2 * Copyright (c) 2016 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
8 package org.opendaylight.openflowplugin.impl.lifecycle;
10 import com.google.common.annotations.VisibleForTesting;
11 import com.google.common.util.concurrent.FutureCallback;
12 import com.google.common.util.concurrent.Futures;
13 import com.google.common.util.concurrent.ListenableFuture;
14 import com.google.common.util.concurrent.MoreExecutors;
15 import com.google.common.util.concurrent.ThreadFactoryBuilder;
16 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
17 import java.util.HashMap;
18 import java.util.List;
20 import java.util.Objects;
21 import java.util.Optional;
22 import java.util.concurrent.ConcurrentHashMap;
23 import java.util.concurrent.ConcurrentMap;
24 import java.util.concurrent.ExecutionException;
25 import java.util.concurrent.Executor;
26 import java.util.concurrent.Executors;
27 import java.util.concurrent.ScheduledExecutorService;
28 import java.util.concurrent.ThreadFactory;
29 import java.util.concurrent.TimeUnit;
30 import java.util.concurrent.TimeoutException;
31 import java.util.stream.Collectors;
32 import org.eclipse.jdt.annotation.NonNull;
33 import org.eclipse.jdt.annotation.Nullable;
34 import org.opendaylight.mdsal.eos.binding.api.EntityOwnershipChange;
35 import org.opendaylight.mdsal.eos.binding.api.EntityOwnershipListenerRegistration;
36 import org.opendaylight.mdsal.eos.binding.api.EntityOwnershipService;
37 import org.opendaylight.mdsal.eos.common.api.EntityOwnershipState;
38 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceProvider;
39 import org.opendaylight.openflowplugin.api.openflow.OFPManager;
40 import org.opendaylight.openflowplugin.api.openflow.connection.ConnectionContext;
41 import org.opendaylight.openflowplugin.api.openflow.connection.ConnectionStatus;
42 import org.opendaylight.openflowplugin.api.openflow.device.DeviceContext;
43 import org.opendaylight.openflowplugin.api.openflow.device.DeviceInfo;
44 import org.opendaylight.openflowplugin.api.openflow.device.DeviceManager;
45 import org.opendaylight.openflowplugin.api.openflow.lifecycle.ContextChain;
46 import org.opendaylight.openflowplugin.api.openflow.lifecycle.ContextChainHolder;
47 import org.opendaylight.openflowplugin.api.openflow.lifecycle.ContextChainMastershipState;
48 import org.opendaylight.openflowplugin.api.openflow.lifecycle.MasterChecker;
49 import org.opendaylight.openflowplugin.api.openflow.lifecycle.OwnershipChangeListener;
50 import org.opendaylight.openflowplugin.api.openflow.role.RoleContext;
51 import org.opendaylight.openflowplugin.api.openflow.role.RoleManager;
52 import org.opendaylight.openflowplugin.api.openflow.rpc.RpcContext;
53 import org.opendaylight.openflowplugin.api.openflow.rpc.RpcManager;
54 import org.opendaylight.openflowplugin.api.openflow.statistics.StatisticsContext;
55 import org.opendaylight.openflowplugin.api.openflow.statistics.StatisticsManager;
56 import org.opendaylight.openflowplugin.impl.util.DeviceStateUtil;
57 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
58 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
59 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;
60 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.FeaturesReply;
61 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.mdsal.core.general.entity.rev150930.Entity;
62 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.openflow.provider.config.rev160510.OpenflowProviderConfig;
63 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.openflowplugin.rf.state.rev170713.ResultState;
64 import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
65 import org.opendaylight.yangtools.yang.common.Uint8;
66 import org.slf4j.Logger;
67 import org.slf4j.LoggerFactory;
69 public class ContextChainHolderImpl implements ContextChainHolder, MasterChecker {
70 private static final Logger LOG = LoggerFactory.getLogger(ContextChainHolderImpl.class);
71 private static final Logger OF_EVENT_LOG = LoggerFactory.getLogger("OfEventLog");
