org.eclipse.linuxtools.lttng2.control.ui/src/org/eclipse/linuxtools/internal/lttng2/control/ui/views/handlers/BaseEnableEventHandler.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.control.ui.views.handlers;
  14
  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.LogLevelType;
  25 import org.eclipse.linuxtools.internal.lttng2.control.core.model.TraceLogLevel;
  26 import org.eclipse.linuxtools.internal.lttng2.control.ui.Activator;
  27 import org.eclipse.linuxtools.internal.lttng2.control.ui.views.dialogs.IEnableEventsDialog;
  28 import org.eclipse.linuxtools.internal.lttng2.control.ui.views.dialogs.TraceControlDialogFactory;
  29 import org.eclipse.linuxtools.internal.lttng2.control.ui.views.messages.Messages;
  30 import org.eclipse.linuxtools.internal.lttng2.control.ui.views.model.ITraceControlComponent;
  31 import org.eclipse.linuxtools.internal.lttng2.control.ui.views.model.impl.TargetNodeComponent;
  32 import org.eclipse.linuxtools.internal.lttng2.control.ui.views.model.impl.TraceDomainComponent;
  33 import org.eclipse.linuxtools.internal.lttng2.control.ui.views.model.impl.TraceProviderGroup;
  34 import org.eclipse.ui.IWorkbenchWindow;
  35 import org.eclipse.ui.PlatformUI;
  36
  37 /**
  38  * <p>
  39  * Base command handler implementation to enable events.
  40  * </p>
  41  *
  42  * @author Bernd Hufmann
  43  */
  44 public abstract class BaseEnableEventHandler extends BaseControlViewHandler {
  45
  46     // ------------------------------------------------------------------------
  47     // Attributes
  48     // ------------------------------------------------------------------------
  49     /**
  50      * The command execution parameter.
  51      */
  52     protected CommandParameter fParam = null;
  53
  54     // ------------------------------------------------------------------------
  55     // Operations
  56     // ------------------------------------------------------------------------
  57
  58     /**
  59      * Enables a list of events for given parameters.
  60      *
  61      * @param param
  62      *            - a parameter instance with data for the command execution
  63      * @param eventNames
  64      *            - list of event names
  65      * @param isKernel
  66      *            - true if kernel domain else false
  67      * @param filterExpression
  68      *            - a filter expression
  69      * @param monitor
  70      *            - a progress monitor
  71      * @throws ExecutionException
  72      *             If the command fails for some reason
  73      */
  74     public abstract void enableEvents(CommandParameter param, List<String> eventNames, boolean isKernel, String filterExpression, IProgressMonitor monitor) throws ExecutionException;
  75
  76     /**
  77      * Enables all syscall events.
  78      *
  79      * @param param
  80      *            - a parameter instance with data for the command execution
  81      * @param monitor
  82      *            - a progress monitor
  83      * @throws ExecutionException
  84      *             If the command fails for some reason
  85      */
  86     public abstract void enableSyscalls(CommandParameter param, IProgressMonitor monitor) throws ExecutionException;
  87
  88     /**
  89      * Enables a dynamic probe.
