2 * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.protocol.bmp.parser.message;
10 import static java.util.Objects.requireNonNull;
11 import static org.opendaylight.protocol.bmp.parser.message.PeerDownHandler.Reason.REASON_FOUR;
12 import static org.opendaylight.protocol.bmp.parser.message.PeerDownHandler.Reason.REASON_ONE;
13 import static org.opendaylight.protocol.bmp.parser.message.PeerDownHandler.Reason.REASON_THREE;
14 import static org.opendaylight.protocol.bmp.parser.message.PeerDownHandler.Reason.REASON_TWO;
16 import com.google.common.base.Preconditions;
17 import com.google.common.collect.ImmutableMap;
18 import io.netty.buffer.ByteBuf;
20 import org.opendaylight.protocol.bgp.parser.BGPDocumentedException;
21 import org.opendaylight.protocol.bgp.parser.BGPParsingException;
22 import org.opendaylight.protocol.bgp.parser.spi.MessageRegistry;
23 import org.opendaylight.protocol.bmp.spi.parser.AbstractBmpPerPeerMessageParser;
24 import org.opendaylight.protocol.bmp.spi.parser.BmpDeserializationException;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.NotifyBuilder;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.NotifyMessage;
27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bmp.message.rev200120.PeerDownNotification;
28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bmp.message.rev200120.PeerDownNotificationBuilder;
29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bmp.message.rev200120.peer.down.Data;
30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bmp.message.rev200120.peer.down.data.FsmEventCode;
31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bmp.message.rev200120.peer.down.data.FsmEventCodeBuilder;
32 import org.opendaylight.yangtools.yang.binding.Notification;
33 import org.opendaylight.yangtools.yang.common.netty.ByteBufUtils;
35 public class PeerDownHandler extends AbstractBmpPerPeerMessageParser<PeerDownNotificationBuilder> {
36 private static final int MESSAGE_TYPE = 2;
37 private final MessageRegistry msgRegistry;
39 public PeerDownHandler(final MessageRegistry bgpMssageRegistry) {
40 super(bgpMssageRegistry);
41 this.msgRegistry = getBgpMessageRegistry();
45 public void serializeMessageBody(final Notification message, final ByteBuf buffer) {
46 super.serializeMessageBody(message, buffer);
47 Preconditions.checkArgument(message instanceof PeerDownNotification,
48 "An instance of PeerDownNotification is required");
49 final PeerDownNotification peerDown = (PeerDownNotification) message;
50 if (peerDown.isLocalSystemClosed()) {
51 if (peerDown.getData() instanceof FsmEventCode) {
52 buffer.writeByte(REASON_TWO.getValue());
53 ByteBufUtils.writeOrZero(buffer, ((FsmEventCode) peerDown.getData()).getFsmEventCode());
54 } else if (peerDown.getData()
55 instanceof org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bmp.message.rev200120
56 .peer.down.data.Notification) {
57 buffer.writeByte(REASON_ONE.getValue());
58 serializePDU(peerDown.getData(), buffer);
61 if (peerDown.getData()
62 instanceof org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bmp.message.rev200120
63 .peer.down.data.Notification) {
64 buffer.writeByte(REASON_THREE.getValue());
65 serializePDU(peerDown.getData(), buffer);
67 buffer.writeByte(REASON_FOUR.getValue());
72 private void serializePDU(final Data data, final ByteBuf buffer) {
73 final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bmp.message.rev200120.peer.down.data
74 .Notification notification =
75 (org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bmp.message.rev200120.peer.down.data
77 this.msgRegistry.serializeMessage(new NotifyBuilder(notification.getNotification()).build(), buffer);
81 public Notification parseMessageBody(final ByteBuf bytes) throws BmpDeserializationException {
82 final PeerDownNotificationBuilder peerDown = new PeerDownNotificationBuilder()
83 .setPeerHeader(parsePerPeerHeader(bytes));
84 final Reason reason = Reason.forValue(bytes.readUnsignedByte());
88 peerDown.setLocalSystemClosed(Boolean.TRUE);
89 peerDown.setData(parseBgpNotificationMessage(bytes));
92 peerDown.setLocalSystemClosed(Boolean.TRUE);
93 peerDown.setData(new FsmEventCodeBuilder().setFsmEventCode(ByteBufUtils.readUint16(bytes)).build());
97 peerDown.setLocalSystemClosed(Boolean.FALSE);
98 peerDown.setData(parseBgpNotificationMessage(bytes));
101 peerDown.setLocalSystemClosed(Boolean.FALSE);
108 return peerDown.build();
111 private org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bmp.message.rev200120.peer.down.data
112 .Notification parseBgpNotificationMessage(final ByteBuf bytes) throws BmpDeserializationException {
113 final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bmp.message.rev200120.peer.down.data
114 .NotificationBuilder notificationCBuilder = new org.opendaylight.yang.gen.v1.urn.opendaylight.params
115 .xml.ns.yang.bmp.message.rev200120.peer.down.data.NotificationBuilder();
117 final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bmp.message.rev200120.peer.down.data
118 .notification.NotificationBuilder notificationBuilder = new org.opendaylight.yang.gen.v1.urn
119 .opendaylight.params.xml.ns.yang.bmp.message.rev200120.peer.down.data.notification
120 .NotificationBuilder();
122 final Notification not = this.msgRegistry.parseMessage(bytes, null);
123 requireNonNull(not, "Notify message may not be null.");
124 Preconditions.checkArgument(not instanceof NotifyMessage,
125 "An instance of NotifyMessage is required");
126 notificationBuilder.fieldsFrom((NotifyMessage) not);
127 notificationCBuilder.setNotification(notificationBuilder.build());
128 } catch (final BGPDocumentedException | BGPParsingException e) {
129 throw new BmpDeserializationException("Error while parsing BGP Notification message.", e);
132 return notificationCBuilder.build();
136 public int getBmpMessageType() {
141 REASON_ONE((short) 1),
142 REASON_TWO((short) 2),
143 REASON_THREE((short) 3),
144 REASON_FOUR((short) 4),
145 REASON_FIVE((short) 5);
147 private static final Map<Short, Reason> VALUE_MAP;
150 final ImmutableMap.Builder<Short, Reason> b = ImmutableMap.builder();
151 for (final Reason enumItem : Reason.values()) {
152 b.put(enumItem.getValue(), enumItem);
154 VALUE_MAP = b.build();
157 private final short value;
159 Reason(final short value) {
163 public static Reason forValue(final short value) {
164 return VALUE_MAP.get(value);
167 public short getValue() {