73 private static final String CONTEXT_CREATED_FOR_CONNECTION = " context created for connection: {}";
74 private static final long REMOVE_DEVICE_FROM_DS_TIMEOUT = 5000L;
75 private static final String ASYNC_SERVICE_ENTITY_TYPE = "org.opendaylight.mdsal.AsyncServiceCloseEntityType";
76 private static final String SERVICE_ENTITY_TYPE = "org.opendaylight.mdsal.ServiceEntityType";
77 private static final String SEPARATOR = ":";
78 private final ConcurrentMap<DeviceInfo, ContextChain> contextChainMap = new ConcurrentHashMap<>();
79 private final ConcurrentMap<DeviceInfo, ? super ConnectionContext> connectingDevices = new ConcurrentHashMap<>();
80 private final EntityOwnershipListenerRegistration eosListenerRegistration;
81 private final ClusterSingletonServiceProvider singletonServiceProvider;
82 private final Executor executor;
83 private final OwnershipChangeListener ownershipChangeListener;
84 private final ThreadFactory threadFactory = new ThreadFactoryBuilder().setDaemon(true)
85 .setNameFormat("node-cleaner-%d").setUncaughtExceptionHandler((thread, throwable) -> {
86 LOG.warn("Uncaught exception while removing node data from operational datastore.", throwable);
88 private final ScheduledExecutorService nodeCleanerExecutor = Executors.newScheduledThreadPool(
89 Runtime.getRuntime().availableProcessors() , threadFactory);
90 private final EntityOwnershipService entityOwnershipService;
91 private final OpenflowProviderConfig config;
92 private DeviceManager deviceManager;
93 private RpcManager rpcManager;
94 private StatisticsManager statisticsManager;
95 private RoleManager roleManager;
97 public ContextChainHolderImpl(final Executor executor,
98 final ClusterSingletonServiceProvider singletonServiceProvider,
99 final EntityOwnershipService entityOwnershipService,
100 final OwnershipChangeListener ownershipChangeListener,
101 final OpenflowProviderConfig config) {
102 this.singletonServiceProvider = singletonServiceProvider;
103 this.executor = executor;
104 this.ownershipChangeListener = ownershipChangeListener;
105 this.ownershipChangeListener.setMasterChecker(this);
106 this.entityOwnershipService = entityOwnershipService;
107 this.config = config;
108 this.eosListenerRegistration = Objects
109 .requireNonNull(entityOwnershipService.registerListener(ASYNC_SERVICE_ENTITY_TYPE, this));
113 public <T extends OFPManager> void addManager(final T manager) {
114 if (deviceManager == null && manager instanceof DeviceManager) {
115 LOG.trace("Context chain holder: Device manager OK.");
116 deviceManager = (DeviceManager) manager;
117 } else if (rpcManager == null && manager instanceof RpcManager) {
118 LOG.trace("Context chain holder: RPC manager OK.");
119 rpcManager = (RpcManager) manager;
120 } else if (statisticsManager == null && manager instanceof StatisticsManager) {
121 LOG.trace("Context chain holder: Statistics manager OK.");
122 statisticsManager = (StatisticsManager) manager;
123 } else if (roleManager == null && manager instanceof RoleManager) {
124 LOG.trace("Context chain holder: Role manager OK.");
125 roleManager = (RoleManager) manager;
130 void createContextChain(final ConnectionContext connectionContext) {
131 final DeviceInfo deviceInfo = connectionContext.getDeviceInfo();
132 final DeviceContext deviceContext = deviceManager.createContext(connectionContext);
133 deviceContext.registerMastershipWatcher(this);
134 LOG.debug("Device" + CONTEXT_CREATED_FOR_CONNECTION, deviceInfo);
136 final RpcContext rpcContext = rpcManager.createContext(deviceContext);
137 rpcContext.registerMastershipWatcher(this);
138 LOG.debug("RPC" + CONTEXT_CREATED_FOR_CONNECTION, deviceInfo);
140 final StatisticsContext statisticsContext = statisticsManager
141 .createContext(deviceContext, ownershipChangeListener.isReconciliationFrameworkRegistered());
142 statisticsContext.registerMastershipWatcher(this);
143 LOG.debug("Statistics" + CONTEXT_CREATED_FOR_CONNECTION, deviceInfo);
145 final RoleContext roleContext = roleManager.createContext(deviceContext);
