/*
* Copyright (c) 2015, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. licenses this file to you 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.wso2.carbon.mediator.cache.config.xml;
import org.apache.axiom.om.OMElement;
import org.apache.synapse.Mediator;
import org.apache.synapse.config.xml.AbstractMediatorSerializer;
import org.apache.synapse.config.xml.MediatorSerializer;
import org.apache.synapse.config.xml.MediatorSerializerFinder;
import org.wso2.carbon.mediator.cache.CacheMediator;
import java.util.List;
/**
* Serializes the Cache mediator to the XML configuration specified
* <p/>
* <pre>
* <cache [id="string"] [hashGenerator="class"] [timeout="seconds"]
* [scope=(per-host | per-mediator)] collector=(true | false) [maxMessageSize="in-bytes"]>
* <onCacheHit [sequence="key"]>
* (mediator)+
* </onCacheHit>?
* <implementation type=(memory | disk) maxSize="int"/>
* </cache>
* </pre>
*/
public class CacheMediatorSerializer extends AbstractMediatorSerializer {
@Override
public OMElement serializeSpecificMediator(Mediator m) {
if (!(m instanceof CacheMediator)) {
handleException("Unsupported mediator passed in for serialization : " + m.getType());
}
CacheMediator mediator = (CacheMediator) m;
OMElement cache = fac.createOMElement("cache", synNS);
saveTracingState(cache, mediator);
if (mediator.getId() != null) {
cache.addAttribute(fac.createOMAttribute("id", nullNS, mediator.getId()));
}
if (mediator.getScope() != null) {
cache.addAttribute(fac.createOMAttribute("scope", nullNS, mediator.getScope()));
}
if (mediator.isCollector()) {
cache.addAttribute(fac.createOMAttribute("collector", nullNS, "true"));
} else {
cache.addAttribute(fac.createOMAttribute("collector", nullNS, "false"));
if (mediator.getDigestGenerator() != null) {
cache.addAttribute(fac.createOMAttribute("hashGenerator", nullNS,
mediator.getDigestGenerator().getClass().getName()));
}
if (mediator.getTimeout() != 0) {
cache.addAttribute(
fac.createOMAttribute("timeout", nullNS, Long.toString(mediator.getTimeout())));
}
if (mediator.getMaxMessageSize() != 0) {
cache.addAttribute(
fac.createOMAttribute("maxMessageSize", nullNS,
Integer.toString(mediator.getMaxMessageSize())));
}
if (mediator.getOnCacheHitRef() != null) {
OMElement onCacheHit = fac.createOMElement("onCacheHit", synNS);
onCacheHit.addAttribute(
fac.createOMAttribute("sequence", nullNS, mediator.getOnCacheHitRef()));
cache.addChild(onCacheHit);
} else if (mediator.getOnCacheHitSequence() != null) {
OMElement onCacheHit = fac.createOMElement("onCacheHit", synNS);
new CacheMediatorSerializer()
.serializeChildren(onCacheHit, mediator.getOnCacheHitSequence().getList());
cache.addChild(onCacheHit);
}
if (mediator.getInMemoryCacheSize() != 0) {
OMElement implElem = fac.createOMElement("implementation", synNS);
implElem.addAttribute(fac.createOMAttribute("type", nullNS, "memory"));
implElem.addAttribute(fac.createOMAttribute("maxSize", nullNS,
Integer.toString(mediator.getInMemoryCacheSize())));
cache.addChild(implElem);
}
if (mediator.getDiskCacheSize() != 0) {
OMElement implElem = fac.createOMElement("implementation", synNS);
implElem.addAttribute(fac.createOMAttribute("type", nullNS, "disk"));
implElem.addAttribute(fac.createOMAttribute("maxSize", nullNS,
Integer.toString(mediator.getDiskCacheSize())));
cache.addChild(implElem);
}
}
return cache;
}
@Override
public String getMediatorClassName() {
return CacheMediator.class.getName();
}
/**
* Creates XML representation of the child mediators
*
* @param parent The mediator for which the XML representation child should be attached
* @param list The mediators list for which the XML representation should be created
*/
protected void serializeChildren(OMElement parent, List<Mediator> list) {
for (Mediator child : list) {
MediatorSerializer medSer = MediatorSerializerFinder.getInstance().getSerializer(child);
if (medSer != null) {
medSer.serializeMediator(parent, child);
} else {
handleException("Unable to find a serializer for mediator : " + child.getType());
}
}
}
}