/*

 * Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

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 */

package sun.nio.ch.sctp;

import java.net.SocketAddress;

import com.sun.nio.sctp.Association;

import com.sun.nio.sctp.PeerAddressChangeNotification;

import java.lang.annotation.Native;

/**

 * An implementation of PeerAddressChangeNotification

 */

public class PeerAddrChange extends PeerAddressChangeNotification

    implements SctpNotification

{

    /* static final ints so that they can be referenced from native */

    @Native private final static int SCTP_ADDR_AVAILABLE = 1;

    @Native private final static int SCTP_ADDR_UNREACHABLE = 2;

    @Native private final static int SCTP_ADDR_REMOVED = 3;

    @Native private final static int SCTP_ADDR_ADDED = 4;

    @Native private final static int SCTP_ADDR_MADE_PRIM = 5;

    @Native private final static int SCTP_ADDR_CONFIRMED =6;

    private Association association;

    /* assocId is used to lookup the association before the notification is

     * returned to user code */

    private int assocId;

    private SocketAddress address;

    private AddressChangeEvent event;

    /* Invoked from native */

    private PeerAddrChange(int assocId, SocketAddress address, int intEvent) {

        switch (intEvent) {

            case SCTP_ADDR_AVAILABLE :

                this.event = AddressChangeEvent.ADDR_AVAILABLE;

                break;

            case SCTP_ADDR_UNREACHABLE :

                this.event = AddressChangeEvent.ADDR_UNREACHABLE;

                break;

            case SCTP_ADDR_REMOVED :

                this.event = AddressChangeEvent.ADDR_REMOVED;

                break;

            case SCTP_ADDR_ADDED :

                this.event = AddressChangeEvent.ADDR_ADDED;

                break;

            case SCTP_ADDR_MADE_PRIM :

                this.event = AddressChangeEvent.ADDR_MADE_PRIMARY;

                break;

            case SCTP_ADDR_CONFIRMED :

                this.event = AddressChangeEvent.ADDR_CONFIRMED;

                break;

            default:

                throw new AssertionError("Unknown event type");

        }

        this.assocId = assocId;

        this.address = address;

    }

    @Override

    public int assocId() {

        return assocId;

    }

    @Override

    public void setAssociation(Association association) {

        this.association = association;

    }

    @Override

    public SocketAddress address() {

        assert address != null;

        return address;

    }

    @Override

    public Association association() {

        assert association != null;

        return association;

    }

    @Override

    public AddressChangeEvent event() {

        assert event != null;

        return event;

    }

    @Override

    public String toString() {

        StringBuilder sb = new StringBuilder();

        sb.append(super.toString()).append(" [");

        sb.append("Address: ").append(address);

        sb.append(", Association:").append(association);

        sb.append(", Event: ").append(event).append("]");

        return sb.toString();

    }

}