2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
21 package org.onap.sdc.generator.aai;
23 import org.onap.sdc.generator.aai.model.Resource;
24 import org.onap.sdc.generator.aai.model.Service;
25 import org.onap.sdc.generator.aai.model.Widget;
26 import org.onap.sdc.generator.aai.xml.*;
27 import org.onap.sdc.generator.logging.annotations.Metrics;
28 import org.openecomp.sdc.logging.api.Logger;
29 import org.openecomp.sdc.logging.api.LoggerFactory;
30 import org.w3c.dom.DOMException;
32 import javax.xml.bind.JAXBContext;
33 import javax.xml.bind.JAXBException;
34 import javax.xml.bind.Marshaller;
35 import java.io.StringWriter;
36 import java.util.List;
40 * Implementation of the {@link AaiModelGenerator} which generates the XML models from the
41 * Service/Resource/Widget java models.
43 public class AaiModelGeneratorImpl implements AaiModelGenerator {
44 private static Logger log = LoggerFactory.getLogger(AaiModelGeneratorImpl.class.getName());
47 * Method to generate the AAI model for a Service.
49 * @param service Java object model representing an AAI {@link Service} model
50 * @return XML representation of the service model in String format
54 public String generateModelFor(Service service) {
55 //Create a JAXB Model for AAI service model
56 Model aaiServiceModel = new Model();
57 log.debug("Generating Model for Service with ModelName: " + service.getModelName());
59 aaiServiceModel.setModelInvariantId(service.getModelId());
60 aaiServiceModel.setModelVers(new ModelVers());
61 ModelVer modelVer = new ModelVer();
62 modelVer.setModelDescription(service.getModelDescription());
63 modelVer.setModelName(service.getModelName());
64 modelVer.setModelVersion(service.getModelVersion());
65 modelVer.setModelVersionId(service.getModelNameVersionId());
66 modelVer.setModelElements(new ModelElements());
67 ModelElements modelElements = modelVer.getModelElements();
68 //Populate basic model details
70 .setModelType(service.getModelType().name().toLowerCase()); //Using enum name as model type
71 List<ModelElement> modelElementList = modelElements.getModelElement();
73 //Add service base widget model element
74 ModelElement serviceWidgetModelRelationshipElement =
75 createRelationshipModelElement(getNewDataDelFlagValue(service.getDeleteFlag()),
76 service.getWidgetId(),service.getWidgetInvariantId());
77 modelElementList.add(serviceWidgetModelRelationshipElement);
79 //Add the resource model elements
80 ModelElements serviceModelElements = serviceWidgetModelRelationshipElement.getModelElements();
81 List<ModelElement> serviceModelElementList = serviceModelElements.getModelElement();
82 Set<Resource> serviceResources = service.getResources();
83 if (serviceResources != null && !serviceResources.isEmpty()) {
84 for (Resource resourceModel : serviceResources) {
85 ModelElement aaiResourceModelElement =
86 createRelationshipModelElement(getNewDataDelFlagValue(resourceModel.getDeleteFlag()),
87 resourceModel.getModelNameVersionId(),resourceModel.getModelId());
88 serviceModelElementList.add(aaiResourceModelElement);
92 //Add the widget model elements
93 Set<Widget> serviceWidgets = service.getWidgets();
94 if (serviceWidgets != null && !serviceWidgets.isEmpty()) {
95 for (Widget widgetModel : serviceWidgets) {
96 ModelElement widgetModelElement =
97 createRelationshipModelElement(getNewDataDelFlagValue(widgetModel.getDeleteFlag()),
98 widgetModel.getId(),widgetModel.getWidgetId());
99 serviceModelElementList.add(widgetModelElement);
102 ModelVers modelVers = aaiServiceModel.getModelVers();
103 List<ModelVer> modelVerList = modelVers.getModelVer();
104 modelVerList.add(modelVer);
105 return getModelAsString(aaiServiceModel);
109 * Method to generate the AAI model for a Resource.
