+/**
+ * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.controller.sal.compatibility;
+
+import java.util.Collections;
+import java.util.Map;
+import java.util.Set;
+
+import org.opendaylight.controller.md.sal.binding.api.DataBroker;
+import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
+import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
+import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
+import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.yangtools.concepts.ListenerRegistration;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.common.base.Optional;
+import com.google.common.base.Preconditions;
+
+public abstract class AbstractDataChangeListener <T extends DataObject> implements AutoCloseable,DataChangeListener{
+
+ private static final Logger LOG = LoggerFactory.getLogger(AbstractDataChangeListener.class);
+ protected InventoryAndReadAdapter adapter;
+ protected final Class<T> clazz;
+ protected ListenerRegistration<DataChangeListener> listenerRegistration;
+
+ public AbstractDataChangeListener(final InventoryAndReadAdapter adapter, DataBroker db, final Class<T> clazz) {
+ this.adapter = Preconditions.checkNotNull(adapter, "InventoryAndReadAdapter can not be null!");
+ this.clazz = Preconditions.checkNotNull(clazz, "Class can not be null!");
+ Preconditions.checkNotNull(db, "DataBroker can not be null!");
+ registrationListener(db, 5);
+ }
+
+ @Override
+ public void onDataChanged(AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> changeEvent) {
+ Preconditions.checkNotNull(changeEvent,"Async ChangeEvent can not be null!");
+ /* All DataObjects for create */
+ final Map<InstanceIdentifier<?>, DataObject> createdData = changeEvent.getCreatedData() != null
+ ? changeEvent.getCreatedData() : Collections.<InstanceIdentifier<?>, DataObject> emptyMap();
+ /* All DataObjects for remove */
+ final Set<InstanceIdentifier<?>> removeData = changeEvent.getRemovedPaths() != null
+ ? changeEvent.getRemovedPaths() : Collections.<InstanceIdentifier<?>> emptySet();
+ /* All DataObjects for updates */
+ final Map<InstanceIdentifier<?>, DataObject> updateData = changeEvent.getUpdatedData() != null
+ ? changeEvent.getUpdatedData() : Collections.<InstanceIdentifier<?>, DataObject> emptyMap();
+ /* All Original DataObjects */
+ final Map<InstanceIdentifier<?>, DataObject> originalData = changeEvent.getOriginalData() != null
+ ? changeEvent.getOriginalData() : Collections.<InstanceIdentifier<?>, DataObject> emptyMap();
+ this.createData(createdData);
+ this.updateData(updateData, originalData);
+ this.removeData(removeData, originalData);
+ }
+
+ @SuppressWarnings("unchecked")
+ private void createData(final Map<InstanceIdentifier<?>, DataObject> createdData) {
+ final Set<InstanceIdentifier<?>> keys = createdData.keySet() != null
+ ? createdData.keySet() : Collections.<InstanceIdentifier<?>> emptySet();
+ for (InstanceIdentifier<?> key : keys) {
+ if (clazz.equals(key.getTargetType())) {
+ InstanceIdentifier<T> createKeyIdent = key.firstIdentifierOf(clazz);
+ final Optional<DataObject> value = Optional.of(createdData.get(key));
+ if (value.isPresent()) {
+ this.add(createKeyIdent, (T)value.get());
+ }
+ }
+ }
+ }
+
+ abstract protected void add(InstanceIdentifier<T> createKeyIdent, T node);
+
+ @SuppressWarnings("unchecked")
+ private void updateData(final Map<InstanceIdentifier<?>, DataObject> updateData, final Map<InstanceIdentifier<?>, DataObject> originalData) {
+
+ final Set<InstanceIdentifier<?>> keys = updateData.keySet() != null
+ ? updateData.keySet() : Collections.<InstanceIdentifier<?>> emptySet();
+ for (InstanceIdentifier<?> key : keys) {
+ if (clazz.equals(key.getTargetType())) {
+ InstanceIdentifier<T> updateKeyIdent = key.firstIdentifierOf(clazz);
+ final Optional<DataObject> value = Optional.of(updateData.get(key));
+ final Optional<DataObject> original = Optional.of(originalData.get(key));
+ if (value.isPresent() && original.isPresent()) {
+ this.update(updateKeyIdent, (T)original.get(), (T)value.get());
+ }
+ }
+ }
+ }
+
+ abstract protected void update(InstanceIdentifier<T> updateKeyIdent, T node,
+ T node2);
+
+ @SuppressWarnings("unchecked")
+ private void removeData(final Set<InstanceIdentifier<?>> removeData, final Map<InstanceIdentifier<?>, DataObject> originalData) {
+
+ for (InstanceIdentifier<?> key : removeData) {
+ if (clazz.equals(key.getTargetType())) {
+ final InstanceIdentifier<T> ident = key.firstIdentifierOf(clazz);
+ final DataObject removeValue = originalData.get(key);
+ this.remove(ident, (T)removeValue);
+ }
+ }
+ }
+
+ abstract protected void remove(InstanceIdentifier<T> ident, T removeValue);
+
+ protected void registrationListener(final DataBroker db, int i) {
+ try {
+ listenerRegistration = db.registerDataChangeListener(LogicalDatastoreType.OPERATIONAL,
+ getWildCardPath(), this, DataChangeScope.BASE);
+ } catch (final Exception e) {
+ if (i >= 1) {
+ try {
+ Thread.sleep(100);
+ } catch (InterruptedException e1) {
+ LOG.error("Thread interrupted '{}'", e1);
+ Thread.currentThread().interrupt();
+ }
+ registrationListener(db, --i);
+ } else {
+ LOG.error("AbstractDataChangeListener registration fail!", e);
+ throw new IllegalStateException("AbstractDataChangeListener registration Listener fail! System needs restart.", e);
+ }
+ }
+ }
+
+ protected abstract InstanceIdentifier<?> getWildCardPath();
+
+ @Override
+ public void close() {
+ if (listenerRegistration != null) {
+ try {
+ listenerRegistration.close();
+ } catch (final Exception e) {
+ LOG.error("Error by stop AbstractDataChangeListener.", e);
+ }
+ listenerRegistration = null;
+ }
+ }
+}
\ No newline at end of file
Code Review / controller.git / commitdiff