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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.zookeeper.server;
import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.Mockito.mock;
import java.io.File;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import org.apache.zookeeper.ZKTestCase;
import org.apache.zookeeper.metrics.MetricsUtils;
import org.apache.zookeeper.proto.ConnectRequest;
import org.apache.zookeeper.server.persistence.FileTxnLog;
import org.apache.zookeeper.server.persistence.FileTxnSnapLog;
import org.apache.zookeeper.server.persistence.SnapStream;
import org.apache.zookeeper.server.persistence.Util;
import org.apache.zookeeper.server.util.QuotaMetricsUtils;
import org.apache.zookeeper.test.ClientBase;
import org.junit.jupiter.api.Test;
public class ZooKeeperServerTest extends ZKTestCase {
@Test
public void testSortDataDirAscending() {
File[] files = new File[5];
files[0] = new File("foo.10027c6de");
files[1] = new File("foo.10027c6df");
files[2] = new File("bar.10027c6dd");
files[3] = new File("foo.10027c6dc");
files[4] = new File("foo.20027c6dc");
File[] orig = files.clone();
List<File> filelist = Util.sortDataDir(files, "foo", true);
assertEquals(orig[2], filelist.get(0));
assertEquals(orig[3], filelist.get(1));
assertEquals(orig[0], filelist.get(2));
assertEquals(orig[1], filelist.get(3));
assertEquals(orig[4], filelist.get(4));
}
@Test
public void testSortDataDirDescending() {
File[] files = new File[5];
files[0] = new File("foo.10027c6de");
files[1] = new File("foo.10027c6df");
files[2] = new File("bar.10027c6dd");
files[3] = new File("foo.10027c6dc");
files[4] = new File("foo.20027c6dc");
File[] orig = files.clone();
List<File> filelist = Util.sortDataDir(files, "foo", false);
assertEquals(orig[4], filelist.get(0));
assertEquals(orig[1], filelist.get(1));
assertEquals(orig[0], filelist.get(2));
assertEquals(orig[3], filelist.get(3));
assertEquals(orig[2], filelist.get(4));
}
@Test
public void testGetLogFiles() {
File[] files = new File[5];
files[0] = new File("log.10027c6de");
files[1] = new File("log.10027c6df");
files[2] = new File("snapshot.10027c6dd");
files[3] = new File("log.10027c6dc");
files[4] = new File("log.20027c6dc");
File[] orig = files.clone();
File[] filelist = FileTxnLog.getLogFiles(files, Long.parseLong("10027c6de", 16));
assertEquals(3, filelist.length);
assertEquals(orig[0], filelist[0]);
assertEquals(orig[1], filelist[1]);
assertEquals(orig[4], filelist[2]);
}
@Test
public void testForceSyncDefaultEnabled() {
File file = new File("foo.10027c6de");
FileTxnLog log = new FileTxnLog(file);
assertTrue(log.isForceSync());
}
@Test
public void testForceSyncDefaultDisabled() {
try {
File file = new File("foo.10027c6de");
System.setProperty("zookeeper.forceSync", "no");
FileTxnLog log = new FileTxnLog(file);
assertFalse(log.isForceSync());
} finally {
//Reset back to default.
System.setProperty("zookeeper.forceSync", "yes");
}
}
@Test
public void testInvalidSnapshot() {
File f = null;
File tmpFileDir = null;
try {
tmpFileDir = ClientBase.createTmpDir();
f = new File(tmpFileDir, "snapshot.0");
if (!f.exists()) {
f.createNewFile();
}
assertFalse(SnapStream.isValidSnapshot(f), "Snapshot file size is greater than 9 bytes");
assertTrue(f.delete(), "Can't delete file");
} catch (IOException e) {
} finally {
if (null != tmpFileDir) {
ClientBase.recursiveDelete(tmpFileDir);
}
}
}
@Test
public void testClientZxidAhead() {
ZooKeeperServer zooKeeperServer = new ZooKeeperServer();
final ZKDatabase zkDatabase = new ZKDatabase(mock(FileTxnSnapLog.class));
zooKeeperServer.setZKDatabase(zkDatabase);
final ConnectRequest request = new ConnectRequest();
request.setProtocolVersion(1);
request.setLastZxidSeen(99L);
request.setTimeOut(500);
request.setSessionId(123L);
request.setPasswd(new byte[]{ 1 });
request.setReadOnly(true);
ServerCnxn.CloseRequestException e = assertThrows(
ServerCnxn.CloseRequestException.class,
() -> zooKeeperServer.processConnectRequest(new MockServerCnxn(), request));
assertEquals(e.getReason(), ServerCnxn.DisconnectReason.CLIENT_ZXID_AHEAD);
}
@Test
public void testUpdateQuotaExceededMetrics() {
final String name = QuotaMetricsUtils.QUOTA_EXCEEDED_ERROR_PER_NAMESPACE;
final String namespace = UUID.randomUUID().toString();
final long count = 3L;
for (int i = 0; i < count; i++) {
ZooKeeperServer.updateQuotaExceededMetrics(namespace);
}
final Map<String, Object> values = MetricsUtils.currentServerMetrics();
assertEquals(1, values.keySet().stream().filter(
key -> key.contains(String.format("%s_%s", namespace, name))).count());
assertEquals(count, values.get(String.format("%s_%s", namespace, name)));
}
@Test
public void testUpdateQuotaExceededMetrics_nullNamespace() {
assertDoesNotThrow(() -> ZooKeeperServer.updateQuotaExceededMetrics(null));
}
}
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