--- /dev/null
+/*-
+ * ============LICENSE_START=======================================================
+ * MODEL LOADER SERVICE
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. 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=========================================================
+ */
+
+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.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.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 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-name-version-id";
+
+ private static Logger logger = LoggerFactory.getInstance()
+ .getLogger(ModelArtifactParser.class.getName());
+
+ /**
+ * This method parses the given artifact payload in byte array format and
+ * generates a list of model artifacts according to the content.
+ *
+ * @param artifactPayload
+ * artifact content to be parsed
+ * @param artifactName
+ * name of the artifact
+ * @return a list of model artifacts
+ */
+ 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) {
+ modelList.add(model);
+ } else {
+ // TODO: A WARN message?
+ logger.info(ModelLoaderMsgs.DISTRIBUTION_EVENT,
+ "Unable to parse artifact " + artifactName);
+ }
+ } 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 {
+ // TODO: A WARN message?
+ logger.info(ModelLoaderMsgs.DISTRIBUTION_EVENT,
+ "Unable to parse artifact " + artifactName);
+ modelList.clear();
+ break;
+ }
+ }
+ }
+ }
+ } catch (Exception ex) {
+ // This may not be an error. We may be receiving an artifact that is
+ // unrelated
+ // to models. In this case, we just ignore it.
+ // TODO: A WARN message?
+ logger.info(ModelLoaderMsgs.DISTRIBUTION_EVENT,
+ "Unable to parse artifact " + artifactName + ": " + ex.getLocalizedMessage());
+ }
+
+ return modelList;
+ }
+
+ private ModelArtifact parseModel(Node modelNode, String payload) {
+ ModelArtifact model = new ModelArtifact();
+ model.setPayload(payload);
+
+ if (modelNode.getNodeName().equalsIgnoreCase(MODEL_ELEMENT)) {
+ model.setType(ArtifactType.MODEL);
+ } else {
+ model.setType(ArtifactType.NAMED_QUERY);
+ }
+
+ parseNode(modelNode, model);
+
+ if (model.getNameVersionId() == null) {
+ return null;
+ }
+
+ return model;
+ }
+
+ private void parseNode(Node node, ModelArtifact model) {
+ if (node.getNodeName().equalsIgnoreCase(MODEL_NAME_VERSION_ID)) {
+ model.setNameVersionId(node.getTextContent().trim());
+ } else if (node.getNodeName().equalsIgnoreCase(NAMED_QUERY_VERSION_ID)) {
+ model.setNameVersionId(node.getTextContent().trim());
+ } else if (node.getNodeName().equalsIgnoreCase(RELATIONSHIP_DATA)) {
+ parseRelationshipNode(node, model);
+ } else {
+ 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) {
+ String key = null;
+ String value = 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();
+ } else if (childNode.getNodeName().equalsIgnoreCase(RELATIONSHIP_VALUE)) {
+ value = childNode.getTextContent().trim();
+ }
+ }
+
+ if ((key != null) && (key.equalsIgnoreCase(MODEL_ELEMENT_RELATIONSHIP_KEY))) {
+ if (value != null) {
+ model.addDependentModelId(value);
+ }
+ }
+ }
+
+ private String nodeToString(Node node) throws TransformerException {
+ StringWriter sw = new StringWriter();
+ Transformer transfomer = TransformerFactory.newInstance().newTransformer();
+ transfomer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
+ transfomer.transform(new DOMSource(node), new StreamResult(sw));
+ return sw.toString();
+ }
+}
Code Review / aai / model-loader.git / blobdiff