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/*-
* ============LICENSE_START=======================================================
* org.openecomp.aai
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END=========================================================
*/
package org.openecomp.aai.introspection;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import com.google.common.base.CaseFormat;
import com.google.common.collect.ImmutableMap;
import org.eclipse.persistence.dynamic.DynamicEntity;
import org.eclipse.persistence.jaxb.UnmarshallerProperties;
import org.eclipse.persistence.jaxb.dynamic.DynamicJAXBContext;
import org.openecomp.aai.exceptions.AAIException;
import org.openecomp.aai.introspection.exceptions.AAIUnknownObjectException;
import org.openecomp.aai.introspection.exceptions.AAIUnmarshallingException;
import org.openecomp.aai.logging.ErrorLogHelper;
import org.openecomp.aai.restcore.MediaType;
import org.openecomp.aai.workarounds.NamingExceptions;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
import javax.xml.XMLConstants;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Unmarshaller;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.stream.StreamSource;
import java.io.IOException;
import java.io.StringReader;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
public class MoxyLoader extends Loader {
private DynamicJAXBContext jaxbContext = null;
private EELFLogger LOGGER = EELFManager.getInstance().getLogger(MoxyLoader.class);
private Map<String, Introspector> allObjs = null;
/**
* Instantiates a new moxy loader.
*
* @param version the version
* @param llBuilder the ll builder
*/
protected MoxyLoader(Version version) {
super(version, ModelType.MOXY);
process(version);
}
/**
* {@inheritDoc}
* @throws AAIUnknownObjectException
*/
@Override
public Introspector introspectorFromName(String name) throws AAIUnknownObjectException {
return IntrospectorFactory.newInstance(ModelType.MOXY, objectFromName(name));
}
/**
* {@inheritDoc}
*/
@Override
public Object objectFromName(String name) throws AAIUnknownObjectException {
if (name == null) {
throw new AAIUnknownObjectException("null name passed in");
}
final String sanitizedName = NamingExceptions.getInstance().getObjectName(name);
final String upperCamel;
//Contains any uppercase, then assume it's upper camel
if (name.matches(".*[A-Z].*")) {
upperCamel = sanitizedName;
} else {
upperCamel = CaseFormat.LOWER_HYPHEN.to(CaseFormat.UPPER_CAMEL, sanitizedName);
}
try {
final DynamicEntity result = jaxbContext.newDynamicEntity(upperCamel);
if (result == null) throw new AAIUnknownObjectException("Unrecognized AAI object " + name);
return result;
} catch (IllegalArgumentException e) {
//entity does not exist
throw new AAIUnknownObjectException("Unrecognized AAI object " + name, e);
}
}
/**
* {@inheritDoc}
*/
@Override
protected void process(Version version) {
ModelInjestor injestor = ModelInjestor.getInstance();
jaxbContext = injestor.getContextForVersion(version);
}
/**
* {@inheritDoc}
*/
@Override
public Introspector unmarshal(String type, String json, MediaType mediaType) throws AAIUnmarshallingException {
try {
final Object clazz = objectFromName(type);
final Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
if (mediaType.equals(MediaType.APPLICATION_JSON_TYPE)) {
unmarshaller.setProperty(UnmarshallerProperties.MEDIA_TYPE, "application/json");
unmarshaller.setProperty(UnmarshallerProperties.JSON_INCLUDE_ROOT, false);
unmarshaller.setProperty(UnmarshallerProperties.JSON_WRAPPER_AS_ARRAY_NAME, true);
}
final DynamicEntity entity = (DynamicEntity) unmarshaller.unmarshal(new StreamSource(new StringReader(json)), clazz.getClass()).getValue();
return IntrospectorFactory.newInstance(ModelType.MOXY, entity);
} catch (JAXBException e) {
AAIException ex = new AAIException("AAI_4007", e);
ErrorLogHelper.logException(ex);
throw new AAIUnmarshallingException("Could not unmarshall: " + e.getMessage(), ex);
} catch (AAIUnknownObjectException e) {
throw new AAIUnmarshallingException("Could not unmarshall: " + e.getMessage(), e);
}
}
@Override
public Map<String, Introspector> getAllObjects() {
if (this.allObjs != null) {
return allObjs;
} else {
ImmutableMap.Builder<String, Introspector> map = new ImmutableMap.Builder<String, Introspector>();
Set<String> objs = objectsInVersion();
for (String objName : objs) {
try {
Introspector introspector = this.introspectorFromName(objName);
map.put(introspector.getDbName(), introspector);
} catch (AAIUnknownObjectException e) {
LOGGER.warn("Unexpected AAIUnknownObjectException while running getAllObjects()", e);
}
}
allObjs = map.build();
return allObjs;
}
}
private Set<String> objectsInVersion() {
final Set<String> result = new HashSet<>();
try {
final DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
final String fileName = ModelInjestor.getInstance().getOXMFileName(getVersion());
docFactory.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true);
final DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
final Document doc = docBuilder.parse(fileName);
final NodeList list = doc.getElementsByTagName("java-type");
for (int i = 0; i < list.getLength(); i++) {
result.add(list.item(i).getAttributes().getNamedItem("name").getNodeValue());
}
} catch (ParserConfigurationException | SAXException | IOException e) {
LOGGER.warn("Exception while enumerating objects for API version " + getVersion() + " (returning partial results)", e);
}
//result.remove("EdgePropNames");
return result;
}
public DynamicJAXBContext getJAXBContext() {
return this.jaxbContext;
}
}
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