2 * Copyright (c) 2016 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.restconf.nb.rfc8040.rests.utils;
10 import static org.opendaylight.restconf.nb.rfc8040.utils.parser.ParserFieldsParameter.parseFieldsParameter;
11 import static org.opendaylight.restconf.nb.rfc8040.utils.parser.ParserFieldsParameter.parseFieldsPaths;
13 import com.google.common.annotations.VisibleForTesting;
14 import com.google.common.primitives.Ints;
15 import com.google.common.util.concurrent.ListenableFuture;
16 import java.util.Collection;
17 import java.util.List;
19 import java.util.Optional;
21 import java.util.function.Function;
22 import java.util.stream.Collectors;
23 import javax.ws.rs.core.MultivaluedMap;
24 import javax.ws.rs.core.UriInfo;
25 import org.eclipse.jdt.annotation.NonNull;
26 import org.eclipse.jdt.annotation.Nullable;
27 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
28 import org.opendaylight.mdsal.dom.api.DOMTransactionChain;
29 import org.opendaylight.restconf.common.context.InstanceIdentifierContext;
30 import org.opendaylight.restconf.common.context.WriterParameters;
31 import org.opendaylight.restconf.common.context.WriterParameters.WriterParametersBuilder;
32 import org.opendaylight.restconf.common.errors.RestconfDocumentedException;
33 import org.opendaylight.restconf.common.errors.RestconfError;
34 import org.opendaylight.restconf.nb.rfc8040.rests.transactions.RestconfStrategy;
35 import org.opendaylight.restconf.nb.rfc8040.rests.utils.RestconfDataServiceConstant.ReadData.WithDefaults;
36 import org.opendaylight.yangtools.yang.common.ErrorTag;
37 import org.opendaylight.yangtools.yang.common.ErrorType;
38 import org.opendaylight.yangtools.yang.common.QName;
39 import org.opendaylight.yangtools.yang.common.QNameModule;
40 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
41 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.AugmentationIdentifier;
42 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
43 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
44 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
45 import org.opendaylight.yangtools.yang.data.api.schema.AugmentationNode;
46 import org.opendaylight.yangtools.yang.data.api.schema.ChoiceNode;
47 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
48 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
49 import org.opendaylight.yangtools.yang.data.api.schema.LeafNode;
50 import org.opendaylight.yangtools.yang.data.api.schema.LeafSetEntryNode;
51 import org.opendaylight.yangtools.yang.data.api.schema.LeafSetNode;
52 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
53 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
54 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
55 import org.opendaylight.yangtools.yang.data.api.schema.SystemLeafSetNode;
56 import org.opendaylight.yangtools.yang.data.api.schema.SystemMapNode;
57 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListEntryNode;
58 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListNode;
59 import org.opendaylight.yangtools.yang.data.api.schema.UserLeafSetNode;
60 import org.opendaylight.yangtools.yang.data.api.schema.UserMapNode;
61 import org.opendaylight.yangtools.yang.data.api.schema.builder.CollectionNodeBuilder;
62 import org.opendaylight.yangtools.yang.data.api.schema.builder.DataContainerNodeBuilder;
63 import org.opendaylight.yangtools.yang.data.api.schema.builder.ListNodeBuilder;
64 import org.opendaylight.yangtools.yang.data.api.schema.builder.NormalizedNodeBuilder;
65 import org.opendaylight.yangtools.yang.data.api.schema.builder.NormalizedNodeContainerBuilder;
66 import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
67 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
68 import org.opendaylight.yangtools.yang.data.impl.schema.SchemaAwareBuilders;
69 import org.opendaylight.yangtools.yang.data.util.DataSchemaContextTree;
70 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
71 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
72 import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
73 import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
74 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
75 import org.opendaylight.yangtools.yang.model.api.RpcDefinition;
78 * Util class for read data from data store via transaction.
82 * <li>all (config + state)
85 public final class ReadDataTransactionUtil {
86 private static final Set<String> ALLOWED_PARAMETERS = Set.of(
87 RestconfDataServiceConstant.ReadData.CONTENT,
88 RestconfDataServiceConstant.ReadData.DEPTH,
89 RestconfDataServiceConstant.ReadData.FIELDS,
90 RestconfDataServiceConstant.ReadData.WITH_DEFAULTS);
91 private static final List<String> DEFAULT_CONTENT = List.of(RestconfDataServiceConstant.ReadData.ALL);
92 private static final List<String> DEFAULT_DEPTH = List.of(RestconfDataServiceConstant.ReadData.UNBOUNDED);
93 private static final String READ_TYPE_TX = "READ";
95 private ReadDataTransactionUtil() {
100 * Parse parameters from URI request and check their types and values.
