org.eclipse.tracecompass.tmf.remote.core/src/org/eclipse/tracecompass/internal/tmf/remote/core/Activator.java

   1 /*******************************************************************************
   2  * Copyright (c) 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  *******************************************************************************/
  12
  13 package org.eclipse.tracecompass.internal.tmf.remote.core;
  14
  15 import org.eclipse.core.runtime.IStatus;
  16 import org.eclipse.core.runtime.Plugin;
  17 import org.eclipse.core.runtime.Status;
  18 import org.eclipse.jdt.annotation.Nullable;
  19 import org.osgi.framework.BundleContext;
  20 import org.osgi.framework.ServiceReference;
  21
  22 /**
  23  * The activator class controls the plug-in life cycle
  24  */
  25 public final class Activator extends Plugin {
  26
  27     // ------------------------------------------------------------------------
  28     // Attributes
  29     // ------------------------------------------------------------------------
  30
  31     /**
  32      * The plug-in ID
  33      */
  34     public static final String PLUGIN_ID = "org.eclipse.tracecompass.tmf.remote.core"; //$NON-NLS-1$
  35
  36     /**
  37      * The shared instance
  38      */
  39     private static Activator plugin;
  40
  41     // ------------------------------------------------------------------------
  42     // Constructors
  43     // ------------------------------------------------------------------------
  44
  45     /**
  46      * The constructor
  47      */
  48     public Activator() {
  49     }
  50
  51     // ------------------------------------------------------------------------
  52     // Accessors
  53     // ------------------------------------------------------------------------
  54
  55     /**
  56      * Returns the shared instance
  57      *
  58      * @return the shared instance
  59      */
  60     public static Activator getDefault() {
  61         return plugin;
  62     }
  63
  64     // ------------------------------------------------------------------------
  65     // Operators
  66     // ------------------------------------------------------------------------
  67
  68     @Override
  69     public void start(BundleContext context) throws Exception {
  70         super.start(context);
  71         plugin = this;
  72     }
  73
  74     @Override
  75     public void stop(BundleContext context) throws Exception {
  76         plugin = null;
  77         super.stop(context);
  78     }
  79
  80     /**
  81      * Logs a message with severity INFO in the runtime log of the plug-in.
  82      *
  83      * @param message A message to log
  84      */
  85     public void logInfo(String message) {
  86         getLog().log(new Status(IStatus.INFO, PLUGIN_ID, message));
  87     }
  88
  89     /**
  90      * Logs a message and exception with severity INFO in the runtime log of the plug-in.
  91      *
  92      * @param message A message to log
  93      * @param exception A exception to log
  94      */
  95     public void logInfo(String message, Throwable exception) {
  96         getLog().log(new Status(IStatus.INFO, PLUGIN_ID, message, exception));
  97     }
  98
  99     /**
 100      * Logs a message and exception with severity WARNING in the runtime log of the plug-in.
 101      *
 102      * @param message A message to log
 103      */
 104     public void logWarning(String message) {
 105         getLog().log(new Status(IStatus.WARNING, PLUGIN_ID, message));
 106     }
 107
 108     /**
 109      * Logs a message and exception with severity WARNING in the runtime log of the plug-in.
 110      *
 111      * @param message A message to log
 112      * @param exception A exception to log
 113      */
 114     public void logWarning(String message, Throwable exception) {
 115         getLog().log(new Status(IStatus.WARNING, PLUGIN_ID, message, exception));
 116     }
 117
 118     /**
 119      * Logs a message and exception with severity ERROR in the runtime log of the plug-in.
 120      *
 121      * @param message A message to log
 122      */
 123     public void logError(String message) {
 124         getLog().log(new Status(IStatus.ERROR, PLUGIN_ID, message));
 125     }
 126
 127     /**
 128      * Logs a message and exception with severity ERROR in the runtime log of the plug-in.
 129      *
 130      * @param message A message to log
 131      * @param exception A exception to log
 132      */
 133     public void logError(String message, Throwable exception) {
 134         getLog().log(new Status(IStatus.ERROR, PLUGIN_ID, message, exception));
 135     }
 136
 137     /**
 138      * Return the OSGi service with the given service interface.
 139      *
 140      * @param service
 141      *            service interface
 142      * @return the specified service or null if it's not registered
 143      */
 144     public static @Nullable <T> T getService(Class<T> service) {
 145         BundleContext context = plugin.getBundle().getBundleContext();
 146         ServiceReference<T> ref = context.getServiceReference(service);
 147         return ((ref != null) ? context.getService(ref) : null);
 148     }
 149 }