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
9 package org.opendaylight.openflowplugin.openflow.md.core.session;
11 import java.util.Arrays;
12 import java.util.Collection;
13 import java.util.List;
15 import java.util.Map.Entry;
16 import java.util.concurrent.ConcurrentHashMap;
18 import org.opendaylight.controller.sal.binding.api.NotificationProviderService;
19 import org.opendaylight.controller.sal.binding.api.data.DataProviderService;
20 import org.opendaylight.openflowplugin.openflow.md.core.ConnectionConductor;
21 import org.opendaylight.openflowplugin.openflow.md.core.IMDMessageTranslator;
22 import org.opendaylight.openflowplugin.openflow.md.core.SwitchConnectionDistinguisher;
23 import org.opendaylight.openflowplugin.openflow.md.core.TranslatorKey;
24 import org.opendaylight.openflowplugin.openflow.md.queue.MessageSpy;
25 import org.opendaylight.openflowplugin.openflow.md.queue.PopListener;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.OfHeader;
27 import org.opendaylight.yangtools.concepts.ListenerRegistration;
28 import org.opendaylight.yangtools.concepts.util.ListenerRegistry;
29 import org.opendaylight.yangtools.yang.binding.DataContainer;
30 import org.opendaylight.yangtools.yang.binding.DataObject;
31 import org.slf4j.Logger;
32 import org.slf4j.LoggerFactory;
34 import com.google.common.util.concurrent.ListeningExecutorService;
39 public class SessionManagerOFImpl implements SessionManager {
41 protected static final Logger LOG = LoggerFactory.getLogger(SessionManagerOFImpl.class);
42 private static SessionManagerOFImpl instance;
43 private ConcurrentHashMap<SwitchSessionKeyOF, SessionContext> sessionLot;
44 private Map<TranslatorKey, Collection<IMDMessageTranslator<OfHeader, List<DataObject>>>> translatorMapping;
45 private Map<Class<? extends DataObject>, Collection<PopListener<DataObject>>> popListenerMapping;
47 protected ListenerRegistry<SessionListener> sessionListeners;
48 private NotificationProviderService notificationProviderService;
50 private DataProviderService dataProviderService;
51 private ListeningExecutorService rpcPool;
55 * @return singleton instance
57 public static SessionManager getInstance() {
58 if (instance == null) {
59 synchronized (SessionContextOFImpl.class) {
60 if (instance == null) {
61 instance = new SessionManagerOFImpl();
69 * close and release singleton instace
71 public static void releaseInstance() {
72 if (instance != null) {
73 synchronized (SessionManagerOFImpl.class) {
74 if (instance != null) {
82 private SessionManagerOFImpl() {
83 LOG.debug("singleton creating");
84 sessionLot = new ConcurrentHashMap<>();
85 sessionListeners = new ListenerRegistry<>();
89 public SessionContext getSessionContext(SwitchSessionKeyOF sessionKey) {
90 return sessionLot.get(sessionKey);
94 public void invalidateSessionContext(SwitchSessionKeyOF sessionKey) {
95 SessionContext context = getSessionContext(sessionKey);
96 if (context == null) {
97 LOG.warn("context for invalidation not found");
99 for (Entry<SwitchConnectionDistinguisher, ConnectionConductor> auxEntry : context.getAuxiliaryConductors()) {
100 invalidateAuxiliary(sessionKey, auxEntry.getKey());
102 context.getPrimaryConductor().disconnect();
103 context.setValid(false);
104 removeSessionContext(context);
105 // TODO:: notify listeners
109 private void invalidateDeadSessionContext(SessionContext sessionContext) {
110 if (sessionContext == null) {
111 LOG.warn("context for invalidation not found");
113 for (Entry<SwitchConnectionDistinguisher, ConnectionConductor> auxEntry : sessionContext
114 .getAuxiliaryConductors()) {
115 invalidateAuxiliary(sessionContext, auxEntry.getKey(), true);
117 sessionContext.setValid(false);
118 removeSessionContext(sessionContext);
119 // TODO:: notify listeners
123 private void removeSessionContext(SessionContext sessionContext) {
124 if (LOG.isDebugEnabled()) {
125 LOG.debug("removing session: {}", Arrays.toString(sessionContext.getSessionKey().getId()));
127 sessionLot.remove(sessionContext.getSessionKey(), sessionContext);
