+++ /dev/null
-/*
- * Copyright (c) 2016 Cisco Systems, Inc. and others. All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/epl-v10.html
- */
-
-package org.opendaylight.restconf.jersey.providers;
-
-import com.google.common.base.Splitter;
-import com.google.common.collect.ImmutableList;
-import java.io.IOException;
-import java.io.InputStream;
-import java.net.URI;
-import java.net.URISyntaxException;
-import java.util.ArrayList;
-import java.util.Iterator;
-import java.util.List;
-import javax.annotation.Nonnull;
-import javax.ws.rs.Consumes;
-import javax.ws.rs.WebApplicationException;
-import javax.ws.rs.ext.Provider;
-import javax.xml.parsers.ParserConfigurationException;
-import javax.xml.stream.XMLStreamException;
-import javax.xml.transform.dom.DOMSource;
-import org.opendaylight.netconf.sal.restconf.impl.InstanceIdentifierContext;
-import org.opendaylight.netconf.sal.restconf.impl.PatchContext;
-import org.opendaylight.netconf.sal.restconf.impl.PatchEditOperation;
-import org.opendaylight.netconf.sal.restconf.impl.PatchEntity;
-import org.opendaylight.netconf.sal.restconf.impl.RestconfDocumentedException;
-import org.opendaylight.netconf.sal.restconf.impl.RestconfError.ErrorTag;
-import org.opendaylight.netconf.sal.restconf.impl.RestconfError.ErrorType;
-import org.opendaylight.restconf.Rfc8040;
-import org.opendaylight.restconf.utils.RestconfConstants;
-import org.opendaylight.yangtools.util.xml.UntrustedXML;
-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.NormalizedNode;
-import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
-import org.opendaylight.yangtools.yang.data.codec.xml.XmlParserStream;
-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.ContainerSchemaNode;
-import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
-import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
-import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
-import org.opendaylight.yangtools.yang.model.api.Module;
-import org.opendaylight.yangtools.yang.model.api.SchemaNode;
-import org.opendaylight.yangtools.yang.model.util.SchemaContextUtil;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.w3c.dom.Document;
-import org.w3c.dom.Element;
-import org.w3c.dom.Node;
-import org.w3c.dom.NodeList;
-import org.xml.sax.SAXException;
-
-@Provider
-@Consumes({Rfc8040.MediaTypes.PATCH + RestconfConstants.XML})
-public class XmlToPatchBodyReader extends AbstractToPatchBodyReader {
- private static final Logger LOG = LoggerFactory.getLogger(XmlToPatchBodyReader.class);
- private static final Splitter SLASH_SPLITTER = Splitter.on('/');
-
- @SuppressWarnings("checkstyle:IllegalCatch")
- @Override
- protected PatchContext readBody(final InstanceIdentifierContext<?> path, final InputStream entityStream)
- throws IOException, WebApplicationException {
- try {
- final Document doc = UntrustedXML.newDocumentBuilder().parse(entityStream);
- return parse(path, doc);
- } catch (final RestconfDocumentedException e) {
- throw e;
- } catch (final Exception e) {
- LOG.debug("Error parsing xml input", e);
-
- throw new RestconfDocumentedException("Error parsing input: " + e.getMessage(), ErrorType.PROTOCOL,
- ErrorTag.MALFORMED_MESSAGE);
- }
- }
-
- private static PatchContext parse(final InstanceIdentifierContext<?> pathContext, final Document doc)
- throws XMLStreamException, IOException, ParserConfigurationException, SAXException, URISyntaxException {
- final List<PatchEntity> resultCollection = new ArrayList<>();
- final String patchId = doc.getElementsByTagName("patch-id").item(0).getFirstChild().getNodeValue();
- final NodeList editNodes = doc.getElementsByTagName("edit");
-
- for (int i = 0; i < editNodes.getLength(); i++) {
- DataSchemaNode schemaNode = (DataSchemaNode) pathContext.getSchemaNode();
- final Element element = (Element) editNodes.item(i);
- final String operation = element.getElementsByTagName("operation").item(0).getFirstChild().getNodeValue();
- final PatchEditOperation oper = PatchEditOperation.valueOf(operation.toUpperCase());
- final String editId = element.getElementsByTagName("edit-id").item(0).getFirstChild().getNodeValue();
- final String target = element.getElementsByTagName("target").item(0).getFirstChild().getNodeValue();
- final List<Element> values = readValueNodes(element, oper);
- final Element firstValueElement = values != null ? values.get(0) : null;
-
- // get namespace according to schema node from path context or value
- final String namespace = firstValueElement == null
- ? schemaNode.getQName().getNamespace().toString() : firstValueElement.getNamespaceURI();
-
- // find module according to namespace
- final Module module = pathContext.getSchemaContext().findModuleByNamespace(
- URI.create(namespace)).iterator().next();
-
- // initialize codec + set default prefix derived from module name
- final StringModuleInstanceIdentifierCodec codec = new StringModuleInstanceIdentifierCodec(
- pathContext.getSchemaContext(), module.getName());
-
- // find complete path to target and target schema node
- // target can be also empty (only slash)
- YangInstanceIdentifier targetII;
- final SchemaNode targetNode;
- if (target.equals("/")) {
- targetII = pathContext.getInstanceIdentifier();
- targetNode = pathContext.getSchemaContext();
- } else {
- targetII = codec.deserialize(codec.serialize(pathContext.getInstanceIdentifier())
- .concat(prepareNonCondXpath(schemaNode, target.replaceFirst("/", ""), firstValueElement,
