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authorToineSiebelink <toine.siebelink@est.tech>2021-01-25 18:46:20 +0000
committerputhuparambil.aditya <aditya.puthuparambil@bell.ca>2021-01-27 16:01:33 +0000
commit099f89eda3b0c94d20612ebf1d62795ab7dc833a (patch)
tree9ac4eeb64c92bdf8b4de1773dcfd195158b30a6c /cps-service/src/main/java
parent34afca00d1f8b2fabe7708c76be714687e136d68 (diff)
Draft at proposal where the DataNodeBuilder 'replaces' yang Utils to buidl a DataNode
Most complexity is related to immutable collections and the fact taht we are adding data while recursing over the orignal data in an uncontrolled order. I cleaned it up as best I could with no logic in DataNode. Espcially the handling of LitLeaves requires some specialed handling. Thsi is just a draft solution for that I still propose we get back to that in dedicated user stories for handling the various types of Yang elements Hope this helps... Issue-ID: CPS-137 Signed-off-by: ToineSiebelink <toine.siebelink@est.tech> Change-Id: Iab7cfcff67412c01bcdab95e707e1350bf60fab1
Diffstat (limited to 'cps-service/src/main/java')
-rw-r--r--cps-service/src/main/java/org/onap/cps/api/impl/Fragment.java162
-rw-r--r--cps-service/src/main/java/org/onap/cps/spi/model/DataNode.java24
-rw-r--r--cps-service/src/main/java/org/onap/cps/spi/model/DataNodeBuilder.java176
-rw-r--r--cps-service/src/main/java/org/onap/cps/utils/YangUtils.java102
4 files changed, 206 insertions, 258 deletions
diff --git a/cps-service/src/main/java/org/onap/cps/api/impl/Fragment.java b/cps-service/src/main/java/org/onap/cps/api/impl/Fragment.java
deleted file mode 100644
index 0f785b718f..0000000000
--- a/cps-service/src/main/java/org/onap/cps/api/impl/Fragment.java
+++ /dev/null
@@ -1,162 +0,0 @@
-/*
- * ============LICENSE_START=======================================================
- * Copyright (C) 2020 Nordix Foundation
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.cps.api.impl;
-
-import com.google.common.collect.ImmutableList;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Map;
-import java.util.Optional;
-import java.util.Set;
-import lombok.Getter;
-import org.opendaylight.yangtools.yang.common.QName;
-import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
-import org.opendaylight.yangtools.yang.model.api.Module;
-
-/**
- * Class to store a Yang Fragment (container or list element).
- */
-public class Fragment {
-
- @Getter
- private final String xpath;
-
- @Getter
- private final Map<String, Object> attributes = new HashMap<>();
-
- @Getter
- private final Module module;
-
- @Getter
- private final Fragment parentFragment;
-
- @Getter
- private final Set<Fragment> childFragments = new HashSet<>(0);
-
- private final QName[] qnames;
-
- private Optional<Set<String>> optionalLeafListNames = Optional.empty();
-
- /**
- * Create a root Fragment.
- *
- * @param module the Yang module that encompasses this fragment
- * @param qnames the list of qualified names that points the schema node for this fragment
- * @param xpath the xpath of root fragment
- */
- public static Fragment createRootFragment(final Module module, final QName[] qnames, final String xpath) {
- return new Fragment(null, module, qnames, xpath);
- }
-
- /**
- * Create a Child Fragment under a given Parent Fragment.
- *
- * @param parentFragment the parent (can be null for 'root' objects)
- * @param module the Yang module that encompasses this fragment
- * @param qnames array of qualified names that points the schema node for this fragment
- * @param xpath the xpath for this fragment
- */
- private Fragment(final Fragment parentFragment, final Module module, final QName[] qnames, final String xpath) {
- this.parentFragment = parentFragment;
- this.module = module;
- this.qnames = qnames;
- this.xpath = xpath;
- }
-
- /**
- * Create a Child Fragment where the current Fragment is the parent.
- *
- * @param childQname The Qualified name for the child (relative to the parent)
- * @param childXPath The child xpath (relative to the parrent)
- * @return the child fragment
- */
- public Fragment createChildFragment(final QName childQname, final String childXPath) {
- final QName[] qnamesForChild = Arrays.copyOf(qnames, qnames.length + 1);
- qnamesForChild[qnamesForChild.length - 1] = childQname;
- final Fragment childFragment = new Fragment(this, module, qnamesForChild, getXpath() + childXPath);
- childFragments.add(childFragment);
- return childFragment;
- }
-
- /**
- * Define a leaf list by providing its name.
