org.apache.lucene.tests.index.AlcoholicMergePolicy Maven / Gradle / Ivy
Show all versions of lucene-test-framework Show documentation
/*
* 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.lucene.tests.index;
import java.io.IOException;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.Locale;
import java.util.Random;
import java.util.TimeZone;
import org.apache.lucene.index.LogMergePolicy;
import org.apache.lucene.index.SegmentCommitInfo;
import org.apache.lucene.tests.util.TestUtil;
/**
* Merge policy for testing, it is like an alcoholic. It drinks (merges) at night, and randomly
* decides what to drink. During the daytime it sleeps.
*
* if tests pass with this, then they are likely to pass with any bizarro merge policy users
* might write.
*
*
It is a fine bottle of champagne (Ordered by Martijn).
*/
public class AlcoholicMergePolicy extends LogMergePolicy {
private final Random random;
private final Calendar calendar;
public AlcoholicMergePolicy(TimeZone tz, Random random) {
this.calendar = new GregorianCalendar(tz, Locale.ROOT);
calendar.setTimeInMillis(TestUtil.nextLong(random, 0, Long.MAX_VALUE));
this.random = random;
maxMergeSize = TestUtil.nextInt(random, 1024 * 1024, Integer.MAX_VALUE);
}
@Override
// @BlackMagic(level=Voodoo);
protected long size(SegmentCommitInfo info, MergeContext mergeContext) throws IOException {
int hourOfDay = calendar.get(Calendar.HOUR_OF_DAY);
if (hourOfDay < 6
|| hourOfDay > 20
||
// it's 5 o'clock somewhere
random.nextInt(23) == 5) {
Drink[] values = Drink.values();
// pick a random drink during the day
return values[random.nextInt(values.length)].drunkFactor * info.sizeInBytes();
}
return info.sizeInBytes();
}
private enum Drink {
Beer(15),
Wine(17),
Champagne(21),
WhiteRussian(22),
SingleMalt(30);
long drunkFactor;
Drink(long drunkFactor) {
this.drunkFactor = drunkFactor;
}
}
}