1 /*
   2  * Copyright (c) 2004, 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.jvmstat.monitor.event;
  27 
  28 import java.util.List;
  29 import sun.jvmstat.monitor.MonitoredVm;
  30 import sun.jvmstat.monitor.Monitor;
  31 
  32 /**
  33  * Provides a description of a change in status of the instrumentation
  34  * exported by the MonitoredVm.
  35  *
  36  * @author Brian Doherty
  37  * @since 1.5
  38  */
  39 @SuppressWarnings("serial") // JDK implementation class
  40 public class MonitorStatusChangeEvent extends VmEvent {
  41 
  42     /**
  43      * List of instrumentation objects inserted since the last event.
  44      * Elements of this list will always be of type Monitor.
  45      */
  46     protected List<Monitor> inserted;
  47 
  48     /**
  49      * List of instrumentation objects removed since the last event.
  50      * Elements of this list will always be of type Monitor.
  51      */
  52     protected List<Monitor> removed;
  53 
  54     /**
  55      * Construct a new MonitorStatusChangeEvent.
  56      *
  57      * @param vm the MonitoredVm source of the event.
  58      * @param inserted the list of instrumentation objects inserted since
  59      *                 the last event.
  60      * @param removed the list of instrumentation objects removed since
  61      *                the last event.
  62      */
  63     public MonitorStatusChangeEvent(MonitoredVm vm, List<Monitor> inserted,
  64                                     List<Monitor> removed) {
  65         super(vm);
  66         this.inserted = inserted;
  67         this.removed = removed;
  68     }
  69 
  70     /**
  71      * Return the list of instrumentation objects that were inserted
  72      * since the last event notification.
  73      *
  74      * @return List - a List of Monitor objects that were inserted into the
  75      *                instrumentation exported by the MonitoredHost. If no
  76      *                new instrumentation was inserted, an emply List is
  77      *                returned.
  78      */
  79     public List<Monitor> getInserted() {
  80         return inserted;
  81     }
  82 
  83     /**
  84      * Return the set of instrumentation objects that were removed
  85      * since the last event notification.
  86      *
  87      * @return List - a List of Monitor objects that were removed from the
  88      *                instrumentation exported by the MonitoredHost. If no
  89      *                instrumentation was removed, an emply List is returned.
  90      */
  91     public List<Monitor> getRemoved() {
  92         return removed;
  93     }
  94 }