2 * Copyright (c) 2014 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.ovsdb.southbound;
10 import static org.opendaylight.ovsdb.lib.operations.Operations.op;
12 import java.net.InetAddress;
13 import java.net.UnknownHostException;
14 import java.util.ArrayList;
15 import java.util.List;
17 import java.util.concurrent.ConcurrentHashMap;
18 import java.util.concurrent.ExecutionException;
20 import javax.annotation.Nonnull;
22 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
23 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
24 import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
25 import org.opendaylight.controller.md.sal.common.api.clustering.CandidateAlreadyRegisteredException;
26 import org.opendaylight.controller.md.sal.common.api.clustering.Entity;
27 import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipCandidateRegistration;
28 import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipChange;
29 import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipListener;
30 import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipListenerRegistration;
31 import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipService;
32 import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipState;
33 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
34 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
35 import org.opendaylight.ovsdb.lib.OvsdbClient;
36 import org.opendaylight.ovsdb.lib.OvsdbConnection;
37 import org.opendaylight.ovsdb.lib.OvsdbConnectionListener;
38 import org.opendaylight.ovsdb.lib.operations.Operation;
39 import org.opendaylight.ovsdb.lib.operations.OperationResult;
40 import org.opendaylight.ovsdb.lib.operations.Select;
41 import org.opendaylight.ovsdb.lib.schema.DatabaseSchema;
42 import org.opendaylight.ovsdb.lib.schema.GenericTableSchema;
43 import org.opendaylight.ovsdb.lib.schema.typed.TyperUtils;
44 import org.opendaylight.ovsdb.schema.openvswitch.OpenVSwitch;
45 import org.opendaylight.ovsdb.southbound.transactions.md.OvsdbNodeRemoveCommand;
46 import org.opendaylight.ovsdb.southbound.transactions.md.TransactionCommand;
47 import org.opendaylight.ovsdb.southbound.transactions.md.TransactionInvoker;
48 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbBridgeAttributes;
49 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbBridgeAugmentation;
50 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbNodeAugmentation;
51 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.node.attributes.ConnectionInfo;
52 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.node.attributes.ManagedNodeEntry;
53 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
54 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
55 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
56 import org.slf4j.Logger;
57 import org.slf4j.LoggerFactory;
59 import com.google.common.base.Optional;
60 import com.google.common.base.Preconditions;
61 import com.google.common.util.concurrent.CheckedFuture;
63 public class OvsdbConnectionManager implements OvsdbConnectionListener, AutoCloseable {
64 private Map<ConnectionInfo, OvsdbConnectionInstance> clients =
65 new ConcurrentHashMap<>();
66 private static final Logger LOG = LoggerFactory.getLogger(OvsdbConnectionManager.class);
67 private static final String ENTITY_TYPE = "ovsdb";
69 private DataBroker db;
70 private TransactionInvoker txInvoker;
71 private Map<ConnectionInfo,InstanceIdentifier<Node>> instanceIdentifiers =
72 new ConcurrentHashMap<>();
73 private Map<Entity, OvsdbConnectionInstance> entityConnectionMap =
74 new ConcurrentHashMap<>();
75 private EntityOwnershipService entityOwnershipService;
76 private OvsdbDeviceEntityOwnershipListener ovsdbDeviceEntityOwnershipListener;
77 private OvsdbConnection ovsdbConnection;
79 public OvsdbConnectionManager(DataBroker db,TransactionInvoker txInvoker,
80 EntityOwnershipService entityOwnershipService,
81 OvsdbConnection ovsdbConnection) {
83 this.txInvoker = txInvoker;
84 this.entityOwnershipService = entityOwnershipService;
85 this.ovsdbDeviceEntityOwnershipListener = new OvsdbDeviceEntityOwnershipListener(this, entityOwnershipService);
86 this.ovsdbConnection = ovsdbConnection;
90 public void connected(@Nonnull final OvsdbClient externalClient) {
91 LOG.info("Library connected {} from {}:{} to {}:{}",
92 externalClient.getConnectionInfo().getType(),
93 externalClient.getConnectionInfo().getRemoteAddress(),
94 externalClient.getConnectionInfo().getRemotePort(),
95 externalClient.getConnectionInfo().getLocalAddress(),
96 externalClient.getConnectionInfo().getLocalPort());
97 if(externalClient.getSchema(SouthboundConstants.OPEN_V_SWITCH) != null) {
98 OvsdbConnectionInstance client = connectedButCallBacksNotRegistered(externalClient);
99 // Register Cluster Ownership for ConnectionInfo
100 registerEntityForOwnership(client);
104 public OvsdbConnectionInstance connectedButCallBacksNotRegistered(final OvsdbClient externalClient) {
105 LOG.info("OVSDB Connection from {}:{}",externalClient.getConnectionInfo().getRemoteAddress(),
106 externalClient.getConnectionInfo().getRemotePort());
107 ConnectionInfo key = SouthboundMapper.createConnectionInfo(externalClient);
108 OvsdbConnectionInstance ovsdbConnectionInstance = getConnectionInstance(key);
110 // Check if existing ovsdbConnectionInstance for the OvsdbClient present.