  90      *
  91      * @param param
  92      *            - a parameter instance with data for the command execution
  93      * @param eventName
  94      *            - a event name
  95      * @param isFunction
  96      *            - true for dynamic function entry/return probe else false
  97      * @param probe
  98      *            - a dynamic probe information
  99      * @param monitor
 100      *            - a progress monitor
 101      * @throws ExecutionException
 102      *             If the command fails for some reason
 103      */
 104     public abstract void enableProbe(CommandParameter param, String eventName, boolean isFunction, String probe, IProgressMonitor monitor) throws ExecutionException;
 105
 106     /**
 107      * Enables events using log level
 108      *
 109      * @param param
 110      *            - a parameter instance with data for the command execution
 111      * @param eventName
 112      *            - a event name
 113      * @param logLevelType
 114      *            - a log level type
 115      * @param level
 116      *            - a log level
 117      * @param filterExpression
 118      *            - a filter expression
 119      * @param monitor
 120      *            - a progress monitor
 121      * @throws ExecutionException
 122      *             If the command fails for some reason
 123      */
 124     public abstract void enableLogLevel(CommandParameter param, String eventName, LogLevelType logLevelType, TraceLogLevel level, String filterExpression, IProgressMonitor monitor) throws ExecutionException;
 125
 126     /**
 127      * @param param
 128      *            - a parameter instance with data for the command execution
 129      * @return returns the relevant domain (null if domain is not known)
 130      */
 131     public abstract TraceDomainComponent getDomain(CommandParameter param);
 132
 133     @Override
 134     public Object execute(ExecutionEvent event) throws ExecutionException {
 135
 136         final IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
 137
 138         if (window == null) {
 139             return false;
 140         }
 141         fLock.lock();
 142         try {
 143             // Make a copy for thread safety
 144             final CommandParameter param = fParam.clone();
 145
 146             TargetNodeComponent node = param.getSession().getTargetNode();
 147             List<ITraceControlComponent> providers = node.getChildren(TraceProviderGroup.class);
 148
 149             final IEnableEventsDialog dialog = TraceControlDialogFactory.getInstance().getEnableEventsDialog();
 150             dialog.setTraceProviderGroup((TraceProviderGroup)providers.get(0));
 151             dialog.setTraceDomainComponent(getDomain(param));
 152
 153             if (dialog.open() != Window.OK) {
 154                 return null;
 155             }
 156
 157             Job job = new Job(Messages.TraceControl_ChangeEventStateJob) {
 158                 @Override
 159                 protected IStatus run(IProgressMonitor monitor) {
 160                     Exception error = null;
 161
 162                     try {
 163                         String filter = dialog.getFilterExpression();
 164
 165                         // Enable tracepoint events
 166                         if (dialog.isTracepoints()) {
 167                             if (dialog.isAllTracePoints()) {
 168                                 enableEvents(param, null, dialog.isKernel(), filter, monitor);
 169                             } else {
 170                                 List<String> eventNames = dialog.getEventNames();
 171                                 if (!eventNames.isEmpty()) {
 172                                     enableEvents(param, eventNames, dialog.isKernel(), filter, monitor);
 173                                 }
 174                             }
 175                         }
 176
 177                         // Enable syscall events
 178                         if (dialog.isAllSysCalls()) {
 179                             enableSyscalls(param, monitor);
 180                         }
 181
 182                         // Enable dynamic probe
 183                         if (dialog.isDynamicProbe() && (dialog.getProbeEventName() != null) && (dialog.getProbeName() != null)) {
 184                             enableProbe(param, dialog.getProbeEventName(), false, dialog.getProbeName(), monitor);
 185                         }
 186
 187                         // Enable dynamic function probe
 188                         if (dialog.isDynamicFunctionProbe() && (dialog.getFunctionEventName() != null) && (dialog.getFunction() != null)) {
 189                             enableProbe(param, dialog.getFunctionEventName(), true, dialog.getFunction(), monitor);
 190                         }
 191
 192                         // Enable event using a wildcard
 193                         if (dialog.isWildcard()) {
 194                             List<String> eventNames = dialog.getEventNames();
 195                             eventNames.add(dialog.getWildcard());
 196
 197                             if (!eventNames.isEmpty()) {
 198                                 enableEvents(param, eventNames, dialog.isKernel(), filter, monitor);
 199                             }
 200                         }
 201
 202                         // Enable events using log level
 203                         if (dialog.isLogLevel()) {
 204                             enableLogLevel(param, dialog.getLogLevelEventName(), dialog.getLogLevelType(), dialog.getLogLevel(), filter, monitor);
 205                         }
 206
 207                     } catch (ExecutionException e) {
 208                         error = e;
 209                     }
 210
 211                     // refresh in all cases
 212                     refresh(param);
 213
 214                     if (error != null) {
 215                         return new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.TraceControl_ChangeEventStateFailure, error);
 216                     }
 217                     return Status.OK_STATUS;
 218                 }
 219             };
 220             job.setUser(true);
 221             job.schedule();
 222         } finally {
 223             fLock.unlock();
 224         }
 225         return null;
 226     }
 227 }