| 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 | **********************************************************************/ |
| 12 | package org.eclipse.linuxtools.internal.lttng2.control.ui.views.handlers; |
| 13 | |
| 14 | import java.util.ArrayList; |
| 15 | import java.util.List; |
| 16 | |
| 17 | import org.eclipse.core.commands.ExecutionEvent; |
| 18 | import org.eclipse.core.commands.ExecutionException; |
| 19 | import org.eclipse.core.runtime.IProgressMonitor; |
| 20 | import org.eclipse.core.runtime.IStatus; |
| 21 | import org.eclipse.core.runtime.Status; |
| 22 | import org.eclipse.core.runtime.jobs.Job; |
| 23 | import org.eclipse.jface.window.Window; |
| 24 | import org.eclipse.linuxtools.internal.lttng2.control.core.model.IChannelInfo; |
| 25 | import org.eclipse.linuxtools.internal.lttng2.control.ui.Activator; |
| 26 | import org.eclipse.linuxtools.internal.lttng2.control.ui.views.dialogs.IEnableChannelDialog; |
| 27 | import org.eclipse.linuxtools.internal.lttng2.control.ui.views.dialogs.TraceControlDialogFactory; |
| 28 | import org.eclipse.linuxtools.internal.lttng2.control.ui.views.messages.Messages; |
| 29 | import org.eclipse.linuxtools.internal.lttng2.control.ui.views.model.impl.TraceDomainComponent; |
| 30 | |
| 31 | /** |
| 32 | * <p> |
| 33 | * Base implementation of a command handler to enable a trace channel. |
| 34 | * </p> |
| 35 | * |
| 36 | * @author Bernd Hufmann |
| 37 | */ |
| 38 | abstract class BaseEnableChannelHandler extends BaseControlViewHandler { |
| 39 | |
| 40 | // ------------------------------------------------------------------------ |
| 41 | // Attributes |
| 42 | // ------------------------------------------------------------------------ |
| 43 | protected CommandParameter fParam; |
| 44 | |
| 45 | // ------------------------------------------------------------------------ |
| 46 | // Operations |
| 47 | // ------------------------------------------------------------------------ |
| 48 | |
| 49 | /** |
| 50 | * Enables channels with given names which are part of this domain. If a |
| 51 | * given channel doesn't exists it creates a new channel with the given |
| 52 | * parameters (or default values if given parameter is null). |
| 53 | * |
| 54 | * @param param |
| 55 | * - a parameter instance with data for the command execution |
| 56 | * @param channelNames |
| 57 | * - a list of channel names to enable on this domain |
| 58 | * @param info |
| 59 | * - channel information to set for the channel (use null for |
| 60 | * default) |
| 61 | * @param isKernel |
| 62 | * - a flag for indicating kernel or UST. |
| 63 | * @param monitor |
| 64 | * - a progress monitor |
| 65 | * @throws ExecutionException |
| 66 | * If something goes wrong when enabling the channel |
| 67 | */ |
| 68 | public abstract void enableChannel(CommandParameter param, |
| 69 | List<String> channelNames, IChannelInfo info, boolean isKernel, |
| 70 | IProgressMonitor monitor) throws ExecutionException; |
| 71 | |
| 72 | /** |
| 73 | * @param param - a parameter instance with data for the command execution |
| 74 | * @return returns the relevant domain (null if domain is not known) |
| 75 | */ |
| 76 | public abstract TraceDomainComponent getDomain(CommandParameter param); |
| 77 | |
| 78 | @Override |
| 79 | public Object execute(ExecutionEvent event) throws ExecutionException { |
| 80 | fLock.lock(); |
| 81 | try { |
| 82 | final CommandParameter param = fParam.clone(); |
| 83 | |
| 84 | final IEnableChannelDialog dialog = TraceControlDialogFactory.getInstance().getEnableChannelDialog(); |
| 85 | dialog.setTargetNodeComponent(param.getSession().getTargetNode()); |
| 86 | dialog.setDomainComponent(getDomain(param)); |
| 87 | dialog.setHasKernel(param.getSession().hasKernelProvider()); |
| 88 | |
| 89 | if (dialog.open() != Window.OK) { |
| 90 | return null; |
| 91 | } |
| 92 | |
| 93 | Job job = new Job(Messages.TraceControl_CreateChannelStateJob) { |
| 94 | @Override |
| 95 | protected IStatus run(IProgressMonitor monitor) { |
| 96 | Exception error = null; |
| 97 | |
| 98 | List<String> channelNames = new ArrayList<>(); |
| 99 | channelNames.add(dialog.getChannelInfo().getName()); |
| 100 | |
| 101 | try { |
| 102 | enableChannel(param, channelNames, dialog.getChannelInfo(), dialog.isKernel(), monitor); |
| 103 | } catch (ExecutionException e) { |
| 104 | error = e; |
| 105 | } |
| 106 | |
| 107 | // refresh in all cases |
| 108 | refresh(param); |
| 109 | |
| 110 | if (error != null) { |
| 111 | return new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.TraceControl_CreateChannelStateFailure, error); |
| 112 | } |
| 113 | return Status.OK_STATUS; |
| 114 | } |
| 115 | }; |
| 116 | job.setUser(true); |
| 117 | job.schedule(); |
| 118 | } finally { |
| 119 | fLock.unlock(); |
| 120 | } |
| 121 | return null; |
| 122 | } |
| 123 | |
| 124 | } |