- * The list is not instantiated until the first value is provided
- *
- * @param name the name of the leaf list
- */
- public void addLeafListName(final String name) {
- if (optionalLeafListNames.isEmpty()) {
- optionalLeafListNames = Optional.of(new HashSet<>());
- }
- optionalLeafListNames.get().add(name);
- }
-
- /**
- * Add a leaf or leaf list value.
- * For Leaf lists it is essential to first define the attribute is a leaf list by using addLeafListName method
- *
- * @param name the name of the leaf (or leaf list)
- * @param value the value of the leaf (or element of leaf list)
- */
- public void addLeafValue(final String name, final Object value) {
- if (optionalLeafListNames.isPresent() && optionalLeafListNames.get().contains(name)) {
- addLeafListValue(name, value);
- } else {
- attributes.put(name, value);
- }
- }
-
- private void addLeafListValue(final String name, final Object value) {
- if (attributes.containsKey(name)) {
- final ImmutableList<Object> oldList = (ImmutableList<Object>) attributes.get(name);
- final List<Object> newList = new ArrayList<>(oldList);
- newList.add(value);
- attributes.put(name, ImmutableList.copyOf(newList));
- } else {
- attributes.put(name, ImmutableList.of(value));
- }
- }
-
- /**
- * Get the SchemaNodeIdentifier for this fragment.
- *
- * @return the SchemaNodeIdentifier
- */
- public String getSchemaNodeIdentifier() {
- final StringBuilder stringBuilder = new StringBuilder();
- for (final QName qname : qnames) {
- stringBuilder.append(qname.getLocalName());
- stringBuilder.append('/');
- }
- return stringBuilder.toString();
- }
-
- /**
- * Get the Optional SchemaNode (model) for this data fragment.
- *
- * @return the Optional SchemaNode
- */
- public Optional<DataSchemaNode> getSchemaNode() {
- return module.findDataTreeChild(qnames);
- }
-}
diff --git a/cps-service/src/main/java/org/onap/cps/spi/model/DataNode.java b/cps-service/src/main/java/org/onap/cps/spi/model/DataNode.java
index e9c6b56ea5..721a7c0426 100644
--- a/cps-service/src/main/java/org/onap/cps/spi/model/DataNode.java
+++ b/cps-service/src/main/java/org/onap/cps/spi/model/DataNode.java
@@ -1,6 +1,7 @@
/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2020 Nordix Foundation. All rights reserved.
+ * Modifications Copyright (C) 2021 Bell Canada. All rights reserved.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -21,24 +22,27 @@
package org.onap.cps.spi.model;
import java.util.Collection;
+import java.util.Collections;
import java.util.Map;
-import lombok.AllArgsConstructor;
-import lombok.Builder;
-import lombok.Data;
-import lombok.NoArgsConstructor;
+import java.util.Optional;
+import java.util.Set;
+import lombok.AccessLevel;
+import lombok.Getter;
+import lombok.Setter;
-@Data
-@Builder
-@NoArgsConstructor
-@AllArgsConstructor
+@Setter(AccessLevel.PROTECTED)
+@Getter
public class DataNode {
+ DataNode() { }
+
private String dataspace;
private String schemaSetName;
private String anchorName;
private ModuleReference moduleReference;
private String xpath;
- private Map<String, Object> leaves;
+ private Map<String, Object> leaves = Collections.emptyMap();
private Collection<String> xpathsChildren;
- private Collection<DataNode> childDataNodes;
+ private Collection<DataNode> childDataNodes = Collections.emptySet();
+ private Optional<Set<String>> optionalLeafListNames = Optional.empty();
}
diff --git a/cps-service/src/main/java/org/onap/cps/spi/model/DataNodeBuilder.java b/cps-service/src/main/java/org/onap/cps/spi/model/DataNodeBuilder.java
new file mode 100644
index 0000000000..cd6a3a2201
--- /dev/null
+++ b/cps-service/src/main/java/org/onap/cps/spi/model/DataNodeBuilder.java
@@ -0,0 +1,176 @@
+/*
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2021 Bell Canada. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.spi.model;
+
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.ImmutableSet;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import lombok.extern.slf4j.Slf4j;
+import org.onap.cps.utils.YangUtils;
+import org.opendaylight.yangtools.yang.data.api.schema.DataContainerNode;
+import org.opendaylight.yangtools.yang.data.api.schema.LeafSetNode;
+import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
+import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+import org.opendaylight.yangtools.yang.data.api.schema.ValueNode;
+
+@Slf4j
+public class DataNodeBuilder {
+
+ private NormalizedNode normalizedNodeTree;
+ private String xpath;
+ private Collection<DataNode> childDataNodes = Collections.emptySet();
+
+
+ /** To use {@link NormalizedNode} for creating {@link DataNode}.
