aai-core/src/main/java/org/onap/aai/introspection/MoxyLoader.java

   1 /**
   2  * ============LICENSE_START=======================================================
   3  * org.onap.aai
   4  * ================================================================================
   5  * Copyright © 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
  10  *
  11  *    http://www.apache.org/licenses/LICENSE-2.0
  12  *
  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=========================================================
  19  *
  20  * ECOMP is a trademark and service mark of AT&T Intellectual Property.
  21  */
  22 package org.onap.aai.introspection;
  23
  24 import com.att.eelf.configuration.EELFLogger;
  25 import com.att.eelf.configuration.EELFManager;
  26 import com.google.common.base.CaseFormat;
  27 import com.google.common.collect.ImmutableMap;
  28 import org.eclipse.persistence.dynamic.DynamicEntity;
  29 import org.eclipse.persistence.jaxb.UnmarshallerProperties;
  30 import org.eclipse.persistence.jaxb.dynamic.DynamicJAXBContext;
  31 import org.onap.aai.exceptions.AAIException;
  32 import org.onap.aai.introspection.exceptions.AAIUnknownObjectException;
  33 import org.onap.aai.introspection.exceptions.AAIUnmarshallingException;
  34 import org.onap.aai.logging.ErrorLogHelper;
  35 import org.onap.aai.restcore.MediaType;
  36 import org.onap.aai.workarounds.NamingExceptions;
  37 import org.w3c.dom.Document;
  38 import org.w3c.dom.NodeList;
  39 import org.xml.sax.SAXException;
  40
  41 import javax.xml.XMLConstants;
  42 import javax.xml.bind.JAXBException;
  43 import javax.xml.bind.Unmarshaller;
  44 import javax.xml.parsers.DocumentBuilder;
  45 import javax.xml.parsers.DocumentBuilderFactory;
  46 import javax.xml.parsers.ParserConfigurationException;
  47 import javax.xml.transform.stream.StreamSource;
  48 import java.io.IOException;
  49 import java.io.StringReader;
  50 import java.util.HashSet;
  51 import java.util.Map;
  52 import java.util.Set;
  53
  54 public class MoxyLoader extends Loader {
  55
  56         private DynamicJAXBContext jaxbContext = null;
  57         private EELFLogger LOGGER = EELFManager.getInstance().getLogger(MoxyLoader.class);
  58         private Map<String, Introspector> allObjs = null;
  59
  60         /**
  61          * Instantiates a new moxy loader.
  62          *
  63          * @param version the version
  64          * @param llBuilder the ll builder
  65          */
  66         protected MoxyLoader(Version version) {
  67                 super(version, ModelType.MOXY);
  68                 process(version);
  69         }
  70
  71         /**
  72          * {@inheritDoc}
  73          * @throws AAIUnknownObjectException
  74          */
  75         @Override
  76         public Introspector introspectorFromName(String name) throws AAIUnknownObjectException {
  77
  78                 return IntrospectorFactory.newInstance(ModelType.MOXY, objectFromName(name));
  79         }
  80
  81         /**
  82          * {@inheritDoc}
  83          */
  84         @Override
  85         public Object objectFromName(String name) throws AAIUnknownObjectException {
  86
  87                 if (name == null) {
  88                         throw new AAIUnknownObjectException("null name passed in");
  89                 }
  90                 final String sanitizedName = NamingExceptions.getInstance().getObjectName(name);
  91                 final String upperCamel;
  92
  93                 //Contains any uppercase, then assume it's upper camel
  94                 if (name.matches(".*[A-Z].*")) {
  95                         upperCamel = sanitizedName;
  96                 } else {
  97                         upperCamel = CaseFormat.LOWER_HYPHEN.to(CaseFormat.UPPER_CAMEL, sanitizedName);
  98                 }
  99
 100                 try {
 101                         final DynamicEntity result = jaxbContext.newDynamicEntity(upperCamel);
 102
 103                         if (result == null) throw new AAIUnknownObjectException("Unrecognized AAI object " + name);
 104
 105                         return result;
 106                 } catch (IllegalArgumentException e) {
 107                         //entity does not exist
 108                         throw new AAIUnknownObjectException("Unrecognized AAI object " + name, e);
 109                 }
 110         }
 111
 112         /**
 113          * {@inheritDoc}
 114          */
