diff options
Diffstat (limited to 'cps-service/src/main/java/org/onap/cps/utils/YangUtils.java')
| -rw-r--r-- | cps-service/src/main/java/org/onap/cps/utils/YangUtils.java | 246 |
1 files changed, 185 insertions, 61 deletions
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 48241ed39..c0dfe5205 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 @@ -3,6 +3,8 @@ * Copyright (C) 2020-2022 Nordix Foundation * Modifications Copyright (C) 2021 Bell Canada. * Modifications Copyright (C) 2021 Pantheon.tech + * Modifications Copyright (C) 2022 TechMahindra Ltd. + * Modifications Copyright (C) 2022 Deutsche Telekom AG * ================================================================================ * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -26,24 +28,40 @@ import com.google.gson.JsonSyntaxException; import com.google.gson.stream.JsonReader; import java.io.IOException; import java.io.StringReader; +import java.net.URISyntaxException; import java.util.ArrayList; -import java.util.Arrays; import java.util.Collection; import java.util.Collections; +import java.util.HashMap; +import java.util.Iterator; import java.util.List; +import java.util.Map; import java.util.Optional; import java.util.stream.Collectors; +import javax.xml.parsers.ParserConfigurationException; +import javax.xml.stream.XMLInputFactory; +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; +import javax.xml.transform.TransformerException; import lombok.AccessLevel; import lombok.NoArgsConstructor; import lombok.extern.slf4j.Slf4j; +import org.onap.cps.cpspath.parser.CpsPathUtil; +import org.onap.cps.cpspath.parser.PathParsingException; import org.onap.cps.spi.exceptions.DataValidationException; import org.opendaylight.yangtools.yang.common.QName; import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier; +import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode; +import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild; +import org.opendaylight.yangtools.yang.data.api.schema.LeafNode; import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode; +import org.opendaylight.yangtools.yang.data.api.schema.builder.DataContainerNodeBuilder; 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.codec.xml.XmlParserStream; +import org.opendaylight.yangtools.yang.data.impl.schema.Builders; 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.DataNodeContainer; @@ -53,101 +71,191 @@ import org.opendaylight.yangtools.yang.model.api.EffectiveStatementInference; import org.opendaylight.yangtools.yang.model.api.SchemaContext; import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier; import org.opendaylight.yangtools.yang.model.util.SchemaInferenceStack; +import org.xml.sax.SAXException; @Slf4j @NoArgsConstructor(access = AccessLevel.PRIVATE) public class YangUtils { - private static final String XPATH_DELIMITER_REGEX = "\\/"; - private static final String XPATH_NODE_KEY_ATTRIBUTES_REGEX = "\\[.*?\\]"; + public static final String DATA_ROOT_NODE_NAMESPACE = "urn:ietf:params:xml:ns:netconf:base:1.0"; + public static final String DATA_ROOT_NODE_TAG_NAME = "data"; /** - * Parses jsonData into NormalizedNode according to given schema context. + * Parses data into Collection of NormalizedNode according to given schema context. * - * @param jsonData json data as string + * @param nodeData data string + * @param schemaContext schema context describing associated data model + * @return the NormalizedNode object + */ + public static ContainerNode parseData(final ContentType contentType, + final String nodeData, + final SchemaContext schemaContext) { + if (contentType == ContentType.JSON) { + return parseJsonDataWithOptionalParent(nodeData, schemaContext, Optional.empty()); + } + return parseXmlDataWithOptionalParent(nodeData, schemaContext, Optional.empty()); + } + + /** + * Parses data into NormalizedNode according to given schema context. + * + * @param nodeData data string * @param schemaContext schema context describing associated data model * @return the NormalizedNode object */ - public static NormalizedNode parseJsonData(final String jsonData, final SchemaContext schemaContext) { - return parseJsonData(jsonData, schemaContext, Optional.empty()); + public static ContainerNode parseData(final ContentType contentType, + final String