org.apache.ratis.server.raftlog.RaftLogIndex Maven / Gradle / Ivy
/*
* 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.ratis.server.raftlog;
import org.apache.ratis.util.Preconditions;
import org.apache.ratis.util.StringUtils;
import java.util.concurrent.atomic.AtomicLong;
import java.util.function.Consumer;
import java.util.function.LongUnaryOperator;
/**
* Indices of a raft log such as commit index, match index, etc.
*
* This class is thread safe.
*/
public class RaftLogIndex {
private final Object name;
private final AtomicLong index;
public RaftLogIndex(Object name, long initialValue) {
this.name = name;
this.index = new AtomicLong(initialValue);
}
public long get() {
return index.get();
}
public boolean setUnconditionally(long newIndex, Consumer