxy.RemoteSystemProxy;
  45 import org.eclipse.tracecompass.tmf.remote.core.shell.ICommandShell;
  46 import org.eclipse.ui.PlatformUI;
  47 import org.eclipse.ui.views.properties.IPropertySource;
  48
  49 /**
  50  * <p>
  51  * Implementation of the trace node component.
  52  * </p>
  53  *
  54  * @author Bernd Hufmann
  55  */
  56 public class TargetNodeComponent extends TraceControlComponent implements IRemoteConnectionChangeListener {
  57
  58     // ------------------------------------------------------------------------
  59     // Constants
  60     // ------------------------------------------------------------------------
  61
  62     /**
  63      * Path to icon file for this component (state connected).
  64      */
  65     public static final String TARGET_NODE_CONNECTED_ICON_FILE = "icons/obj16/target_connected.gif"; //$NON-NLS-1$
  66     /**
  67      * Path to icon file for this component (state disconnected).
  68      */
  69     public static final String TARGET_NODE_DISCONNECTED_ICON_FILE = "icons/obj16/target_disconnected.gif"; //$NON-NLS-1$
  70
  71     private static final ILttngControlService NULL_CONTROL_SERVICE = new NullControlService();
  72
  73     // ------------------------------------------------------------------------
  74     // Attributes
  75     // ------------------------------------------------------------------------
  76
  77     /**
  78      * The node connection state.
  79      */
  80     private TargetNodeState fState = TargetNodeState.DISCONNECTED;
  81     /**
  82      * The image to be displayed in state disconnected.
  83      */
  84     private Image fDisconnectedImage = null;
  85     /**
  86      * The remote proxy implementation.
  87      */
  88     private @NonNull RemoteSystemProxy fRemoteProxy;
  89     /**
  90      * The control service for LTTng specific commands.
  91      */
  92     private ILttngControlService fService = null;
  93     /**
  94      * The command shell for issuing commands.
  95      */
  96     private ICommandShell fShell = null;
  97
  98     // ------------------------------------------------------------------------
  99     // Constructors
 100     // ------------------------------------------------------------------------
 101
 102     /**
 103      * Constructor
 104      *
 105      * @param name
 106      *            the name of the component
 107      * @param parent
 108      *            the parent of the component
 109      * @param proxy
 110      *            the remote proxy implementation
 111      */
 112     public TargetNodeComponent(String name, ITraceControlComponent parent, @NonNull RemoteSystemProxy proxy) {
 113         super(name, parent);
 114         setImage(TARGET_NODE_CONNECTED_ICON_FILE);
 115         fDisconnectedImage = Activator.getDefault().loadIcon(TARGET_NODE_DISCONNECTED_ICON_FILE);
 116         fRemoteProxy = proxy;
 117         fRemoteProxy.getRemoteConnection().addConnectionChangeListener(this);
 118         setToolTip(fRemoteProxy.getRemoteConnection().getName());
 119     }
 120
 121     /**
 122      * Constructor (using default proxy)
 123      *
 124      * @param name
 125      *            the name of the component
 126      * @param parent
 127      *            the parent of the component
 128      * @param host
 129      *            the host connection implementation
 130      */
 131     public TargetNodeComponent(String name, ITraceControlComponent parent, @NonNull IRemoteConnection host) {
 132         this(name, parent, new RemoteSystemProxy(host));
 133     }
 134
 135     @Override
 136     public void dispose() {
 137         fRemoteProxy.getRemoteConnection().removeConnectionChangeListener(this);
 138         fRemoteProxy.dispose();
 139         disposeControlService();
 140     }
 141
 142     private void disposeControlService() {
 143         fService = null;
 144         final ICommandShell shell = fShell;
 145         if (shell != null) {
 146             shell.dispose();
 147             fShell = null;
 148         }
 149     }
 150
 151     // ------------------------------------------------------------------------
 152     // Accessors
 153     // ------------------------------------------------------------------------
 154
 155     @Override
 156     public Image getImage() {
 157         if (fState == TargetNodeState.CONNECTED) {
 158             return super.getImage();
 159         }
 160         return fDisconnectedImage;
 161     }
 162
 163     @Override
 164     public TargetNodeState getTargetNodeState() {
 165         return fState;
 166     }
 167
 168     @Override
 169     public void setTargetNodeState(TargetNodeState state) {
