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ManagedLedgerImplUtilsTest.java
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ManagedLedgerImplUtilsTest.java
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/*
* 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.bookkeeper.mledger.util;
import static java.nio.charset.StandardCharsets.UTF_8;
import static org.testng.Assert.assertEquals;
import java.nio.charset.StandardCharsets;
import java.util.function.Predicate;
import lombok.extern.slf4j.Slf4j;
import org.apache.bookkeeper.mledger.Entry;
import org.apache.bookkeeper.mledger.ManagedLedger;
import org.apache.bookkeeper.mledger.ManagedLedgerConfig;
import org.apache.bookkeeper.mledger.Position;
import org.apache.bookkeeper.mledger.impl.ManagedLedgerImpl;
import org.apache.bookkeeper.mledger.impl.PositionImpl;
import org.apache.bookkeeper.test.MockedBookKeeperTestCase;
import org.testng.annotations.Test;
@Slf4j
public class ManagedLedgerImplUtilsTest extends MockedBookKeeperTestCase {
@Test
public void testGetLastValidPosition() throws Exception {
final int maxEntriesPerLedger = 5;
ManagedLedgerConfig managedLedgerConfig = new ManagedLedgerConfig();
managedLedgerConfig.setMaxEntriesPerLedger(maxEntriesPerLedger);
ManagedLedger ledger = factory.open("testReverseFindPositionOneByOne", managedLedgerConfig);
String matchEntry = "match-entry";
String noMatchEntry = "nomatch-entry";
Predicate<Entry> predicate = entry -> {
String entryValue = entry.getDataBuffer().toString(UTF_8);
return matchEntry.equals(entryValue);
};
// New ledger will return the last position, regardless of whether the conditions are met or not.
Position position = ManagedLedgerImplUtils.asyncGetLastValidPosition((ManagedLedgerImpl) ledger,
predicate, (PositionImpl) ledger.getLastConfirmedEntry()).get();
assertEquals(ledger.getLastConfirmedEntry(), position);
for (int i = 0; i < maxEntriesPerLedger - 1; i++) {
ledger.addEntry(matchEntry.getBytes(StandardCharsets.UTF_8));
}
Position lastMatchPosition = ledger.addEntry(matchEntry.getBytes(StandardCharsets.UTF_8));
for (int i = 0; i < maxEntriesPerLedger; i++) {
ledger.addEntry(noMatchEntry.getBytes(StandardCharsets.UTF_8));
}
// Returns last position of entry is "match-entry"
position = ManagedLedgerImplUtils.asyncGetLastValidPosition((ManagedLedgerImpl) ledger,
predicate, (PositionImpl) ledger.getLastConfirmedEntry()).get();
assertEquals(position, lastMatchPosition);
ledger.close();
}
}