/*
* Copyright 2012 NGDATA nv
*
* 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.lilyproject.indexer.model.indexerconf;
import java.io.IOException;
import java.util.Collections;
import org.lilyproject.repository.api.LRepository;
import org.lilyproject.repository.api.LTable;
import org.lilyproject.repository.api.Record;
import org.lilyproject.repository.api.RecordNotFoundException;
import org.lilyproject.repository.api.RepositoryException;
import org.lilyproject.repository.api.VersionNotFoundException;
import org.lilyproject.util.repo.VersionTag;
public class MasterFollow implements Follow {
@Override
public void follow(IndexUpdateBuilder indexUpdateBuilder, FollowCallback callback) throws RepositoryException, IOException, InterruptedException {
RecordContext ctx = indexUpdateBuilder.getRecordContext();
if (ctx.dep.id.isMaster()) {
// We're already on a master record, stop here
return;
}
LRepository repository = indexUpdateBuilder.getRepository();
LTable table = repository.getTable(indexUpdateBuilder.getTable());
Dep masterDep = new Dep(ctx.dep.id.getMaster(), Collections.<String>emptySet());
Record master = null;
try {
master = VersionTag.getIdRecord(masterDep.id, indexUpdateBuilder.getVTag(), table, repository);
} catch (RecordNotFoundException e) {
// It's ok that the master does not exist
} catch (VersionNotFoundException e) {
// It's ok that the master does not exist
}
indexUpdateBuilder.push(master, masterDep);
callback.call();
indexUpdateBuilder.pop();
}
}