 170         fState = state;
 171         fireComponentChanged(TargetNodeComponent.this);
 172     }
 173
 174     @Override
 175     public ILttngControlService getControlService() {
 176         return fService == null ? NULL_CONTROL_SERVICE : fService;
 177     }
 178
 179     @Override
 180     public void setControlService(ILttngControlService service) {
 181         fService = service;
 182     }
 183
 184     @Override
 185     public <T> @Nullable T getAdapter(Class<T> adapter) {
 186         if (adapter == IPropertySource.class) {
 187             return adapter.cast(new TargetNodePropertySource(this));
 188         }
 189         return null;
 190     }
 191
 192     /**
 193      * @return remote system proxy implementation
 194      */
 195     public @NonNull RemoteSystemProxy getRemoteSystemProxy() {
 196         return fRemoteProxy;
 197     }
 198
 199     /**
 200      * @return all available sessions.
 201      */
 202     public TraceSessionComponent[] getSessions() {
 203         List<ITraceControlComponent> compenents = getChildren(TraceSessionGroup.class);
 204         if (compenents.size() > 0) {
 205             TraceSessionGroup group = (TraceSessionGroup)compenents.get(0);
 206             List<ITraceControlComponent> sessions = group.getChildren(TraceSessionComponent.class);
 207             return sessions.toArray(new TraceSessionComponent[sessions.size()]);
 208         }
 209         return new TraceSessionComponent[0];
 210     }
 211
 212     /**
 213      * @return node version
 214      */
 215     public String getNodeVersion() {
 216         // Control service is null during connection to node
 217         if (getControlService() != NULL_CONTROL_SERVICE) {
 218             return getControlService().getVersionString();
 219         }
 220         return ""; //$NON-NLS-1$
 221     }
 222
 223     /**
 224      * Returns if node supports filtering of events
 225      * @return <code>true</code> if node supports filtering else <code>false</code>
 226      */
 227     public boolean isEventFilteringSupported() {
 228         return getControlService().isVersionSupported("2.1.0"); //$NON-NLS-1$
 229     }
 230
 231     /**
 232      * Returns if node supports networks streaming or not
 233      * @return <code>true</code> if node supports filtering else <code>false</code>
 234      *
 235      */
 236     public boolean isNetworkStreamingSupported() {
 237         return getControlService().isVersionSupported("2.1.0"); //$NON-NLS-1$
 238     }
 239
 240     /**
 241      * Returns if node supports configuring buffer type  or not
 242      * @return <code>true</code> if node supports buffer type configuration else <code>false</code>
 243      */
 244     public boolean isBufferTypeConfigSupported() {
 245         return getControlService().isVersionSupported("2.2.0"); //$NON-NLS-1$
 246     }
 247
 248     /**
 249      * Returns if node supports trace file rotation or not
 250      * @return <code>true</code> if node supports trace file rotation else <code>false</code>
 251      */
 252     public boolean isTraceFileRotationSupported() {
 253         return getControlService().isVersionSupported("2.2.0"); //$NON-NLS-1$
 254     }
 255
 256     /**
 257      * Returns if node supports periodical flush for metadata or not
 258      * @return <code>true</code> if node supports periodical flush for metadata else <code>false</code>
 259      */
 260     public boolean isPeriodicalMetadataFlushSupported() {
 261         return getControlService().isVersionSupported("2.2.0"); //$NON-NLS-1$
 262     }
 263     /**
 264      * Returns if node supports snapshots or not
 265      * @return <code>true</code> if it supports snapshots else <code>false</code>
 266      *
 267      */
 268     public boolean isSnapshotSupported() {
 269         return getControlService().isVersionSupported("2.3.0"); //$NON-NLS-1$
 270     }
 271     /**
 272      * Returns if node supports live or not
 273      * @return <code>true</code> if it supports live else <code>false</code>
 274      *
 275      */
 276     public boolean isLiveSupported() {
 277         return getControlService().isVersionSupported("2.4.0"); //$NON-NLS-1$;
 278     }
 279     /**
 280      * Returns if node supports adding contexts on event
 281      * @return <code>true</code> if it supports adding contexts on events else <code>false</code>
 282      *
 283      */
 284     public boolean isContextOnEventSupported() {
 285         return !getControlService().isVersionSupported("2.2.0"); //$NON-NLS-1$
 286     }
 287
 288     /**
 289      * Checks if given version is supported by this ILTTngControlService implementation.
