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/**
* ============LICENSE_START=======================================================
* org.onap.aai
* ================================================================================
* Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
* Copyright © 2017-2018 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=========================================================
*/
package org.onap.aai.spike.schema;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.eclipse.persistence.jaxb.dynamic.DynamicJAXBContext;
import org.onap.aai.cl.eelf.LoggerFactory;
import org.onap.aai.nodes.NodeIngestor;
import org.onap.aai.setup.ConfigTranslator;
import org.onap.aai.setup.SchemaLocationsBean;
import org.onap.aai.setup.Version;
import org.onap.aai.spike.exception.SpikeException;
import org.onap.aai.spike.logging.SpikeMsgs;
import org.onap.aai.spike.util.SchemaIngestPropertiesReader;
/**
* This class contains all of the logic for importing OXM model schemas from the available OXM
* schema files.
*/
public class OXMModelLoader {
private static Map<String, DynamicJAXBContext> versionContextMap =
new ConcurrentHashMap<String, DynamicJAXBContext>();
final static Pattern p = Pattern.compile("aai_oxm_(.*).xml");
final static Pattern versionPattern = Pattern.compile("V(\\d*)");
private static org.onap.aai.cl.api.Logger logger =
LoggerFactory.getInstance().getLogger(OXMModelLoader.class.getName());
/**
* Finds all OXM model files
*
* @throws SpikeException
* @throws IOException
*
*/
public synchronized static void loadModels() throws SpikeException {
SchemaIngestPropertiesReader schemaIngestPropReader = new SchemaIngestPropertiesReader();
SchemaLocationsBean schemaLocationsBean = new SchemaLocationsBean();
schemaLocationsBean.setNodeDirectory(schemaIngestPropReader.getNodeDir());
schemaLocationsBean.setEdgeDirectory(schemaIngestPropReader.getEdgeDir());
ConfigTranslator configTranslator = new OxmConfigTranslator(schemaLocationsBean);
NodeIngestor nodeIngestor = new NodeIngestor(configTranslator);
if (logger.isDebugEnabled()) {
logger.debug("Loading OXM Models");
}
for (Version oxmVersion : Version.values()) {
DynamicJAXBContext jaxbContext = nodeIngestor.getContextForVersion(oxmVersion);
if (jaxbContext != null) {
loadModel(oxmVersion.toString(), jaxbContext);
}
}
}
private synchronized static void loadModel(String oxmVersion, DynamicJAXBContext jaxbContext) {
versionContextMap.put(oxmVersion, jaxbContext);
logger.info(SpikeMsgs.LOADED_OXM_FILE, oxmVersion);
}
/**
* Retrieves the JAXB context for the specified OXM model version.
*
* @param version - The OXM version that we want the JAXB context for.
*
* @return - A JAXB context derived from the OXM model schema.
*
* @throws SpikeException
*/
public static DynamicJAXBContext getContextForVersion(String version) throws SpikeException {
// If we haven't already loaded in the available OXM models, then do so now.
if (versionContextMap == null || versionContextMap.isEmpty()) {
loadModels();
} else if (!versionContextMap.containsKey(version)) {
throw new SpikeException("Error loading oxm model: " + version);
}
return versionContextMap.get(version);
}
public static String getLatestVersion() throws SpikeException {
// If we haven't already loaded in the available OXM models, then do so now.
if (versionContextMap == null || versionContextMap.isEmpty()) {
loadModels();
}
// If there are still no models available, then there's not much we can do...
if (versionContextMap.isEmpty()) {
throw new SpikeException("No available OXM schemas to get latest version for.");
}
// Iterate over the available model versions to determine which is the most
// recent.
Integer latestVersion = null;
String latestVersionStr = null;
for (String versionKey : versionContextMap.keySet()) {
Matcher matcher = versionPattern.matcher(versionKey);
if (matcher.find()) {
int currentVersion = Integer.valueOf(matcher.group(1));
if ((latestVersion == null) || (currentVersion > latestVersion)) {
latestVersion = currentVersion;
latestVersionStr = versionKey;
}
}
}
return latestVersionStr;
}
/**
* Retrieves the map of all JAXB context objects that have been created by importing the available
* OXM model schemas.
*
* @return - Map of JAXB context objects.
*/
public static Map<String, DynamicJAXBContext> getVersionContextMap() {
return versionContextMap;
}
/**
* Assigns the map of all JAXB context objects.
*
* @param versionContextMap
*/
public static void setVersionContextMap(Map<String, DynamicJAXBContext> versionContextMap) {
OXMModelLoader.versionContextMap = versionContextMap;
}
/**
* Retrieves the list of all Loaded OXM versions.
*
* @return - A List of Strings of all loaded OXM versions.
*
* @throws SpikeException
*/
public static List<String> getLoadedOXMVersions() throws SpikeException {
// If we haven't already loaded in the available OXM models, then do so now.
if (versionContextMap == null || versionContextMap.isEmpty()) {
loadModels();
}
// If there are still no models available, then there's not much we can do...
if (versionContextMap.isEmpty()) {
logger.error(SpikeMsgs.OXM_LOAD_ERROR, "No available OXM schemas to get versions for.");
throw new SpikeException("No available OXM schemas to get latest version for.");
}
List<String> versions = new ArrayList<String>();
for (String versionKey : versionContextMap.keySet()) {
Matcher matcher = versionPattern.matcher(versionKey.toUpperCase());
if (matcher.find()) {
versions.add("V" + matcher.group(1));
}
}
return versions;
}
}
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