/*
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* The contents of this file are subject to the terms of the Common Development and
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* Distribution License (the License). You may not use this file except in compliance with the
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* License.
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*
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* You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
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* specific language governing permission and limitations under the License.
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*
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* When distributing Covered Software, include this CDDL Header Notice in each file and include
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* the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
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* Header, with the fields enclosed by brackets [] replaced by your own identifying
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* information: "Portions copyright [year] [name of copyright owner]".
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*
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* Copyright 2026 3A Systems, LLC.
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*/
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package org.opends.server.backends.pluggable;
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import static org.assertj.core.api.Assertions.*;
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import static org.opends.server.backends.pluggable.BackendStat.*;
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import org.opends.server.DirectoryServerTestCase;
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import org.testng.annotations.Test;
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/** The figures {@code backendstat show-index-status} works out for each key of an index. */
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@SuppressWarnings("javadoc")
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@Test(groups = { "precommit", "pluggablebackend", "unit" }, sequential = true)
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public class BackendStatTest extends DirectoryServerTestCase
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{
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/** A key is reported as near its limit from 80% of the limit on. */
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@Test
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public void testAKeyIsNearItsLimitFromEightyPercentOn()
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{
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assertThat(nearLimitColumn(79, 100)).isEqualTo(-1);
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assertThat(nearLimitColumn(80, 100)).isNotEqualTo(-1);
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}
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/** An index-entry-limit of 0 is no limit at all, and no key is near it (#1059). */
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@Test
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public void testNoKeyIsNearNoLimit()
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{
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assertThat(nearLimitColumn(1, 0)).isEqualTo(-1);
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assertThat(nearLimitColumn(Integer.MAX_VALUE, 0)).isEqualTo(-1);
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}
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/** The columns are headed 95%, 90% and 80%: the last one counts keys from 80% of the limit (#1135). */
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@Test
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public void testTheColumnsAreHeadedByTheirThresholds()
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{
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assertThat(NEAR_LIMIT_PERCENTS).containsExactly(95, 90, 80);
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assertThat(NEAR_LIMIT_PERCENTS[nearLimitColumn(80, 100)]).isEqualTo(80);
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assertThat(NEAR_LIMIT_PERCENTS[nearLimitColumn(89, 100)]).isEqualTo(80);
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assertThat(NEAR_LIMIT_PERCENTS[nearLimitColumn(90, 100)]).isEqualTo(90);
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assertThat(NEAR_LIMIT_PERCENTS[nearLimitColumn(94, 100)]).isEqualTo(90);
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assertThat(NEAR_LIMIT_PERCENTS[nearLimitColumn(95, 100)]).isEqualTo(95);
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assertThat(NEAR_LIMIT_PERCENTS[nearLimitColumn(100, 100)]).isEqualTo(95);
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}
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/**
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* Every key a column counts holds at least the percentage of the limit that heads the column, and
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* less than the percentage heading the column before it.
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*/
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@Test
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public void testEachColumnCountsTheKeysFromItsHeadingUpToThePreviousOne()
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{
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for (long entryLimit : new long[] { 1, 7, 100, 4000, 4001 })
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{
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for (long size = 0; size <= entryLimit; size++)
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{
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int column = nearLimitColumn(size, entryLimit);
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boolean nearLimit = size * 100 >= entryLimit * NEAR_LIMIT_PERCENTS[NEAR_LIMIT_PERCENTS.length - 1];
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assertThat(column >= 0).as("size %d of %d", size, entryLimit).isEqualTo(nearLimit);
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if (column >= 0)
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{
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assertThat(size * 100).as("size %d of %d", size, entryLimit)
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.isGreaterThanOrEqualTo(entryLimit * NEAR_LIMIT_PERCENTS[column]);
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if (column > 0)
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{
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assertThat(size * 100).as("size %d of %d", size, entryLimit)
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.isLessThan(entryLimit * NEAR_LIMIT_PERCENTS[column - 1]);
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}
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}
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}
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}
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}
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}
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