Use singleton NodeIdentifierWithPredicates

[controller.git] / opendaylight / md-sal / sal-distributed-datastore / src / main / java / org / opendaylight / controller / cluster / datastore / entityownership / EntityOwnerChangeListener.java

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/entityownership/EntityOwnerChangeListener.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/entityownership/EntityOwnerChangeListener.java
index cf9df1821a93bab26787e10941c42e870888b17f..38dbae3865fca68afa2cec03424157027c6c4ac9 100644 (file)
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/entityownership/EntityOwnerChangeListener.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/entityownership/EntityOwnerChangeListener.java
@@ -7,17 +7,16 @@
  */
 package org.opendaylight.controller.cluster.datastore.entityownership;
 
-import static org.opendaylight.controller.cluster.datastore.entityownership.EntityOwnersModel.ENTITY_OWNERS_PATH;
-import static org.opendaylight.controller.cluster.datastore.entityownership.EntityOwnersModel.ENTITY_QNAME;
+import static com.google.common.base.Verify.verifyNotNull;
+import static java.util.Objects.requireNonNull;
 import static org.opendaylight.controller.cluster.datastore.entityownership.EntityOwnersModel.createEntity;
-import com.google.common.base.Objects;
-import com.google.common.base.Optional;
+
+import com.google.common.base.Strings;
 import java.util.Collection;
-import org.opendaylight.controller.cluster.datastore.ShardDataTree;
-import org.opendaylight.controller.md.sal.common.api.clustering.Entity;
-import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeChangeListener;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.md.sal.clustering.entity.owners.rev150804.entity.owners.EntityType;
-import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import java.util.Objects;
+import java.util.Optional;
+import org.opendaylight.controller.cluster.access.concepts.MemberName;
+import org.opendaylight.mdsal.eos.dom.api.DOMEntity;
 import org.opendaylight.yangtools.yang.data.api.schema.LeafNode;
 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
@@ -30,61 +29,53 @@ import org.slf4j.LoggerFactory;
  *
  * @author Thomas Pantelis
  */
-class EntityOwnerChangeListener implements DOMDataTreeChangeListener {
+class EntityOwnerChangeListener extends AbstractEntityOwnerChangeListener {
     private static final Logger LOG = LoggerFactory.getLogger(EntityOwnerChangeListener.class);
 
     private final String localMemberName;
-    private final EntityOwnershipListenerSupport listenerSupport;
-
-    EntityOwnerChangeListener(String localMemberName, EntityOwnershipListenerSupport listenerSupport) {
-        this.localMemberName = localMemberName;
-        this.listenerSupport = listenerSupport;
-    }
+    private final EntityOwnershipChangePublisher publisher;
 
-    void init(ShardDataTree shardDataTree) {
-        shardDataTree.registerTreeChangeListener(YangInstanceIdentifier.builder(ENTITY_OWNERS_PATH).
-                node(EntityType.QNAME).node(EntityType.QNAME).node(ENTITY_QNAME).node(ENTITY_QNAME).node(EntityOwnersModel.ENTITY_OWNER_QNAME).build(), this);
+    EntityOwnerChangeListener(final MemberName localMemberName, final EntityOwnershipChangePublisher publisher) {
+        this.localMemberName = verifyNotNull(localMemberName.getName());
+        this.publisher = requireNonNull(publisher);
     }
 
     @Override
-    public void onDataTreeChanged(Collection<DataTreeCandidate> changes) {
-        for(DataTreeCandidate change: changes) {
+    public void onDataTreeChanged(final Collection<DataTreeCandidate> changes) {
+        for (DataTreeCandidate change: changes) {
             DataTreeCandidateNode changeRoot = change.getRootNode();
             LeafNode<?> ownerLeaf = (LeafNode<?>) changeRoot.getDataAfter().get();
 
-            LOG.debug("{}: Entity node changed: {}, {}", logId(), changeRoot.getModificationType(), change.getRootPath());
+            LOG.debug("{}: Entity node changed: {}, {}", logId(), changeRoot.getModificationType(),
+                    change.getRootPath());
 
             String newOwner = extractOwner(ownerLeaf);
 
             String origOwner = null;
             Optional<NormalizedNode<?, ?>> dataBefore = changeRoot.getDataBefore();
-            if(dataBefore.isPresent()) {
+            if (dataBefore.isPresent()) {
                 origOwner = extractOwner((LeafNode<?>) changeRoot.getDataBefore().get());
             }
 
             LOG.debug("{}: New owner: {}, Original owner: {}", logId(), newOwner, origOwner);
 
-            if(!Objects.equal(origOwner, newOwner)) {
-                boolean isOwner = Objects.equal(localMemberName, newOwner);
-                boolean wasOwner = Objects.equal(localMemberName, origOwner);
-                if(isOwner || wasOwner) {
-                    Entity entity = createEntity(change.getRootPath());
+            if (!Objects.equals(origOwner, newOwner)) {
+                boolean isOwner = localMemberName.equals(newOwner);
+                boolean wasOwner = localMemberName.equals(origOwner);
+                boolean hasOwner = !Strings.isNullOrEmpty(newOwner);
 
-                    LOG.debug("{}: Calling notifyEntityOwnershipListeners: entity: {}, wasOwner: {}, isOwner: {}",
-                            logId(), entity, wasOwner, isOwner);
+                DOMEntity entity = createEntity(change.getRootPath());
 
-                    listenerSupport.notifyEntityOwnershipListeners(entity, wasOwner, isOwner);
-                }
+                LOG.debug(
+                    "{}: Calling notifyEntityOwnershipListeners: entity: {}, wasOwner: {}, isOwner: {}, hasOwner: {}",
+                    logId(), entity, wasOwner, isOwner, hasOwner);
+
+                publisher.notifyEntityOwnershipListeners(entity, wasOwner, isOwner, hasOwner);
             }
         }
     }
 
-    private String extractOwner(LeafNode<?> ownerLeaf) {
-        Object value = ownerLeaf.getValue();
-        return value != null ? value.toString() : null;
-    }
-
     private String logId() {
-        return listenerSupport.getLogId();
+        return publisher.getLogId();
     }
 }