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/**
* ============LICENSE_START=======================================================
* org.onap.aai
* ================================================================================
* Copyright © 2017 AT&T Intellectual Property.
* Copyright © 2017 Amdocs
* 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=========================================================
*
* ECOMP is a trademark and service mark of AT&T Intellectual Property.
*/
package org.onap.aaiutils.oxm;
import org.eclipse.persistence.jaxb.JAXBContextProperties;
import org.eclipse.persistence.jaxb.dynamic.DynamicJAXBContext;
import org.eclipse.persistence.jaxb.dynamic.DynamicJAXBContextFactory;
import org.onap.aai.cl.eelf.LoggerFactory;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;
import java.io.*;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.xml.bind.JAXBException;
public class OxmModelLoader {
final static Pattern p = Pattern.compile("aai_oxm_(.*).xml");
private static Map<String, DynamicJAXBContext> versionContextMap = new ConcurrentHashMap();
private static org.onap.aai.cl.api.Logger logger = LoggerFactory.getInstance()
.getLogger(OxmModelLoader.class.getName());
public synchronized static void loadModels() throws Exception {
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( OxmModelLoaderMsgs.OXM_LOAD_ERROR, ex.getMessage());
throw new FileNotFoundException("OXM files not found on classpath.");
}
if (resources.length == 0) {
logger.error(OxmModelLoaderMsgs.OXM_LOAD_ERROR, "No OXM schema files found on classpath");
throw new Exception("Failed to load schema");
}
for (Resource resource : resources) {
Matcher matcher = p.matcher(resource.getFilename());
if (matcher.matches()) {
try {
OxmModelLoader.loadModel(matcher.group(1), resource);
} catch (Exception e) {
logger.error(OxmModelLoaderMsgs.OXM_LOAD_ERROR, "Failed to load " + resource.getFilename()
+ ": " + e.getMessage());
throw new Exception("Failed to load schema");
}
}
}
}
public static DynamicJAXBContext getContextForVersion(String version) throws Exception {
if (versionContextMap == null || versionContextMap.isEmpty()) {
loadModels();
} else if (!versionContextMap.containsKey(version)) {
String filename = OxmModelLoaderConstants.AaiUtils_HOME_MODEL + "aai_oxm_" + version + ".xml";
try {
loadModel(version, new File(filename));
} catch (Exception e) {
throw new FileNotFoundException(filename);
}
}
return versionContextMap.get(version);
}
public static Map<String, DynamicJAXBContext> getVersionContextMap() {
return versionContextMap;
}
public static void setVersionContextMap(Map<String, DynamicJAXBContext> versionContextMap) {
OxmModelLoader.versionContextMap = versionContextMap;
}
private synchronized static void loadModel ( String version, File file )
throws JAXBException, IOException {
InputStream inputStream = new FileInputStream ( file );
loadModel ( version, file.getName (), inputStream );
}
private synchronized static void loadModel ( String version, Resource resource )
throws JAXBException, IOException {
InputStream inputStream = resource.getInputStream ();
loadModel ( version, resource.getFilename (), inputStream );
}
private synchronized static void loadModel ( String version, String resourceName,
InputStream inputStream )
throws JAXBException, IOException {
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 );
logger.info ( OxmModelLoaderMsgs.LOADED_OXM_FILE, resourceName );
}
}
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