 115         @Override
 116         protected void process(Version version) {
 117                 ModelInjestor injestor = ModelInjestor.getInstance();
 118                 jaxbContext = injestor.getContextForVersion(version);
 119
 120         }
 121
 122         /**
 123          * {@inheritDoc}
 124          */
 125         @Override
 126         public Introspector unmarshal(String type, String json, MediaType mediaType) throws AAIUnmarshallingException {
 127                 try {
 128                         final Object clazz = objectFromName(type);
 129                         final Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
 130
 131                         if (mediaType.equals(MediaType.APPLICATION_JSON_TYPE)) {
 132                                 unmarshaller.setProperty(UnmarshallerProperties.MEDIA_TYPE, "application/json");
 133                                 unmarshaller.setProperty(UnmarshallerProperties.JSON_INCLUDE_ROOT, false);
 134                                 unmarshaller.setProperty(UnmarshallerProperties.JSON_WRAPPER_AS_ARRAY_NAME, true);
 135                         }
 136
 137                         final DynamicEntity entity = (DynamicEntity) unmarshaller.unmarshal(new StreamSource(new StringReader(json)), clazz.getClass()).getValue();
 138                         return IntrospectorFactory.newInstance(ModelType.MOXY, entity);
 139                 } catch (JAXBException e) {
 140                         AAIException ex = new AAIException("AAI_4007", e);
 141                         ErrorLogHelper.logException(ex);
 142                         throw new AAIUnmarshallingException("Could not unmarshall: " + e.getMessage(), ex);
 143                 } catch (AAIUnknownObjectException e) {
 144                         throw new AAIUnmarshallingException("Could not unmarshall: " + e.getMessage(), e);
 145                 }
 146         }
 147
 148         @Override
 149         public Map<String, Introspector> getAllObjects() {
 150                 if (this.allObjs != null) {
 151                         return allObjs;
 152                 } else {
 153                         ImmutableMap.Builder<String, Introspector> map = new ImmutableMap.Builder<String, Introspector>();
 154                         Set<String> objs = objectsInVersion();
 155                         for (String objName : objs) {
 156                                 try {
 157                                         Introspector introspector = this.introspectorFromName(objName);
 158                                         map.put(introspector.getDbName(), introspector);
 159                                 } catch (AAIUnknownObjectException e) {
 160                                         LOGGER.warn("Unexpected AAIUnknownObjectException while running getAllObjects()", e);
 161                                 }
 162                         }
 163                         allObjs = map.build();
 164                         return allObjs;
 165                 }
 166         }
 167
 168         private Set<String> objectsInVersion() {
 169                 final Set<String> result = new HashSet<>();
 170
 171                 try {
 172                         final DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
 173                         final String fileName = ModelInjestor.getInstance().getOXMFileName(getVersion());
 174
 175                         docFactory.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true);
 176
 177                         final DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
 178                         final Document doc = docBuilder.parse(fileName);
 179                         final NodeList list = doc.getElementsByTagName("java-type");
 180
 181                         for (int i = 0; i < list.getLength(); i++) {
 182                                 result.add(list.item(i).getAttributes().getNamedItem("name").getNodeValue());
 183                         }
 184                 } catch (ParserConfigurationException | SAXException | IOException e) {
 185                         LOGGER.warn("Exception while enumerating objects for API version " + getVersion() + " (returning partial results)", e);
 186                 }
 187
 188                 //result.remove("EdgePropNames");
 189                 return result;
 190         }
 191
 192         public DynamicJAXBContext getJAXBContext() {
 193                 return this.jaxbContext;
 194         }
 195
 196 }