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.openflowplugin.impl.role;
10 import com.google.common.annotations.VisibleForTesting;
11 import com.google.common.base.Preconditions;
12 import com.google.common.base.Verify;
13 import com.google.common.collect.Iterators;
14 import com.google.common.util.concurrent.CheckedFuture;
15 import com.google.common.util.concurrent.FutureCallback;
16 import com.google.common.util.concurrent.Futures;
17 import com.google.common.util.concurrent.JdkFutureAdapters;
18 import com.google.common.util.concurrent.ListenableFuture;
19 import io.netty.util.TimerTask;
20 import java.util.ArrayList;
21 import java.util.Iterator;
22 import java.util.List;
23 import java.util.concurrent.ConcurrentHashMap;
24 import java.util.concurrent.ConcurrentMap;
25 import java.util.concurrent.Future;
26 import java.util.concurrent.TimeUnit;
27 import javax.annotation.CheckForNull;
28 import javax.annotation.Nonnull;
29 import javax.annotation.Nullable;
30 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
31 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
32 import org.opendaylight.controller.md.sal.common.api.clustering.Entity;
33 import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipChange;
34 import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipListener;
35 import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipListenerRegistration;
36 import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipService;
37 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
38 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
39 import org.opendaylight.openflowplugin.api.OFConstants;
40 import org.opendaylight.openflowplugin.api.openflow.OFPContext;
41 import org.opendaylight.openflowplugin.api.openflow.device.DeviceContext;
42 import org.opendaylight.openflowplugin.api.openflow.device.DeviceInfo;
43 import org.opendaylight.openflowplugin.api.openflow.device.handlers.DeviceInitializationPhaseHandler;
44 import org.opendaylight.openflowplugin.api.openflow.device.handlers.DeviceTerminationPhaseHandler;
45 import org.opendaylight.openflowplugin.api.openflow.lifecycle.LifecycleConductor;
46 import org.opendaylight.openflowplugin.api.openflow.lifecycle.RoleChangeListener;
47 import org.opendaylight.openflowplugin.api.openflow.lifecycle.ServiceChangeListener;
48 import org.opendaylight.openflowplugin.api.openflow.role.RoleContext;
49 import org.opendaylight.openflowplugin.api.openflow.role.RoleManager;
50 import org.opendaylight.openflowplugin.impl.services.SalRoleServiceImpl;
51 import org.opendaylight.openflowplugin.impl.util.DeviceStateUtil;
52 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
53 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRef;
54 import org.opendaylight.yang.gen.v1.urn.opendaylight.role.service.rev150727.OfpRole;
55 import org.opendaylight.yang.gen.v1.urn.opendaylight.role.service.rev150727.SetRoleInput;
56 import org.opendaylight.yang.gen.v1.urn.opendaylight.role.service.rev150727.SetRoleInputBuilder;
57 import org.opendaylight.yang.gen.v1.urn.opendaylight.role.service.rev150727.SetRoleOutput;
58 import org.opendaylight.yangtools.yang.common.RpcResult;
59 import org.slf4j.Logger;
60 import org.slf4j.LoggerFactory;
63 * Gets invoked from RpcManagerInitial, registers a candidate with EntityOwnershipService.
64 * On receipt of the ownership notification, makes an rpc call to SalRoleService.
66 * Hands over to StatisticsManager at the end.
