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/**
* ============LICENSE_START=======================================================
* org.onap.aai
* ================================================================================
* Copyright © 2017 AT&T Intellectual Property. All rights reserved.
* Copyright © 2017 Amdocs
* ================================================================================
* 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=========================================================
*
* ECOMP is a trademark and service mark of AT&T Intellectual Property.
*/
package org.openecomp.datarouter.util;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.ws.rs.core.Response.Status;
import javax.xml.bind.JAXBException;
import org.eclipse.persistence.jaxb.JAXBContextProperties;
import org.eclipse.persistence.jaxb.dynamic.DynamicJAXBContext;
import org.eclipse.persistence.jaxb.dynamic.DynamicJAXBContextFactory;
import org.openecomp.cl.eelf.LoggerFactory;
import org.openecomp.datarouter.logging.DataRouterMsgs;
import org.openecomp.datarouter.util.ExternalOxmModelProcessor;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;
public class OxmModelLoader {
private static Map<String, DynamicJAXBContext> versionContextMap = new ConcurrentHashMap<String, DynamicJAXBContext>();
private static List<ExternalOxmModelProcessor> oxmModelProcessorRegistry = new ArrayList<ExternalOxmModelProcessor>();
final static Pattern p = Pattern.compile("aai_oxm_(.*).xml");
private static org.openecomp.cl.api.Logger logger = LoggerFactory.getInstance()
.getLogger(OxmModelLoader.class.getName());
public synchronized static void loadModels() throws FileNotFoundException {
ClassLoader cl = OxmModelLoader.class.getClassLoader();
ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver(cl);
Resource[] resources;
try {
resources = resolver.getResources("classpath*:/oxm/aai_oxm*.xml");
} catch (IOException ex) {
logger.error(DataRouterMsgs.LOAD_OXM_ERROR, ex.getMessage());
throw new FileNotFoundException("Unable to load OXM models from schema path : /oxm/aai_oxm*.xml");
}
if (resources.length == 0) {
logger.error(DataRouterMsgs.LOAD_OXM_ERROR, "No OXM schema files found on classpath");
throw new FileNotFoundException("Unable to load OXM models from schema path : /oxm/aai_oxm*.xml");
}
for (Resource resource : resources) {
Matcher matcher = p.matcher(resource.getFilename());
if (matcher.matches()) {
try {
OxmModelLoader.loadModel(matcher.group(1), resource.getFilename(),resource.getInputStream());
} catch (Exception e) {
logger.error(DataRouterMsgs.LOAD_OXM_ERROR, "Failed to load " + resource.getFilename()
+ ": " + e.getMessage());
}
}
}
}
private synchronized static void loadModel(String version,String resourceName,InputStream inputStream) throws JAXBException, FileNotFoundException {
Map<String, Object> properties = new HashMap<String, Object>();
properties.put(JAXBContextProperties.OXM_METADATA_SOURCE, inputStream);
final DynamicJAXBContext jaxbContext = DynamicJAXBContextFactory
.createContextFromOXM(Thread.currentThread().getContextClassLoader(), properties);
versionContextMap.put(version, jaxbContext);
if ( oxmModelProcessorRegistry != null) {
for ( ExternalOxmModelProcessor processor : oxmModelProcessorRegistry ) {
processor.onOxmVersionChange(Version.valueOf(version), jaxbContext );
}
}
logger.info(DataRouterMsgs.LOADED_OXM_FILE, resourceName);
}
public static DynamicJAXBContext getContextForVersion(String version) throws Exception {
if (versionContextMap == null || versionContextMap.isEmpty()) {
loadModels();
} else if (!versionContextMap.containsKey(version)) {
throw new Exception(Status.NOT_FOUND.toString());
}
return versionContextMap.get(version);
}
public static Map<String, DynamicJAXBContext> getVersionContextMap() {
return versionContextMap;
}
public static void setVersionContextMap(Map<String, DynamicJAXBContext> versionContextMap) {
OxmModelLoader.versionContextMap = versionContextMap;
}
public synchronized static void registerExternalOxmModelProcessors(Collection<ExternalOxmModelProcessor> processors) {
if(processors != null) {
for(ExternalOxmModelProcessor processor : processors) {
if(!oxmModelProcessorRegistry.contains(processor)) {
oxmModelProcessorRegistry.add(processor);
}
}
}
}
}
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