- namespace, module.getQNameModule().getFormattedRevision())));
-
- targetNode = SchemaContextUtil.findDataSchemaNode(pathContext.getSchemaContext(),
- codec.getDataContextTree().getChild(targetII).getDataSchemaNode().getPath().getParent());
-
- // move schema node
- schemaNode = (DataSchemaNode) SchemaContextUtil.findDataSchemaNode(pathContext.getSchemaContext(),
- codec.getDataContextTree().getChild(targetII).getDataSchemaNode().getPath());
- }
-
- if (targetNode == null) {
- LOG.debug("Target node {} not found in path {} ", target, pathContext.getSchemaNode());
- throw new RestconfDocumentedException("Error parsing input", ErrorType.PROTOCOL,
- ErrorTag.MALFORMED_MESSAGE);
- }
-
- if (oper.isWithValue()) {
- final NormalizedNode<?, ?> parsed;
- if (schemaNode instanceof ContainerSchemaNode || schemaNode instanceof ListSchemaNode) {
- final NormalizedNodeResult resultHolder = new NormalizedNodeResult();
- final NormalizedNodeStreamWriter writer = ImmutableNormalizedNodeStreamWriter.from(resultHolder);
- final XmlParserStream xmlParser = XmlParserStream.create(writer, pathContext.getSchemaContext(),
- schemaNode);
- xmlParser.traverse(new DOMSource(firstValueElement));
- parsed = resultHolder.getResult();
- } else {
- parsed = null;
- }
-
- // for lists allow to manipulate with list items through their parent
- if (targetII.getLastPathArgument() instanceof NodeIdentifierWithPredicates) {
- targetII = targetII.getParent();
- }
-
- resultCollection.add(new PatchEntity(editId, oper, targetII, parsed));
- } else {
- resultCollection.add(new PatchEntity(editId, oper, targetII));
- }
- }
-
- return new PatchContext(pathContext, ImmutableList.copyOf(resultCollection), patchId);
- }
-
- /**
- * Read value nodes.
- *
- * @param element Element of current edit operation
- * @param operation Name of current operation
- * @return List of value elements
- */
- private static List<Element> readValueNodes(@Nonnull final Element element,
- @Nonnull final PatchEditOperation operation) {
- final Node valueNode = element.getElementsByTagName("value").item(0);
-
- if (operation.isWithValue() && valueNode == null) {
- throw new RestconfDocumentedException("Error parsing input",
- ErrorType.PROTOCOL, ErrorTag.MALFORMED_MESSAGE);
- }
-
- if (!operation.isWithValue() && valueNode != null) {
- throw new RestconfDocumentedException("Error parsing input",
- ErrorType.PROTOCOL, ErrorTag.MALFORMED_MESSAGE);
- }
-
- if (valueNode == null) {
- return null;
- }
-
- final List<Element> result = new ArrayList<>();
- final NodeList childNodes = valueNode.getChildNodes();
- for (int i = 0; i < childNodes.getLength(); i++) {
- if (childNodes.item(i) instanceof Element) {
- result.add((Element) childNodes.item(i));
- }
- }
-
- return result;
- }
-
- /**
- * Prepare non-conditional XPath suitable for deserialization with {@link StringModuleInstanceIdentifierCodec}.
- *
- * @param schemaNode Top schema node
- * @param target Edit operation target
- * @param value Element with value
- * @param namespace Module namespace
- * @param revision Module revision
- * @return Non-conditional XPath
- */
- private static String prepareNonCondXpath(@Nonnull final DataSchemaNode schemaNode, @Nonnull final String target,
- @Nonnull final Element value, @Nonnull final String namespace, @Nonnull final String revision) {
- final Iterator<String> args = SLASH_SPLITTER.split(target.substring(target.indexOf(':') + 1)).iterator();
-
- final StringBuilder nonCondXpath = new StringBuilder();
- SchemaNode childNode = schemaNode;
-
- while (args.hasNext()) {
- final String s = args.next();
- nonCondXpath.append("/");
- nonCondXpath.append(s);
- childNode = ((DataNodeContainer) childNode).getDataChildByName(QName.create(namespace, revision, s));
-
- if (childNode instanceof ListSchemaNode && args.hasNext()) {
- appendKeys(nonCondXpath, ((ListSchemaNode) childNode).getKeyDefinition().iterator(), args);
- }
- }
-
- if (childNode instanceof ListSchemaNode && value != null) {
- final Iterator<String> keyValues = readKeyValues(value,
- ((ListSchemaNode) childNode).getKeyDefinition().iterator());
- appendKeys(nonCondXpath, ((ListSchemaNode) childNode).getKeyDefinition().iterator(), keyValues);
- }
-
- return nonCondXpath.toString();
- }
-
- /**
- * Read value for every list key.
- *
- * @param value Value element
- * @param keys Iterator of list keys names
- * @return Iterator of list keys values
- */
- private static Iterator<String> readKeyValues(@Nonnull final Element value, @Nonnull final Iterator<QName> keys) {
- final List<String> result = new ArrayList<>();
-
- while (keys.hasNext()) {
- result.add(value.getElementsByTagName(keys.next().getLocalName()).item(0).getFirstChild().getNodeValue());
- }
-
- return result.iterator();
- }
-
- /**
- * Append key name - key value pairs for every list key to {@code nonCondXpath}.
- *
- * @param nonCondXpath Builder for creating non-conditional XPath
- * @param keyNames Iterator of list keys names
- * @param keyValues Iterator of list keys values
- */
- private static void appendKeys(@Nonnull final StringBuilder nonCondXpath, @Nonnull final Iterator<QName> keyNames,
- @Nonnull final Iterator<String> keyValues) {
- while (keyNames.hasNext()) {
- nonCondXpath.append('[');
- nonCondXpath.append(keyNames.next().getLocalName());
- nonCondXpath.append("='");
- nonCondXpath.append(keyValues.next());
- nonCondXpath.append("']");
- }
- }
-}
Code Review / netconf.git / blobdiff