102 * @param identifier {@link InstanceIdentifierContext}
103 * @param uriInfo URI info
104 * @return {@link WriterParameters}
106 public static WriterParameters parseUriParameters(final InstanceIdentifierContext<?> identifier,
107 final UriInfo uriInfo) {
108 final WriterParametersBuilder builder = new WriterParametersBuilder();
109 if (uriInfo == null) {
110 return builder.build();
113 // check only allowed parameters
114 final MultivaluedMap<String, String> queryParams = uriInfo.getQueryParameters();
115 checkParametersTypes(queryParams.keySet(), ALLOWED_PARAMETERS);
117 // read parameters from URI or set default values
118 final List<String> content = queryParams.getOrDefault(
119 RestconfDataServiceConstant.ReadData.CONTENT, DEFAULT_CONTENT);
120 final List<String> depth = queryParams.getOrDefault(
121 RestconfDataServiceConstant.ReadData.DEPTH, DEFAULT_DEPTH);
122 final List<String> withDefaults = queryParams.getOrDefault(
123 RestconfDataServiceConstant.ReadData.WITH_DEFAULTS, List.of());
125 final List<String> fields = queryParams.getOrDefault(RestconfDataServiceConstant.ReadData.FIELDS, List.of());
127 // parameter can be in URI at most once
128 checkParameterCount(content, RestconfDataServiceConstant.ReadData.CONTENT);
129 checkParameterCount(depth, RestconfDataServiceConstant.ReadData.DEPTH);
130 checkParameterCount(fields, RestconfDataServiceConstant.ReadData.FIELDS);
131 checkParameterCount(withDefaults, RestconfDataServiceConstant.ReadData.WITH_DEFAULTS);
133 // check and set content
134 final String contentValue = content.get(0);
135 switch (contentValue) {
136 case RestconfDataServiceConstant.ReadData.ALL:
137 case RestconfDataServiceConstant.ReadData.CONFIG:
138 case RestconfDataServiceConstant.ReadData.NONCONFIG:
139 // FIXME: we really want to have a proper enumeration for this field
140 builder.setContent(contentValue);
143 throw new RestconfDocumentedException(
144 new RestconfError(ErrorType.PROTOCOL, ErrorTag.INVALID_VALUE,
145 "Invalid content parameter: " + contentValue, null,
146 "The content parameter value must be either config, nonconfig or all (default)"));
149 // check and set depth
150 if (!depth.get(0).equals(RestconfDataServiceConstant.ReadData.UNBOUNDED)) {
151 final Integer value = Ints.tryParse(depth.get(0));
153 if (value == null || value < RestconfDataServiceConstant.ReadData.MIN_DEPTH
154 || value > RestconfDataServiceConstant.ReadData.MAX_DEPTH) {
155 throw new RestconfDocumentedException(
156 new RestconfError(ErrorType.PROTOCOL, ErrorTag.INVALID_VALUE,
157 "Invalid depth parameter: " + depth, null,
158 "The depth parameter must be an integer between 1 and 65535 or \"unbounded\""));
160 builder.setDepth(value);
164 // check and set fields
165 if (!fields.isEmpty()) {
166 if (identifier.getMountPoint() != null) {
167 builder.setFieldPaths(parseFieldsPaths(identifier, fields.get(0)));
169 builder.setFields(parseFieldsParameter(identifier, fields.get(0)));
173 // check and set withDefaults parameter
174 if (!withDefaults.isEmpty()) {
175 final String str = withDefaults.get(0);
176 final WithDefaults val = WithDefaults.forValue(str);
178 throw new RestconfDocumentedException(new RestconfError(ErrorType.PROTOCOL, ErrorTag.INVALID_VALUE,
179 "Invalid with-defaults parameter: " + str, null,
180 "The with-defaults parameter must be a string in " + WithDefaults.possibleValues()));
186 case REPORT_ALL_TAGGED:
187 builder.setTagged(true);
190 builder.setWithDefault(val.value());
193 return builder.build();
197 * Read specific type of data from data store via transaction. Close {@link DOMTransactionChain} if any
198 * inside of object {@link RestconfStrategy} provided as a parameter.
