2 * Copyright (c) 2013 Pantheon Technologies s.r.o. 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
10 package org.opendaylight.openflowjava.protocol.impl.core.connection;
12 import com.google.common.base.Preconditions;
13 import io.netty.channel.Channel;
14 import java.net.InetSocketAddress;
15 import org.opendaylight.openflowjava.protocol.api.connection.ConnectionReadyListener;
16 import org.opendaylight.openflowjava.protocol.api.connection.OutboundQueueHandler;
17 import org.opendaylight.openflowjava.protocol.api.connection.OutboundQueueHandlerRegistration;
18 import org.opendaylight.openflowjava.protocol.api.extensibility.AlienMessageListener;
19 import org.opendaylight.openflowjava.protocol.impl.core.OFVersionDetector;
20 import org.opendaylight.openflowjava.protocol.impl.core.PipelineHandlers;
21 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.EchoOutput;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.EchoRequestMessage;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.ErrorMessage;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.ExperimenterMessage;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.FlowRemovedMessage;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.HelloMessage;
27 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.MultipartReplyMessage;
28 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.OfHeader;
29 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.OpenflowProtocolListener;
30 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PacketInMessage;
31 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PortStatusMessage;
32 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.system.rev130927.DisconnectEvent;
33 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.system.rev130927.SwitchIdleEvent;
34 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.system.rev130927.SystemNotificationsListener;
35 import org.opendaylight.yangtools.yang.binding.DataObject;
36 import org.opendaylight.yangtools.yang.binding.Notification;
37 import org.slf4j.Logger;
38 import org.slf4j.LoggerFactory;
41 * Handles messages (notifications + rpcs) and connections.
43 * @author michal.polkorab
45 public class ConnectionAdapterImpl extends AbstractConnectionAdapterStatistics implements ConnectionFacade {
47 private static final Logger LOG = LoggerFactory.getLogger(ConnectionAdapterImpl.class);
49 private ConnectionReadyListener connectionReadyListener;
50 private OpenflowProtocolListener messageListener;
51 private SystemNotificationsListener systemListener;
52 private AlienMessageListener alienMessageListener;
53 private AbstractOutboundQueueManager<?, ?> outputManager;
54 private OFVersionDetector versionDetector;
56 private final boolean useBarrier;
59 * Default constructor.
60 * @param channel the channel to be set - used for communication
61 * @param address client address (used only in case of UDP communication,
62 * as there is no need to store address over tcp (stable channel))
63 * @param useBarrier value is configurable by configSubsytem
65 public ConnectionAdapterImpl(final Channel channel, final InetSocketAddress address, final boolean useBarrier,
66 final int channelOutboundQueueSize) {
67 super(channel, address, channelOutboundQueueSize);
68 this.useBarrier = useBarrier;
69 LOG.debug("ConnectionAdapter created");
73 public void setMessageListener(final OpenflowProtocolListener messageListener) {
74 this.messageListener = messageListener;
78 public void setConnectionReadyListener(final ConnectionReadyListener connectionReadyListener) {
79 this.connectionReadyListener = connectionReadyListener;
83 public void setSystemListener(final SystemNotificationsListener systemListener) {
84 this.systemListener = systemListener;
88 public void setAlienMessageListener(final AlienMessageListener alienMessageListener) {
89 this.alienMessageListener = alienMessageListener;
93 public void consumeDeviceMessage(final DataObject message) {
94 LOG.debug("ConsumeIntern msg on {}", channel);
95 if (disconnectOccured) {
98 if (message instanceof Notification) {
101 if (message instanceof DisconnectEvent) {
102 systemListener.onDisconnectEvent((DisconnectEvent) message);
103 responseCache.invalidateAll();
104 disconnectOccured = true;
105 } else if (message instanceof SwitchIdleEvent) {
106 systemListener.onSwitchIdleEvent((SwitchIdleEvent) message);
108 } else if (message instanceof EchoRequestMessage) {
109 if (outputManager != null) {
110 outputManager.onEchoRequest((EchoRequestMessage) message);