68 public class RoleManagerImpl implements RoleManager, EntityOwnershipListener, ServiceChangeListener {
69 private static final Logger LOG = LoggerFactory.getLogger(RoleManagerImpl.class);
71 // Maximum limit of timeout retries when cleaning DS, to prevent infinite recursive loops
72 private static final int MAX_CLEAN_DS_RETRIES = 3;
74 private DeviceInitializationPhaseHandler deviceInitializationPhaseHandler;
75 private DeviceTerminationPhaseHandler deviceTerminationPhaseHandler;
76 private final DataBroker dataBroker;
77 private final EntityOwnershipService entityOwnershipService;
78 private final ConcurrentMap<DeviceInfo, RoleContext> contexts = new ConcurrentHashMap<>();
79 private final ConcurrentMap<Entity, RoleContext> watchingEntities = new ConcurrentHashMap<>();
80 private final EntityOwnershipListenerRegistration entityOwnershipListenerRegistration;
81 private final EntityOwnershipListenerRegistration txEntityOwnershipListenerRegistration;
82 private List<RoleChangeListener> listeners = new ArrayList<>();
84 private final LifecycleConductor conductor;
86 public RoleManagerImpl(final EntityOwnershipService entityOwnershipService, final DataBroker dataBroker, final LifecycleConductor lifecycleConductor) {
87 this.entityOwnershipService = Preconditions.checkNotNull(entityOwnershipService);
88 this.dataBroker = Preconditions.checkNotNull(dataBroker);
89 this.entityOwnershipListenerRegistration = Preconditions.checkNotNull(entityOwnershipService.registerListener(RoleManager.ENTITY_TYPE, this));
90 this.txEntityOwnershipListenerRegistration = Preconditions.checkNotNull(entityOwnershipService.registerListener(TX_ENTITY_TYPE, this));
91 this.conductor = lifecycleConductor;
92 LOG.debug("Register OpenflowOwnershipListener to all entity ownership changes");
96 public void setDeviceInitializationPhaseHandler(final DeviceInitializationPhaseHandler handler) {
97 deviceInitializationPhaseHandler = handler;
101 public void onDeviceContextLevelUp(@CheckForNull final DeviceInfo deviceInfo) throws Exception {
102 final DeviceContext deviceContext = Preconditions.checkNotNull(conductor.getDeviceContext(deviceInfo));
103 final RoleContext roleContext = new RoleContextImpl(deviceInfo, entityOwnershipService, makeEntity(deviceInfo.getNodeId()), makeTxEntity(deviceInfo.getNodeId()), conductor);
104 roleContext.setSalRoleService(new SalRoleServiceImpl(roleContext, deviceContext));
105 Verify.verify(contexts.putIfAbsent(deviceInfo, roleContext) == null, "Role context for master Node %s is still not closed.", deviceInfo.getNodeId());
106 makeDeviceRoleChange(OfpRole.BECOMESLAVE, roleContext, true);
107 /* First start to watch entity so we don't miss any notification, and then try to register in EOS */
108 watchingEntities.put(roleContext.getEntity(), roleContext);
109 notifyListenersRoleInitializationDone(roleContext.getDeviceInfo(), roleContext.initialization());
110 deviceInitializationPhaseHandler.onDeviceContextLevelUp(deviceInfo);
114 public void close() {
115 LOG.debug("Close method on role manager was called.");
116 entityOwnershipListenerRegistration.close();
117 txEntityOwnershipListenerRegistration.close();
118 for (final Iterator<RoleContext> iterator = Iterators.consumingIterator(contexts.values().iterator()); iterator.hasNext();) {
119 // got here because last known role is LEADER and DS might need clearing up
120 final RoleContext roleContext = iterator.next();
121 watchingEntities.remove(roleContext.getEntity());
122 watchingEntities.remove(roleContext.getTxEntity());
123 contexts.remove(roleContext.getDeviceInfo());
124 if (roleContext.isTxCandidateRegistered()) {
125 LOG.info("Node {} was holder txEntity, so trying to remove device from operational DS.");
126 removeDeviceFromOperationalDS(roleContext.getDeviceInfo(), MAX_CLEAN_DS_RETRIES);
134 public void onDeviceContextLevelDown(final DeviceInfo deviceInfo) {