200 * @param valueOfContent type of data to read (config, state, all)
201 * @param path the path to read
202 * @param strategy {@link RestconfStrategy} - object that perform the actual DS operations
203 * @param withDefa value of with-defaults parameter
204 * @param ctx schema context
205 * @return {@link NormalizedNode}
207 public static @Nullable NormalizedNode readData(final @NonNull String valueOfContent,
208 final @NonNull YangInstanceIdentifier path,
209 final @NonNull RestconfStrategy strategy,
210 final String withDefa, final EffectiveModelContext ctx) {
211 switch (valueOfContent) {
212 case RestconfDataServiceConstant.ReadData.CONFIG:
213 final NormalizedNode read = readDataViaTransaction(strategy, LogicalDatastoreType.CONFIGURATION, path);
214 return withDefa == null ? read : prepareDataByParamWithDef(read, path, withDefa, ctx);
215 case RestconfDataServiceConstant.ReadData.NONCONFIG:
216 return readDataViaTransaction(strategy, LogicalDatastoreType.OPERATIONAL, path);
217 case RestconfDataServiceConstant.ReadData.ALL:
218 return readAllData(strategy, path, withDefa, ctx);
220 throw new RestconfDocumentedException(
221 new RestconfError(ErrorType.PROTOCOL, ErrorTag.INVALID_VALUE,
222 "Invalid content parameter: " + valueOfContent, null,
223 "The content parameter value must be either config, nonconfig or all (default)"));
228 * Read specific type of data from data store via transaction with specified subtrees that should only be read.
229 * Close {@link DOMTransactionChain} inside of object {@link RestconfStrategy} provided as a parameter.
231 * @param valueOfContent type of data to read (config, state, all)
232 * @param path the parent path to read
233 * @param strategy {@link RestconfStrategy} - object that perform the actual DS operations
234 * @param withDefa value of with-defaults parameter
235 * @param ctx schema context
236 * @param fields paths to selected subtrees which should be read, relative to to the parent path
237 * @return {@link NormalizedNode}
239 public static @Nullable NormalizedNode readData(final @NonNull String valueOfContent,
240 final @NonNull YangInstanceIdentifier path, final @NonNull RestconfStrategy strategy,
241 final @Nullable String withDefa, @NonNull final EffectiveModelContext ctx,
242 final @NonNull List<YangInstanceIdentifier> fields) {
243 switch (valueOfContent) {
244 case RestconfDataServiceConstant.ReadData.CONFIG:
245 final NormalizedNode read = readDataViaTransaction(strategy, LogicalDatastoreType.CONFIGURATION, path,
247 return withDefa == null ? read : prepareDataByParamWithDef(read, path, withDefa, ctx);
248 case RestconfDataServiceConstant.ReadData.NONCONFIG:
249 return readDataViaTransaction(strategy, LogicalDatastoreType.OPERATIONAL, path, fields);
250 case RestconfDataServiceConstant.ReadData.ALL:
251 return readAllData(strategy, path, withDefa, ctx, fields);
253 throw new RestconfDocumentedException(new RestconfError(ErrorType.PROTOCOL, ErrorTag.INVALID_VALUE,
254 "Invalid content parameter: " + valueOfContent, null,
255 "The content parameter value must be either config, nonconfig or all (default)"));
260 * Check if URI does not contain value for the same parameter more than once.
262 * @param parameterValues URI parameter values
263 * @param parameterName URI parameter name
266 static void checkParameterCount(final @NonNull List<String> parameterValues, final @NonNull String parameterName) {
267 if (parameterValues.size() > 1) {
268 throw new RestconfDocumentedException(
269 "Parameter " + parameterName + " can appear at most once in request URI",
270 ErrorType.PROTOCOL, ErrorTag.INVALID_VALUE);
275 * Check if URI does not contain not allowed parameters for specified operation.