 290      *
 291      * @param version The version to check
 292      * @return <code>true</code> if version is supported else <code>false</code>
 293      */
 294     public boolean isVersionSupported(String version) {
 295         return getControlService().isVersionSupported(version);
 296     }
 297
 298     // ------------------------------------------------------------------------
 299     // Operations
 300     // ------------------------------------------------------------------------
 301
 302     @Override
 303     public void connectionChanged(RemoteConnectionChangeEvent e) {
 304         if (fState == TargetNodeState.CONNECTING) {
 305             return;
 306         }
 307
 308         switch (e.getType()) {
 309         case RemoteConnectionChangeEvent.CONNECTION_CLOSED:
 310         case RemoteConnectionChangeEvent.CONNECTION_ABORTED:
 311             handleDisconnected();
 312             break;
 313         case RemoteConnectionChangeEvent.CONNECTION_OPENED:
 314             handleConnected();
 315             break;
 316         default:
 317             break;
 318         }
 319     }
 320
 321     /**
 322      * Method to connect this node component to the remote target node.
 323      */
 324     public void connect() {
 325         if (fState == TargetNodeState.DISCONNECTED) {
 326             try {
 327                 setTargetNodeState(TargetNodeState.CONNECTING);
 328                 Job job = new Job(format(Messages.TraceControl_OpenConnectionTo, getName())) {
 329                     @Override
 330                     protected IStatus run(IProgressMonitor monitor) {
 331                         try {
 332                             fRemoteProxy.connect(checkNotNull(monitor));
 333                             return Status.OK_STATUS;
 334                         } catch (Exception e) {
 335                             return new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.TraceControl_ConnectionFailure, e);
 336                         }
 337                     }
 338                 };
 339                 job.addJobChangeListener(new JobChangeAdapter() {
 340                     @Override
 341                     public void done(IJobChangeEvent event) {
 342                         IStatus status = event.getResult();
 343                         if (status.isOK()) {
 344                             handleConnected();
 345                         } else {
 346                             handleDisconnected();
 347                             if (status.getSeverity() != IStatus.CANCEL) {
 348                                 Activator.getDefault().getLog().log(status);
 349                             }
 350                         }
 351                     }
 352                 });
 353                 job.schedule();
 354             } catch (Exception e) {
 355                 setTargetNodeState(TargetNodeState.DISCONNECTED);
 356                 Activator.getDefault().logError(Messages.TraceControl_ConnectionFailure + " (" + getName() + "). \n", e); //$NON-NLS-1$ //$NON-NLS-2$
 357             }
 358         }
 359     }
 360
 361     /**
 362      * Method to disconnect this node component to the remote target node.
 363      */
 364     public void disconnect() {
 365         if (fState == TargetNodeState.CONNECTED) {
 366             try {
 367                 setTargetNodeState(TargetNodeState.DISCONNECTING);
 368                 fRemoteProxy.disconnect();
 369             } catch (Exception e) {
 370                 Activator.getDefault().logError(Messages.TraceControl_DisconnectionFailure + " (" + getName() + "). \n", e); //$NON-NLS-1$ //$NON-NLS-2$
 371             } finally {
 372                 handleDisconnected();
 373             }
 374         }
 375     }
 376
 377     /**
 378      * Retrieves the trace configuration from the target node and populates the
 379      * information in the tree model. The execution is done in a own job.