135 LOG.trace("onDeviceContextLevelDown for node {}", deviceInfo.getNodeId());
136 final RoleContext roleContext = contexts.get(deviceInfo);
137 if (roleContext != null) {
138 LOG.debug("Found roleContext associated to deviceContext: {}, now trying close the roleContext", deviceInfo.getNodeId());
139 if (roleContext.isMainCandidateRegistered()) {
140 roleContext.unregisterCandidate(roleContext.getEntity());
142 contexts.remove(deviceInfo.getNodeId(), roleContext);
146 deviceTerminationPhaseHandler.onDeviceContextLevelDown(deviceInfo);
150 static Entity makeEntity(final NodeId nodeId) {
151 return new Entity(RoleManager.ENTITY_TYPE, nodeId.getValue());
155 static Entity makeTxEntity(final NodeId nodeId) {
156 return new Entity(RoleManager.TX_ENTITY_TYPE, nodeId.getValue());
160 public void ownershipChanged(final EntityOwnershipChange ownershipChange) {
162 Preconditions.checkArgument(ownershipChange != null);
163 final RoleContext roleContext = watchingEntities.get(ownershipChange.getEntity());
165 LOG.debug("Received EOS message: wasOwner:{} isOwner:{} hasOwner:{} inJeopardy:{} for entity type {} and node {}",
166 ownershipChange.wasOwner(), ownershipChange.isOwner(), ownershipChange.hasOwner(), ownershipChange.inJeopardy(),
167 ownershipChange.getEntity().getType(),
168 roleContext != null ? roleContext.getDeviceInfo().getNodeId() : "-> no watching entity, disregarding notification <-");
170 if (roleContext != null) {
171 if (ownershipChange.getEntity().equals(roleContext.getEntity())) {
172 changeOwnershipForMainEntity(ownershipChange, roleContext);
174 changeOwnershipForTxEntity(ownershipChange, roleContext);
177 LOG.debug("OwnershipChange {}", ownershipChange);
183 void changeOwnershipForMainEntity(final EntityOwnershipChange ownershipChange, final RoleContext roleContext) {
185 if (roleContext.isMainCandidateRegistered()) {
186 LOG.debug("Main-EntityOwnershipRegistration is active for entity type {} and node {}",
187 ownershipChange.getEntity().getType(), roleContext.getDeviceInfo().getNodeId());
188 if (!ownershipChange.wasOwner() && ownershipChange.isOwner() && !ownershipChange.inJeopardy()) {
190 LOG.debug("SLAVE to MASTER for node {}", roleContext.getDeviceInfo().getNodeId());
191 if (roleContext.registerCandidate(roleContext.getTxEntity())) {
192 LOG.debug("Starting watching tx entity for node {}", roleContext.getDeviceInfo().getNodeId());
193 watchingEntities.putIfAbsent(roleContext.getTxEntity(), roleContext);
195 } else if ((ownershipChange.wasOwner() && !ownershipChange.isOwner()) || (ownershipChange.inJeopardy())) {
197 LOG.debug("MASTER to SLAVE for node {}", roleContext.getDeviceInfo().getNodeId());
198 conductor.addOneTimeListenerWhenServicesChangesDone(this, roleContext.getDeviceInfo());
199 makeDeviceRoleChange(OfpRole.BECOMESLAVE, roleContext, false);
202 LOG.debug("Main-EntityOwnershipRegistration is not active for entity type {} and node {}",
203 ownershipChange.getEntity(), roleContext.getDeviceInfo().getNodeId());
204 watchingEntities.remove(ownershipChange.getEntity(), roleContext);
205 if (roleContext.isTxCandidateRegistered()) {
206 LOG.debug("tx candidate still registered for node {}, probably connection lost, trying to unregister tx candidate", roleContext.getDeviceInfo().getNodeId());
207 roleContext.unregisterCandidate(roleContext.getTxEntity());
208 if (ownershipChange.wasOwner() && !ownershipChange.isOwner() && !ownershipChange.hasOwner()) {
209 LOG.debug("Trying to remove from operational node: {}", roleContext.getDeviceInfo().getNodeId());
210 removeDeviceFromOperationalDS(roleContext.getDeviceInfo(), MAX_CLEAN_DS_RETRIES);
213 contexts.remove(roleContext.getDeviceInfo(), roleContext);
215 conductor.closeConnection(roleContext.getDeviceInfo());
221 void changeOwnershipForTxEntity(final EntityOwnershipChange ownershipChange,
