org.eclipse.tracecompass.lttng2.control.ui/src/org/eclipse/tracecompass/internal/lttng2/control/ui/views/remote/RemoteSystemProxy.java

   1 /**********************************************************************
   2  * Copyright (c) 2012, 2014 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  *   Markus Schorn - Bug 448058: Use org.eclipse.remote in favor of RSE
  12  **********************************************************************/
  13 package org.eclipse.tracecompass.internal.lttng2.control.ui.views.remote;
  14
  15 import org.eclipse.core.commands.ExecutionException;
  16 import org.eclipse.core.runtime.IProgressMonitor;
  17 import org.eclipse.remote.core.IRemoteConnection;
  18 import org.eclipse.remote.core.IRemoteConnectionChangeEvent;
  19 import org.eclipse.remote.core.IRemoteConnectionChangeListener;
  20 import org.eclipse.remote.core.IRemoteFileManager;
  21 import org.eclipse.remote.core.IRemoteProcessBuilder;
  22 import org.eclipse.remote.core.exception.RemoteConnectionException;
  23
  24 /**
  25  * <p>
  26  * RemoteSystemProxy implementation.
  27  * </p>
  28  *
  29  * @author Bernd Hufmann
  30  */
  31 public class RemoteSystemProxy implements IRemoteSystemProxy, IRemoteConnectionChangeListener {
  32
  33     // ------------------------------------------------------------------------
  34     // Attributes
  35     // ------------------------------------------------------------------------
  36
  37     private IRemoteConnection fHost;
  38     private boolean fExplicitConnect;
  39
  40     // ------------------------------------------------------------------------
  41     // Constructors
  42     // ------------------------------------------------------------------------
  43
  44     /**
  45      * Constructor
  46      *
  47      * @param host
  48      *            The host of this proxy
  49      */
  50     public RemoteSystemProxy(IRemoteConnection host) {
  51         fHost = host;
  52         fHost.addConnectionChangeListener(this);
  53     }
  54
  55     // ------------------------------------------------------------------------
  56     // Operations
  57     // ------------------------------------------------------------------------
  58
  59     @Override
  60     public IRemoteFileManager getFileServiceSubSystem() {
  61         return fHost.getFileManager();
  62     }
  63
  64     @Override
  65     public IRemoteProcessBuilder getProcessBuilder(String...command) {
  66         return fHost.getProcessBuilder(command);
  67     }
  68
  69     @Override
  70     public void connect(IProgressMonitor monitor) throws ExecutionException {
  71         try {
  72             if (!fHost.isOpen()) {
  73                 fExplicitConnect = true;
  74                 fHost.open(monitor);
  75             }
  76         } catch (RemoteConnectionException e) {
  77             throw new ExecutionException("Cannot connect " + fHost.getName(), e); //$NON-NLS-1$
  78         }
  79     }
  80
  81     @Override
  82     public void disconnect() throws ExecutionException {
  83         fHost.close();
  84     }
  85
  86     @Override
  87     public void dispose() {
  88         fHost.removeConnectionChangeListener(this);
  89         if (fExplicitConnect) {
  90             fHost.close();
  91         }
  92     }
  93
  94     @Override
  95     public ICommandShell createCommandShell() throws ExecutionException {
  96         ICommandShell shell = new CommandShell(fHost);
  97         shell.connect();
  98         return shell;
  99     }
 100
 101     @Override
 102     public void addConnectionChangeListener(IRemoteConnectionChangeListener listener) {
 103         fHost.addConnectionChangeListener(listener);
 104     }
 105
 106     @Override
 107     public void removeConnectionChangeListener(IRemoteConnectionChangeListener listener) {
 108         fHost.removeConnectionChangeListener(listener);
 109     }
 110
 111     @Override
 112     public boolean isConnected() {
 113         return fHost.isOpen();
 114     }
 115
 116     @Override
 117     public void connectionChanged(IRemoteConnectionChangeEvent event) {
 118         int type = event.getType();
 119         if (type == IRemoteConnectionChangeEvent.CONNECTION_ABORTED ||
 120                 type == IRemoteConnectionChangeEvent.CONNECTION_CLOSED) {
 121             fExplicitConnect = false;
 122         }
 123     }
 124 }