nodeData, + final SchemaContext schemaContext, + final String parentNodeXpath) { + if (contentType == ContentType.JSON) { + return parseJsonDataWithOptionalParent(nodeData, schemaContext, Optional.of(parentNodeXpath)); + } + return parseXmlDataWithOptionalParent(nodeData, schemaContext, Optional.of(parentNodeXpath)); } /** - * Parses jsonData into NormalizedNode according to given schema context. + * Parses data into Collection of NormalizedNode according to given schema context. + * + * @param jsonData json data as string + * @param schemaContext schema context describing associated data model + * @return the Collection of NormalizedNode object + */ + public static ContainerNode parseJsonData(final String jsonData, final SchemaContext schemaContext) { + return parseJsonDataWithOptionalParent(jsonData, schemaContext, Optional.empty()); + } + + /** + * Parses jsonData into Collection of NormalizedNode according to given schema context. * * @param jsonData json data fragment as string * @param schemaContext schema context describing associated data model * @param parentNodeXpath the xpath referencing the parent node current data fragment belong to * @return the NormalizedNode object */ - public static NormalizedNode parseJsonData(final String jsonData, final SchemaContext schemaContext, - final String parentNodeXpath) { - final Collection<QName> dataSchemaNodeIdentifiers = - getDataSchemaNodeIdentifiersByXpath(parentNodeXpath, schemaContext); - return parseJsonData(jsonData, schemaContext, Optional.of(dataSchemaNodeIdentifiers)); + public static ContainerNode parseJsonData(final String jsonData, + final SchemaContext schemaContext, + final String parentNodeXpath) { + return parseJsonDataWithOptionalParent(jsonData, schemaContext, Optional.of(parentNodeXpath)); + } + + /** + * Create an xpath form a Yang Tools NodeIdentifier (i.e. PathArgument). + * + * @param nodeIdentifier the NodeIdentifier + * @return a xpath + */ + public static String buildXpath(final YangInstanceIdentifier.PathArgument nodeIdentifier) { + final StringBuilder xpathBuilder = new StringBuilder(); + xpathBuilder.append("/").append(nodeIdentifier.getNodeType().getLocalName()); + + if (nodeIdentifier instanceof YangInstanceIdentifier.NodeIdentifierWithPredicates) { + xpathBuilder.append(getKeyAttributesStatement( + (YangInstanceIdentifier.NodeIdentifierWithPredicates) nodeIdentifier)); + } + return xpathBuilder.toString(); } - private static NormalizedNode parseJsonData(final String jsonData, final SchemaContext schemaContext, - final Optional<Collection<QName>> dataSchemaNodeIdentifiers) { + private static ContainerNode parseJsonDataWithOptionalParent(final String jsonData, + final SchemaContext schemaContext, + final Optional<String> parentNodeXpath) { final JSONCodecFactory jsonCodecFactory = JSONCodecFactorySupplier.DRAFT_LHOTKA_NETMOD_YANG_JSON_02 .getShared((EffectiveModelContext) schemaContext); - final NormalizedNodeResult normalizedNodeResult = new NormalizedNodeResult(); + final DataContainerNodeBuilder<YangInstanceIdentifier.NodeIdentifier, ContainerNode> dataContainerNodeBuilder = + Builders.containerBuilder() + .withNodeIdentifier(new YangInstanceIdentifier.NodeIdentifier( + QName.create(DATA_ROOT_NODE_NAMESPACE, DATA_ROOT_NODE_TAG_NAME) + )); final NormalizedNodeStreamWriter normalizedNodeStreamWriter = ImmutableNormalizedNodeStreamWriter - .from(normalizedNodeResult); + .from(dataContainerNodeBuilder); final JsonReader jsonReader = new JsonReader(new StringReader(jsonData)); final JsonParserStream jsonParserStream; - if (dataSchemaNodeIdentifiers.isPresent()) { + if (parentNodeXpath.isPresent()) { + final Collection<QName> dataSchemaNodeIdentifiers + = getDataSchemaNodeIdentifiers(schemaContext, parentNodeXpath.get()); final EffectiveModelContext effectiveModelContext = ((EffectiveModelContext) schemaContext); final EffectiveStatementInference effectiveStatementInference = SchemaInferenceStack.of(effectiveModelContext, - SchemaNodeIdentifier.Absolute.of(dataSchemaNodeIdentifiers.get())).toInference(); + SchemaNodeIdentifier.Absolute.of(dataSchemaNodeIdentifiers)).toInference(); jsonParserStream = JsonParserStream.create(normalizedNodeStreamWriter, jsonCodecFactory, effectiveStatementInference); } else { jsonParserStream = JsonParserStream.create(normalizedNodeStreamWriter, jsonCodecFactory); } - try { + try (jsonParserStream) { jsonParserStream.parse(jsonReader); - jsonParserStream.close(); - } catch (final JsonSyntaxException exception) { + } catch (final IOException | JsonSyntaxException exception) { throw new DataValidationException( - "Failed to parse json data: " + jsonData, exception.getMessage(), exception); - } catch (final IOException | IllegalStateException illegalStateException) { + "Failed to parse json data: " + jsonData, exception.getMessage(), exception); + } catch (final IllegalStateException | IllegalArgumentException exception) { throw new DataValidationException( - "Failed to parse json data. Unsupported xpath or json data:" + jsonData, illegalStateException - .getMessage(), illegalStateException); + "Failed to parse json data. Unsupported xpath or json data:" + jsonData, exception + .getMessage(), exception); } - return normalizedNodeResult.getResult(); + return dataContainerNodeBuilder.build(); } - /** - * Create an xpath form a Yang Tools NodeIdentifier (i.e. PathArgument). - * - * @param nodeIdentifier the NodeIdentifier - * @return an xpath - */ - public static String buildXpath(final YangInstanceIdentifier.PathArgument nodeIdentifier) { - final StringBuilder xpathBuilder = new StringBuilder(); - xpathBuilder.append("/").append(nodeIdentifier.getNodeType().getLocalName()); + private static ContainerNode parseXmlDataWithOptionalParent(final String xmlData, + final SchemaContext schemaContext, + final Optional<String> parentNodeXpath) { + final XMLInputFactory factory = XMLInputFactory.newInstance(); + factory.setProperty(XMLInputFactory.SUPPORT_DTD, false); + final NormalizedNodeResult normalizedNodeResult = new NormalizedNodeResult(); + final NormalizedNodeStreamWriter normalizedNodeStreamWriter = ImmutableNormalizedNodeStreamWriter + .from(normalizedNodeResult); - if (nodeIdentifier instanceof YangInstanceIdentifier.NodeIdentifierWithPredicates) { - xpathBuilder.append(getKeyAttributesStatement( - (YangInstanceIdentifier.NodeIdentifierWithPredicates) nodeIdentifier)); + final EffectiveModelContext effectiveModelContext = (EffectiveModelContext) schemaContext; + final XmlParserStream xmlParserStream; + final String preparedXmlContent; + try { + if (parentNodeXpath.isPresent()) { + final DataSchemaNode parentSchemaNode = + (DataSchemaNode) getDataSchemaNodeAndIdentifiersByXpath(parentNodeXpath.get(), schemaContext) + .get("dataSchemaNode"); + final Collection<QName> dataSchemaNodeIdentifiers = + getDataSchemaNodeIdentifiers(schemaContext, parentNodeXpath.get()); + final EffectiveStatementInference effectiveStatementInference = + SchemaInferenceStack.of(effectiveModelContext, + SchemaNodeIdentifier.Absolute.of(dataSchemaNodeIdentifiers)).toInference(); + preparedXmlContent = XmlFileUtils.prepareXmlContent(xmlData, parentSchemaNode, parentNodeXpath.get()); + xmlParserStream = XmlParserStream.create(normalizedNodeStreamWriter, effectiveStatementInference); + } else { + preparedXmlContent = XmlFileUtils.prepareXmlContent(xmlData, schemaContext); + xmlParserStream = XmlParserStream.create(normalizedNodeStreamWriter, effectiveModelContext); + } + + try (xmlParserStream; + StringReader stringReader = new StringReader(preparedXmlContent)) { + final XMLStreamReader xmlStreamReader = factory.createXMLStreamReader(stringReader); + xmlParserStream.parse(xmlStreamReader); + } + } catch (final XMLStreamException | URISyntaxException | IOException | SAXException | NullPointerException + | ParserConfigurationException | TransformerException exception) { + throw new DataValidationException( + "Failed to parse xml data: " + xmlData, exception.getMessage(), exception); } - return xpathBuilder.toString(); + final DataContainerChild dataContainerChild = + (DataContainerChild) getFirstChildXmlRoot(normalizedNodeResult.getResult()); + final YangInstanceIdentifier.NodeIdentifier nodeIdentifier = + new YangInstanceIdentifier.NodeIdentifier(dataContainerChild.getIdentifier().getNodeType()); + return Builders.containerBuilder().withChild(dataContainerChild).withNodeIdentifier(nodeIdentifier).build(); } + private static Collection<QName> getDataSchemaNodeIdentifiers(final SchemaContext schemaContext, + final String parentNodeXpath) { + return (Collection<QName>) getDataSchemaNodeAndIdentifiersByXpath(parentNodeXpath, schemaContext) + .get("dataSchemaNodeIdentifiers"); + } private static String getKeyAttributesStatement( - final YangInstanceIdentifier.NodeIdentifierWithPredicates nodeIdentifier) { + final YangInstanceIdentifier.NodeIdentifierWithPredicates nodeIdentifier) { final List<String> keyAttributes = nodeIdentifier.entrySet().stream().map( - entry -> { - final String name = entry.getKey().getLocalName(); - final String value = String.valueOf(entry.getValue()).replace("'", "\\'"); - return String.format("@%s='%s'", name, value); - } + entry -> { + final String name = entry.getKey().getLocalName(); + final String value = String.valueOf(entry.getValue()).replace("'", "\\'"); + return String.format("@%s='%s'", name, value); + } ).collect(Collectors.toList()); if (keyAttributes.isEmpty()) { @@ -158,26 +266,23 @@ public class YangUtils { } } - private static Collection<QName> getDataSchemaNodeIdentifiersByXpath(final String parentNodeXpath, - final SchemaContext schemaContext) { + private static Map<String, Object> getDataSchemaNodeAndIdentifiersByXpath(final String parentNodeXpath, + final SchemaContext schemaContext) { final String[] xpathNodeIdSequence = xpathToNodeIdSequence(parentNodeXpath); - return findDataSchemaNodeIdentifiersByXpathNodeIdSequence(xpathNodeIdSequence, schemaContext.getChildNodes(), + return findDataSchemaNodeAndIdentifiersByXpathNodeIdSequence(xpathNodeIdSequence, schemaContext.getChildNodes(), new ArrayList<>()); } private static String[] xpathToNodeIdSequence(final String xpath) { - final String[] xpathNodeIdSequence = Arrays.stream(xpath - .replaceAll(XPATH_NODE_KEY_ATTRIBUTES_REGEX, "") - .split(XPATH_DELIMITER_REGEX)) - .filter(identifier -> !identifier.isEmpty()) - .toArray(String[]::new); - if (xpathNodeIdSequence.length < 1) { - throw new DataValidationException("Invalid xpath.", "Xpath contains no node identifiers."); + try { + return CpsPathUtil.getXpathNodeIdSequence(xpath); + } catch (final PathParsingException pathParsingException) { + throw new DataValidationException(pathParsingException.getMessage(), pathParsingException.getDetails(), + pathParsingException); } - return xpathNodeIdSequence; } - private static Collection<QName> findDataSchemaNodeIdentifiersByXpathNodeIdSequence( + private static Map<String, Object> findDataSchemaNodeAndIdentifiersByXpathNodeIdSequence( final String[] xpathNodeIdSequence, final Collection<? extends DataSchemaNode> dataSchemaNodes, final Collection<QName> dataSchemaNodeIdentifiers) { @@ -187,11 +292,15 @@ public class YangUtils { .findFirst().orElseThrow(() -> schemaNodeNotFoundException(currentXpathNodeId)); dataSchemaNodeIdentifiers.add(currentDataSchemaNode.getQName()); if (xpathNodeIdSequence.length <= 1) { - return dataSchemaNodeIdentifiers; + final Map<String, Object> dataSchemaNodeAndIdentifiers = + new HashMap<>(); + dataSchemaNodeAndIdentifiers.put("dataSchemaNode", currentDataSchemaNode); + dataSchemaNodeAndIdentifiers.put("dataSchemaNodeIdentifiers", dataSchemaNodeIdentifiers); + return dataSchemaNodeAndIdentifiers; } if (currentDataSchemaNode instanceof DataNodeContainer) { - return findDataSchemaNodeIdentifiersByXpathNodeIdSequence( - getNextLevelXpathNodeIdSequence(xpathNodeIdSequence), + return findDataSchemaNodeAndIdentifiersByXpathNodeIdSequence( + getNextLevelXpathNodeIdSequence(xpathNodeIdSequence), ((DataNodeContainer) currentDataSchemaNode).getChildNodes(), dataSchemaNodeIdentifiers); } @@ -208,4 +317,19 @@ public class YangUtils { return new DataValidationException("Invalid xpath.", String.format("No schema node was found for xpath identifier '%s'.", schemaNodeIdentifier)); } + + private static NormalizedNode getFirstChildXmlRoot(final NormalizedNode parent) { + final String rootNodeType = parent.getIdentifier().getNodeType().getLocalName(); + final Collection<DataContainerChild> children = (Collection<DataContainerChild>) parent.body(); + final Iterator<DataContainerChild> iterator = children.iterator(); + NormalizedNode child = null; + while (iterator.hasNext()) { + child = iterator.next(); + if (!child.getIdentifier().getNodeType().getLocalName().equals(rootNodeType) + && !(child instanceof LeafNode)) { + return child; + } + } + return getFirstChildXmlRoot(child); + } } |