277 * @param usedParameters parameters used in URI request
278 * @param allowedParameters allowed parameters for operation
281 static void checkParametersTypes(final @NonNull Set<String> usedParameters,
282 final @NonNull Set<String> allowedParameters) {
283 if (!allowedParameters.containsAll(usedParameters)) {
284 final Set<String> notAllowedParameters = usedParameters.stream()
285 .filter(param -> !allowedParameters.contains(param))
286 .collect(Collectors.toSet());
287 throw new RestconfDocumentedException(
288 "Not allowed parameters for " + READ_TYPE_TX + " operation: " + notAllowedParameters,
289 ErrorType.PROTOCOL, ErrorTag.INVALID_VALUE);
293 private static NormalizedNode prepareDataByParamWithDef(final NormalizedNode result,
294 final YangInstanceIdentifier path, final String withDefa, final EffectiveModelContext ctx) {
304 throw new RestconfDocumentedException("");
307 final DataSchemaContextTree baseSchemaCtxTree = DataSchemaContextTree.from(ctx);
308 final DataSchemaNode baseSchemaNode = baseSchemaCtxTree.findChild(path).orElseThrow().getDataSchemaNode();
309 if (result instanceof ContainerNode) {
310 final DataContainerNodeBuilder<NodeIdentifier, ContainerNode> builder =
311 SchemaAwareBuilders.containerBuilder((ContainerSchemaNode) baseSchemaNode);
312 buildCont(builder, (ContainerNode) result, baseSchemaCtxTree, path, trim);
313 return builder.build();
315 final DataContainerNodeBuilder<NodeIdentifierWithPredicates, MapEntryNode> builder =
316 SchemaAwareBuilders.mapEntryBuilder((ListSchemaNode) baseSchemaNode);
317 buildMapEntryBuilder(builder, (MapEntryNode) result, baseSchemaCtxTree, path, trim,
318 ((ListSchemaNode) baseSchemaNode).getKeyDefinition());
319 return builder.build();
323 private static void buildMapEntryBuilder(
324 final DataContainerNodeBuilder<NodeIdentifierWithPredicates, MapEntryNode> builder,
325 final MapEntryNode result, final DataSchemaContextTree baseSchemaCtxTree,
326 final YangInstanceIdentifier actualPath, final boolean trim, final List<QName> keys) {
327 for (final DataContainerChild child : result.body()) {
328 final YangInstanceIdentifier path = actualPath.node(child.getIdentifier());
329 final DataSchemaNode childSchema = baseSchemaCtxTree.findChild(path).orElseThrow().getDataSchemaNode();
330 if (child instanceof ContainerNode) {
331 final DataContainerNodeBuilder<NodeIdentifier, ContainerNode> childBuilder =
332 SchemaAwareBuilders.containerBuilder((ContainerSchemaNode) childSchema);
333 buildCont(childBuilder, (ContainerNode) child, baseSchemaCtxTree, path, trim);
334 builder.withChild(childBuilder.build());
335 } else if (child instanceof MapNode) {
336 final CollectionNodeBuilder<MapEntryNode, SystemMapNode> childBuilder =
337 SchemaAwareBuilders.mapBuilder((ListSchemaNode) childSchema);
338 buildList(childBuilder, (MapNode) child, baseSchemaCtxTree, path, trim,
339 ((ListSchemaNode) childSchema).getKeyDefinition());
340 builder.withChild(childBuilder.build());
341 } else if (child instanceof LeafNode) {
342 final Object defaultVal = ((LeafSchemaNode) childSchema).getType().getDefaultValue().orElse(null);
343 final Object nodeVal = child.body();
344 final NormalizedNodeBuilder<NodeIdentifier, Object, LeafNode<Object>> leafBuilder =
345 SchemaAwareBuilders.leafBuilder((LeafSchemaNode) childSchema);
346 if (keys.contains(child.getIdentifier().getNodeType())) {
347 leafBuilder.withValue(((LeafNode<?>) child).body());
348 builder.withChild(leafBuilder.build());
351 if (defaultVal == null || !defaultVal.equals(nodeVal)) {
352 leafBuilder.withValue(((LeafNode<?>) child).body());
353 builder.withChild(leafBuilder.build());
356 if (defaultVal != null && defaultVal.equals(nodeVal)) {
357 leafBuilder.withValue(((LeafNode<?>) child).body());
358 builder.withChild(leafBuilder.build());
366 private static void buildList(final CollectionNodeBuilder<MapEntryNode, SystemMapNode> builder,
367 final MapNode result, final DataSchemaContextTree baseSchemaCtxTree, final YangInstanceIdentifier path,
368 final boolean trim, final List<QName> keys) {
369 for (final MapEntryNode mapEntryNode : result.body()) {
370 final YangInstanceIdentifier actualNode = path.node(mapEntryNode.getIdentifier());
371 final DataSchemaNode childSchema = baseSchemaCtxTree.findChild(actualNode).orElseThrow()
372 .getDataSchemaNode();
