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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you 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.elasticsearch.index.translog;
import org.apache.lucene.util.IOUtils;
import org.elasticsearch.common.util.Callback;
import org.elasticsearch.common.util.concurrent.AbstractRefCounted;
import java.io.IOException;
import java.nio.channels.FileChannel;
import java.nio.file.*;
final class ChannelReference extends AbstractRefCounted {
private final Path file;
private final FileChannel channel;
protected final long generation;
private final Callback onClose;
ChannelReference(Path file, long generation, FileChannel channel, Callback onClose) throws IOException {
super(file.toString());
this.generation = generation;
this.file = file;
this.channel = channel;
this.onClose = onClose;
}
public long getGeneration() {
return generation;
}
public Path getPath() {
return this.file;
}
public FileChannel getChannel() {
return this.channel;
}
@Override
public String toString() {
return "channel: file [" + file + "], ref count [" + refCount() + "]";
}
@Override
protected void closeInternal() {
try {
IOUtils.closeWhileHandlingException(channel);
} finally {
if (onClose != null) {
onClose.handle(this);
}
}
}
}