146 roleContext.registerMastershipWatcher(this);
147 LOG.debug("Role" + CONTEXT_CREATED_FOR_CONNECTION, deviceInfo);
149 final ContextChain contextChain = new ContextChainImpl(this, connectionContext, executor);
150 contextChain.registerDeviceRemovedHandler(deviceManager);
151 contextChain.registerDeviceRemovedHandler(rpcManager);
152 contextChain.registerDeviceRemovedHandler(statisticsManager);
153 contextChain.registerDeviceRemovedHandler(roleManager);
154 contextChain.registerDeviceRemovedHandler(this);
155 contextChain.addContext(deviceContext);
156 contextChain.addContext(rpcContext);
157 contextChain.addContext(statisticsContext);
158 contextChain.addContext(roleContext);
159 contextChainMap.put(deviceInfo, contextChain);
160 connectingDevices.remove(deviceInfo);
161 LOG.debug("Context chain" + CONTEXT_CREATED_FOR_CONNECTION, deviceInfo);
163 deviceContext.onPublished();
164 contextChain.registerServices(singletonServiceProvider);
168 public ConnectionStatus deviceConnected(final ConnectionContext connectionContext) {
169 final DeviceInfo deviceInfo = connectionContext.getDeviceInfo();
170 final ContextChain contextChain = contextChainMap.get(deviceInfo);
171 final FeaturesReply featuresReply = connectionContext.getFeatures();
172 final Uint8 auxiliaryId = featuresReply != null ? featuresReply.getAuxiliaryId() : null;
174 if (auxiliaryId != null && auxiliaryId.toJava() != 0) {
175 if (contextChain == null) {
176 LOG.warn("An auxiliary connection for device {}, but no primary connection. Refusing connection.",
178 return ConnectionStatus.REFUSING_AUXILIARY_CONNECTION;
180 if (contextChain.addAuxiliaryConnection(connectionContext)) {
181 LOG.info("An auxiliary connection was added to device: {}", deviceInfo);
182 return ConnectionStatus.MAY_CONTINUE;
184 LOG.warn("Not able to add auxiliary connection to the device {}", deviceInfo);
185 return ConnectionStatus.REFUSING_AUXILIARY_CONNECTION;
189 LOG.info("Device {} connected.", deviceInfo);
190 final boolean contextExists = contextChain != null;
191 final boolean isClosing = contextExists && contextChain.isClosing();
193 if (!isClosing && connectingDevices.putIfAbsent(deviceInfo, connectionContext) != null) {
194 LOG.warn("Device {} is already trying to connect, wait until succeeded or disconnected.", deviceInfo);
195 return ConnectionStatus.ALREADY_CONNECTED;
200 LOG.warn("Device {} is already in termination state, closing all incoming connections.",
202 return ConnectionStatus.CLOSING;
205 LOG.warn("Device {} already connected. Closing previous connection", deviceInfo);
206 destroyContextChain(deviceInfo);
207 LOG.info("Old connection dropped, creating new context chain for device {}", deviceInfo);
208 createContextChain(connectionContext);
210 LOG.info("No context chain found for device: {}, creating new.", deviceInfo);
211 createContextChain(connectionContext);
214 return ConnectionStatus.MAY_CONTINUE;
220 public void onNotAbleToStartMastership(final DeviceInfo deviceInfo, final String reason, final boolean mandatory) {
221 LOG.error("Not able to set MASTER role on device {}, reason: {}", deviceInfo, reason);
226 if (contextChainMap.containsKey(deviceInfo)) {
227 LOG.warn("This mastering is mandatory, destroying context chain and closing connection for device {}.",
229 destroyContextChain(deviceInfo);
234 public void onMasterRoleAcquired(final DeviceInfo deviceInfo, final ContextChainMastershipState mastershipState) {
235 final ContextChain contextChain = contextChainMap.get(deviceInfo);
236 if (contextChain != null) {
237 if (!ContextChainMastershipState.INITIAL_SUBMIT.equals(mastershipState)) {
238 if (contextChain.isMastered(mastershipState, true)) {
239 Futures.addCallback(ownershipChangeListener.becomeMasterBeforeSubmittedDS(deviceInfo),
240 reconciliationFrameworkCallback(deviceInfo, contextChain, mastershipState),
241 MoreExecutors.directExecutor());
243 } else if (contextChain.isMastered(mastershipState, false)) {
244 LOG.info("Role MASTER was granted to device {}", deviceInfo);
