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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.quorum;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.util.HashMap;
import java.util.Map;
import org.apache.zookeeper.PortAssignment;
import org.apache.zookeeper.common.X509Exception;
import org.apache.zookeeper.server.ServerCnxn;
import org.apache.zookeeper.server.ServerCnxnFactory;
import org.apache.zookeeper.server.ZKDatabase;
import org.apache.zookeeper.server.ZooKeeperServer;
import org.apache.zookeeper.server.persistence.FileTxnSnapLog;
import org.apache.zookeeper.server.quorum.flexible.QuorumMaj;
import org.apache.zookeeper.test.ClientBase;
public class ZabUtils {
private ZabUtils() {
}
public static final int SYNC_LIMIT = 2;
public static QuorumPeer createQuorumPeer(File tmpDir) throws IOException {
HashMap<Long, QuorumPeer.QuorumServer> peers = new HashMap<Long, QuorumPeer.QuorumServer>();
QuorumPeer peer = QuorumPeer.testingQuorumPeer();
peer.syncLimit = SYNC_LIMIT;
peer.initLimit = 2;
peer.tickTime = 2000;
peers.put(0L, new QuorumPeer.QuorumServer(0, new InetSocketAddress("127.0.0.1", PortAssignment.unique()), new InetSocketAddress("127.0.0.1", PortAssignment.unique()), new InetSocketAddress("127.0.0.1", PortAssignment.unique())));
peers.put(1L, new QuorumPeer.QuorumServer(1, new InetSocketAddress("127.0.0.1", PortAssignment.unique()), new InetSocketAddress("127.0.0.1", PortAssignment.unique()), new InetSocketAddress("127.0.0.1", PortAssignment.unique())));
peers.put(2L, new QuorumPeer.QuorumServer(2, new InetSocketAddress("127.0.0.1", PortAssignment.unique()), new InetSocketAddress("127.0.0.1", PortAssignment.unique()), new InetSocketAddress("127.0.0.1", PortAssignment.unique())));
peer.setQuorumVerifier(new QuorumMaj(peers), false);
peer.setCnxnFactory(new NullServerCnxnFactory());
File version2 = new File(tmpDir, "version-2");
version2.mkdir();
ClientBase.createInitializeFile(tmpDir);
FileOutputStream fos = new FileOutputStream(new File(version2, "currentEpoch"));
fos.write("0\n".getBytes());
fos.close();
fos = new FileOutputStream(new File(version2, "acceptedEpoch"));
fos.write("0\n".getBytes());
fos.close();
return peer;
}
public static Leader createLeader(File tmpDir, QuorumPeer peer) throws IOException, NoSuchFieldException, IllegalAccessException, X509Exception {
LeaderZooKeeperServer zk = prepareLeader(tmpDir, peer);
return new Leader(peer, zk);
}
public static Leader createMockLeader(File tmpDir, QuorumPeer peer) throws IOException, NoSuchFieldException, IllegalAccessException, X509Exception {
LeaderZooKeeperServer zk = prepareLeader(tmpDir, peer);
return new MockLeader(peer, zk);
}
private static LeaderZooKeeperServer prepareLeader(File tmpDir, QuorumPeer peer) throws IOException, NoSuchFieldException, IllegalAccessException {
FileTxnSnapLog logFactory = new FileTxnSnapLog(tmpDir, tmpDir);
peer.setTxnFactory(logFactory);
ZKDatabase zkDb = new ZKDatabase(logFactory);
LeaderZooKeeperServer zk = new LeaderZooKeeperServer(logFactory, peer, zkDb);
return zk;
}
private static final class NullServerCnxnFactory extends ServerCnxnFactory {
public void startup(ZooKeeperServer zkServer, boolean startServer) throws IOException, InterruptedException {
}
public void start() {
}
public void shutdown() {
}
public void setMaxClientCnxnsPerHost(int max) {
}
public void join() throws InterruptedException {
}
public int getMaxClientCnxnsPerHost() {
return 0;
}
public int getSocketListenBacklog() {
return -1;
}
public int getLocalPort() {
return 0;
}
public InetSocketAddress getLocalAddress() {
return null;
}
public Iterable<ServerCnxn> getConnections() {
return null;
}
public void configure(InetSocketAddress addr, int maxcc, int listenBacklog, boolean secure) throws IOException {
}
@Override
public boolean closeSession(long sessionId, ServerCnxn.DisconnectReason reason) {
return false;
}
@Override
public void closeAll(ServerCnxn.DisconnectReason reason) {
}
@Override
public int getNumAliveConnections() {
return 0;
}
@Override
public void reconfigure(InetSocketAddress addr) {
}
@Override
public void resetAllConnectionStats() {
}
@Override
public Iterable<Map<String, Object>> getAllConnectionInfo(boolean brief) {
return null;
}
}
public static final class MockLeader extends Leader {
MockLeader(QuorumPeer qp, LeaderZooKeeperServer zk) throws IOException, X509Exception {
super(qp, zk);
}
/**
* This method returns the value of the variable that holds the epoch
* to be proposed and that has been proposed, depending on the point
* of the execution in which it is called.
*
* @return epoch
*/
public long getCurrentEpochToPropose() {
return epoch;
}
}
}
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