+ *
+ * @param normalizedNodeTree used for creating the Data Node
+ *
+ * @return this {@link DataNodeBuilder} object
+ */
+ public DataNodeBuilder withNormalizedNodeTree(final NormalizedNode normalizedNodeTree) {
+ this.normalizedNodeTree = normalizedNodeTree;
+ return this;
+ }
+
+ /**
+ * To use xpath for creating {@link DataNode}.
+ * @param xpath for the data node
+ * @return DataNodeBuilder
+ */
+ public DataNodeBuilder withXpath(final String xpath) {
+ this.xpath = xpath;
+ return this;
+ }
+
+ /**
+ * To specify child nodes needs to be used while creating {@link DataNode}.
+ * @param childDataNodes to be added to the dataNode
+ * @return DataNodeBuilder
+ */
+ public DataNodeBuilder withChildDataNodes(final Collection<DataNode> childDataNodes) {
+ // Added as this is being set from test cases .
+ // Open for suggestions
+ this.childDataNodes = childDataNodes;
+ return this;
+ }
+
+ /**
+ * To create the {@link DataNode}.
+ *
+ * @return {@link DataNode}
+ */
+ public DataNode build() {
+ if (normalizedNodeTree != null) {
+ return buildFromNormalizedNodeTree();
+ } else {
+ return buildFromAttributes();
+ }
+ }
+
+ private DataNode buildFromAttributes() {
+ final DataNode dataNode = new DataNode();
+ dataNode.setXpath(xpath);
+ dataNode.setChildDataNodes(childDataNodes);
+ return dataNode;
+ }
+
+ private DataNode buildFromNormalizedNodeTree() {
+ xpath = YangUtils.buildXpath(normalizedNodeTree.getIdentifier());
+ final DataNode dataNode = new DataNodeBuilder().withXpath(xpath).build();
+ addDataNodeFromNormalizedNode(dataNode, normalizedNodeTree);
+ return dataNode;
+ }
+
+ private void addDataNodeFromNormalizedNode(final DataNode currentDataNode,
+ final NormalizedNode normalizedNode) {
+ if (normalizedNode instanceof DataContainerNode) {
+ addYangContainer(currentDataNode, (DataContainerNode) normalizedNode);
+ } else if (normalizedNode instanceof MapNode) {
+ addDataNodeForEachListElement(currentDataNode, (MapNode) normalizedNode);
+ } else if (normalizedNode instanceof ValueNode) {
+ final ValueNode valuesNode = (ValueNode) normalizedNode;
+ addYangLeaf(currentDataNode, valuesNode.getNodeType().getLocalName(), valuesNode.getValue());
+ } else if (normalizedNode instanceof LeafSetNode) {
+ addYangLeafList(currentDataNode, (LeafSetNode) normalizedNode);
+ } else {
+ log.warn("Cannot normalize {}", normalizedNode.getClass());
+ }
+ }
+
+ private void addYangContainer(final DataNode currentDataNode, final DataContainerNode dataContainerNode) {
+ final Collection<NormalizedNode> normalizedChildNodes = dataContainerNode.getValue();
+ for (final NormalizedNode normalizedNode : normalizedChildNodes) {
+ addDataNodeFromNormalizedNode(currentDataNode, normalizedNode);
+ }
+ }
+
+ private void addYangLeaf(final DataNode currentDataNode, final String leafName, final Object leafValue) {
+ final Map leaves = new ImmutableMap.Builder<String, Object>()
+ .putAll(currentDataNode.getLeaves())
+ .put(leafName, leafValue)
+ .build();
+ currentDataNode.setLeaves(leaves);
+ }
+
+ private void addYangLeafList(final DataNode currentDataNode, final LeafSetNode leafSetNode) {
+ final ImmutableSet.Builder builder = new ImmutableSet.Builder<String>();
+ final String leafListName = leafSetNode.getNodeType().getLocalName();
+ final Optional<Set<String>> optionalLeafListNames = currentDataNode.getOptionalLeafListNames();
+ if (optionalLeafListNames.isPresent()) {
+ builder.addAll(optionalLeafListNames.get());
+ }
+ builder.add(leafListName);
+ final ImmutableSet leafListNames = builder.build();
+ currentDataNode.setOptionalLeafListNames(Optional.of(leafListNames));
+ final List leafListValues = new LinkedList();
+ for (final NormalizedNode normalizedNode : (Collection<NormalizedNode>) leafSetNode.getValue()) {
+ leafListValues.add(((ValueNode) normalizedNode).getValue());
+ }
+ addYangLeaf(currentDataNode, leafListName, leafListValues);
+ }
+
