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

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