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/**
* ============LICENSE_START=======================================================
* Model Loader
* ================================================================================
* Copyright © 2017 AT&T Intellectual Property.
* Copyright © 2017 Amdocs
* 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.
* ============LICENSE_END=========================================================
*
* ECOMP and OpenECOMP are trademarks
* and service marks of AT&T Intellectual Property.
*/
package org.openecomp.modelloader.entity.model;
import org.openecomp.cl.api.Logger;
import org.openecomp.cl.eelf.LoggerFactory;
import org.openecomp.modelloader.entity.Artifact;
import org.openecomp.modelloader.entity.ArtifactType;
import org.openecomp.modelloader.service.ModelLoaderMsgs;
import org.openecomp.modelloader.util.JsonXmlConverter;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.List;
import javax.xml.XMLConstants;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
public class ModelArtifactParser {
private static String MODELS_ELEMENT = "models";
private static String MODEL_ELEMENT = "model";
private static String NAMED_QUERIES_ELEMENT = "named-queries";
private static String NAMED_QUERY_ELEMENT = "named-query";
private static String MODEL_NAME_VERSION_ID = "model-name-version-id";
private static String MODEL_VER = "model-ver";
private static String MODEL_VERSION_ID = "model-version-id";
private static String MODEL_INVARIANT_ID = "model-invariant-id";
private static String NAMED_QUERY_VERSION_ID = "named-query-uuid";
private static String RELATIONSHIP_DATA = "relationship-data";
private static String RELATIONSHIP_KEY = "relationship-key";
private static String RELATIONSHIP_VALUE = "relationship-value";
private static String MODEL_ELEMENT_RELATIONSHIP_KEY = "model.model-invariant-id";
private static String MODEL_VER_ELEMENT_RELATIONSHIP_KEY = "model-ver.model-version-id";
private static Logger logger = LoggerFactory.getInstance().getLogger(ModelArtifactParser.class.getName());
public List<Artifact> parse(byte[] artifactPayload, String artifactName) {
String payload = new String(artifactPayload);
List<Artifact> modelList = new ArrayList<Artifact>();
try {
// Artifact could be JSON or XML
if (JsonXmlConverter.isValidJson(payload)) {
payload = JsonXmlConverter.convertJsonToXml(payload);
}
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
InputSource is = new InputSource(new StringReader(payload));
Document doc = builder.parse(is);
if ( (doc.getDocumentElement().getNodeName().equalsIgnoreCase(MODEL_ELEMENT)) ||
(doc.getDocumentElement().getNodeName().equalsIgnoreCase(NAMED_QUERY_ELEMENT)) ) {
ModelArtifact model = parseModel(doc.getDocumentElement(), payload);
if (model != null) {
if ( ArtifactType.MODEL.equals(model.getType())) {
logger.info( ModelLoaderMsgs.DISTRIBUTION_EVENT, "Model parsed =====>>>> "
+ "Model-invariant-Id: "+ model.getModelInvariantId()
+ " Model-Version-Id: "+ model.getModelVerId());
}
modelList.add(model);
}
else {
logger.error(ModelLoaderMsgs.ARTIFACT_PARSE_ERROR, "Unable to parse artifact " + artifactName);
return null;
}
}
else if ( (doc.getDocumentElement().getNodeName().equalsIgnoreCase(MODELS_ELEMENT)) ||
(doc.getDocumentElement().getNodeName().equalsIgnoreCase(NAMED_QUERIES_ELEMENT)) ) {
// The complete set of models/named-queries were contained in this artifact
NodeList nodeList = doc.getDocumentElement().getChildNodes();
for (int i = 0; i < nodeList.getLength(); i++) {
Node childNode = nodeList.item(i);
if ( (childNode.getNodeName().equalsIgnoreCase(MODEL_ELEMENT)) ||
(childNode.getNodeName().equalsIgnoreCase(NAMED_QUERY_ELEMENT)) ) {
String modelPayload = nodeToString(childNode);
ModelArtifact model = parseModel(childNode, modelPayload);
if (model != null) {
modelList.add(model);
}
else {
logger.error(ModelLoaderMsgs.ARTIFACT_PARSE_ERROR, "Unable to parse artifact " + artifactName);
modelList.clear();
break;
}
}
}
}
}
catch (Exception ex) {
logger.error(ModelLoaderMsgs.ARTIFACT_PARSE_ERROR, "Unable to parse artifact " + artifactName + ": " + ex.getLocalizedMessage());