245 OF_EVENT_LOG.debug("Master Elected, Node: {}", deviceInfo.getDatapathId());
246 deviceManager.sendNodeAddedNotification(deviceInfo.getNodeInstanceIdentifier());
252 public void onSlaveRoleAcquired(final DeviceInfo deviceInfo) {
253 ownershipChangeListener.becomeSlaveOrDisconnect(deviceInfo);
254 LOG.info("Role SLAVE was granted to device {}", deviceInfo);
255 final ContextChain contextChain = contextChainMap.get(deviceInfo);
256 if (contextChain != null) {
257 contextChain.makeContextChainStateSlave();
262 public void onSlaveRoleNotAcquired(final DeviceInfo deviceInfo, final String reason) {
263 LOG.error("Not able to set SLAVE role on device {}, reason: {}", deviceInfo, reason);
264 if (contextChainMap.containsKey(deviceInfo)) {
265 destroyContextChain(deviceInfo);
270 public void onDeviceDisconnected(final ConnectionContext connectionContext) {
271 final DeviceInfo deviceInfo = connectionContext.getDeviceInfo();
272 if (deviceInfo != null) {
273 final ContextChain contextChain = contextChainMap.get(deviceInfo);
274 if (contextChain != null) {
275 if (contextChain.auxiliaryConnectionDropped(connectionContext)) {
276 LOG.info("Auxiliary connection from device {} disconnected.", deviceInfo);
278 LOG.info("Device {} disconnected.", deviceInfo);
279 destroyContextChain(deviceInfo);
286 boolean checkAllManagers() {
287 return deviceManager != null && rpcManager != null && statisticsManager != null && roleManager != null;
291 public ContextChain getContextChain(final DeviceInfo deviceInfo) {
292 return contextChainMap.get(deviceInfo);
296 public void close() {
297 Map<DeviceInfo, ContextChain> copyOfChains = new HashMap<>(contextChainMap);
298 copyOfChains.keySet().forEach(this::destroyContextChain);
299 copyOfChains.clear();
300 contextChainMap.clear();
301 OF_EVENT_LOG.debug("EOS registration closed for all devices");
302 eosListenerRegistration.close();
303 OF_EVENT_LOG.debug("EOS registration closed for all devices");
304 nodeCleanerExecutor.shutdownNow();
308 @SuppressFBWarnings("BC_UNCONFIRMED_CAST_OF_RETURN_VALUE")
309 public void ownershipChanged(final EntityOwnershipChange entityOwnershipChange) {
310 LOG.info("Entity ownership change received for node : {}", entityOwnershipChange);
311 if (entityOwnershipChange.inJeopardy()) {
312 LOG.warn("Controller is in Jeopardy, ignore ownership change notification. {}", entityOwnershipChange);
315 if (entityOwnershipChange.getState().hasOwner()) {
319 // Findbugs flags a false violation for "Unchecked/unconfirmed cast" from GenericEntity to Entity hence the
320 // suppression above. The suppression is temporary until EntityOwnershipChange is modified to eliminate the
322 final String entityName = entityOwnershipChange
325 .firstKeyOf(Entity.class)
328 if (entityName != null && entityName.startsWith("openflow:")) {
329 if (nodeCleanerExecutor.isShutdown()) {
330 LOG.warn("Node cleaner executor thread-pool is down.");
333 LOG.debug("Device {} will be removed from datastore in {} msec, if it's not transient notification.",
334 entityName, config.getDeviceDatastoreRemovalDelay().getValue());
335 final String dpnId = getDpnIdFromNodeName(entityName);
336 nodeCleanerExecutor.schedule(() -> {
338 EntityOwnershipState ownershipState = getCurrentOwnershipStatus(entityName);
339 if (ownershipState == null || EntityOwnershipState.NO_OWNER.equals(ownershipState)) {
340 LOG.debug("Entity {} has no owner", entityName);
341 final KeyedInstanceIdentifier<Node, NodeKey> nodeInstanceIdentifier =
342 DeviceStateUtil.createNodeInstanceIdentifier(new NodeId(entityName));
343 deviceManager.sendNodeRemovedNotification(nodeInstanceIdentifier);
344 LOG.info("Try to remove device {} from operational DS", entityName);
345 ListenableFuture<?> future =
346 deviceManager.removeDeviceFromOperationalDS(nodeInstanceIdentifier);
347 Futures.addCallback(future, new FutureCallback<Object>() {
349 public void onSuccess(final Object result) {
350 LOG.debug("Node removed from Oper DS, Node: {}", dpnId);
351 OF_EVENT_LOG.debug("Node removed from Oper DS, Node: {}", dpnId);
