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