373 final DataContainerNodeBuilder<NodeIdentifierWithPredicates, MapEntryNode> mapEntryBuilder =
374 SchemaAwareBuilders.mapEntryBuilder((ListSchemaNode) childSchema);
375 buildMapEntryBuilder(mapEntryBuilder, mapEntryNode, baseSchemaCtxTree, actualNode, trim, keys);
376 builder.withChild(mapEntryBuilder.build());
380 private static void buildCont(final DataContainerNodeBuilder<NodeIdentifier, ContainerNode> builder,
381 final ContainerNode result, final DataSchemaContextTree baseSchemaCtxTree,
382 final YangInstanceIdentifier actualPath, final boolean trim) {
383 for (final DataContainerChild child : result.body()) {
384 final YangInstanceIdentifier path = actualPath.node(child.getIdentifier());
385 final DataSchemaNode childSchema = baseSchemaCtxTree.findChild(path).orElseThrow().getDataSchemaNode();
386 if (child instanceof ContainerNode) {
387 final DataContainerNodeBuilder<NodeIdentifier, ContainerNode> builderChild =
388 SchemaAwareBuilders.containerBuilder((ContainerSchemaNode) childSchema);
389 buildCont(builderChild, result, baseSchemaCtxTree, actualPath, trim);
390 builder.withChild(builderChild.build());
391 } else if (child instanceof MapNode) {
392 final CollectionNodeBuilder<MapEntryNode, SystemMapNode> childBuilder =
393 SchemaAwareBuilders.mapBuilder((ListSchemaNode) childSchema);
394 buildList(childBuilder, (MapNode) child, baseSchemaCtxTree, path, trim,
395 ((ListSchemaNode) childSchema).getKeyDefinition());
396 builder.withChild(childBuilder.build());
397 } else if (child instanceof LeafNode) {
398 final Object defaultVal = ((LeafSchemaNode) childSchema).getType().getDefaultValue().orElse(null);
399 final Object nodeVal = child.body();
400 final NormalizedNodeBuilder<NodeIdentifier, Object, LeafNode<Object>> leafBuilder =
401 SchemaAwareBuilders.leafBuilder((LeafSchemaNode) childSchema);
403 if (defaultVal == null || !defaultVal.equals(nodeVal)) {
404 leafBuilder.withValue(((LeafNode<?>) child).body());
405 builder.withChild(leafBuilder.build());
408 if (defaultVal != null && defaultVal.equals(nodeVal)) {
409 leafBuilder.withValue(((LeafNode<?>) child).body());
410 builder.withChild(leafBuilder.build());
418 * If is set specific {@link LogicalDatastoreType} in {@link RestconfStrategy}, then read this type of data from DS.
419 * If don't, we have to read all data from DS (state + config)
421 * @param strategy {@link RestconfStrategy} - object that perform the actual DS operations
422 * @param closeTransactionChain If is set to true, after transaction it will close transactionChain
423 * in {@link RestconfStrategy} if any
424 * @return {@link NormalizedNode}
426 static @Nullable NormalizedNode readDataViaTransaction(final @NonNull RestconfStrategy strategy,
427 final LogicalDatastoreType store, final YangInstanceIdentifier path) {
428 return extractReadData(strategy, path, strategy.read(store, path));
432 * Read specific type of data {@link LogicalDatastoreType} via transaction in {@link RestconfStrategy} with
433 * specified subtrees that should only be read.
435 * @param strategy {@link RestconfStrategy} - object that perform the actual DS operations
436 * @param store datastore type
437 * @param path parent path to selected fields
438 * @param closeTransactionChain if it is set to {@code true}, after transaction it will close transactionChain
439 * in {@link RestconfStrategy} if any
440 * @param fields paths to selected subtrees which should be read, relative to to the parent path
441 * @return {@link NormalizedNode}
443 private static @Nullable NormalizedNode readDataViaTransaction(final @NonNull RestconfStrategy strategy,
444 final @NonNull LogicalDatastoreType store, final @NonNull YangInstanceIdentifier path,
445 final @NonNull List<YangInstanceIdentifier> fields) {
446 return extractReadData(strategy, path, strategy.read(store, path, fields));
449 private static NormalizedNode extractReadData(final RestconfStrategy strategy,
450 final YangInstanceIdentifier path, final ListenableFuture<Optional<NormalizedNode>> dataFuture) {
451 final NormalizedNodeFactory dataFactory = new NormalizedNodeFactory();
452 FutureCallbackTx.addCallback(dataFuture, READ_TYPE_TX, dataFactory, path);
453 return dataFactory.build();
457 * Read config and state data, then map them. Close {@link DOMTransactionChain} inside of object
458 * {@link RestconfStrategy} provided as a parameter if any.