 380      */
 381     public void getConfigurationFromNode() {
 382         Job job = new Job(Messages.TraceControl_RetrieveNodeConfigurationJob) {
 383             @Override
 384             protected IStatus run(IProgressMonitor monitor) {
 385
 386                 try {
 387                     // Get provider information from node
 388                     TraceProviderGroup providerGroup = new TraceProviderGroup(Messages.TraceControl_ProviderDisplayName, TargetNodeComponent.this);
 389                     addChild(providerGroup);
 390
 391                     // Get session information from node
 392                     TraceSessionGroup sessionGroup = new TraceSessionGroup(Messages.TraceControl_AllSessionsDisplayName, TargetNodeComponent.this);
 393                     addChild(sessionGroup);
 394
 395                     providerGroup.getProviderFromNode(monitor);
 396                     sessionGroup.getSessionsFromNode(monitor);
 397                 } catch (ExecutionException e) {
 398                     removeAllChildren();
 399                     return new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.TraceControl_RetrieveNodeConfigurationFailure, e);
 400                 }
 401
 402                 return Status.OK_STATUS;
 403             }
 404         };
 405         job.setUser(true);
 406         job.schedule();
 407     }
 408
 409     /**
 410      * Refresh the node configuration
 411      */
 412     public void refresh() {
 413         removeAllChildren();
 414         getConfigurationFromNode();
 415     }
 416
 417     // ------------------------------------------------------------------------
 418     // Helper function
 419     // ------------------------------------------------------------------------
 420
 421     /**
 422      * @return returns the control service for LTTng specific commands.
 423      * @throws ExecutionException
 424      */
 425     private ILttngControlService createControlService() throws ExecutionException {
 426         if (fService == null) {
 427             try {
 428                 ICommandShell shell = fRemoteProxy.createCommandShell();
 429                 fShell = shell;
 430                 fService = LTTngControlServiceFactory.getLttngControlService(shell);
 431             } catch (ExecutionException e) {
 432                 disposeControlService();
 433                 throw e;
 434             }
 435         }
 436         return fService;
 437     }
 438
 439     /**
 440      * Handles the connected event.
 441      */
 442     private void handleConnected() {
 443         try {
 444             createControlService();
 445             getConfigurationFromNode();
 446             // Set connected only after the control service has been created and the jobs for creating the
 447             // sub-nodes are scheduled.
 448             setTargetNodeState(TargetNodeState.CONNECTED);
 449         } catch (final ExecutionException e) {
 450             // Disconnect only if no control service, otherwise stay connected.
 451             if (getControlService() == NULL_CONTROL_SERVICE) {
 452                 fState = TargetNodeState.CONNECTED;
 453                 disconnect();
 454             }
 455
 456             // Notify user
 457             Display.getDefault().asyncExec(new Runnable() {
 458                 @Override
 459                 public void run() {
 460                     ErrorDialog er = new ErrorDialog(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(),
 461                             Messages.TraceControl_ErrorTitle, Messages.TraceControl_RetrieveNodeConfigurationFailure,
 462                             new Status(IStatus.ERROR, Activator.PLUGIN_ID, e.getMessage(), e),
 463                             IStatus.ERROR);
 464                     er.open();
 465                 }
 466             });
 467             Activator.getDefault().logError(Messages.TraceControl_RetrieveNodeConfigurationFailure + " (" + getName() + "). \n", e); //$NON-NLS-1$ //$NON-NLS-2$
 468         }
 469     }
 470
 471     /**
 472      * Handles the disconnected event.
 473      */
 474     private void handleDisconnected() {
 475         disposeControlService();
 476         setTargetNodeState(TargetNodeState.DISCONNECTED);
 477         removeAllChildren();
 478     }
 479
 480     @Override
 481     public void addChild(ITraceControlComponent component) {
 482         if (getTargetNodeState() == TargetNodeState.DISCONNECTED) {
 483             return;
 484         }
 485         super.addChild(component);
 486     }
 487 }