// Copyright 2017 JanusGraph Authors
//
// 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.janusgraph.diskstorage.log.kcvs;
import com.google.common.collect.Lists;
import org.janusgraph.core.JanusGraphException;
import org.janusgraph.diskstorage.BackendException;
import org.janusgraph.diskstorage.Entry;
import org.janusgraph.diskstorage.StaticBuffer;
import org.janusgraph.diskstorage.keycolumnvalue.cache.CacheTransaction;
import org.janusgraph.diskstorage.keycolumnvalue.cache.KCVSCache;
/**
* @author Matthias Broecheler (me@matthiasb.com)
*/
public class ExternalCachePersistor implements ExternalPersistor {
private final KCVSCache kcvs;
private final CacheTransaction tx;
public ExternalCachePersistor(KCVSCache kcvs, CacheTransaction tx) {
this.kcvs = kcvs;
this.tx = tx;
}
@Override
public void add(StaticBuffer key, Entry cell) {
try {
kcvs.mutateEntries(key, Lists.newArrayList(cell), KCVSCache.NO_DELETIONS,tx);
} catch (BackendException e) {
throw new JanusGraphException("Unexpected storage exception in log persistence against cache",e);
}
}
}