/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.apache.activemq.artemis.core.journal.impl;
import java.util.ArrayList;
import java.util.List;
import org.apache.activemq.artemis.api.core.Pair;
/**
* This holds the relationship a record has with other files in regard to reference counting.
* Note: This class used to be called PosFiles
*
* Used on the ref-count for reclaiming
*/
public class JournalRecord {
private final JournalFile addFile;
private final int size;
private List<Pair<JournalFile, Integer>> updateFiles;
public JournalRecord(final JournalFile addFile, final int size) {
this.addFile = addFile;
this.size = size;
addFile.incPosCount();
addFile.addSize(size);
}
void addUpdateFile(final JournalFile updateFile, final int size) {
if (updateFiles == null) {
updateFiles = new ArrayList<>();
}
updateFiles.add(new Pair<>(updateFile, size));
updateFile.incPosCount();
updateFile.addSize(size);
}
void delete(final JournalFile file) {
file.incNegCount(addFile);
addFile.decSize(size);
if (updateFiles != null) {
for (Pair<JournalFile, Integer> updFile : updateFiles) {
file.incNegCount(updFile.getA());
updFile.getA().decSize(updFile.getB());
}
}
}
@Override
public String toString() {
StringBuilder buffer = new StringBuilder();
buffer.append("JournalRecord(add=" + addFile.getFile().getFileName());
if (updateFiles != null) {
for (Pair<JournalFile, Integer> update : updateFiles) {
buffer.append(", update=" + update.getA().getFile().getFileName());
}
}
buffer.append(")");
return buffer.toString();
}
}