460 * @param strategy {@link RestconfStrategy} - object that perform the actual DS operations
461 * @param withDefa with-defaults parameter
462 * @param ctx schema context
463 * @return {@link NormalizedNode}
465 private static @Nullable NormalizedNode readAllData(final @NonNull RestconfStrategy strategy,
466 final YangInstanceIdentifier path, final String withDefa, final EffectiveModelContext ctx) {
467 // PREPARE STATE DATA NODE
468 final NormalizedNode stateDataNode = readDataViaTransaction(strategy, LogicalDatastoreType.OPERATIONAL, path);
469 // PREPARE CONFIG DATA NODE
470 final NormalizedNode configDataNode = readDataViaTransaction(strategy, LogicalDatastoreType.CONFIGURATION,
473 return mergeConfigAndSTateDataIfNeeded(stateDataNode,
474 withDefa == null ? configDataNode : prepareDataByParamWithDef(configDataNode, path, withDefa, ctx));
478 * Read config and state data with selected subtrees that should only be read, then map them.
479 * Close {@link DOMTransactionChain} inside of object {@link RestconfStrategy} provided as a parameter.
481 * @param strategy {@link RestconfStrategy} - object that perform the actual DS operations
482 * @param path parent path to selected fields
483 * @param withDefa with-defaults parameter
484 * @param ctx schema context
485 * @param fields paths to selected subtrees which should be read, relative to to the parent path
486 * @return {@link NormalizedNode}
488 private static @Nullable NormalizedNode readAllData(final @NonNull RestconfStrategy strategy,
489 final @NonNull YangInstanceIdentifier path, final @Nullable String withDefa,
490 final @NonNull EffectiveModelContext ctx, final @NonNull List<YangInstanceIdentifier> fields) {
491 // PREPARE STATE DATA NODE
492 final NormalizedNode stateDataNode = readDataViaTransaction(strategy, LogicalDatastoreType.OPERATIONAL, path,
495 // PREPARE CONFIG DATA NODE
496 final NormalizedNode configDataNode = readDataViaTransaction(strategy, LogicalDatastoreType.CONFIGURATION, path,
498 return mergeConfigAndSTateDataIfNeeded(stateDataNode,
499 withDefa == null ? configDataNode : prepareDataByParamWithDef(configDataNode, path, withDefa, ctx));
502 private static NormalizedNode mergeConfigAndSTateDataIfNeeded(final NormalizedNode stateDataNode,
503 final NormalizedNode configDataNode) {
505 if (stateDataNode == null && configDataNode == null) {
509 // return config data
510 if (stateDataNode == null) {
511 return configDataNode;
515 if (configDataNode == null) {
516 return stateDataNode;
519 // merge data from config and state
520 return mergeStateAndConfigData(stateDataNode, configDataNode);
524 * Merge state and config data into a single NormalizedNode.
526 * @param stateDataNode data node of state data
527 * @param configDataNode data node of config data
528 * @return {@link NormalizedNode}
530 private static @NonNull NormalizedNode mergeStateAndConfigData(
531 final @NonNull NormalizedNode stateDataNode, final @NonNull NormalizedNode configDataNode) {
532 validateNodeMerge(stateDataNode, configDataNode);
533 if (configDataNode instanceof RpcDefinition) {
534 return prepareRpcData(configDataNode, stateDataNode);
536 return prepareData(configDataNode, stateDataNode);
541 * Validates whether the two NormalizedNodes can be merged.
543 * @param stateDataNode data node of state data
544 * @param configDataNode data node of config data
546 private static void validateNodeMerge(final @NonNull NormalizedNode stateDataNode,
547 final @NonNull NormalizedNode configDataNode) {
548 final QNameModule moduleOfStateData = stateDataNode.getIdentifier().getNodeType().getModule();
549 final QNameModule moduleOfConfigData = configDataNode.getIdentifier().getNodeType().getModule();
550 if (!moduleOfStateData.equals(moduleOfConfigData)) {
551 throw new RestconfDocumentedException("Unable to merge data from different modules.");
556 * Prepare and map data for rpc.