128 sessionNotifier.onSessionRemoved(sessionContext);
132 public void addSessionContext(SwitchSessionKeyOF sessionKey, SessionContext context) {
133 sessionLot.put(sessionKey, context);
135 sessionNotifier.onSessionAdded(sessionKey, context);
140 public void invalidateAuxiliary(SwitchSessionKeyOF sessionKey,
141 SwitchConnectionDistinguisher connectionCookie) {
142 SessionContext context = getSessionContext(sessionKey);
143 invalidateAuxiliary(context, connectionCookie, true);
148 * @param connectionCookie
150 * true if auxiliary connection is to be disconnected
152 private static void invalidateAuxiliary(SessionContext context, SwitchConnectionDistinguisher connectionCookie,
153 boolean disconnect) {
154 if (context == null) {
155 LOG.warn("context for invalidation not found");
157 ConnectionConductor auxiliaryConductor = context.removeAuxiliaryConductor(connectionCookie);
158 if (auxiliaryConductor == null) {
159 LOG.warn("auxiliary conductor not found");
162 auxiliaryConductor.disconnect();
169 public void invalidateOnDisconnect(ConnectionConductor conductor) {
170 if (conductor.getAuxiliaryKey() == null) {
171 invalidateDeadSessionContext(conductor.getSessionContext());
172 // TODO:: notify listeners
174 invalidateAuxiliary(conductor.getSessionContext(), conductor.getAuxiliaryKey(), false);
179 public void setTranslatorMapping(Map<TranslatorKey, Collection<IMDMessageTranslator<OfHeader, List<DataObject>>>> translatorMapping) {
180 this.translatorMapping = translatorMapping;
184 public ListenerRegistration<SessionListener> registerSessionListener(SessionListener listener) {
185 LOG.debug("registerSessionListener");
186 return sessionListeners.register(listener);
189 private final SessionListener sessionNotifier = new SessionListener() {
192 public void onSessionAdded(SwitchSessionKeyOF sessionKey, SessionContext context) {
193 for (ListenerRegistration<SessionListener> listener : sessionListeners) {
195 listener.getInstance().onSessionAdded(sessionKey, context);
196 } catch (Exception e) {
197 LOG.error("Unhandled exeption occured while invoking onSessionAdded on listener", e);
203 public void onSessionRemoved(SessionContext context) {
204 for (ListenerRegistration<SessionListener> listener : sessionListeners) {
206 listener.getInstance().onSessionRemoved(context);
207 } catch (Exception e) {
208 LOG.error("Unhandled exeption occured while invoking onSessionRemoved on listener", e);
213 private MessageSpy<DataContainer> messageSpy;
217 public Map<TranslatorKey, Collection<IMDMessageTranslator<OfHeader, List<DataObject>>>> getTranslatorMapping() {
218 return this.translatorMapping;
222 public void setNotificationProviderService(
223 NotificationProviderService notificationProviderService) {
224 this.notificationProviderService = notificationProviderService;
229 public DataProviderService getDataProviderService() {
230 return dataProviderService;
234 public void setDataProviderService(DataProviderService dataServiceProvider) {
235 this.dataProviderService = dataServiceProvider;
240 public NotificationProviderService getNotificationProviderService() {
241 return notificationProviderService;
245 public Map<Class<? extends DataObject>, Collection<PopListener<DataObject>>> getPopListenerMapping() {
246 return popListenerMapping;
250 public void setPopListenerMapping(
251 Map<Class<? extends DataObject>, Collection<PopListener<DataObject>>> popListenerMapping) {
252 this.popListenerMapping = popListenerMapping;
256 public void close() {
258 sessionListeners = null;
259 synchronized (sessionLot) {
260 for (SessionContext sessionContext : sessionLot.values()) {
261 sessionContext.getPrimaryConductor().disconnect();
263 // TODO: handle timeouted shutdown
269 public void setRpcPool(ListeningExecutorService rpcPool) {
270 this.rpcPool = rpcPool;
274 public ListeningExecutorService getRpcPool() {
279 public void setMessageSpy(MessageSpy<DataContainer> messageSpy) {
280 this.messageSpy = messageSpy;
284 public MessageSpy<DataContainer> getMessageSpy() {