+ private void addDataNodeForEachListElement(final DataNode currentDataNode, final MapNode mapNode) {
+ final Collection<MapEntryNode> mapEntryNodes = mapNode.getValue();
+ for (final MapEntryNode mapEntryNode : mapEntryNodes) {
+ final String xpathChild = YangUtils.buildXpath(mapEntryNode.getIdentifier());
+ final DataNode childDataNode = createAndAddChildDataNode(currentDataNode, xpathChild);
+ addDataNodeFromNormalizedNode(childDataNode, mapEntryNode);
+ }
+ }
+
+ private DataNode createAndAddChildDataNode(final DataNode parentDataNode, final String childXpath) {
+ final DataNode newChildDataNode = new DataNodeBuilder().withXpath(xpath + childXpath)
+ .build();
+ final Set<DataNode> allChildDataNodes = new ImmutableSet.Builder<DataNode>()
+ .addAll(parentDataNode.getChildDataNodes())
+ .add(newChildDataNode)
+ .build();
+ parentDataNode.setChildDataNodes(allChildDataNodes);
+ return newChildDataNode;
+ }
+
+}
diff --git a/cps-service/src/main/java/org/onap/cps/utils/YangUtils.java b/cps-service/src/main/java/org/onap/cps/utils/YangUtils.java
index 8077ed7d88..1244d54afb 100644
--- a/cps-service/src/main/java/org/onap/cps/utils/YangUtils.java
+++ b/cps-service/src/main/java/org/onap/cps/utils/YangUtils.java
@@ -1,6 +1,7 @@
/*
* ============LICENSE_START=======================================================
* Copyright (C) 2020 Nordix Foundation
+ * Modifications Copyright (C) 2021 Bell Canada. All rights reserved.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -22,35 +23,26 @@ package org.onap.cps.utils;
import com.google.gson.stream.JsonReader;
import java.io.IOException;
import java.io.StringReader;
-import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;
import lombok.extern.slf4j.Slf4j;
-import org.onap.cps.api.impl.Fragment;
-import org.opendaylight.yangtools.yang.common.QName;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
-import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
-import org.opendaylight.yangtools.yang.data.api.schema.DataContainerNode;
-import org.opendaylight.yangtools.yang.data.api.schema.LeafSetNode;
-import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
-import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
-import org.opendaylight.yangtools.yang.data.api.schema.ValueNode;
import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
import org.opendaylight.yangtools.yang.data.codec.gson.JSONCodecFactory;
import org.opendaylight.yangtools.yang.data.codec.gson.JSONCodecFactorySupplier;
import org.opendaylight.yangtools.yang.data.codec.gson.JsonParserStream;
import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter;
import org.opendaylight.yangtools.yang.data.impl.schema.NormalizedNodeResult;
-import org.opendaylight.yangtools.yang.model.api.Module;
import org.opendaylight.yangtools.yang.model.api.SchemaContext;
@Slf4j
public class YangUtils {
+
private YangUtils() {
- throw new IllegalStateException("Utility class");
+ // Private constructor fo security reasons
}
/**
@@ -60,7 +52,7 @@ public class YangUtils {
* @param schemaContext the SchemaContext for the given data
* @return the NormalizedNode representing the json data
*/
- public static NormalizedNode<?, ?> parseJsonData(final String jsonData, final SchemaContext schemaContext)
+ public static NormalizedNode parseJsonData(final String jsonData, final SchemaContext schemaContext)
throws IOException {
final JSONCodecFactory jsonCodecFactory = JSONCodecFactorySupplier.DRAFT_LHOTKA_NETMOD_YANG_JSON_02
.getShared(schemaContext);
@@ -76,85 +68,23 @@ public class YangUtils {
}
/**
- * Break a Normalized Node tree into fragments that can be stored by the persistence service.
- *
- * @param tree the normalized node tree
- * @param module the module applicable for the data in the normalized node
- * @return the 'root' Fragment for the tree contain all relevant children etc.
+ * Create an xpath form a Yang Tools NodeIdentifier (i.e. PathArgument).
