- 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));
-
- return new org.opendaylight.controller.md.sal.dom.spi.AbstractDOMDataTreeChangeListenerRegistration<L>(
- listener) {
- @Override
- protected void removeRegistration() {
- registration.close();
- }
- };
+ 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();
+ }