*/
package org.opendaylight.controller.cluster.datastore.entityownership;
+import static org.opendaylight.controller.cluster.datastore.entityownership.EntityOwnersModel.ENTITY_OWNER_NODE_ID;
+import static org.opendaylight.controller.cluster.datastore.entityownership.EntityOwnersModel.entityPath;
+import akka.actor.ActorRef;
+import akka.dispatch.OnComplete;
+import akka.pattern.Patterns;
+import akka.util.Timeout;
+import com.google.common.annotations.VisibleForTesting;
+import com.google.common.base.Optional;
+import com.google.common.base.Preconditions;
+import com.google.common.base.Strings;
+import java.util.Collection;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+import java.util.concurrent.TimeUnit;
import org.opendaylight.controller.cluster.datastore.DistributedDataStore;
+import org.opendaylight.controller.cluster.datastore.config.Configuration;
+import org.opendaylight.controller.cluster.datastore.config.ModuleShardConfiguration;
+import org.opendaylight.controller.cluster.datastore.entityownership.messages.RegisterCandidateLocal;
+import org.opendaylight.controller.cluster.datastore.entityownership.messages.RegisterListenerLocal;
+import org.opendaylight.controller.cluster.datastore.entityownership.messages.UnregisterCandidateLocal;
+import org.opendaylight.controller.cluster.datastore.entityownership.messages.UnregisterListenerLocal;
+import org.opendaylight.controller.cluster.datastore.entityownership.selectionstrategy.EntityOwnerSelectionStrategyConfig;
+import org.opendaylight.controller.cluster.datastore.messages.CreateShard;
+import org.opendaylight.controller.cluster.datastore.messages.GetShardDataTree;
+import org.opendaylight.controller.cluster.datastore.shardstrategy.ModuleShardStrategy;
import org.opendaylight.controller.md.sal.common.api.clustering.CandidateAlreadyRegisteredException;
import org.opendaylight.controller.md.sal.common.api.clustering.Entity;
-import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipCandidate;
import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipCandidateRegistration;
import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipListener;
import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipListenerRegistration;
import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipService;
+import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipState;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.md.sal.clustering.entity.owners.rev150804.EntityOwners;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
+import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
+import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTree;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
+import scala.concurrent.Await;
+import scala.concurrent.Future;
+import scala.concurrent.duration.Duration;
/**
* The distributed implementation of the EntityOwnershipService.
*/
public class DistributedEntityOwnershipService implements EntityOwnershipService, AutoCloseable {
private static final Logger LOG = LoggerFactory.getLogger(DistributedEntityOwnershipService.class);
+ static final String ENTITY_OWNERSHIP_SHARD_NAME = "entity-ownership";
+ private static final Timeout MESSAGE_TIMEOUT = new Timeout(1, TimeUnit.MINUTES);
private final DistributedDataStore datastore;
+ private final ConcurrentMap<Entity, Entity> registeredEntities = new ConcurrentHashMap<>();
+ private volatile ActorRef localEntityOwnershipShard;
+ private volatile DataTree localEntityOwnershipShardDataTree;
public DistributedEntityOwnershipService(DistributedDataStore datastore) {
this.datastore = datastore;
}
public void start() {
- LOG.info("DistributedEntityOwnershipService starting");
+ ActorRef shardManagerActor = datastore.getActorContext().getShardManager();
+
+ Configuration configuration = datastore.getActorContext().getConfiguration();
+ Collection<String> entityOwnersMemberNames = configuration.getUniqueMemberNamesForAllShards();
+ CreateShard createShard = new CreateShard(new ModuleShardConfiguration(EntityOwners.QNAME.getNamespace(),
+ "entity-owners", ENTITY_OWNERSHIP_SHARD_NAME, ModuleShardStrategy.NAME, entityOwnersMemberNames),
+ newShardBuilder(), null);
+
+ Future<Object> createFuture = datastore.getActorContext().executeOperationAsync(shardManagerActor,
+ createShard, MESSAGE_TIMEOUT);
+
+ createFuture.onComplete(new OnComplete<Object>() {
+ @Override
+ public void onComplete(Throwable failure, Object response) {
+ if(failure != null) {
+ LOG.error("Failed to create {} shard", ENTITY_OWNERSHIP_SHARD_NAME);
+ } else {
+ LOG.info("Successfully created {} shard", ENTITY_OWNERSHIP_SHARD_NAME);
+ }
+ }
+ }, datastore.getActorContext().getClientDispatcher());
+ }
+
+ private void executeEntityOwnershipShardOperation(final ActorRef shardActor, final Object message) {
+ Future<Object> future = datastore.getActorContext().executeOperationAsync(shardActor, message, MESSAGE_TIMEOUT);
+ future.onComplete(new OnComplete<Object>() {
+ @Override
+ public void onComplete(Throwable failure, Object response) {
+ if(failure != null) {
