Simplify code using Java 8 features

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

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/DefaultShardDataTreeChangeListenerPublisher.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/DefaultShardDataTreeChangeListenerPublisher.java
index a63859e9e695516488129a496319d1070e9b3804..b71174d0b3efbb007810c58b5c3a5df1cce6b234 100644 (file)
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/DefaultShardDataTreeChangeListenerPublisher.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/DefaultShardDataTreeChangeListenerPublisher.java
@@ -7,7 +7,9 @@
  */
 package org.opendaylight.controller.cluster.datastore;
 
+import com.google.common.base.Optional;
 import java.util.Collection;
+import java.util.function.Consumer;
 import javax.annotation.concurrent.NotThreadSafe;
 import org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener;
 import org.opendaylight.mdsal.dom.spi.AbstractDOMDataTreeChangeListenerRegistration;
@@ -28,20 +30,27 @@ import org.slf4j.LoggerFactory;
 final class DefaultShardDataTreeChangeListenerPublisher extends AbstractDOMStoreTreeChangePublisher
         implements ShardDataTreeChangeListenerPublisher {
     private static final Logger LOG = LoggerFactory.getLogger(DefaultShardDataTreeChangeListenerPublisher.class);
+    private String logContext;
 
-    @Override
-    public void publishChanges(final DataTreeCandidate candidate, String logContext) {
-        processCandidateTree(candidate);
+    DefaultShardDataTreeChangeListenerPublisher(String logContext) {
+        this.logContext = logContext;
     }
 
     @Override
-    public ShardDataTreeChangeListenerPublisher newInstance() {
-        return new DefaultShardDataTreeChangeListenerPublisher();
+    public void publishChanges(final DataTreeCandidate candidate) {
+        if (LOG.isTraceEnabled()) {
+            LOG.trace("{}: publishChanges: {}", logContext, candidate);
+        } else {
+            LOG.debug("{}: publishChanges: rootPath: {}", logContext, candidate.getRootPath());
+        }
+
+        processCandidateTree(candidate);
     }
 
     @Override
     protected void notifyListener(AbstractDOMDataTreeChangeListenerRegistration<?> registration,
             Collection<DataTreeCandidate> changes) {
+        LOG.debug("{}: notifyListener: listener: {}", logContext, registration.getInstance());
         registration.getInstance().onDataTreeChanged(changes);
     }
 
@@ -51,18 +60,28 @@ final class DefaultShardDataTreeChangeListenerPublisher extends AbstractDOMStore
     }
 
     @Override
-    public <L extends org.opendaylight.controller.md.sal.dom.api.DOMDataTreeChangeListener> ListenerRegistration<L>
-            registerTreeChangeListener(final YangInstanceIdentifier treeId, final L listener) {
-        final AbstractDOMDataTreeChangeListenerRegistration<DOMDataTreeChangeListener> registration =
-            super.registerTreeChangeListener(treeId, (org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener)
-                changes -> listener.onDataTreeChanged(changes));
+    public void registerTreeChangeListener(YangInstanceIdentifier treeId, DOMDataTreeChangeListener listener,
+            Optional<DataTreeCandidate> initialState,
+            Consumer<ListenerRegistration<DOMDataTreeChangeListener>> onRegistration) {
+        LOG.debug("{}: registerTreeChangeListener: path: {}, listener: {}", logContext, treeId, listener);
+
+        AbstractDOMDataTreeChangeListenerRegistration<DOMDataTreeChangeListener> registration =
+                super.registerTreeChangeListener(treeId, listener);
+
+        onRegistration.accept(registration);
+
+        if (initialState.isPresent()) {
+            notifySingleListener(treeId, listener, initialState.get(), logContext);
+        }
+    }
 
-        return new org.opendaylight.controller.md.sal.dom.spi.AbstractDOMDataTreeChangeListenerRegistration<L>(
-                listener) {
-            @Override
-            protected void removeRegistration() {
-                registration.close();
-            }
-        };
+    static void notifySingleListener(YangInstanceIdentifier treeId, DOMDataTreeChangeListener listener,
+            DataTreeCandidate state, String logContext) {
+        LOG.debug("{}: notifySingleListener: path: {}, listener: {}", logContext, treeId, listener);
+        DefaultShardDataTreeChangeListenerPublisher publisher =
+                new DefaultShardDataTreeChangeListenerPublisher(logContext);
+        publisher.logContext = logContext;
+        publisher.registerTreeChangeListener(treeId, listener, Optional.absent(), noop -> { /* NOOP */ });
+        publisher.publishChanges(state);
     }
 }