/*
* Copyright (c) 2015 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.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.controller.md.sal.dom.api.DOMDataTreeChangeListener;
import org.opendaylight.mdsal.dom.spi.AbstractDOMDataTreeChangeListenerRegistration;
import org.opendaylight.mdsal.dom.spi.store.AbstractDOMStoreTreeChangePublisher;
import org.opendaylight.yangtools.concepts.ListenerRegistration;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Default implementation of ShardDataTreeChangeListenerPublisher that directly generates and publishes
* notifications for DataTreeChangeListeners.
*
* @author Thomas Pantelis
*/
@NotThreadSafe
final class DefaultShardDataTreeChangeListenerPublisher extends AbstractDOMStoreTreeChangePublisher
implements ShardDataTreeChangeListenerPublisher {
private static final Logger LOG = LoggerFactory.getLogger(DefaultShardDataTreeChangeListenerPublisher.class);
private String logContext;
DefaultShardDataTreeChangeListenerPublisher(String logContext) {
this.logContext = logContext;
}
@Override
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);
}
@Override
protected void registrationRemoved(final AbstractDOMDataTreeChangeListenerRegistration<?> registration) {
LOG.debug("Registration {} removed", registration);
}
@Override
public void registerTreeChangeListener(YangInstanceIdentifier treeId, DOMDataTreeChangeListener listener,
Optional<DataTreeCandidate> initialState,
Consumer<ListenerRegistration<DOMDataTreeChangeListener>> onRegistration) {
LOG.debug("{}: registerTreeChangeListener: path: {}, listener: {}", logContext, treeId, listener);
AbstractDOMDataTreeChangeListenerRegistration<org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener>
registration = super.registerTreeChangeListener(treeId, new ForwardingDOMDataTreeChangeListener(listener));
onRegistration.accept(
new org.opendaylight.controller.md.sal.dom.spi.AbstractDOMDataTreeChangeListenerRegistration<
DOMDataTreeChangeListener>(listener) {
@Override
protected void removeRegistration() {
registration.close();
}
});
if (initialState.isPresent()) {
notifySingleListener(treeId, listener, initialState.get(), logContext);
}
}
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 -> { });
publisher.publishChanges(state);
}
private static class ForwardingDOMDataTreeChangeListener
implements org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener {
final DOMDataTreeChangeListener delegate;
ForwardingDOMDataTreeChangeListener(DOMDataTreeChangeListener delegate) {
this.delegate = delegate;
}
@Override
public void onDataTreeChanged(Collection<DataTreeCandidate> changes) {
delegate.onDataTreeChanged(changes);
}
@Override
public String toString() {
return delegate.toString();
}
}
}