111 // In such cases, we will see if the ovsdbConnectionInstance has same externalClient.
112 if (ovsdbConnectionInstance != null) {
113 if (ovsdbConnectionInstance.hasOvsdbClient(externalClient)) {
114 LOG.warn("OVSDB Connection Instance {} already exists for client {}", key, externalClient);
115 return ovsdbConnectionInstance;
117 LOG.warn("OVSDB Connection Instance {} being replaced with client {}", key, externalClient);
119 // Unregister Cluster Ownership for ConnectionInfo
120 // Because the ovsdbConnectionInstance is about to be completely replaced!
121 unregisterEntityForOwnership(ovsdbConnectionInstance);
123 ovsdbConnectionInstance.disconnect();
125 removeConnectionInstance(key);
128 ovsdbConnectionInstance = new OvsdbConnectionInstance(key, externalClient, txInvoker,
129 getInstanceIdentifier(key));
130 ovsdbConnectionInstance.createTransactInvokers();
131 return ovsdbConnectionInstance;
135 public void disconnected(OvsdbClient client) {
136 LOG.info("Library disconnected {} from {}:{} to {}:{}. Cleaning up the operational data store",
137 client.getConnectionInfo().getType(),
138 client.getConnectionInfo().getRemoteAddress(),
139 client.getConnectionInfo().getRemotePort(),
140 client.getConnectionInfo().getLocalAddress(),
141 client.getConnectionInfo().getLocalPort());
142 ConnectionInfo key = SouthboundMapper.createConnectionInfo(client);
143 OvsdbConnectionInstance ovsdbConnectionInstance = getConnectionInstance(key);
144 if (ovsdbConnectionInstance != null) {
145 // Unregister Entity ownership as soon as possible ,so this instance should
146 // not be used as a candidate in Entity election (given that this instance is
147 // about to disconnect as well), if current owner get disconnected from
149 unregisterEntityForOwnership(ovsdbConnectionInstance);
151 txInvoker.invoke(new OvsdbNodeRemoveCommand(ovsdbConnectionInstance, null, null));
153 removeConnectionInstance(key);
155 LOG.warn("disconnected : Connection instance not found for OVSDB Node {} ", key);
157 LOG.trace("OvsdbConnectionManager: exit disconnected client: {}", client);
160 public OvsdbClient connect(InstanceIdentifier<Node> iid,
161 OvsdbNodeAugmentation ovsdbNode) throws UnknownHostException {
162 LOG.info("Connecting to {}", SouthboundUtil.connectionInfoToString(ovsdbNode.getConnectionInfo()));
164 // TODO handle case where we already have a connection
165 // TODO use transaction chains to handle ordering issues between disconnected
166 // TODO and connected when writing to the operational store
167 InetAddress ip = SouthboundMapper.createInetAddress(ovsdbNode.getConnectionInfo().getRemoteIp());
168 OvsdbClient client = ovsdbConnection.connect(ip,
169 ovsdbNode.getConnectionInfo().getRemotePort().getValue());
170 // For connections from the controller to the ovs instance, the library doesn't call
171 // this method for us
172 if (client != null) {
173 putInstanceIdentifier(ovsdbNode.getConnectionInfo(), iid.firstIdentifierOf(Node.class));
174 OvsdbConnectionInstance ovsdbConnectionInstance = connectedButCallBacksNotRegistered(client);
175 ovsdbConnectionInstance.setOvsdbNodeAugmentation(ovsdbNode);
177 // Register Cluster Ownership for ConnectionInfo
