/*
* Copyright © 2015 Cask Data, Inc.
*
* 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 co.cask.cdap.logging.save;
import com.google.common.base.Throwables;
import java.io.Flushable;
import java.io.IOException;
import java.util.Map;
/**
* Writes checkpoints of kafka partitions and offsets.
*/
public class CheckPointWriter implements Flushable, Runnable {
private final Map<Integer, Checkpoint> partitionCheckpoints;
private final CheckpointManager checkpointManager;
public CheckPointWriter(CheckpointManager checkpointManager, Map<Integer, Checkpoint> partitionCheckpoints) {
this.partitionCheckpoints = partitionCheckpoints;
this.checkpointManager = checkpointManager;
}
public void updateCheckPoint(Integer partition, Checkpoint checkpoint) {
partitionCheckpoints.put(partition, checkpoint);
}
@Override
public void run() {
checkpoint();
}
@Override
public void flush() throws IOException {
checkpoint();
}
private void checkpoint() {
try {
checkpointManager.saveCheckpoint(partitionCheckpoints);
} catch (Exception e) {
throw Throwables.propagate(e);
}
}
}