355 public void onFailure(final Throwable throwable) {
356 LOG.error("Could not remove device {} from operational DS", dpnId, throwable);
358 }, MoreExecutors.directExecutor());
359 future.get(REMOVE_DEVICE_FROM_DS_TIMEOUT, TimeUnit.MILLISECONDS);
361 LOG.warn("Seems like device is still owned by other controller instance. Skip deleting {} "
362 + "node from operational datastore.", entityName);
364 } catch (TimeoutException | ExecutionException | NullPointerException | InterruptedException e) {
365 LOG.warn("Not able to remove device {} from operational DS. ", entityName, e);
367 }, config.getDeviceDatastoreRemovalDelay().getValue().toJava(), TimeUnit.MILLISECONDS);
371 private void destroyContextChain(final DeviceInfo deviceInfo) {
372 OF_EVENT_LOG.debug("Destroying context chain for device {}", deviceInfo.getDatapathId());
373 ownershipChangeListener.becomeSlaveOrDisconnect(deviceInfo);
374 final ContextChain contextChain = contextChainMap.get(deviceInfo);
375 if (contextChain != null) {
376 deviceManager.sendNodeRemovedNotification(deviceInfo.getNodeInstanceIdentifier());
377 contextChain.close();
378 connectingDevices.remove(deviceInfo);
383 public List<DeviceInfo> listOfMasteredDevices() {
384 return contextChainMap.entrySet().stream()
385 .filter(deviceInfoContextChainEntry -> deviceInfoContextChainEntry.getValue()
386 .isMastered(ContextChainMastershipState.CHECK, false)).map(Map.Entry::getKey)
387 .collect(Collectors.toList());
391 public boolean isAnyDeviceMastered() {
392 return contextChainMap.entrySet().stream().findAny()
393 .filter(deviceInfoContextChainEntry -> deviceInfoContextChainEntry.getValue()
394 .isMastered(ContextChainMastershipState.CHECK, false)).isPresent();
398 public void onDeviceRemoved(final DeviceInfo deviceInfo) {
399 contextChainMap.remove(deviceInfo);
400 LOG.debug("Context chain removed for node {}", deviceInfo);
403 private FutureCallback<ResultState> reconciliationFrameworkCallback(@NonNull final DeviceInfo deviceInfo,
404 final ContextChain contextChain, final ContextChainMastershipState mastershipState) {
405 return new FutureCallback<>() {
407 public void onSuccess(final ResultState result) {
408 if (ResultState.DONOTHING == result) {
409 OF_EVENT_LOG.debug("Device {} connection is enabled by reconciliation framework", deviceInfo);
410 LOG.info("Device {} connection is enabled by reconciliation framework.", deviceInfo);
411 if (mastershipState == ContextChainMastershipState.MASTER_ON_DEVICE) {
412 ownershipChangeListener.becomeMaster(deviceInfo);
413 contextChain.initializeDevice();
415 contextChain.continueInitializationAfterReconciliation();
417 OF_EVENT_LOG.debug("Reconciliation framework failure for device {}", deviceInfo);
418 LOG.warn("Reconciliation framework failure for device {} with resultState {}", deviceInfo, result);
419 destroyContextChain(deviceInfo);
424 public void onFailure(final Throwable throwable) {
425 OF_EVENT_LOG.debug("Reconciliation framework failure for device {} with error {}", deviceInfo,
426 throwable.getMessage());
427 LOG.warn("Reconciliation framework failure for device {}", deviceInfo, throwable);
428 destroyContextChain(deviceInfo);
433 private static String getDpnIdFromNodeName(final String nodeName) {
434 return nodeName.substring(nodeName.lastIndexOf(SEPARATOR) + 1);
437 private @Nullable EntityOwnershipState getCurrentOwnershipStatus(final String nodeId) {
438 org.opendaylight.mdsal.eos.binding.api.Entity entity = createNodeEntity(nodeId);
439 Optional<EntityOwnershipState> ownershipStatus
440 = entityOwnershipService.getOwnershipState(entity);
442 if (ownershipStatus.isPresent()) {
443 LOG.debug("Current ownership status for node {} is {}", nodeId, ownershipStatus.get());
444 return ownershipStatus.get();
447 LOG.trace("Ownership status is not available for node {}", nodeId);
451 private static org.opendaylight.mdsal.eos.binding.api.Entity createNodeEntity(final String nodeId) {
452 return new org.opendaylight.mdsal.eos.binding.api.Entity(ASYNC_SERVICE_ENTITY_TYPE, nodeId);