178 registerEntityForOwnership(ovsdbConnectionInstance);
180 LOG.warn("Failed to connect to OVSDB Node {}", ovsdbNode.getConnectionInfo());
185 public void disconnect(OvsdbNodeAugmentation ovsdbNode) throws UnknownHostException {
186 LOG.info("Disconnecting from {}", SouthboundUtil.connectionInfoToString(ovsdbNode.getConnectionInfo()));
187 OvsdbConnectionInstance client = getConnectionInstance(ovsdbNode.getConnectionInfo());
188 if (client != null) {
189 // Unregister Cluster Onwership for ConnectionInfo
190 unregisterEntityForOwnership(client);
194 removeInstanceIdentifier(ovsdbNode.getConnectionInfo());
196 LOG.debug("disconnect : connection instance not found for {}",ovsdbNode.getConnectionInfo());
200 /* public void init(ConnectionInfo key) {
201 OvsdbConnectionInstance client = getConnectionInstance(key);
203 // TODO (FF): make sure that this cluster instance is the 'entity owner' fo the given OvsdbConnectionInstance ?
205 if (client != null) {
207 * Note: registerCallbacks() is idemPotent... so if you call it repeatedly all is safe,
208 * it only registersCallbacks on the *first* call.
210 client.registerCallbacks();
215 public void close() throws Exception {
216 if (ovsdbDeviceEntityOwnershipListener != null) {
217 ovsdbDeviceEntityOwnershipListener.close();
220 for (OvsdbClient client: clients.values()) {
225 private void putConnectionInstance(ConnectionInfo key,OvsdbConnectionInstance instance) {
226 ConnectionInfo connectionInfo = SouthboundMapper.suppressLocalIpPort(key);
227 clients.put(connectionInfo, instance);
230 private void removeConnectionInstance(ConnectionInfo key) {
231 ConnectionInfo connectionInfo = SouthboundMapper.suppressLocalIpPort(key);
232 clients.remove(connectionInfo);
235 private void putInstanceIdentifier(ConnectionInfo key,InstanceIdentifier<Node> iid) {
236 ConnectionInfo connectionInfo = SouthboundMapper.suppressLocalIpPort(key);
237 instanceIdentifiers.put(connectionInfo, iid);
240 private void removeInstanceIdentifier(ConnectionInfo key) {
241 ConnectionInfo connectionInfo = SouthboundMapper.suppressLocalIpPort(key);
242 instanceIdentifiers.remove(connectionInfo);
245 public OvsdbConnectionInstance getConnectionInstance(ConnectionInfo key) {
246 ConnectionInfo connectionInfo = SouthboundMapper.suppressLocalIpPort(key);
247 return clients.get(connectionInfo);
250 public InstanceIdentifier<Node> getInstanceIdentifier(ConnectionInfo key) {
251 ConnectionInfo connectionInfo = SouthboundMapper.suppressLocalIpPort(key);
252 return instanceIdentifiers.get(connectionInfo);
255 public OvsdbConnectionInstance getConnectionInstance(OvsdbBridgeAttributes mn) {
256 Optional<OvsdbNodeAugmentation> optional = SouthboundUtil.getManagingNode(db, mn);
257 if (optional.isPresent()) {
258 return getConnectionInstance(optional.get().getConnectionInfo());
264 public OvsdbConnectionInstance getConnectionInstance(Node node) {
265 Preconditions.checkNotNull(node);
266 OvsdbNodeAugmentation ovsdbNode = node.getAugmentation(OvsdbNodeAugmentation.class);
267 OvsdbBridgeAugmentation ovsdbManagedNode = node.getAugmentation(OvsdbBridgeAugmentation.class);
268 if (ovsdbNode != null) {