+ * @param nodeIdentifier the NodeIdentifier
+ * @return an xpath
*/
- public static Fragment fragmentNormalizedNode(
- final NormalizedNode<? extends YangInstanceIdentifier.PathArgument, ?> tree,
- final Module module) {
- final QName[] nodeTypes = {tree.getNodeType()};
- final String xpath = buildXpathId(tree.getIdentifier());
- final Fragment rootFragment = Fragment.createRootFragment(module, nodeTypes, xpath);
- fragmentNormalizedNode(rootFragment, tree);
- return rootFragment;
- }
-
- private static void fragmentNormalizedNode(final Fragment currentFragment,
- final NormalizedNode normalizedNode) {
- if (normalizedNode instanceof DataContainerNode) {
- inspectContainer(currentFragment, (DataContainerNode) normalizedNode);
- } else if (normalizedNode instanceof MapNode) {
- inspectKeyedList(currentFragment, (MapNode) normalizedNode);
- } else if (normalizedNode instanceof ValueNode) {
- inspectLeaf(currentFragment, (ValueNode) normalizedNode);
- } else if (normalizedNode instanceof LeafSetNode) {
- inspectLeafList(currentFragment, (LeafSetNode) normalizedNode);
- } else {
- log.warn("Cannot normalize {}", normalizedNode.getClass());
- }
- }
-
- private static void inspectLeaf(final Fragment currentFragment,
- final ValueNode valueNode) {
- final Object value = valueNode.getValue();
- currentFragment.addLeafValue(valueNode.getNodeType().getLocalName(), value);
- }
-
- private static void inspectLeafList(final Fragment currentFragment,
- final LeafSetNode leafSetNode) {
- currentFragment.addLeafListName(leafSetNode.getNodeType().getLocalName());
- for (final NormalizedNode value : (Collection<NormalizedNode>) leafSetNode.getValue()) {
- fragmentNormalizedNode(currentFragment, value);
- }
- }
-
- private static void inspectContainer(final Fragment currentFragment,
- final DataContainerNode dataContainerNode) {
- final Collection<NormalizedNode> leaves = (Collection) dataContainerNode.getValue();
- for (final NormalizedNode leaf : leaves) {
- fragmentNormalizedNode(currentFragment, leaf);
- }
- }
-
- private static void inspectKeyedList(final Fragment currentFragment,
- final MapNode mapNode) {
- createNodeForEachListElement(currentFragment, mapNode);
- }
-
- private static void createNodeForEachListElement(final Fragment currentFragment, final MapNode mapNode) {
- final Collection<MapEntryNode> mapEntryNodes = mapNode.getValue();
- for (final MapEntryNode mapEntryNode : mapEntryNodes) {
- final String xpathId = buildXpathId(mapEntryNode.getIdentifier());
- final Fragment listElementFragment =
- currentFragment.createChildFragment(mapNode.getNodeType(), xpathId);
- fragmentNormalizedNode(listElementFragment, mapEntryNode);
- }
- }
-
- private static String buildXpathId(final YangInstanceIdentifier.PathArgument nodeIdentifier) {
- final StringBuilder xpathIdBuilder = new StringBuilder();
- xpathIdBuilder.append("/").append(nodeIdentifier.getNodeType().getLocalName());
+ public static String buildXpath(final YangInstanceIdentifier.PathArgument nodeIdentifier) {
+ final StringBuilder xpathBuilder = new StringBuilder();
+ xpathBuilder.append("/").append(nodeIdentifier.getNodeType().getLocalName());
- if (nodeIdentifier instanceof NodeIdentifierWithPredicates) {
- xpathIdBuilder.append(getKeyAttributesStatement((NodeIdentifierWithPredicates) nodeIdentifier));
+ if (nodeIdentifier instanceof YangInstanceIdentifier.NodeIdentifierWithPredicates) {
+ xpathBuilder.append(getKeyAttributesStatement(
+ (YangInstanceIdentifier.NodeIdentifierWithPredicates) nodeIdentifier));
}
- return xpathIdBuilder.toString();
+ return xpathBuilder.toString();
}
- private static String getKeyAttributesStatement(final NodeIdentifierWithPredicates nodeIdentifier) {
+ private static String getKeyAttributesStatement(
+ final YangInstanceIdentifier.NodeIdentifierWithPredicates nodeIdentifier) {
final List<String> keyAttributes = nodeIdentifier.entrySet().stream().map(
entry -> {
final String name = entry.getKey().getLocalName();