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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.client;
import static org.apache.bookkeeper.client.api.BKException.Code.WriteException;
import static org.apache.bookkeeper.common.concurrent.FutureUtils.result;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
import java.nio.ByteBuffer;
import org.apache.bookkeeper.client.api.WriteHandle;
import org.apache.bookkeeper.conf.ClientConfiguration;
import org.junit.Test;
/**
* Test ensemble change has a max num.
*/
public class TestMaxEnsembleChangeNum extends MockBookKeeperTestCase {
private static final byte[] password = new byte[5];
private static final byte[] data = new byte[5];
@Test
public void testChangeEnsembleMaxNumWithWriter() throws Exception {
long lId;
int numEntries = 5;
int changeNum = 5;
setBookKeeperConfig(new ClientConfiguration().setDelayEnsembleChange(false).setMaxAllowedEnsembleChanges(5));
try (WriteHandle writer = result(newCreateLedgerOp()
.withAckQuorumSize(3)
.withWriteQuorumSize(3)
.withEnsembleSize(3)
.withPassword(password)
.execute())) {
lId = writer.getId();
//first fragment
for (int i = 0; i < numEntries; i++) {
writer.append(ByteBuffer.wrap(data));
}
assertEquals("There should be zero ensemble change",
1, getLedgerMetadata(lId).getAllEnsembles().size());
simulateEnsembleChangeWithWriter(changeNum, numEntries, writer);
// one more ensemble change
startNewBookie();
killBookie(writer.getLedgerMetadata().getEnsembleAt(writer.getLastAddConfirmed()).get(0));
// add failure
try {
writer.append(ByteBuffer.wrap(data));
fail("should not come to here");
} catch (BKException exception){
assertEquals(exception.getCode(), WriteException);
}
}
}
private void simulateEnsembleChangeWithWriter(int changeNum, int numEntries, WriteHandle writer) throws Exception{
int expectedSize = writer.getLedgerMetadata().getAllEnsembles().size() + 1;
//kill bookie and add again
for (int num = 0; num < changeNum; num++){
startNewBookie();
killBookie(writer.getLedgerMetadata().getEnsembleAt(writer.getLastAddConfirmed()).get(0));
for (int i = 0; i < numEntries; i++) {
writer.append(ByteBuffer.wrap(data));
}
// ensure there is a ensemble changed
assertEquals("There should be one ensemble change",
expectedSize + num, writer.getLedgerMetadata().getAllEnsembles().size());
}
}
}