aai-core/src/main/java/org/openecomp/aai/introspection/PojoLoader.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.StringReader;
  24 import java.util.Map;
  25
  26 import javax.xml.bind.JAXBContext;
  27 import javax.xml.bind.JAXBException;
  28 import javax.xml.bind.Unmarshaller;
  29 import javax.xml.transform.stream.StreamSource;
  30
  31 import org.eclipse.persistence.jaxb.JAXBContextFactory;
  32 import org.eclipse.persistence.jaxb.UnmarshallerProperties;
  33 import org.openecomp.aai.db.props.AAIProperties;
  34 import org.openecomp.aai.introspection.exceptions.AAIUnknownObjectException;
  35 import org.openecomp.aai.introspection.exceptions.AAIUnmarshallingException;
  36 import org.openecomp.aai.logging.ErrorLogHelper;
  37 import org.openecomp.aai.restcore.MediaType;
  38 import org.openecomp.aai.workarounds.NamingExceptions;
  39
  40 import com.att.eelf.configuration.EELFLogger;
  41 import com.att.eelf.configuration.EELFManager;
  42 import com.google.common.base.CaseFormat;
  43
  44 public class PojoLoader extends Loader {
  45
  46         private static final EELFLogger LOGGER = EELFManager.getInstance().getLogger(PojoLoader.class);
  47         private static final String POJO_BASE_PACKAGE_NAME = "org.openecomp.aai.domain.yang";
  48
  49         protected JAXBContext context;
  50         private final String pojoPackageName;
  51
  52         protected PojoLoader(Version version) {
  53                 super(version, ModelType.POJO);
  54
  55                 if (!version.equals(AAIProperties.LATEST)) {
  56                         pojoPackageName = POJO_BASE_PACKAGE_NAME + "." + version;
  57                 } else {
  58                         pojoPackageName = POJO_BASE_PACKAGE_NAME;
  59                 }
  60
  61                 try {
  62                         context = JAXBContextFactory.createContext(pojoPackageName, this.getClass().getClassLoader());
  63                 } catch (JAXBException e) {
  64                         LOGGER.error("JAXBException while instantiation contect for PojoLoader", e);
  65                 }
  66         }
  67
  68         @Override
  69         public Introspector introspectorFromName(String name) throws AAIUnknownObjectException {
  70                 return IntrospectorFactory.newInstance(ModelType.POJO, objectFromName(name));
  71         }
  72
  73         @Override
  74         public Object objectFromName(String name) throws AAIUnknownObjectException {
  75
  76                 if (name == null) {
  77                         throw new AAIUnknownObjectException("null name passed in");
  78                 }
  79                 final String sanitizedName = NamingExceptions.getInstance().getObjectName(name);
  80                 final String upperCamel;
  81
  82                 //Contains any uppercase, then assume it's upper camel
  83                 if (sanitizedName.matches(".*[A-Z].*")) {
  84                         upperCamel = sanitizedName;
  85                 } else {
  86                         upperCamel = CaseFormat.LOWER_HYPHEN.to(CaseFormat.UPPER_CAMEL, sanitizedName);
  87                 }
  88
  89                 final String objectClassName;
  90
  91                 if (!upperCamel.contains(pojoPackageName)) {
  92                         objectClassName = pojoPackageName + "." + upperCamel;
  93                 } else {
  94                         objectClassName = upperCamel;
  95                 }
  96
  97                 try {
  98                         return Class.forName(objectClassName).newInstance();
  99                 } catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) {
 100                         throw new AAIUnknownObjectException("Unrecognized AAI object " + name);
 101                 }
 102         }
 103
 104         @Override
 105         protected void process(Version version) {
 106                 LOGGER.warn("PojoLoader.process(Version) has not been implemented");
 107         }
 108
 109         @Override
 110         public Introspector unmarshal(String type, String json, MediaType mediaType) throws AAIUnmarshallingException {
 111
 112                  try {
 113                         final Unmarshaller unmarshaller = context.createUnmarshaller();
 114
 115                         if (mediaType.equals(MediaType.APPLICATION_JSON_TYPE)) {
 116                         unmarshaller.setProperty(UnmarshallerProperties.MEDIA_TYPE, "application/json");
 117                         unmarshaller.setProperty(UnmarshallerProperties.JSON_INCLUDE_ROOT, false);
 118                                 unmarshaller.setProperty(UnmarshallerProperties.JSON_WRAPPER_AS_ARRAY_NAME, true);
 119                         }
 120
 121                         final Object clazz = objectFromName(type);
 122                         final Object obj = unmarshaller.unmarshal(new StreamSource(new StringReader(json)), clazz.getClass()).getValue();
 123
 124                         return IntrospectorFactory.newInstance(ModelType.POJO, obj);
 125                  } catch (JAXBException e) {
 126                         ErrorLogHelper.logError("AAI_4007", "Could not unmarshall: " + e.getMessage());
 127                         throw new AAIUnmarshallingException("Could not unmarshall: " + e.getMessage());
 128                 } catch (AAIUnknownObjectException e) {
 129                         throw new AAIUnmarshallingException("Could not unmarshall: " + e.getMessage(), e);
 130                 }
 131         }
 132
 133         @Override
 134         public Map<String, Introspector> getAllObjects() {
 135                 //TODO
 136                 return null;
 137         }
 138
 139 }