import akka.actor.ActorRef;
import akka.dispatch.OnComplete;
import akka.util.Timeout;
+import com.google.common.annotations.VisibleForTesting;
+import com.google.common.base.Preconditions;
+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.messages.CreateShard;
+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.EntityOwnershipListener;
import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipListenerRegistration;
import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipService;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.md.sal.clustering.entity.owners.rev150804.EntityOwners;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import scala.concurrent.Future;
private static final Timeout MESSAGE_TIMEOUT = new Timeout(1, TimeUnit.MINUTES);
private final DistributedDataStore datastore;
+ private final ConcurrentMap<Entity, EntityOwnershipCandidate> registeredEntities = new ConcurrentHashMap<>();
+ private volatile ActorRef localEntityOwnershipShard;
public DistributedEntityOwnershipService(DistributedDataStore datastore) {
this.datastore = datastore;
public void start() {
ActorRef shardManagerActor = datastore.getActorContext().getShardManager();
- CreateShard createShard = new CreateShard(ENTITY_OWNERSHIP_SHARD_NAME,
- datastore.getActorContext().getConfiguration().getUniqueMemberNamesForAllShards(),
- new EntityOwnershipShardPropsCreator(), null);
+ 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),
+ newShardPropsCreator(), null);
Future<Object> createFuture = datastore.getActorContext().executeOperationAsync(shardManagerActor,
createShard, MESSAGE_TIMEOUT);
}, 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)
throws CandidateAlreadyRegisteredException {
- // TODO Auto-generated method stub
- return null;
+ Preconditions.checkNotNull(entity, "entity cannot be null");
+ Preconditions.checkNotNull(candidate, "candidate cannot be null");
+
+ EntityOwnershipCandidate currentCandidate = registeredEntities.putIfAbsent(entity, candidate);
+ if(currentCandidate != null) {
+ throw new CandidateAlreadyRegisteredException(entity, currentCandidate);
+ }
+
+ RegisterCandidateLocal registerCandidate = new RegisterCandidateLocal(candidate, entity);
+
+ LOG.debug("Registering candidate with message: {}", registerCandidate);
+
+ executeLocalEntityOwnershipShardOperation(registerCandidate);
+ return new DistributedEntityOwnershipCandidateRegistration(candidate, entity, this);
+ }
+
+ void unregisterCandidate(Entity entity, EntityOwnershipCandidate entityOwnershipCandidate) {
+ LOG.debug("Unregistering candidate {} for {}", entityOwnershipCandidate, entity);
+
+ executeLocalEntityOwnershipShardOperation(new UnregisterCandidateLocal(entityOwnershipCandidate, entity));
+ registeredEntities.remove(entity);
}
@Override
- public EntityOwnershipListenerRegistration registerListener(Entity entity, EntityOwnershipListener listener) {
- // TODO Auto-generated method stub
- return null;
+ 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);
+ }
+
+ 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 EntityOwnershipShardPropsCreator newShardPropsCreator() {
+ return new EntityOwnershipShardPropsCreator(datastore.getActorContext().getCurrentMemberName());
+ }
+
+ @VisibleForTesting
+ ActorRef getLocalEntityOwnershipShard() {
+ return localEntityOwnershipShard;
+ }
}