269 return getConnectionInstance(ovsdbNode.getConnectionInfo());
270 } else if (ovsdbManagedNode != null) {
271 return getConnectionInstance(ovsdbManagedNode);
273 LOG.warn("This is not a node that gives any hint how to find its OVSDB Manager: {}",node);
278 public OvsdbConnectionInstance getConnectionInstance(InstanceIdentifier<Node> nodePath) {
280 ReadOnlyTransaction transaction = db.newReadOnlyTransaction();
281 CheckedFuture<Optional<Node>, ReadFailedException> nodeFuture = transaction.read(
282 LogicalDatastoreType.OPERATIONAL, nodePath);
284 Optional<Node> optional = nodeFuture.get();
285 if (optional != null && optional.isPresent() && optional.get() != null) {
286 return this.getConnectionInstance(optional.get());
288 LOG.warn("Found non-topological node {} on path {}",optional);
291 } catch (Exception e) {
292 LOG.warn("Failed to get Ovsdb Node {}",nodePath, e);
297 public OvsdbClient getClient(ConnectionInfo connectionInfo) {
298 return getConnectionInstance(connectionInfo);
301 public OvsdbClient getClient(OvsdbBridgeAttributes mn) {
302 return getConnectionInstance(mn);
305 public OvsdbClient getClient(Node node) {
306 return getConnectionInstance(node);
309 public Boolean getHasDeviceOwnership(ConnectionInfo connectionInfo) {
310 OvsdbConnectionInstance ovsdbConnectionInstance = getConnectionInstance(connectionInfo);
311 if (ovsdbConnectionInstance == null) {
312 return Boolean.FALSE;
314 return ovsdbConnectionInstance.getHasDeviceOwnership();
317 private void handleOwnershipChanged(EntityOwnershipChange ownershipChange) {
318 OvsdbConnectionInstance ovsdbConnectionInstance = getConnectionInstanceFromEntity(ownershipChange.getEntity());
319 LOG.debug("handleOwnershipChanged: {} event received for device {}",
320 ownershipChange, ovsdbConnectionInstance != null ? ovsdbConnectionInstance.getConnectionInfo()
321 : "that's currently NOT registered by *this* southbound plugin instance");
323 if (ovsdbConnectionInstance == null) {
324 if (ownershipChange.isOwner()) {
325 LOG.warn("handleOwnershipChanged: *this* instance is elected as an owner of the device {} but it "
326 + "is NOT registered for ownership", ownershipChange.getEntity());
328 // EntityOwnershipService sends notification to all the nodes, irrespective of whether
329 // that instance registered for the device ownership or not. It is to make sure that
330 // If all the controller instance that was connected to the device are down, so the
331 // running instance can clear up the operational data store even though it was not
332 // connected to the device.
333 LOG.debug("handleOwnershipChanged: No connection instance found for {}", ownershipChange.getEntity());
336 // If entity has no owner, clean up the operational data store (it's possible because owner controller
337 // might went down abruptly and didn't get a chance to clean up the operational data store.
338 if (!ownershipChange.hasOwner()) {
339 LOG.info("{} has no owner, cleaning up the operational data store", ownershipChange.getEntity());
340 cleanEntityOperationalData(ownershipChange.getEntity());
344 //Connection detail need to be cached, irrespective of ownership result.
