com.netflix.astyanax.shallows.EmptyCheckpointManager Maven / Gradle / Ivy
/*******************************************************************************
* Copyright 2011 Netflix
*
* 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 com.netflix.astyanax.shallows;
import java.util.SortedMap;
import java.util.concurrent.ConcurrentMap;
import com.google.common.collect.Maps;
import com.netflix.astyanax.connectionpool.exceptions.ConnectionException;
import com.netflix.astyanax.query.CheckpointManager;
public class EmptyCheckpointManager implements CheckpointManager {
private ConcurrentMap tokenMap = Maps.newConcurrentMap();
/**
* Do nothing since checkpoints aren't being persisted.
*/
@Override
public void trackCheckpoint(String startToken, String checkpointToken) {
tokenMap.put(startToken, checkpointToken);
}
/**
* Since no checkpoint management is done here simply use the startToken as the
* start checkpoint for the range
*/
@Override
public String getCheckpoint(String startToken) {
return tokenMap.get(startToken);
}
@Override
public SortedMap getCheckpoints() throws ConnectionException {
return Maps.newTreeMap();
}
}