+ LOG.debug("Error sending message {} to {}", message, shardActor, failure);
+ } else {
+ LOG.debug("{} message to {} succeeded", message, shardActor, failure);
+ }
+ }
+ }, datastore.getActorContext().getClientDispatcher());
+ }
+
+ private void executeLocalEntityOwnershipShardOperation(final Object message) {
+ if(localEntityOwnershipShard == null) {
+ Future<ActorRef> future = datastore.getActorContext().findLocalShardAsync(ENTITY_OWNERSHIP_SHARD_NAME);
+ future.onComplete(new OnComplete<ActorRef>() {
+ @Override
+ public void onComplete(Throwable failure, ActorRef shardActor) {
+ if(failure != null) {
+ LOG.error("Failed to find local {} shard", ENTITY_OWNERSHIP_SHARD_NAME, failure);
+ } else {
+ localEntityOwnershipShard = shardActor;
+ executeEntityOwnershipShardOperation(localEntityOwnershipShard, message);
+ }
+ }
+ }, datastore.getActorContext().getClientDispatcher());
+
+ } else {
+ executeEntityOwnershipShardOperation(localEntityOwnershipShard, message);
+ }
}
@Override
- public EntityOwnershipCandidateRegistration registerCandidate(Entity entity, EntityOwnershipCandidate candidate)
+ public EntityOwnershipCandidateRegistration registerCandidate(Entity entity)
throws CandidateAlreadyRegisteredException {
- // TODO Auto-generated method stub
- return null;
+ Preconditions.checkNotNull(entity, "entity cannot be null");
+
+ if(registeredEntities.putIfAbsent(entity, entity) != null) {
+ throw new CandidateAlreadyRegisteredException(entity);
+ }
+
+ RegisterCandidateLocal registerCandidate = new RegisterCandidateLocal(entity);
+
+ LOG.debug("Registering candidate with message: {}", registerCandidate);
+
+ executeLocalEntityOwnershipShardOperation(registerCandidate);
+ return new DistributedEntityOwnershipCandidateRegistration(entity, this);
+ }
+
+ void unregisterCandidate(Entity entity) {
+ LOG.debug("Unregistering candidate for {}", entity);
+
+ executeLocalEntityOwnershipShardOperation(new UnregisterCandidateLocal(entity));
+ registeredEntities.remove(entity);
+ }
+
+ @Override
+ public EntityOwnershipListenerRegistration registerListener(String entityType, EntityOwnershipListener listener) {
+ Preconditions.checkNotNull(entityType, "entityType cannot be null");
+ Preconditions.checkNotNull(listener, "listener cannot be null");
+
+ RegisterListenerLocal registerListener = new RegisterListenerLocal(listener, entityType);
+
+ LOG.debug("Registering listener with message: {}", registerListener);
+
+ executeLocalEntityOwnershipShardOperation(registerListener);
+ return new DistributedEntityOwnershipListenerRegistration(listener, entityType, this);
}
@Override
- public EntityOwnershipListenerRegistration registerListener(Entity entity, EntityOwnershipListener listener) {
- // TODO Auto-generated method stub
- return null;
+ public Optional<EntityOwnershipState> getOwnershipState(Entity forEntity) {
+ Preconditions.checkNotNull(forEntity, "forEntity cannot be null");
+
+ DataTree dataTree = getLocalEntityOwnershipShardDataTree();
+ if(dataTree == null) {
+ return Optional.absent();
+ }
+
+ Optional<NormalizedNode<?, ?>> entityNode = dataTree.takeSnapshot().readNode(
+ entityPath(forEntity.getType(), forEntity.getId()));
+ if(!entityNode.isPresent()) {
+ return Optional.absent();
+ }
+
+ String localMemberName = datastore.getActorContext().getCurrentMemberName();
+ Optional<DataContainerChild<? extends PathArgument, ?>> ownerLeaf = ((MapEntryNode)entityNode.get()).
+ getChild(ENTITY_OWNER_NODE_ID);
+ String owner = ownerLeaf.isPresent() ? ownerLeaf.get().getValue().toString() : null;
+ boolean hasOwner = !Strings.isNullOrEmpty(owner);
+ boolean isOwner = hasOwner && localMemberName.equals(owner);
+
+ return Optional.of(new EntityOwnershipState(isOwner, hasOwner));
+ }
+
+ private DataTree getLocalEntityOwnershipShardDataTree() {
+ if(localEntityOwnershipShardDataTree == null) {
+ try {
+ if(localEntityOwnershipShard == null) {
+ localEntityOwnershipShard = Await.result(datastore.getActorContext().findLocalShardAsync(
+ ENTITY_OWNERSHIP_SHARD_NAME), Duration.Inf());
+ }
+
+ localEntityOwnershipShardDataTree = (DataTree) Await.result(Patterns.ask(localEntityOwnershipShard,
+ GetShardDataTree.INSTANCE, MESSAGE_TIMEOUT), Duration.Inf());
+ } catch (Exception e) {
+ LOG.error("Failed to find local {} shard", ENTITY_OWNERSHIP_SHARD_NAME, e);
+ }
+ }
+
+ return localEntityOwnershipShardDataTree;
+ }
+
+ void unregisterListener(String entityType, EntityOwnershipListener listener) {
+ LOG.debug("Unregistering listener {} for entity type {}", listener, entityType);
+
+ executeLocalEntityOwnershipShardOperation(new UnregisterListenerLocal(listener, entityType));
}
@Override
public void close() {
}
+
+ protected EntityOwnershipShard.Builder newShardBuilder() {
+ return EntityOwnershipShard.newBuilder().localMemberName(datastore.getActorContext().getCurrentMemberName())
+ .ownerSelectionStrategyConfig(EntityOwnerSelectionStrategyConfig.newBuilder().build());
+ }
+
+ @VisibleForTesting
+ ActorRef getLocalEntityOwnershipShard() {
+ return localEntityOwnershipShard;
+ }
}
Code Review / controller.git / blobdiff