112 messageListener.onEchoRequestMessage((EchoRequestMessage) message);
114 } else if (message instanceof ErrorMessage) {
115 // Send only unmatched errors
116 if (outputManager == null || !outputManager.onMessage((OfHeader) message)) {
117 messageListener.onErrorMessage((ErrorMessage) message);
119 } else if (message instanceof ExperimenterMessage) {
120 if (outputManager != null) {
121 outputManager.onMessage((OfHeader) message);
123 messageListener.onExperimenterMessage((ExperimenterMessage) message);
124 } else if (message instanceof FlowRemovedMessage) {
125 messageListener.onFlowRemovedMessage((FlowRemovedMessage) message);
126 } else if (message instanceof HelloMessage) {
127 LOG.info("Hello received");
128 messageListener.onHelloMessage((HelloMessage) message);
129 } else if (message instanceof MultipartReplyMessage) {
130 if (outputManager != null) {
131 outputManager.onMessage((OfHeader) message);
133 messageListener.onMultipartReplyMessage((MultipartReplyMessage) message);
134 } else if (message instanceof PacketInMessage) {
135 messageListener.onPacketInMessage((PacketInMessage) message);
136 } else if (message instanceof PortStatusMessage) {
137 messageListener.onPortStatusMessage((PortStatusMessage) message);
139 LOG.warn("message listening not supported for type: {}", message.getClass());
141 } else if (message instanceof OfHeader) {
142 LOG.debug("OF header msg received");
144 if (alienMessageListener != null && alienMessageListener.onAlienMessage((OfHeader) message)) {
145 LOG.debug("Alien message {} received", message.implementedInterface());
146 } else if (outputManager == null || !outputManager.onMessage((OfHeader) message)
147 || message instanceof EchoOutput) {
148 final RpcResponseKey key = createRpcResponseKey((OfHeader) message);
149 final ResponseExpectedRpcListener<?> listener = findRpcResponse(key);
150 if (listener != null) {
151 LOG.debug("Corresponding rpcFuture found");
152 listener.completed((OfHeader) message);
153 LOG.debug("After setting rpcFuture");
154 responseCache.invalidate(key);
158 LOG.warn("message listening not supported for type: {}", message.getClass());
162 private static RpcResponseKey createRpcResponseKey(final OfHeader message) {
163 return new RpcResponseKey(message.getXid(), message.implementedInterface().getName());
167 public void checkListeners() {
168 final StringBuilder buffer = new StringBuilder();
169 if (systemListener == null) {
170 buffer.append("SystemListener ");
172 if (messageListener == null) {
173 buffer.append("MessageListener ");
175 if (connectionReadyListener == null) {
176 buffer.append("ConnectionReadyListener ");
179 Preconditions.checkState(buffer.length() == 0, "Missing listeners: %s", buffer.toString());
183 public void fireConnectionReadyNotification() {
184 versionDetector = (OFVersionDetector) channel.pipeline().get(PipelineHandlers.OF_VERSION_DETECTOR.name());
185 Preconditions.checkState(versionDetector != null);
187 new Thread(() -> connectionReadyListener.onConnectionReady()).start();
191 public <T extends OutboundQueueHandler> OutboundQueueHandlerRegistration<T> registerOutboundQueueHandler(
192 final T handler, final int maxQueueDepth, final long maxBarrierNanos) {
193 Preconditions.checkState(outputManager == null, "Manager %s already registered", outputManager);
195 final AbstractOutboundQueueManager<T, ?> ret;
197 ret = new OutboundQueueManager<>(this, address, handler, maxQueueDepth, maxBarrierNanos);
199 LOG.warn("OutboundQueueManager without barrier is started.");
200 ret = new OutboundQueueManagerNoBarrier<>(this, address, handler);
204 /* we don't need it anymore */
205 channel.pipeline().remove(output);
206 // OutboundQueueManager is put before DelegatingInboundHandler because otherwise channelInactive event would
207 // be first processed in OutboundQueueManager and then in ConnectionAdapter (and Openflowplugin). This might
208 // cause problems because we are shutting down the queue before Openflowplugin knows about it.
209 channel.pipeline().addBefore(PipelineHandlers.DELEGATING_INBOUND_HANDLER.name(),
210 PipelineHandlers.CHANNEL_OUTBOUND_QUEUE_MANAGER.name(), outputManager);
212 return new OutboundQueueHandlerRegistrationImpl<T>(handler) {
214 protected void removeRegistration() {
215 outputManager.close();
216 channel.pipeline().remove(outputManager);
217 outputManager = null;
222 Channel getChannel() {
227 public void setPacketInFiltering(final boolean enabled) {
228 versionDetector.setFilterPacketIns(enabled);
229 LOG.debug("PacketIn filtering {}abled", enabled ? "en" : "dis");