222 @Nonnull final RoleContext roleContext) {
224 if (roleContext.isTxCandidateRegistered()) {
225 LOG.debug("Tx-EntityOwnershipRegistration is active for entity type {} and node {}",
226 ownershipChange.getEntity().getType(),
227 roleContext.getDeviceInfo().getNodeId());
228 if (ownershipChange.inJeopardy()) {
229 LOG.warn("Getting 'inJeopardy' flag from EOS. Removing txCandidate and stopping watching txCandidate.");
230 watchingEntities.remove(roleContext.getTxEntity());
231 roleContext.unregisterCandidate(roleContext.getTxEntity());
233 if (!ownershipChange.wasOwner() && ownershipChange.isOwner()) {
235 LOG.debug("SLAVE to MASTER for node {}", roleContext.getDeviceInfo().getNodeId());
236 makeDeviceRoleChange(OfpRole.BECOMEMASTER, roleContext, false);
237 } else if (ownershipChange.wasOwner() && !ownershipChange.isOwner()) {
239 LOG.debug("MASTER to SLAVE for node {}", roleContext.getDeviceInfo().getNodeId());
240 LOG.warn("Tx-EntityOwnershipRegistration lost leadership entity type {} and node {}",
241 ownershipChange.getEntity().getType(), roleContext.getDeviceInfo().getNodeId());
242 watchingEntities.remove(roleContext.getTxEntity(), roleContext);
243 watchingEntities.remove(roleContext.getEntity(), roleContext);
244 roleContext.unregisterCandidate(roleContext.getEntity());
245 roleContext.unregisterCandidate(roleContext.getTxEntity());
246 if (!ownershipChange.hasOwner()) {
247 LOG.debug("Trying to remove from operational node: {}", roleContext.getDeviceInfo().getNodeId());
248 removeDeviceFromOperationalDS(roleContext.getDeviceInfo(), MAX_CLEAN_DS_RETRIES);
250 contexts.remove(roleContext.getDeviceInfo(), roleContext);
252 conductor.closeConnection(roleContext.getDeviceInfo());
257 LOG.debug("Tx-EntityOwnershipRegistration is not active for entity type {} and node {}", ownershipChange.getEntity().getType(), roleContext.getDeviceInfo().getNodeId());
258 watchingEntities.remove(roleContext.getTxEntity(), roleContext);
259 contexts.remove(roleContext.getDeviceInfo(), roleContext);
261 conductor.closeConnection(roleContext.getDeviceInfo());
266 void makeDeviceRoleChange(final OfpRole role, final RoleContext roleContext, final Boolean init) {
267 final ListenableFuture<RpcResult<SetRoleOutput>> roleChangeFuture = sendRoleChangeToDevice(role, roleContext);
268 Futures.addCallback(roleChangeFuture, new FutureCallback<RpcResult<SetRoleOutput>>() {
270 public void onSuccess(@Nullable final RpcResult<SetRoleOutput> setRoleOutputRpcResult) {
271 LOG.info("Role {} successfully set on device {}", role, roleContext.getDeviceInfo().getNodeId());
273 notifyListenersRoleChangeOnDevice(roleContext.getDeviceInfo(), role);
278 public void onFailure(@Nonnull final Throwable throwable) {
279 LOG.warn("Unable to set role {} on device {}", role, roleContext.getDeviceInfo().getNodeId());
280 conductor.closeConnection(roleContext.getDeviceInfo());
286 ListenableFuture<RpcResult<SetRoleOutput>> sendRoleChangeToDevice(final OfpRole newRole, final RoleContext roleContext) {
287 LOG.debug("Sending new role {} to device {}", newRole, roleContext.getDeviceInfo().getNodeId());
288 final Future<RpcResult<SetRoleOutput>> setRoleOutputFuture;
289 final Short version = roleContext.getDeviceInfo().getVersion();
290 if (null == version) {
291 LOG.debug("Device version is null");
292 return Futures.immediateFuture(null);
294 if (version < OFConstants.OFP_VERSION_1_3) {
295 LOG.debug("Device version not support ROLE");
296 return Futures.immediateFuture(null);
298 final SetRoleInput setRoleInput = (new SetRoleInputBuilder()).setControllerRole(newRole)
299 .setNode(new NodeRef(DeviceStateUtil.createNodeInstanceIdentifier(roleContext.getDeviceInfo().getNodeId()))).build();
300 setRoleOutputFuture = roleContext.getSalRoleService().setRole(setRoleInput);
301 final TimerTask timerTask = timeout -> {
302 if (!setRoleOutputFuture.isDone()) {
