/*
* (C) Copyright 2013 Nuxeo SA (http://nuxeo.com/) and others.
*
* 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.
*
* Contributors:
* Vladimir Pasquier <vpasquier@nuxeo.com>
*/
package org.nuxeo.ecm.automation.core.exception;
import java.util.HashMap;
import java.util.Map;
import org.nuxeo.ecm.automation.ChainException;
import org.nuxeo.ecm.automation.OperationException;
import org.nuxeo.runtime.model.ContributionFragmentRegistry;
/**
* @since 5.7.3
*/
public class ChainExceptionRegistry extends ContributionFragmentRegistry<ChainException> {
/**
* Modifiable automation filter registry. Modifying the registry is using a lock and it's thread safe. Modifications
* are removing the cache.
*/
protected final Map<String, ChainException> chainExceptions = new HashMap<>();
/**
* Read only cache for automation filter lookup. Thread safe. Not using synchronization if cache already created.
*/
protected volatile Map<String, ChainException> lookup;
public synchronized void addContribution(ChainException chainException, boolean replace) throws OperationException {
if (!replace && chainExceptions.containsKey(chainException.getId())) {
throw new OperationException("An exception chain is already bound to: " + chainException.getId()
+ ". Use 'replace=true' to replace an existing exception chain");
}
super.addContribution(chainException);
}
@Override
public boolean isSupportingMerge() {
return false;
}
@Override
public String getContributionId(ChainException contrib) {
return contrib.getId();
}
@Override
public void contributionUpdated(String id, ChainException contrib, ChainException newOrigContrib) {
chainExceptions.put(id, contrib);
lookup = null;
}
@Override
public void contributionRemoved(String id, ChainException origContrib) {
chainExceptions.remove(id);
lookup = null;
}
@Override
public ChainException clone(ChainException orig) {
throw new UnsupportedOperationException();
}
@Override
public void merge(ChainException src, ChainException dst) {
throw new UnsupportedOperationException();
}
public Map<String, ChainException> lookup() {
Map<String, ChainException> _lookup = lookup;
if (_lookup == null) {
synchronized (this) {
lookup = new HashMap<String, ChainException>(chainExceptions);
_lookup = lookup;
}
}
return _lookup;
}
public ChainException getChainException(String onChainId) {
for (ChainException chainException : lookup().values()) {
if (onChainId.equals(chainException.getOnChainId())) {
return chainException;
}
}
return null;
}
}