1 /*
   2  * Copyright (c) 2009, 2013, 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 package sun.nio.ch.sctp;
  26 
  27 import com.sun.nio.sctp.Association;
  28 import com.sun.nio.sctp.AssociationChangeNotification;
  29 import java.lang.annotation.Native;
  30 
  31 /**
  32  * An implementation of AssociationChangeNotification
  33  */
  34 public class AssociationChange extends AssociationChangeNotification
  35     implements SctpNotification
  36 {
  37     /* static final ints so that they can be referenced from native */
  38     @Native private final static int SCTP_COMM_UP = 1;
  39     @Native private final static int SCTP_COMM_LOST = 2;
  40     @Native private final static int SCTP_RESTART = 3;
  41     @Native private final static int SCTP_SHUTDOWN = 4;
  42     @Native private final static int SCTP_CANT_START = 5;
  43 
  44     private Association association;
  45 
  46     /* assocId is used to lookup the association before the notification is
  47      * returned to user code */
  48     private int assocId;
  49     private AssocChangeEvent event;
  50     private int maxOutStreams;
  51     private int maxInStreams;
  52 
  53     /* Invoked from native */
  54     private AssociationChange(int assocId,
  55                               int intEvent,
  56                               int maxOutStreams,
  57                               int maxInStreams) {
  58         switch (intEvent) {
  59             case SCTP_COMM_UP :
  60                 this.event = AssocChangeEvent.COMM_UP;
  61                 break;
  62             case SCTP_COMM_LOST :
  63                 this.event = AssocChangeEvent.COMM_LOST;
  64                 break;
  65             case SCTP_RESTART :
  66                 this.event = AssocChangeEvent.RESTART;
  67                 break;
  68             case SCTP_SHUTDOWN :
  69                 this.event = AssocChangeEvent.SHUTDOWN;
  70                 break;
  71             case SCTP_CANT_START :
  72                 this.event = AssocChangeEvent.CANT_START;
  73                 break;
  74             default :
  75                 throw new AssertionError(
  76                       "Unknown Association Change Event type: " + intEvent);
  77         }
  78 
  79         this.assocId = assocId;
  80         this.maxOutStreams = maxOutStreams;
  81         this.maxInStreams = maxInStreams;
  82     }
  83 
  84     @Override
  85     public int assocId() {
  86         return assocId;
  87     }
  88 
  89     @Override
  90     public void setAssociation(Association association) {
  91         this.association = association;
  92     }
  93 
  94     @Override
  95     public Association association() {
  96         assert association != null;
  97         return association;
  98     }
  99 
 100     @Override
 101     public AssocChangeEvent event() {
 102         return event;
 103     }
 104 
 105     int maxOutStreams() {
 106         return maxOutStreams;
 107     }
 108 
 109     int maxInStreams() {
 110         return maxInStreams;
 111     }
 112 
 113     @Override
 114     public String toString() {
 115         StringBuilder sb = new StringBuilder();
 116         sb.append(super.toString()).append(" [");
 117         sb.append("Association:").append(association);
 118         sb.append(", Event: ").append(event).append("]");
 119         return sb.toString();
 120     }
 121 }