2 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.controller.md.sal.binding.impl;
10 import com.google.common.base.Objects;
11 import com.google.common.base.Optional;
13 import java.util.Collections;
14 import java.util.HashMap;
15 import java.util.HashSet;
17 import java.util.Map.Entry;
20 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
21 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
22 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
23 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
24 import org.opendaylight.controller.md.sal.dom.api.DOMDataBroker;
25 import org.opendaylight.controller.md.sal.dom.api.DOMDataChangeListener;
26 import org.opendaylight.controller.sal.binding.impl.connect.dom.BindingIndependentConnector;
27 import org.opendaylight.controller.sal.binding.impl.forward.DomForwardedBroker;
28 import org.opendaylight.controller.sal.core.api.Broker.ProviderSession;
29 import org.opendaylight.controller.sal.core.api.model.SchemaService;
30 import org.opendaylight.yangtools.concepts.AbstractListenerRegistration;
31 import org.opendaylight.yangtools.concepts.Delegator;
32 import org.opendaylight.yangtools.concepts.ListenerRegistration;
33 import org.opendaylight.yangtools.yang.binding.DataObject;
34 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
35 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
36 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
37 import org.opendaylight.yangtools.yang.data.impl.codec.DeserializationException;
38 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
39 import org.opendaylight.yangtools.yang.model.api.SchemaContextListener;
40 import org.slf4j.Logger;
41 import org.slf4j.LoggerFactory;
43 public abstract class AbstractForwardedDataBroker implements Delegator<DOMDataBroker>, DomForwardedBroker,
44 SchemaContextListener, AutoCloseable {
46 private static final Logger LOG = LoggerFactory.getLogger(AbstractForwardedDataBroker.class);
47 // The Broker to whom we do all forwarding
48 private final DOMDataBroker domDataBroker;
50 private final BindingToNormalizedNodeCodec codec;
51 private BindingIndependentConnector connector;
52 private ProviderSession context;
53 private final ListenerRegistration<SchemaContextListener> schemaListenerRegistration;
55 protected AbstractForwardedDataBroker(final DOMDataBroker domDataBroker, final BindingToNormalizedNodeCodec codec,
56 final SchemaService schemaService) {
57 this.domDataBroker = domDataBroker;
59 this.schemaListenerRegistration = schemaService.registerSchemaContextListener(this);
62 protected BindingToNormalizedNodeCodec getCodec() {
67 public DOMDataBroker getDelegate() {
72 public void onGlobalContextUpdated(final SchemaContext ctx) {
76 public ListenerRegistration<DataChangeListener> registerDataChangeListener(final LogicalDatastoreType store,
77 final InstanceIdentifier<?> path, final DataChangeListener listener, final DataChangeScope triggeringScope) {
78 DOMDataChangeListener domDataChangeListener = new TranslatingDataChangeInvoker(store, path, listener,
80 YangInstanceIdentifier domPath = codec.toNormalized(path);
81 ListenerRegistration<DOMDataChangeListener> domRegistration = domDataBroker.registerDataChangeListener(store,
82 domPath, domDataChangeListener, triggeringScope);
83 return new ListenerRegistrationImpl(listener, domRegistration);
86 protected Map<InstanceIdentifier<?>, DataObject> toBinding(final InstanceIdentifier<?> path,
87 final Map<YangInstanceIdentifier, ? extends NormalizedNode<?, ?>> normalized) {
88 Map<InstanceIdentifier<?>, DataObject> newMap = new HashMap<>();
90 for (Map.Entry<YangInstanceIdentifier, ? extends NormalizedNode<?, ?>> entry : normalized.entrySet()) {
92 Optional<Entry<InstanceIdentifier<? extends DataObject>, DataObject>> potential = getCodec().toBinding(entry);
93 if (potential.isPresent()) {
94 Entry<InstanceIdentifier<? extends DataObject>, DataObject> binding = potential.get();
95 newMap.put(binding.getKey(), binding.getValue());
97 } catch (DeserializationException e) {
98 LOG.warn("Failed to transform {}, omitting it", entry, e);
104 protected Set<InstanceIdentifier<?>> toBinding(final InstanceIdentifier<?> path,
105 final Set<YangInstanceIdentifier> normalized) {
106 Set<InstanceIdentifier<?>> hashSet = new HashSet<>();
107 for (YangInstanceIdentifier normalizedPath : normalized) {
109 Optional<InstanceIdentifier<? extends DataObject>> potential = getCodec().toBinding(normalizedPath);
110 if (potential.isPresent()) {
111 InstanceIdentifier<? extends DataObject> binding = potential.get();
112 hashSet.add(binding);
