2 * Copyright (c) 2013 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.bgp.rib.mock;
10 import com.google.common.eventbus.EventBus;
11 import com.google.common.eventbus.Subscribe;
12 import io.netty.channel.ChannelHandlerContext;
13 import io.netty.util.concurrent.ScheduledFuture;
14 import java.util.ArrayList;
15 import java.util.Collections;
16 import java.util.HashSet;
17 import java.util.List;
19 import java.util.concurrent.TimeUnit;
20 import org.opendaylight.protocol.bgp.parser.BGPDocumentedException;
21 import org.opendaylight.protocol.bgp.parser.BGPError;
22 import org.opendaylight.protocol.bgp.parser.BgpTableTypeImpl;
23 import org.opendaylight.protocol.bgp.parser.spi.PeerConstraint;
24 import org.opendaylight.protocol.bgp.rib.spi.BGPSession;
25 import org.opendaylight.protocol.bgp.rib.spi.BGPSessionListener;
26 import org.opendaylight.protocol.bgp.rib.spi.BGPTerminationReason;
27 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.AsNumber;
28 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Address;
29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.Keepalive;
30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.Open;
31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.open.message.BgpParameters;
32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.open.message.bgp.parameters.OptionalCapabilities;
33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.open.message.bgp.parameters.optional.capabilities.CParameters;
34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.BgpTableType;
35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.CParameters1;
36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.mp.capabilities.AddPathCapability;
37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.mp.capabilities.MultiprotocolCapability;
38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.mp.capabilities.add.path.capability.AddressFamilies;
39 import org.opendaylight.yangtools.concepts.AbstractListenerRegistration;
40 import org.opendaylight.yangtools.yang.binding.Notification;
41 import org.opendaylight.yangtools.yang.common.Uint32;
42 import org.slf4j.Logger;
43 import org.slf4j.LoggerFactory;
46 * This class has @Subscribe annotated methods which receive events from {@link EventBus} . Events are produced by
47 * {@link BGPMock}, and each instance notifies exactly one {@link BGPSessionListener}.
49 final class EventBusRegistration extends AbstractListenerRegistration<BGPSessionListener> {
51 private static final Logger LOG = LoggerFactory.getLogger(EventBusRegistration.class);
53 private final EventBus eventBus;
55 public static EventBusRegistration createAndRegister(final EventBus eventBus, final BGPSessionListener listener,
56 final List<Notification<?>> allPreviousMessages) {
57 final EventBusRegistration instance = new EventBusRegistration(eventBus, listener, allPreviousMessages);
58 eventBus.register(instance);
62 private EventBusRegistration(final EventBus eventBus, final BGPSessionListener listener,
63 final List<Notification<?>> allPreviousMessages) {
65 this.eventBus = eventBus;
66 for (final Notification<?> message : allPreviousMessages) {
67 sendMessage(listener, message);
72 public void onMessage(final Notification<?> message) {
73 sendMessage(this.getInstance(), message);
77 public synchronized void removeRegistration() {
78 eventBus.unregister(this);
81 private static void sendMessage(final BGPSessionListener listener, final Notification<?> message) {
82 if (BGPMock.CONNECTION_LOST_MAGIC_MSG.equals(message)) {
83 listener.onSessionTerminated(null, new BGPTerminationReason(BGPError.CEASE));
84 } else if (message instanceof Open) {
85 final Set<BgpTableType> tts = new HashSet<>();
86 final List<AddressFamilies> addPathCapabilitiesList = new ArrayList<>();
87 for (final BgpParameters param : ((Open) message).getBgpParameters()) {
88 for (final OptionalCapabilities capa : param.getOptionalCapabilities()) {
89 final CParameters cParam = capa.getCParameters();
90 final CParameters1 aug = cParam.augmentation(CParameters1.class);
94 if (aug.getMultiprotocolCapability() != null) {
95 final MultiprotocolCapability p = aug.getMultiprotocolCapability();
96 LOG.debug("Adding open parameter {}", p);
97 final BgpTableType type = new BgpTableTypeImpl(p.getAfi(), p.getSafi());
99 } else if (aug.getAddPathCapability() != null) {
100 final AddPathCapability addPathCap = aug.getAddPathCapability();
101 addPathCapabilitiesList.addAll(addPathCap.getAddressFamilies());
105 listener.onSessionUp(new MockBGPSession(tts, addPathCapabilitiesList));
106 } else if (!(message instanceof Keepalive)) {
108 listener.onMessage(new MockBGPSession(), message);
109 } catch (BGPDocumentedException e) {
110 LOG.warn("Exception encountered while handling message", e);
115 private static class MockBGPSession implements BGPSession {
116 private static final Uint32 AS = Uint32.valueOf(30).intern();
118 private final List<AddressFamilies> addPathAfis;
119 private final Set<BgpTableType> tts;
121 MockBGPSession(final Set<BgpTableType> tts, final List<AddressFamilies> addPathAfis) {
123 this.addPathAfis = addPathAfis;
127 this(Collections.emptySet(), Collections.emptyList());
131 public void channelRegistered(final ChannelHandlerContext channelHandlerContext) throws Exception {
135 public void channelUnregistered(final ChannelHandlerContext channelHandlerContext) throws Exception {
139 public void channelActive(final ChannelHandlerContext channelHandlerContext) throws Exception {
143 public void channelInactive(final ChannelHandlerContext channelHandlerContext) throws Exception {
147 public void channelRead(final ChannelHandlerContext channelHandlerContext, final Object obj)
152 public void channelReadComplete(final ChannelHandlerContext channelHandlerContext) throws Exception {
156 public void userEventTriggered(final ChannelHandlerContext channelHandlerContext, final Object obj)
161 public void channelWritabilityChanged(final ChannelHandlerContext channelHandlerContext) throws Exception {
165 public void handlerAdded(final ChannelHandlerContext channelHandlerContext) throws Exception {
169 public void handlerRemoved(final ChannelHandlerContext channelHandlerContext) throws Exception {
173 public void exceptionCaught(final ChannelHandlerContext channelHandlerContext, final Throwable throwable)
178 public void close() {
179 LOG.debug("Session {} closed", this);
183 public Set<BgpTableType> getAdvertisedTableTypes() {
188 public Ipv4Address getBgpId() {
189 return new Ipv4Address("127.0.0.1");
193 public AsNumber getAsNumber() {
194 return new AsNumber(AS);
198 public List<AddressFamilies> getAdvertisedAddPathTableTypes() {
203 public void closeWithoutMessage() {
208 public <T extends PeerConstraint> void addDecoderConstraint(final Class<T> constraintClass,
209 final T constraint) {
214 public ScheduledFuture<?> schedule(final Runnable command, final long delay, final TimeUnit unit) {