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.openecomp.aai.exceptions.AAIException;
  41 import org.openecomp.aai.introspection.exceptions.AAIUnknownObjectException;
  42 import org.openecomp.aai.introspection.exceptions.AAIUnmarshallingException;
  43 import org.openecomp.aai.logging.ErrorLogHelper;
  44 import org.openecomp.aai.restcore.MediaType;
  45 import org.openecomp.aai.workarounds.NamingExceptions;
  46 import org.w3c.dom.Document;
  47 import org.w3c.dom.NodeList;
  48 import org.xml.sax.SAXException;
  49
  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                 if (name == null) {
  89                         throw new AAIUnknownObjectException("null name passed in");
  90                 }
  91                 final String sanitizedName = NamingExceptions.getInstance().getObjectName(name);
  92                 final String upperCamel;
  93
  94                 //Contains any uppercase, then assume it's upper camel
  95                 if (name.matches(".*[A-Z].*")) {
  96                         upperCamel = sanitizedName;
  97                 } else {
  98                         upperCamel = CaseFormat.LOWER_HYPHEN.to(CaseFormat.UPPER_CAMEL, sanitizedName);
  99                 }
 100
 101                 try {
 102                         final DynamicEntity result = jaxbContext.newDynamicEntity(upperCamel);
 103
 104                         if (result == null) throw new AAIUnknownObjectException("Unrecognized AAI object " + name);
 105
 106                         return result;
 107                 } catch (IllegalArgumentException e) {
 108                         //entity does not exist
 109                         throw new AAIUnknownObjectException("Unrecognized AAI object " + name, e);
 110                 }
 111         }
 112
 113         /**
 114          * {@inheritDoc}
 115          */
 116         @Override
 117         protected void process(Version version) {
 118                 ModelInjestor injestor = ModelInjestor.getInstance();
 119                 jaxbContext = injestor.getContextForVersion(version);
 120
 121         }
 122
 123         /**
 124          * {@inheritDoc}
 125          */
 126         @Override
 127         public Introspector unmarshal(String type, String json, MediaType mediaType) throws AAIUnmarshallingException {
 128                 try {
 129                         final Object clazz = objectFromName(type);
 130                         final Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
 131
 132                         if (mediaType.equals(MediaType.APPLICATION_JSON_TYPE)) {
 133                                 unmarshaller.setProperty(UnmarshallerProperties.MEDIA_TYPE, "application/json");
 134                                 unmarshaller.setProperty(UnmarshallerProperties.JSON_INCLUDE_ROOT, false);
 135                                 unmarshaller.setProperty(UnmarshallerProperties.JSON_WRAPPER_AS_ARRAY_NAME, true);
 136                         }
 137
 138                         final DynamicEntity entity = (DynamicEntity) unmarshaller.unmarshal(new StreamSource(new StringReader(json)), clazz.getClass()).getValue();
 139                         return IntrospectorFactory.newInstance(ModelType.MOXY, entity);
 140                 } catch (JAXBException e) {
 141                         AAIException ex = new AAIException("AAI_4007", e);
 142                         ErrorLogHelper.logException(ex);
 143                         throw new AAIUnmarshallingException("Could not unmarshall: " + e.getMessage(), ex);
 144                 } catch (AAIUnknownObjectException e) {
 145                         throw new AAIUnmarshallingException("Could not unmarshall: " + e.getMessage(), e);
 146                 }
 147         }
 148
 149         @Override
 150         public Map<String, Introspector> getAllObjects() {
 151                 if (this.allObjs != null) {
 152                         return allObjs;
 153                 } else {
 154                         ImmutableMap.Builder<String, Introspector> map = new ImmutableMap.Builder<String, Introspector>();
 155                         Set<String> objs = objectsInVersion();
 156                         for (String objName : objs) {
 157                                 try {
 158                                         Introspector introspector = this.introspectorFromName(objName);
 159                                         map.put(introspector.getDbName(), introspector);
 160                                 } catch (AAIUnknownObjectException e) {
 161                                         LOGGER.warn("Unexpected AAIUnknownObjectException while running getAllObjects()", e);
 162                                 }
 163                         }
 164                         allObjs = map.build();
 165                         return allObjs;
 166                 }
 167         }
 168
 169         private Set<String> objectsInVersion() {
 170                 final Set<String> result = new HashSet<>();
 171
 172                 try {
 173                         final DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
 174                         final String fileName = ModelInjestor.getInstance().getOXMFileName(getVersion());
 175
 176                         docFactory.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true);
 177
 178                         final DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
 179                         final Document doc = docBuilder.parse(fileName);
 180                         final NodeList list = doc.getElementsByTagName("java-type");
 181
 182                         for (int i = 0; i < list.getLength(); i++) {
 183                                 result.add(list.item(i).getAttributes().getNamedItem("name").getNodeValue());
 184                         }
 185                 } catch (ParserConfigurationException | SAXException | IOException e) {
 186                         LOGGER.warn("Exception while enumerating objects for API version " + getVersion() + " (returning partial results)", e);
 187                 }
 188
 189                 result.remove("EdgePropNames");
 190                 return result;
 191         }
 192
 193         public DynamicJAXBContext getJAXBContext() {
 194                 return this.jaxbContext;
 195         }
 196
 197 }