111 * @param resource Java object model representing an AAI {@link Resource} model
112 * @return XML representation of the resource model in String format
116 public String generateModelFor(Resource resource) {
117 //Create a JAXB Model for AAI Resource model
118 Model aaiResourceModel = new Model();
119 log.debug("Generating Model for Resource with ModelName: " + resource.getModelName());
120 aaiResourceModel.setModelInvariantId(resource.getModelId());
121 aaiResourceModel.setModelVers(new ModelVers());
122 ModelVer modelVer = new ModelVer();
123 modelVer.setModelDescription(resource.getModelDescription());
124 modelVer.setModelName(resource.getModelName());
125 modelVer.setModelVersion(resource.getModelVersion());
126 modelVer.setModelVersionId(resource.getModelNameVersionId());
127 modelVer.setModelElements(new ModelElements());
128 ModelElements modelElements = modelVer.getModelElements();
130 .setModelType(resource.getModelType().name().toLowerCase()); //Using enum name as model type
131 List<ModelElement> modelElementList = modelElements.getModelElement();
133 //Add resource base widget model element
134 ModelElement resourceWidgetModelRelationshipElement =
135 createRelationshipModelElement(getNewDataDelFlagValue(resource.getDeleteFlag()),
136 resource.getWidgetId(),resource.getWidgetInvariantId());
137 modelElementList.add(resourceWidgetModelRelationshipElement);
139 //Add the child resources to the base widget model element list
140 ModelElements baseResourceWidgetModelElements =
141 resourceWidgetModelRelationshipElement.getModelElements();
142 List<ModelElement> baseResourceWidgetModelElementList =
143 baseResourceWidgetModelElements.getModelElement();
144 Set<Resource> childResources = resource.getResources();
145 if (childResources != null && !childResources.isEmpty()) {
146 for (Resource childResourceModel : childResources) {
147 ModelElement aaiChildResourceModelElement = createRelationshipModelElement(
148 getNewDataDelFlagValue(childResourceModel.getDeleteFlag()),
149 childResourceModel.getModelNameVersionId(),childResourceModel.getModelId());
150 baseResourceWidgetModelElementList.add(aaiChildResourceModelElement);
153 //Add resource widgets/resources to the resource widget model relationship element
154 Set<Widget> resourceWidgets = resource.getWidgets();
155 if (resourceWidgets != null && !resourceWidgets.isEmpty()) {
156 generateWidgetChildren(resourceWidgetModelRelationshipElement, resourceWidgets);
159 ModelVers modelVers = aaiResourceModel.getModelVers();
160 List<ModelVer> modelVerList = modelVers.getModelVer();
161 modelVerList.add(modelVer);
162 return getModelAsString(aaiResourceModel);
167 * Method to create the <model-element></model-element> holding the relationship value for a
171 * @param newDataDelFlag Value of the <new-data-del-flag></new-data-del-flag> attribute for
172 * a widget/resource in
174 * @param relationshipValue Value of the <relationship-value></relationship-value> attribute
175 * for the widget/resource in
177 * @return Java object representation for the <model-element></model-element> holding the
180 private ModelElement createRelationshipModelElement(String newDataDelFlag,
181 String modelVersionId,String
183 ModelElement relationshipModelElement = new ModelElement();
184 relationshipModelElement.setNewDataDelFlag(newDataDelFlag); //Set new-data-del-flag value
185 relationshipModelElement.setCardinality("unbounded");
186 RelationshipList relationShipList = new RelationshipList();
187 final List<Relationship> relationships = relationShipList.getRelationship();
188 Relationship relationship = new Relationship();
189 relationship.setRelatedTo("model-ver");
190 List<RelationshipData> relationshipDataList = relationship.getRelationshipData();
192 RelationshipData modelVersionRelationshipData = new RelationshipData();
193 modelVersionRelationshipData.setRelationshipKey("model-ver.model-version-id");
194 modelVersionRelationshipData.setRelationshipValue(
195 modelVersionId); //Set the widget/resource name-version-uuid as value
196 relationshipDataList.add(modelVersionRelationshipData);
197 RelationshipData modelInvariantRelationshipData = new RelationshipData();
198 modelInvariantRelationshipData.setRelationshipKey("model.model-invariant-id");
199 modelInvariantRelationshipData.setRelationshipValue(
201 relationshipDataList.add(modelInvariantRelationshipData);
202 relationships.add(relationship);
203 relationshipModelElement.setRelationshipList(relationShipList);
204 relationshipModelElement.setModelElements(new ModelElements());
205 return relationshipModelElement;
209 * Method to create the child model elements of the widget. Handles the generation of recursive
210 * child widget elements (if any)
212 * @param parent Reference to the parent widget model element
213 * @param widgetChildrenSet Set of children obtained from the tosca/widget definition
215 private void generateWidgetChildren(ModelElement parent, Set<Widget> widgetChildrenSet) {
216 for (Widget widget : widgetChildrenSet) {
217 Set<Widget> widgetSubChildren = widget.getWidgets();
218 if (widgetSubChildren != null && !widgetSubChildren.isEmpty()) {
219 ModelElement widgetChildRelationshipElement =
220 createRelationshipModelElement(getNewDataDelFlagValue(widget.getDeleteFlag()),
221 widget.getId(),widget.getWidgetId());
222 //Recursive call for getting the children of widgets (if any)
223 generateWidgetChildren(widgetChildRelationshipElement, widgetSubChildren);
224 parent.getModelElements().getModelElement().add(widgetChildRelationshipElement);
226 ModelElement widgetChildRelationshipElement =
227 createRelationshipModelElement(getNewDataDelFlagValue(widget.getDeleteFlag()),
228 widget.getId(),widget.getWidgetId()
230 parent.getModelElements().getModelElement().add(widgetChildRelationshipElement);
236 * Converts the data delete flag value from boolean to String as per AAI model.
238 * @param delFlag Boolean value as true/false from the annotation
239 * @return Converted value to a flag as per AAI model
241 private String getNewDataDelFlagValue(boolean delFlag) {
250 * JAXB marshalling helper method to convert the Java object model to XML String.
252 * @param model Java Object model of a service/widget/resource
253 * @return XML representation of the Java model in String format
255 private String getModelAsString(Model model) {
256 JAXBContext jaxbContext;
257 StringWriter modelStringWriter = new StringWriter();
259 jaxbContext = JAXBContext.newInstance(Model.class);
260 Marshaller jaxbMarshaller = jaxbContext.createMarshaller();
261 jaxbMarshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
262 jaxbMarshaller.setProperty(Marshaller.JAXB_ENCODING, "US-ASCII");
263 jaxbMarshaller.setProperty(Marshaller.JAXB_FRAGMENT, Boolean.TRUE);
264 jaxbMarshaller.marshal(model, modelStringWriter);
265 } catch (JAXBException jaxbException) {
266 throw new DOMException(DOMException.SYNTAX_ERR, jaxbException.getMessage());
269 return modelStringWriter.toString();