/**
* 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 com.twitter.distributedlog;
import com.twitter.distributedlog.util.FutureUtils;
import org.apache.bookkeeper.client.BKException;
import org.apache.bookkeeper.client.BookKeeper;
import org.apache.bookkeeper.client.LedgerHandle;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static com.google.common.base.Charsets.UTF_8;
import static org.junit.Assert.*;
/**
* Test {@link LedgerHandleCache}
*/
public class TestLedgerHandleCache extends TestDistributedLogBase {
static final Logger LOG = LoggerFactory.getLogger(TestLedgerHandleCache.class);
protected static String ledgersPath = "/ledgers";
private ZooKeeperClient zkc;
private BookKeeperClient bkc;
@Before
public void setup() throws Exception {
zkc = TestZooKeeperClientBuilder.newBuilder()
.zkServers(zkServers)
.build();
bkc = BookKeeperClientBuilder.newBuilder()
.name("bkc")
.zkc(zkc)
.ledgersPath(ledgersPath)
.dlConfig(conf)
.build();
}
@After
public void teardown() throws Exception {
bkc.close();
zkc.close();
}
@Test(timeout = 60000, expected = NullPointerException.class)
public void testBuilderWithoutBKC() throws Exception {
LedgerHandleCache.newBuilder().build();
}
@Test(timeout = 60000, expected = NullPointerException.class)
public void testBuilderWithoutStatsLogger() throws Exception {
LedgerHandleCache.newBuilder().bkc(bkc).conf(conf).statsLogger(null).build();
}
@Test(timeout = 60000, expected = BKException.BKBookieHandleNotAvailableException.class)
public void testOpenLedgerWhenBkcClosed() throws Exception {
BookKeeperClient newBkc = BookKeeperClientBuilder.newBuilder().name("newBkc")
.zkc(zkc).ledgersPath(ledgersPath).dlConfig(conf).build();
LedgerHandleCache cache =
LedgerHandleCache.newBuilder().bkc(newBkc).conf(conf).build();
// closed the bkc
newBkc.close();
// open ledger after bkc closed.
cache.openLedger(new LogSegmentMetadata.LogSegmentMetadataBuilder("", 2, 1, 1).setRegionId(1).build(), false);
}
@Test(timeout = 60000, expected = BKException.ZKException.class)
public void testOpenLedgerWhenZkClosed() throws Exception {
ZooKeeperClient newZkc = TestZooKeeperClientBuilder.newBuilder()
.name("zkc-openledger-when-zk-closed")
.zkServers(zkServers)
.build();
BookKeeperClient newBkc = BookKeeperClientBuilder.newBuilder()
.name("bkc-openledger-when-zk-closed")
.zkc(newZkc)
.ledgersPath(ledgersPath)
.dlConfig(conf)
.build();
try {
LedgerHandle lh = newBkc.get().createLedger(BookKeeper.DigestType.CRC32, "zkcClosed".getBytes(UTF_8));
lh.close();
newZkc.close();
LedgerHandleCache cache =
LedgerHandleCache.newBuilder().bkc(newBkc).conf(conf).build();
// open ledger after zkc closed
cache.openLedger(new LogSegmentMetadata.LogSegmentMetadataBuilder("",
2, lh.getId(), 1).setLogSegmentSequenceNo(lh.getId()).build(), false);
} finally {
newBkc.close();
}
}
@Test(timeout = 60000, expected = BKException.BKUnexpectedConditionException.class)
public void testReadLastConfirmedWithoutOpeningLedger() throws Exception {
LedgerDescriptor desc = new LedgerDescriptor(9999, 9999, false);
LedgerHandleCache cache =
LedgerHandleCache.newBuilder().bkc(bkc).conf(conf).build();
// read last confirmed
cache.tryReadLastConfirmed(desc);
}
@Test(timeout = 60000, expected = BKException.BKUnexpectedConditionException.class)
public void testReadEntriesWithoutOpeningLedger() throws Exception {
LedgerDescriptor desc = new LedgerDescriptor(9999, 9999, false);
LedgerHandleCache cache =
LedgerHandleCache.newBuilder().bkc(bkc).conf(conf).build();
// read entries
cache.readEntries(desc, 0, 10);
}
@Test(timeout = 60000, expected = BKException.BKUnexpectedConditionException.class)
public void testGetLastConfirmedWithoutOpeningLedger() throws Exception {
LedgerDescriptor desc = new LedgerDescriptor(9999, 9999, false);
LedgerHandleCache cache =
LedgerHandleCache.newBuilder().bkc(bkc).conf(conf).build();
// read entries
cache.getLastAddConfirmed(desc);
}
@Test(timeout = 60000, expected = BKException.BKUnexpectedConditionException.class)
public void testReadLastConfirmedAndEntryWithoutOpeningLedger() throws Exception {
LedgerDescriptor desc = new LedgerDescriptor(9999, 9999, false);
LedgerHandleCache cache =
LedgerHandleCache.newBuilder().bkc(bkc).conf(conf).build();
// read entries
FutureUtils.bkResult(cache.asyncReadLastConfirmedAndEntry(desc, 1L, 200L, false));
}
@Test(timeout = 60000, expected = BKException.BKUnexpectedConditionException.class)
public void testGetLengthWithoutOpeningLedger() throws Exception {
LedgerDescriptor desc = new LedgerDescriptor(9999, 9999, false);
LedgerHandleCache cache =
LedgerHandleCache.newBuilder().bkc(bkc).conf(conf).build();
// read entries
cache.getLength(desc);
}
@Test(timeout = 60000)
public void testOpenAndCloseLedger() throws Exception {
LedgerHandle lh = bkc.get().createLedger(1, 1, 1,
BookKeeper.DigestType.CRC32, conf.getBKDigestPW().getBytes(UTF_8));
LedgerHandleCache cache =
LedgerHandleCache.newBuilder().bkc(bkc).conf(conf).build();
LogSegmentMetadata segment = new LogSegmentMetadata.LogSegmentMetadataBuilder(
"/data", LogSegmentMetadata.LogSegmentMetadataVersion.VERSION_V5_SEQUENCE_ID, lh.getId(), 0L)
.build();
LedgerDescriptor desc1 = cache.openLedger(segment, false);
assertTrue(cache.handlesMap.containsKey(desc1));
LedgerHandleCache.RefCountedLedgerHandle refLh = cache.handlesMap.get(desc1);
assertEquals(1, refLh.getRefCount());
cache.openLedger(segment, false);
assertTrue(cache.handlesMap.containsKey(desc1));
assertEquals(2, refLh.getRefCount());
// close the ledger
cache.closeLedger(desc1);
assertTrue(cache.handlesMap.containsKey(desc1));
assertEquals(1, refLh.getRefCount());
cache.closeLedger(desc1);
assertFalse(cache.handlesMap.containsKey(desc1));
assertEquals(0, refLh.getRefCount());
}
}