345 putConnectionInstance(ovsdbConnectionInstance.getMDConnectionInfo(),ovsdbConnectionInstance);
347 if (ownershipChange.isOwner() == ovsdbConnectionInstance.getHasDeviceOwnership()) {
348 LOG.info("handleOwnershipChanged: no change in ownership for {}. Ownership status is : {}",
349 ovsdbConnectionInstance.getConnectionInfo(), ovsdbConnectionInstance.getHasDeviceOwnership()
350 ? SouthboundConstants.OWNERSHIPSTATES.OWNER.getState()
351 : SouthboundConstants.OWNERSHIPSTATES.NONOWNER.getState());
355 ovsdbConnectionInstance.setHasDeviceOwnership(ownershipChange.isOwner());
356 // You were not an owner, but now you are
357 if (ownershipChange.isOwner()) {
358 LOG.info("handleOwnershipChanged: *this* southbound plugin instance is an OWNER of the device {}",
359 ovsdbConnectionInstance.getConnectionInfo());
361 //*this* instance of southbound plugin is owner of the device,
362 //so register for monitor callbacks
363 ovsdbConnectionInstance.registerCallbacks();
366 //You were owner of the device, but now you are not. With the current ownership
367 //grant mechanism, this scenario should not occur. Because this scenario will occur
368 //when this controller went down or switch flap the connection, but in both the case
369 //it will go through the re-registration process. We need to implement this condition
370 //when clustering service implement a ownership grant strategy which can revoke the
371 //device ownership for load balancing the devices across the instances.
372 //Once this condition occur, we should unregister the callback.
373 LOG.error("handleOwnershipChanged: *this* southbound plugin instance is no longer the owner of device {}."
374 + "This should NOT happen.",
375 ovsdbConnectionInstance.getNodeId().getValue());
379 private void cleanEntityOperationalData(Entity entity) {
381 //Do explicit cleanup rather than using OvsdbNodeRemoveCommand, because there
382 // are chances that other controller instance went down abruptly and it does
383 // not clear manager entry, which OvsdbNodeRemoveCommand look for before cleanup.
385 @SuppressWarnings("unchecked") final InstanceIdentifier<Node> nodeIid =
386 (InstanceIdentifier<Node>) SouthboundUtil
387 .getInstanceIdentifierCodec().bindingDeserializer(entity.getId());
389 txInvoker.invoke(new TransactionCommand() {
391 public void execute(ReadWriteTransaction transaction) {
392 Optional<Node> ovsdbNodeOpt = SouthboundUtil.readNode(transaction, nodeIid);
393 if (ovsdbNodeOpt.isPresent()) {
394 Node ovsdbNode = ovsdbNodeOpt.get();
395 OvsdbNodeAugmentation nodeAugmentation = ovsdbNode.getAugmentation(OvsdbNodeAugmentation.class);
396 if (nodeAugmentation != null) {
397 if (nodeAugmentation.getManagedNodeEntry() != null) {
398 for (ManagedNodeEntry managedNode : nodeAugmentation.getManagedNodeEntry()) {
400 LogicalDatastoreType.OPERATIONAL, managedNode.getBridgeRef().getValue());
403 LOG.debug("{} had no managed nodes", ovsdbNode.getNodeId().getValue());
406 transaction.delete(LogicalDatastoreType.OPERATIONAL, nodeIid);
413 private OpenVSwitch getOpenVswitchTableEntry(OvsdbConnectionInstance connectionInstance) {
414 DatabaseSchema dbSchema = null;
415 OpenVSwitch openVSwitchRow = null;
417 dbSchema = connectionInstance.getSchema(OvsdbSchemaContants.databaseName).get();
418 } catch (InterruptedException | ExecutionException e) {
419 LOG.warn("Not able to fetch schema for database {} from device {}",
420 OvsdbSchemaContants.databaseName,connectionInstance.getConnectionInfo(),e);
422 if (dbSchema != null) {
423 GenericTableSchema openVSwitchSchema = TyperUtils.getTableSchema(dbSchema, OpenVSwitch.class);
425 List<String> openVSwitchTableColumn = new ArrayList<>();
426 openVSwitchTableColumn.addAll(openVSwitchSchema.getColumns());
427 Select<GenericTableSchema> selectOperation = op.select(openVSwitchSchema);
428 selectOperation.setColumns(openVSwitchTableColumn);
430 List<Operation> operations = new ArrayList<>();
431 operations.add(selectOperation);
432 operations.add(op.comment("Fetching Open_VSwitch table rows"));
434 List<OperationResult> results = connectionInstance.transact(dbSchema, operations).get();
435 if (results != null ) {
436 OperationResult selectResult = results.get(0);
437 openVSwitchRow = TyperUtils.getTypedRowWrapper(
438 dbSchema,OpenVSwitch.class,selectResult.getRows().get(0));
441 } catch (InterruptedException | ExecutionException e) {
442 LOG.warn("Not able to fetch OpenVswitch table row from device {}",
443 connectionInstance.getConnectionInfo(),e);
446 return openVSwitchRow;
448 private Entity getEntityFromConnectionInstance(@Nonnull OvsdbConnectionInstance ovsdbConnectionInstance) {
449 InstanceIdentifier<Node> iid = ovsdbConnectionInstance.getInstanceIdentifier();
451 /* Switch initiated connection won't have iid, till it gets OpenVSwitch
452 * table update but update callback is always registered after ownership
453 * is granted. So we are explicitly fetch the row here to get the iid.