113 } else if (normalizedPath.getLastPathArgument() instanceof YangInstanceIdentifier.AugmentationIdentifier) {
116 } catch (DeserializationException e) {
117 LOG.warn("Failed to transform {}, omitting it", normalizedPath, e);
123 protected Optional<DataObject> toBindingData(final InstanceIdentifier<?> path, final NormalizedNode<?, ?> data) {
124 if (path.isWildcarded()) {
125 return Optional.absent();
127 return (Optional) getCodec().deserializeFunction(path).apply(Optional.<NormalizedNode<?, ?>> of(data));
130 private class TranslatingDataChangeInvoker implements DOMDataChangeListener {
131 private final DataChangeListener bindingDataChangeListener;
132 private final LogicalDatastoreType store;
133 private final InstanceIdentifier<?> path;
134 private final DataChangeScope triggeringScope;
136 public TranslatingDataChangeInvoker(final LogicalDatastoreType store, final InstanceIdentifier<?> path,
137 final DataChangeListener bindingDataChangeListener, final DataChangeScope triggeringScope) {
140 this.bindingDataChangeListener = bindingDataChangeListener;
141 this.triggeringScope = triggeringScope;
145 public void onDataChanged(final AsyncDataChangeEvent<YangInstanceIdentifier, NormalizedNode<?, ?>> change) {
146 bindingDataChangeListener.onDataChanged(new TranslatedDataChangeEvent(change, path));
150 private class TranslatedDataChangeEvent implements AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> {
151 private final AsyncDataChangeEvent<YangInstanceIdentifier, NormalizedNode<?, ?>> domEvent;
152 private final InstanceIdentifier<?> path;
154 private Map<InstanceIdentifier<?>, DataObject> createdCache;
155 private Map<InstanceIdentifier<?>, DataObject> updatedCache;
156 private Map<InstanceIdentifier<?>, DataObject> originalCache;
157 private Set<InstanceIdentifier<?>> removedCache;
158 private Optional<DataObject> originalDataCache;
159 private Optional<DataObject> updatedDataCache;
161 public TranslatedDataChangeEvent(
162 final AsyncDataChangeEvent<YangInstanceIdentifier, NormalizedNode<?, ?>> change,
163 final InstanceIdentifier<?> path) {
164 this.domEvent = change;
169 public Map<InstanceIdentifier<?>, DataObject> getCreatedData() {
170 if (createdCache == null) {
171 createdCache = Collections.unmodifiableMap(toBinding(path, domEvent.getCreatedData()));
177 public Map<InstanceIdentifier<?>, DataObject> getUpdatedData() {
178 if (updatedCache == null) {
179 updatedCache = Collections.unmodifiableMap(toBinding(path, domEvent.getUpdatedData()));
186 public Set<InstanceIdentifier<?>> getRemovedPaths() {
187 if (removedCache == null) {
188 removedCache = Collections.unmodifiableSet(toBinding(path, domEvent.getRemovedPaths()));
194 public Map<InstanceIdentifier<?>, DataObject> getOriginalData() {
195 if (originalCache == null) {
196 originalCache = Collections.unmodifiableMap(toBinding(path, domEvent.getOriginalData()));
198 return originalCache;
203 public DataObject getOriginalSubtree() {
204 if (originalDataCache == null) {
205 if (domEvent.getOriginalSubtree() != null) {
206 originalDataCache = toBindingData(path, domEvent.getOriginalSubtree());
208 originalDataCache = Optional.absent();
211 return originalDataCache.orNull();
215 public DataObject getUpdatedSubtree() {
216 if (updatedDataCache == null) {
217 if (domEvent.getUpdatedSubtree() != null) {
218 updatedDataCache = toBindingData(path, domEvent.getUpdatedSubtree());
220 updatedDataCache = Optional.absent();
223 return updatedDataCache.orNull();
227 public String toString() {
228 return Objects.toStringHelper(TranslatedDataChangeEvent.class) //
229 .add("created", getCreatedData()) //
230 .add("updated", getUpdatedData()) //
231 .add("removed", getRemovedPaths()) //
232 .add("dom", domEvent) //
237 private static class ListenerRegistrationImpl extends AbstractListenerRegistration<DataChangeListener> {
238 private final ListenerRegistration<DOMDataChangeListener> registration;
240 public ListenerRegistrationImpl(final DataChangeListener listener,
241 final ListenerRegistration<DOMDataChangeListener> registration) {
243 this.registration = registration;
247 protected void removeRegistration() {
248 registration.close();
253 public BindingIndependentConnector getConnector() {
254 return this.connector;
258 public ProviderSession getDomProviderContext() {
263 public void setConnector(final BindingIndependentConnector connector) {
264 this.connector = connector;
268 public void setDomProviderContext(final ProviderSession domProviderContext) {
269 this.context = domProviderContext;
273 public void startForwarding() {
278 public void close() throws Exception {
279 this.schemaListenerRegistration.close();