/*
* 2012-3 Red Hat Inc. and/or its affiliates and other contributors.
*
* 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.
*/
package org.overlord.rtgov.content.epn;
import java.io.Serializable;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.overlord.rtgov.activity.model.ActivityUnit;
import org.overlord.rtgov.activity.util.ActivityUtil;
import org.overlord.rtgov.analytics.service.ServiceDefinition;
import org.overlord.rtgov.analytics.util.ServiceDefinitionUtil;
/**
* This class provides an implementation of the EventProcessor
* interface, used to derive service definitions from the
* stream of activity units.
*
*/
public class ServiceDefinitionProcessor extends org.overlord.rtgov.ep.EventProcessor {
private static final Logger LOG=Logger.getLogger(ServiceDefinitionProcessor.class.getName());
/**
* {@inheritDoc}
*/
@SuppressWarnings("unchecked")
@Override
public Serializable process(String source, Serializable event,
int retriesLeft) throws Exception {
Serializable ret=null;
if (event instanceof ActivityUnit) {
java.util.Iterator<ServiceDefinition> iter=
ServiceDefinitionUtil.derive((ActivityUnit)event).iterator();
while (iter.hasNext()) {
if (ret == null) {
ret = new java.util.LinkedList<ServiceDefinition>();
}
((java.util.LinkedList<ServiceDefinition>)ret).add(iter.next());
}
if (LOG.isLoggable(Level.FINEST)) {
java.util.LinkedList<ServiceDefinition> list=
(java.util.LinkedList<ServiceDefinition>)ret;
byte[] aub=ActivityUtil.serializeActivityUnit((ActivityUnit)event);
LOG.finest("Transforming activity unit: "+new String(aub));
if (list != null) {
LOG.finest("Service definition list size="+list.size());
for (int i=0; i < list.size(); i++) {
byte[] sdb=ServiceDefinitionUtil.serializeServiceDefinition(list.get(i));
LOG.finest("Service definition("+i+"): "+new String(sdb));
}
} else {
LOG.finest("Service definition list is null");
}
}
if (ret != null) {
if (((java.util.LinkedList<Serializable>)ret).size() == 0) {
ret = null;
} else if (((java.util.LinkedList<Serializable>)ret).size() == 1) {
ret = ((java.util.LinkedList<Serializable>)ret).getFirst();
}
}
}
return (ret);
}
}