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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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.quorum;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyString;
import static org.mockito.Mockito.doAnswer;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
import java.io.File;
import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.util.HashMap;
import java.util.Map;
import org.apache.jute.OutputArchive;
import org.apache.jute.Record;
import org.apache.zookeeper.PortAssignment;
import org.apache.zookeeper.common.X509Exception;
import org.apache.zookeeper.server.Request;
import org.apache.zookeeper.server.ZKDatabase;
import org.apache.zookeeper.server.persistence.FileTxnSnapLog;
import org.apache.zookeeper.server.quorum.QuorumPeer.LearnerType;
import org.apache.zookeeper.server.quorum.QuorumPeer.QuorumServer;
import org.apache.zookeeper.server.quorum.flexible.QuorumVerifier;
import org.apache.zookeeper.server.util.SerializeUtils;
import org.apache.zookeeper.test.ClientBase;
import org.apache.zookeeper.txn.TxnHeader;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;
public class LeaderBeanTest {
private Leader leader;
private LeaderBean leaderBean;
private FileTxnSnapLog fileTxnSnapLog;
private LeaderZooKeeperServer zks;
private QuorumPeer qp;
private QuorumVerifier quorumVerifierMock;
public static Map<Long, QuorumServer> getMockedPeerViews(long myId) {
int clientPort = PortAssignment.unique();
Map<Long, QuorumServer> peersView = new HashMap<Long, QuorumServer>();
InetAddress clientIP = InetAddress.getLoopbackAddress();
peersView.put(Long.valueOf(myId),
new QuorumServer(myId, new InetSocketAddress(clientIP, PortAssignment.unique()),
new InetSocketAddress(clientIP, PortAssignment.unique()),
new InetSocketAddress(clientIP, clientPort), LearnerType.PARTICIPANT));
return peersView;
}
@BeforeEach
public void setUp() throws IOException, X509Exception {
qp = new QuorumPeer();
quorumVerifierMock = mock(QuorumVerifier.class);
when(quorumVerifierMock.getAllMembers()).thenReturn(getMockedPeerViews(qp.getMyId()));
qp.setQuorumVerifier(quorumVerifierMock, false);
File tmpDir = ClientBase.createEmptyTestDir();
fileTxnSnapLog = new FileTxnSnapLog(new File(tmpDir, "data"), new File(tmpDir, "data_txnlog"));
ZKDatabase zkDb = new ZKDatabase(fileTxnSnapLog);
zks = new LeaderZooKeeperServer(fileTxnSnapLog, qp, zkDb);
leader = new Leader(qp, zks);
leaderBean = new LeaderBean(leader, zks);
}
@AfterEach
public void tearDown() throws IOException {
fileTxnSnapLog.close();
}
@Test
public void testGetName() {
assertEquals("Leader", leaderBean.getName());
}
@Test
public void testGetCurrentZxid() {
// Arrange
zks.setZxid(1);
// Assert
assertEquals("0x1", leaderBean.getCurrentZxid());
}
@Test
public void testGetElectionTimeTaken() {
// Arrange
qp.setElectionTimeTaken(1);
// Assert
assertEquals(1, leaderBean.getElectionTimeTaken());
}
@Test
public void testGetProposalSize() throws IOException, Leader.XidRolloverException {
// Arrange
Request req = createMockRequest();
// Act
leader.propose(req);
// Assert
byte[] data = SerializeUtils.serializeRequest(req);
assertEquals(data.length, leaderBean.getLastProposalSize());
assertEquals(data.length, leaderBean.getMinProposalSize());
assertEquals(data.length, leaderBean.getMaxProposalSize());
}
@Test
public void testResetProposalStats() throws IOException, Leader.XidRolloverException {
// Arrange
int initialProposalSize = leaderBean.getLastProposalSize();
Request req = createMockRequest();
// Act
leader.propose(req);
// Assert
assertNotEquals(initialProposalSize, leaderBean.getLastProposalSize());
leaderBean.resetProposalStatistics();
assertEquals(initialProposalSize, leaderBean.getLastProposalSize());
assertEquals(initialProposalSize, leaderBean.getMinProposalSize());
assertEquals(initialProposalSize, leaderBean.getMaxProposalSize());
}
private Request createMockRequest() throws IOException {
TxnHeader header = mock(TxnHeader.class);
doAnswer(new Answer() {
@Override
public Object answer(InvocationOnMock invocation) throws Throwable {
Object[] args = invocation.getArguments();
OutputArchive oa = (OutputArchive) args[0];
oa.writeString("header", "test");
return null;
}
}).when(header).serialize(any(OutputArchive.class), anyString());
Record txn = mock(Record.class);
doAnswer(new Answer() {
@Override
public Object answer(InvocationOnMock invocation) throws Throwable {
Object[] args = invocation.getArguments();
OutputArchive oa = (OutputArchive) args[0];
oa.writeString("record", "test");
return null;
}
}).when(txn).serialize(any(OutputArchive.class), anyString());
return new Request(1, 2, 3, header, txn, 4);
}
@Test
public void testFollowerInfo() throws IOException {
Map<Long, QuorumServer> votingMembers = new HashMap<Long, QuorumServer>();
votingMembers.put(1L, null);
votingMembers.put(2L, null);
votingMembers.put(3L, null);
when(quorumVerifierMock.getVotingMembers()).thenReturn(votingMembers);
LearnerHandler follower = mock(LearnerHandler.class);
when(follower.getLearnerType()).thenReturn(LearnerType.PARTICIPANT);
when(follower.toString()).thenReturn("1");
when(follower.getSid()).thenReturn(1L);
leader.addLearnerHandler(follower);
leader.addForwardingFollower(follower);
assertEquals("1\n", leaderBean.followerInfo());
assertEquals("", leaderBean.nonVotingFollowerInfo());
LearnerHandler observer = mock(LearnerHandler.class);
when(observer.getLearnerType()).thenReturn(LearnerType.OBSERVER);
when(observer.toString()).thenReturn("2");
leader.addLearnerHandler(observer);
assertEquals("1\n", leaderBean.followerInfo());
assertEquals("", leaderBean.nonVotingFollowerInfo());
LearnerHandler nonVotingFollower = mock(LearnerHandler.class);
when(nonVotingFollower.getLearnerType()).thenReturn(LearnerType.PARTICIPANT);
when(nonVotingFollower.toString()).thenReturn("5");
when(nonVotingFollower.getSid()).thenReturn(5L);
leader.addLearnerHandler(nonVotingFollower);
leader.addForwardingFollower(nonVotingFollower);
String followerInfo = leaderBean.followerInfo();
assertTrue(followerInfo.contains("1"));
assertTrue(followerInfo.contains("5"));
assertEquals("5\n", leaderBean.nonVotingFollowerInfo());
}
}
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