}
return modelList;
}
private void printDetails(Node modelVer) throws TransformerException {
logger.info(ModelLoaderMsgs.DISTRIBUTION_EVENT, nodeToString(modelVer));
}
private ModelArtifact parseModel(Node modelNode, String payload) {
ModelArtifact model = new ModelArtifact();
model.setPayload(payload);
if (modelNode.getNodeName().equalsIgnoreCase(MODEL_ELEMENT)) {
//compare with Model-ver
model.setType(ArtifactType.MODEL);
}
else {
model.setType(ArtifactType.NAMED_QUERY);
}
Element e = (Element)modelNode;
model.setModelNamespace(e.getAttribute("xmlns"));
parseNode(modelNode, model);
if (model.getModelInvariantId() == null && model.getNameVersionId() == null) {
return null;
}
return model;
}
private void parseNode(Node node, ModelArtifact model) {
if(node.getNodeName().equalsIgnoreCase(MODEL_NAME_VERSION_ID)){
model.setModelVerId(node.getTextContent().trim());
model.setV9Artifact(false);
}
else if(node.getNodeName().equalsIgnoreCase("model-id")){
model.setModelInvariantId(node.getTextContent().trim());
model.setV9Artifact(false);
}
else if (node.getNodeName().equalsIgnoreCase(MODEL_INVARIANT_ID)) {
model.setModelInvariantId(node.getTextContent().trim());
}
else if (node.getNodeName().equalsIgnoreCase(MODEL_VERSION_ID)) {
model.setModelVerId(node.getTextContent().trim());
//Change to Model Invariant Id
}
else if (node.getNodeName().equalsIgnoreCase(NAMED_QUERY_VERSION_ID)) {
model.setNameVersionId(node.getTextContent().trim());
}
else if (node.getNodeName().equalsIgnoreCase(RELATIONSHIP_DATA)) {
parseRelationshipNode(node, model);
if(model.getModelModelInvariantId()!=null && model.getModelVerModelVersionId()!=null && !model.getModelModelInvariantId().isEmpty() && !model.getModelVerModelVersionId().isEmpty()){
model.addDependentModelId(model.getModelModelInvariantId() + "|" + model.getModelVerModelVersionId());
model.setModelModelInvariantId("");
model.setModelVerModelVersionId("");
}
}
else {
if (node.getNodeName().equalsIgnoreCase(MODEL_VER)) {
model.setModelVer(node);
if ( (model.getModelNamespace() != null) && (!model.getModelNamespace().isEmpty()) ) {
Element e = (Element) node;
e.setAttributeNS(XMLConstants.XMLNS_ATTRIBUTE_NS_URI, "xmlns", model.getModelNamespace());
System.out.println("Setting NS: " + e.getAttribute("xmlns"));
}
}
NodeList nodeList = node.getChildNodes();
for (int i = 0; i < nodeList.getLength(); i++) {
Node childNode = nodeList.item(i);
parseNode(childNode, model);
}
}
}
private void parseRelationshipNode(Node node, ModelArtifact model) {
//invariant-id comes before model-version-id .. create a list of values
String key = null;
String value = null;
String modelVersionIdKey=null;
String modelInvariantIdIdKey=null;
String modelVersionIdValue=null;
String modelInvariantIdIdValue=null;
NodeList nodeList = node.getChildNodes();
for (int i = 0; i < nodeList.getLength(); i++) {
Node childNode = nodeList.item(i);
if (childNode.getNodeName().equalsIgnoreCase(RELATIONSHIP_KEY)) {
key = childNode.getTextContent().trim();
if(key.equalsIgnoreCase(MODEL_VER_ELEMENT_RELATIONSHIP_KEY)){
modelVersionIdKey = key;
}
else if(key.equalsIgnoreCase(MODEL_ELEMENT_RELATIONSHIP_KEY)){
modelInvariantIdIdKey = key;
}
}
else if (childNode.getNodeName().equalsIgnoreCase(RELATIONSHIP_VALUE)) {
value = childNode.getTextContent().trim();
if(modelVersionIdKey!=null){
modelVersionIdValue = value;
model.setModelVerModelVersionId(modelVersionIdValue);
}
else if(modelInvariantIdIdKey!=null){
modelInvariantIdIdValue = value;
model.setModelModelInvariantId(modelInvariantIdIdValue);
}
}
}
if ( (key != null) && (key.equalsIgnoreCase(MODEL_ELEMENT_RELATIONSHIP_KEY )) &&
(model.isV9Artifact == false ||ArtifactType.NAMED_QUERY.equals(model.getType())) ) {
if (value != null) {
model.addDependentModelId(value);
}
}
}
private String nodeToString(Node node) throws TransformerException {
StringWriter sw = new StringWriter();
Transformer t = TransformerFactory.newInstance().newTransformer();
t.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
t.transform(new DOMSource(node), new StreamResult(sw));
return sw.toString();
}
}
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