455 OpenVSwitch openvswitchRow = getOpenVswitchTableEntry(ovsdbConnectionInstance);
456 iid = SouthboundMapper.getInstanceIdentifier(openvswitchRow);
457 LOG.info("InstanceIdentifier {} generated for device "
458 + "connection {}",iid,ovsdbConnectionInstance.getConnectionInfo());
459 ovsdbConnectionInstance.setInstanceIdentifier(iid);
461 YangInstanceIdentifier entityId = SouthboundUtil.getInstanceIdentifierCodec().getYangInstanceIdentifier(iid);
462 Entity deviceEntity = new Entity(ENTITY_TYPE, entityId);
463 LOG.debug("Entity {} created for device connection {}",
464 deviceEntity, ovsdbConnectionInstance.getConnectionInfo());
468 private OvsdbConnectionInstance getConnectionInstanceFromEntity(Entity entity) {
469 return entityConnectionMap.get(entity);
472 private void registerEntityForOwnership(OvsdbConnectionInstance ovsdbConnectionInstance) {
474 Entity candidateEntity = getEntityFromConnectionInstance(ovsdbConnectionInstance);
475 entityConnectionMap.put(candidateEntity, ovsdbConnectionInstance);
476 ovsdbConnectionInstance.setConnectedEntity(candidateEntity);
478 EntityOwnershipCandidateRegistration registration =
479 entityOwnershipService.registerCandidate(candidateEntity);
480 ovsdbConnectionInstance.setDeviceOwnershipCandidateRegistration(registration);
481 LOG.info("OVSDB entity {} is registered for ownership.", candidateEntity);
483 //If entity already has owner, it won't get notification from EntityOwnershipService
484 //so cache the connection instances.
485 Optional<EntityOwnershipState> ownershipStateOpt =
486 entityOwnershipService.getOwnershipState(candidateEntity);
487 if (ownershipStateOpt.isPresent()) {
488 EntityOwnershipState ownershipState = ownershipStateOpt.get();
489 if (ownershipState.hasOwner() && !ownershipState.isOwner()) {
490 LOG.info("OVSDB entity {} is already owned by other southbound plugin "
491 + "instance, so *this* instance is NOT an OWNER of the device",
492 ovsdbConnectionInstance.getConnectionInfo());
493 putConnectionInstance(ovsdbConnectionInstance.getMDConnectionInfo(),ovsdbConnectionInstance);
496 } catch (CandidateAlreadyRegisteredException e) {
497 LOG.warn("OVSDB entity {} was already registered for ownership", candidateEntity, e);
502 private void unregisterEntityForOwnership(OvsdbConnectionInstance ovsdbConnectionInstance) {
503 ovsdbConnectionInstance.closeDeviceOwnershipCandidateRegistration();
504 entityConnectionMap.remove(ovsdbConnectionInstance.getConnectedEntity());
507 private class OvsdbDeviceEntityOwnershipListener implements EntityOwnershipListener {
508 private OvsdbConnectionManager cm;
509 private EntityOwnershipListenerRegistration listenerRegistration;
511 OvsdbDeviceEntityOwnershipListener(OvsdbConnectionManager cm, EntityOwnershipService entityOwnershipService) {
513 listenerRegistration = entityOwnershipService.registerListener(ENTITY_TYPE, this);
515 public void close() {
516 listenerRegistration.close();
519 public void ownershipChanged(EntityOwnershipChange ownershipChange) {
520 cm.handleOwnershipChanged(ownershipChange);