303 LOG.warn("New role {} was not propagated to device {} during 10 sec", newRole, roleContext.getDeviceInfo().getNodeId());
304 setRoleOutputFuture.cancel(true);
307 conductor.newTimeout(timerTask, 10, TimeUnit.SECONDS);
309 return JdkFutureAdapters.listenInPoolThread(setRoleOutputFuture);
313 CheckedFuture<Void, TransactionCommitFailedException> removeDeviceFromOperationalDS(final DeviceInfo deviceInfo, final int numRetries) {
314 final WriteTransaction delWtx = dataBroker.newWriteOnlyTransaction();
315 delWtx.delete(LogicalDatastoreType.OPERATIONAL, DeviceStateUtil.createNodeInstanceIdentifier(deviceInfo.getNodeId()));
316 final CheckedFuture<Void, TransactionCommitFailedException> delFuture = delWtx.submit();
318 Futures.addCallback(delFuture, new FutureCallback<Void>() {
320 public void onSuccess(final Void result) {
321 LOG.debug("Delete Node {} was successful", deviceInfo);
322 final RoleContext roleContext = contexts.remove(deviceInfo);
323 if (roleContext != null) {
329 public void onFailure(@Nonnull final Throwable t) {
330 // If we have any retries left, we will try to clean the datastore again
331 if (numRetries > 0) {
332 // We "used" one retry here, so decrement it
333 final int curRetries = numRetries - 1;
334 LOG.debug("Delete node {} failed with exception {}. Trying again (retries left: {})", deviceInfo.getNodeId(), t, curRetries);
335 // Recursive call to this method with "one less" retry
336 removeDeviceFromOperationalDS(deviceInfo, curRetries);
340 // No retries left, so we will just close the role context, and ignore datastore cleanup
341 LOG.warn("Delete node {} failed with exception {}. No retries left, aborting", deviceInfo.getNodeId(), t);
342 final RoleContext roleContext = contexts.remove(deviceInfo);
343 if (roleContext != null) {
353 public void setDeviceTerminationPhaseHandler(final DeviceTerminationPhaseHandler handler) {
354 deviceTerminationPhaseHandler = handler;
358 public void servicesChangeDone(final DeviceInfo deviceInfo, final boolean success) {
359 LOG.debug("Services stopping done for node {} as " + (success ? "successful" : "unsuccessful"), deviceInfo);
360 final RoleContext roleContext = contexts.get(deviceInfo);
361 if (null != roleContext) {
362 /* Services stopped or failure */
363 roleContext.unregisterCandidate(roleContext.getTxEntity());
368 RoleContext getRoleContext(final DeviceInfo deviceInfo){
369 return contexts.get(deviceInfo);
373 * This method is only for testing
376 void setRoleContext(DeviceInfo deviceInfo, RoleContext roleContext){
377 if(!contexts.containsKey(deviceInfo)) {
378 contexts.put(deviceInfo, roleContext);
383 public void addRoleChangeListener(final RoleChangeListener roleChangeListener) {
384 this.listeners.add(roleChangeListener);
388 * Invoked when initialization phase is done
389 * @param deviceInfo node identification
390 * @param success true if initialization done ok, false otherwise
393 void notifyListenersRoleInitializationDone(final DeviceInfo deviceInfo, final boolean success){
394 LOG.debug("Notifying registered listeners for role initialization done, no. of listeners {}", listeners.size());
395 for (final RoleChangeListener listener : listeners) {
396 listener.roleInitializationDone(deviceInfo, success);
401 * Notifies registered listener on role change. Role is the new role on device
402 * If initialization phase is true, we may skip service starting
404 * @param role new role meant to be set on device
407 void notifyListenersRoleChangeOnDevice(final DeviceInfo deviceInfo, final OfpRole role){
408 LOG.debug("Notifying registered listeners for role change, no. of listeners {}", listeners.size());
409 for (final RoleChangeListener listener : listeners) {
410 listener.roleChangeOnDevice(deviceInfo, role);
415 public <T extends OFPContext> T gainContext(DeviceInfo deviceInfo) {
416 return (T) contexts.get(deviceInfo);