org.apache.solr.update.VersionBucket 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.solr.update;
import java.io.IOException;
import java.util.concurrent.TimeUnit;
// TODO: make inner?
// TODO: store the highest possible in the index on a commit (but how to not block adds?)
// TODO: could also store highest possible in the transaction log after a commit.
// Or on a new index, just scan "version" for the max?
/** @lucene.internal */
/**
* The default implementation which uses the intrinsic object monitor.
* It uses less memory but ignores the lockTimeoutMs.
*/
public class VersionBucket {
public long highest;
public void updateHighest(long val) {
if (highest != 0) {
highest = Math.max(highest, Math.abs(val));
}
}
@FunctionalInterface
public interface CheckedFunction {
R apply() throws IOException;
}
/**
* This will run the function with the intrinsic object monitor.
*/
public R runWithLock(int lockTimeoutMs, CheckedFunction function) throws IOException {
synchronized (this) {
return function.apply();
}
}
/**
* Nothing to do for the intrinsic object monitor.
*/
public void unlock() {
}
public void signalAll() {
notifyAll();
}
public void awaitNanos(long nanosTimeout) {
try {
long millis = TimeUnit.NANOSECONDS.toMillis(nanosTimeout);
if (millis > 0) {
wait(millis);
}
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
}