558 * @param configDataNode data node of config data
559 * @param stateDataNode data node of state data
560 * @return {@link NormalizedNode}
562 private static @NonNull NormalizedNode prepareRpcData(final @NonNull NormalizedNode configDataNode,
563 final @NonNull NormalizedNode stateDataNode) {
564 final DataContainerNodeBuilder<NodeIdentifierWithPredicates, MapEntryNode> mapEntryBuilder = ImmutableNodes
566 mapEntryBuilder.withNodeIdentifier((NodeIdentifierWithPredicates) configDataNode.getIdentifier());
569 mapRpcDataNode(configDataNode, mapEntryBuilder);
571 mapRpcDataNode(stateDataNode, mapEntryBuilder);
573 return ImmutableNodes.mapNodeBuilder(configDataNode.getIdentifier().getNodeType())
574 .addChild(mapEntryBuilder.build())
579 * Map node to map entry builder.
581 * @param dataNode data node
582 * @param mapEntryBuilder builder for mapping data
584 private static void mapRpcDataNode(final @NonNull NormalizedNode dataNode,
585 final @NonNull DataContainerNodeBuilder<NodeIdentifierWithPredicates, MapEntryNode> mapEntryBuilder) {
586 ((ContainerNode) dataNode).body().forEach(mapEntryBuilder::addChild);
590 * Prepare and map all data from DS.
592 * @param configDataNode data node of config data
593 * @param stateDataNode data node of state data
594 * @return {@link NormalizedNode}
596 @SuppressWarnings("unchecked")
597 private static @NonNull NormalizedNode prepareData(final @NonNull NormalizedNode configDataNode,
598 final @NonNull NormalizedNode stateDataNode) {
599 if (configDataNode instanceof UserMapNode) {
600 final CollectionNodeBuilder<MapEntryNode, UserMapNode> builder = Builders
601 .orderedMapBuilder().withNodeIdentifier(((MapNode) configDataNode).getIdentifier());
604 ((UserMapNode) configDataNode).body(), ((UserMapNode) stateDataNode).body(), builder);
606 return builder.build();
607 } else if (configDataNode instanceof MapNode) {
608 final CollectionNodeBuilder<MapEntryNode, SystemMapNode> builder = ImmutableNodes
609 .mapNodeBuilder().withNodeIdentifier(((MapNode) configDataNode).getIdentifier());
612 ((MapNode) configDataNode).body(), ((MapNode) stateDataNode).body(), builder);
614 return builder.build();
615 } else if (configDataNode instanceof MapEntryNode) {
616 final DataContainerNodeBuilder<NodeIdentifierWithPredicates, MapEntryNode> builder = ImmutableNodes
617 .mapEntryBuilder().withNodeIdentifier(((MapEntryNode) configDataNode).getIdentifier());
620 ((MapEntryNode) configDataNode).body(), ((MapEntryNode) stateDataNode).body(), builder);
622 return builder.build();
623 } else if (configDataNode instanceof ContainerNode) {
624 final DataContainerNodeBuilder<NodeIdentifier, ContainerNode> builder = Builders
625 .containerBuilder().withNodeIdentifier(((ContainerNode) configDataNode).getIdentifier());
628 ((ContainerNode) configDataNode).body(), ((ContainerNode) stateDataNode).body(), builder);
630 return builder.build();
631 } else if (configDataNode instanceof AugmentationNode) {
632 final DataContainerNodeBuilder<AugmentationIdentifier, AugmentationNode> builder = Builders
633 .augmentationBuilder().withNodeIdentifier(((AugmentationNode) configDataNode).getIdentifier());
635 mapValueToBuilder(((AugmentationNode) configDataNode).body(),
636 ((AugmentationNode) stateDataNode).body(), builder);
638 return builder.build();
639 } else if (configDataNode instanceof ChoiceNode) {
640 final DataContainerNodeBuilder<NodeIdentifier, ChoiceNode> builder = Builders
641 .choiceBuilder().withNodeIdentifier(((ChoiceNode) configDataNode).getIdentifier());
644 ((ChoiceNode) configDataNode).body(), ((ChoiceNode) stateDataNode).body(), builder);
646 return builder.build();
647 } else if (configDataNode instanceof LeafNode) {
648 return ImmutableNodes.leafNode(configDataNode.getIdentifier().getNodeType(), configDataNode.body());
649 } else if (configDataNode instanceof UserLeafSetNode) {
650 final ListNodeBuilder<Object, UserLeafSetNode<Object>> builder = Builders
651 .orderedLeafSetBuilder().withNodeIdentifier(((UserLeafSetNode<?>) configDataNode).getIdentifier());
653 mapValueToBuilder(((UserLeafSetNode<Object>) configDataNode).body(),
654 ((UserLeafSetNode<Object>) stateDataNode).body(), builder);
