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

   1 /**
   2  * ============LICENSE_START=======================================================
   3  * org.onap.aai
   4  * ================================================================================
   5  * Copyright © 2017-2018 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 package org.onap.aai.introspection;
  21
  22 import com.att.eelf.configuration.EELFLogger;
  23 import com.att.eelf.configuration.EELFManager;
  24 import com.google.common.base.CaseFormat;
  25 import com.google.common.collect.ImmutableMap;
  26 import org.eclipse.persistence.dynamic.DynamicEntity;
  27 import org.eclipse.persistence.jaxb.UnmarshallerProperties;
  28 import org.eclipse.persistence.jaxb.dynamic.DynamicJAXBContext;
  29 import org.onap.aai.exceptions.AAIException;
  30 import org.onap.aai.introspection.exceptions.AAIUnknownObjectException;
  31 import org.onap.aai.introspection.exceptions.AAIUnmarshallingException;
  32 import org.onap.aai.logging.ErrorLogHelper;
  33 import org.onap.aai.logging.LogFormatTools;
  34 import org.onap.aai.restcore.MediaType;
  35 import org.onap.aai.util.AAIConstants;
  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.*;
  49 import java.util.HashSet;
  50 import java.util.Map;
  51 import java.util.Set;
  52
  53 public class MoxyLoader extends Loader {
  54
  55         private DynamicJAXBContext jaxbContext = null;
  56         private EELFLogger LOGGER = EELFManager.getInstance().getLogger(MoxyLoader.class);
  57         private Map<String, Introspector> allObjs = null;
  58
  59         /**
  60          * Instantiates a new moxy loader.
  61          *
  62          * @param version the version
  63          * @param llBuilder the ll builder
  64          */
  65         protected MoxyLoader(Version version) {
  66                 super(version, ModelType.MOXY);
  67                 process(version);
  68         }
  69
  70         /**
  71          * {@inheritDoc}
  72          * @throws AAIUnknownObjectException
  73          */
  74         @Override
  75         public Introspector introspectorFromName(String name) throws AAIUnknownObjectException {
  76
  77                 return IntrospectorFactory.newInstance(ModelType.MOXY, objectFromName(name));
  78         }
  79
  80         /**
  81          * {@inheritDoc}
  82          */
  83         @Override
  84         public Object objectFromName(String name) throws AAIUnknownObjectException {
  85
  86                 if (name == null) {
  87                         throw new AAIUnknownObjectException("null name passed in");
  88                 }
  89                 final String sanitizedName = NamingExceptions.getInstance().getObjectName(name);
  90                 final String upperCamel;
  91
  92                 //Contains any uppercase, then assume it's upper camel
  93                 if (name.matches(".*[A-Z].*")) {
  94                         upperCamel = sanitizedName;
  95                 } else {
  96                         upperCamel = CaseFormat.LOWER_HYPHEN.to(CaseFormat.UPPER_CAMEL, sanitizedName);
  97                 }
  98
  99                 try {
 100                         final DynamicEntity result = jaxbContext.newDynamicEntity(upperCamel);
 101
 102                         if (result == null) throw new AAIUnknownObjectException("Unrecognized AAI object " + name);
 103
 104                         return result;
 105                 } catch (IllegalArgumentException e) {
 106                         //entity does not exist
 107                         throw new AAIUnknownObjectException("Unrecognized AAI object " + name, e);
 108                 }
 109         }
 110
 111         /**
 112          * {@inheritDoc}
 113          */
 114         @Override
 115         protected void process(Version version) {
 116                 ModelInjestor injestor = ModelInjestor.getInstance();
 117                 jaxbContext = injestor.getContextForVersion(version);
 118
 119         }
 120
 121         /**
 122          * {@inheritDoc}
 123          */
 124         @Override
 125         public Introspector unmarshal(String type, String json, MediaType mediaType) throws AAIUnmarshallingException {
 126                 try {
 127                         final Object clazz = objectFromName(type);
 128                         final Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
 129
 130                         if (mediaType.equals(MediaType.APPLICATION_JSON_TYPE)) {
 131                                 unmarshaller.setProperty(UnmarshallerProperties.MEDIA_TYPE, "application/json");
 132                                 unmarshaller.setProperty(UnmarshallerProperties.JSON_INCLUDE_ROOT, false);
 133                                 unmarshaller.setProperty(UnmarshallerProperties.JSON_WRAPPER_AS_ARRAY_NAME, true);
 134                         }
 135
 136                         final DynamicEntity entity = (DynamicEntity) unmarshaller.unmarshal(new StreamSource(new StringReader(json)), clazz.getClass()).getValue();
 137                         return IntrospectorFactory.newInstance(ModelType.MOXY, entity);
 138                 } catch (JAXBException e) {
 139                         AAIException ex = new AAIException("AAI_4007", e);
 140                         ErrorLogHelper.logException(ex);
 141                         throw new AAIUnmarshallingException("Could not unmarshall: " + e.getMessage(), ex);
 142                 } catch (AAIUnknownObjectException e) {
 143                         throw new AAIUnmarshallingException("Could not unmarshall: " + e.getMessage(), e);
 144                 }
 145         }
 146
 147         @Override
 148         public Map<String, Introspector> getAllObjects() {
 149                 if (this.allObjs != null) {
 150                         return allObjs;
 151                 } else {
 152                         ImmutableMap.Builder<String, Introspector> map = new ImmutableMap.Builder<String, Introspector>();
 153                         Set<String> objs = objectsInVersion();
 154                         for (String objName : objs) {
 155                                 try {
 156                                         Introspector introspector = this.introspectorFromName(objName);
 157                                         map.put(introspector.getDbName(), introspector);
 158                                 } catch (AAIUnknownObjectException e) {
 159                                         LOGGER.warn("Unexpected AAIUnknownObjectException while running getAllObjects() " + LogFormatTools.getStackTop(e));
 160                                 }
 161                         }
 162                         allObjs = map.build();
 163                         return allObjs;
 164                 }
 165         }
 166
 167         private Set<String> objectsInVersion() {
 168                 final Set<String> result = new HashSet<>();
 169
 170                 try {
 171                         final DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
 172                         final String fileName = ModelInjestor.getInstance().getOXMFileName(getVersion());
 173
 174                         docFactory.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true);
 175
 176                         final DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
 177
 178                         InputStream inputStream;
 179                         File oxmFile = new File(AAIConstants.AAI_HOME_ETC + fileName);
 180
 181                         if(oxmFile.exists()){
 182                             LOGGER.info("Oxm file exists on the system {}", oxmFile);
 183                                 inputStream = new FileInputStream(oxmFile);
 184                         } else {
 185                                 LOGGER.warn("Unable to find oxm file {} on the system so using classloader", oxmFile);
 186                                 inputStream = getClass().getClassLoader().getResourceAsStream(fileName);
 187                         }
 188
 189                         final Document doc = docBuilder.parse(inputStream);
 190                         final NodeList list = doc.getElementsByTagName("java-type");
 191
 192                         for (int i = 0; i < list.getLength(); i++) {
 193                                 result.add(list.item(i).getAttributes().getNamedItem("name").getNodeValue());
 194                         }
 195                 } catch (ParserConfigurationException | SAXException | IOException e) {
 196                         LOGGER.warn("Exception while enumerating objects for API version " + getVersion() + " (returning partial results) " + LogFormatTools.getStackTop(e));
 197                 }
 198
 199                 //result.remove("EdgePropNames");
 200                 return result;
 201         }
 202
 203         public DynamicJAXBContext getJAXBContext() {
 204                 return this.jaxbContext;
 205         }
 206
 207 }