655 return builder.build();
656 } else if (configDataNode instanceof LeafSetNode) {
657 final ListNodeBuilder<Object, SystemLeafSetNode<Object>> builder = Builders
658 .leafSetBuilder().withNodeIdentifier(((LeafSetNode<?>) configDataNode).getIdentifier());
660 mapValueToBuilder(((LeafSetNode<Object>) configDataNode).body(),
661 ((LeafSetNode<Object>) stateDataNode).body(), builder);
662 return builder.build();
663 } else if (configDataNode instanceof LeafSetEntryNode) {
664 return Builders.leafSetEntryBuilder()
665 .withNodeIdentifier(((LeafSetEntryNode<?>) configDataNode).getIdentifier())
666 .withValue(configDataNode.body())
668 } else if (configDataNode instanceof UnkeyedListNode) {
669 final CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> builder = Builders
670 .unkeyedListBuilder().withNodeIdentifier(((UnkeyedListNode) configDataNode).getIdentifier());
672 mapValueToBuilder(((UnkeyedListNode) configDataNode).body(),
673 ((UnkeyedListNode) stateDataNode).body(), builder);
674 return builder.build();
675 } else if (configDataNode instanceof UnkeyedListEntryNode) {
676 final DataContainerNodeBuilder<NodeIdentifier, UnkeyedListEntryNode> builder = Builders
677 .unkeyedListEntryBuilder().withNodeIdentifier(((UnkeyedListEntryNode) configDataNode).getIdentifier());
679 mapValueToBuilder(((UnkeyedListEntryNode) configDataNode).body(),
680 ((UnkeyedListEntryNode) stateDataNode).body(), builder);
681 return builder.build();
683 throw new RestconfDocumentedException("Unexpected node type: " + configDataNode.getClass().getName());
688 * Map value from container node to builder.
690 * @param configData collection of config data nodes
691 * @param stateData collection of state data nodes
692 * @param builder builder
694 private static <T extends NormalizedNode> void mapValueToBuilder(
695 final @NonNull Collection<T> configData, final @NonNull Collection<T> stateData,
696 final @NonNull NormalizedNodeContainerBuilder<?, PathArgument, T, ?> builder) {
697 final Map<PathArgument, T> configMap = configData.stream().collect(
698 Collectors.toMap(NormalizedNode::getIdentifier, Function.identity()));
699 final Map<PathArgument, T> stateMap = stateData.stream().collect(
700 Collectors.toMap(NormalizedNode::getIdentifier, Function.identity()));
702 // merge config and state data of children with different identifiers
703 mapDataToBuilder(configMap, stateMap, builder);
705 // merge config and state data of children with the same identifiers
706 mergeDataToBuilder(configMap, stateMap, builder);
710 * Map data with different identifiers to builder. Data with different identifiers can be just added
711 * as childs to parent node.
713 * @param configMap map of config data nodes
714 * @param stateMap map of state data nodes
715 * @param builder - builder
717 private static <T extends NormalizedNode> void mapDataToBuilder(
718 final @NonNull Map<PathArgument, T> configMap, final @NonNull Map<PathArgument, T> stateMap,
719 final @NonNull NormalizedNodeContainerBuilder<?, PathArgument, T, ?> builder) {
720 configMap.entrySet().stream().filter(x -> !stateMap.containsKey(x.getKey())).forEach(
721 y -> builder.addChild(y.getValue()));
722 stateMap.entrySet().stream().filter(x -> !configMap.containsKey(x.getKey())).forEach(
723 y -> builder.addChild(y.getValue()));
727 * Map data with the same identifiers to builder. Data with the same identifiers cannot be just added but we need to
728 * go one level down with {@code prepareData} method.
730 * @param configMap immutable config data
731 * @param stateMap immutable state data
732 * @param builder - builder
734 @SuppressWarnings("unchecked")
735 private static <T extends NormalizedNode> void mergeDataToBuilder(
736 final @NonNull Map<PathArgument, T> configMap, final @NonNull Map<PathArgument, T> stateMap,
737 final @NonNull NormalizedNodeContainerBuilder<?, PathArgument, T, ?> builder) {
738 // it is enough to process only config data because operational contains the same data
739 configMap.entrySet().stream().filter(x -> stateMap.containsKey(x.getKey())).forEach(
740 y -> builder.addChild((T) prepareData(y.getValue(), stateMap.get(y.getKey()))));