public static void createAndStartZooKeeper() 
  throws IOException, ConfigException, InterruptedException {
  ServerConfig zkConf = createZooKeeperConf();

  zooKeeper = new ZooKeeperServer();
  FileTxnSnapLog ftxn = new 
    FileTxnSnapLog(new File(zkConf.getDataLogDir()),
                   new File(zkConf.getDataDir()));
  zooKeeper.setTxnLogFactory(ftxn);
  zooKeeper.setTickTime(zkConf.getTickTime());
  zooKeeper.setMinSessionTimeout(zkConf.getMinSessionTimeout());
  zooKeeper.setMaxSessionTimeout(zkConf.getMaxSessionTimeout());

  cnxnFactory =
    new NIOServerCnxn.Factory(zkConf.getClientPortAddress(),
                              zkConf.getMaxClientCnxns());
  cnxnFactory.startup(zooKeeper);

}
 

/**
 * Starts zookeeper up on an ephemeral port.
 */
public void startNetwork() throws IOException, InterruptedException {
  zooKeeperServer =
      new ZooKeeperServer(
          new FileTxnSnapLog(dataDir, snapDir),
          new BasicDataTreeBuilder()) {

        // TODO(John Sirois): Introduce a builder to configure the in-process server if and when
        // some folks need JMX for in-process tests.
        @Override protected void registerJMX() {
          // noop
        }
      };

  connectionFactory = new NIOServerCnxnFactory();
  connectionFactory.configure(
      new InetSocketAddress(port),
      60 /* Semi-arbitrary, max 60 connections is the default used by NIOServerCnxnFactory */);
  connectionFactory.startup(zooKeeperServer);
  port = zooKeeperServer.getClientPort();
}
 

public void afterPropertiesSet() throws Exception {
    if (purge) {
        deleteFilesInDir(getDataLogDir());
        deleteFilesInDir(getDataDir());
    }
    FileTxnSnapLog ftxn = new FileTxnSnapLog(getDataLogDir(), getDataDir());
    zooKeeperServer.setTxnLogFactory(ftxn);
    zooKeeperServer.setTickTime(getTickTime());
    zooKeeperServer.setMinSessionTimeout(getMinSessionTimeout());
    zooKeeperServer.setMaxSessionTimeout(getMaxSessionTimeout());
    connectionFactory = new NIOServerCnxnFactory() {
        @Override
        protected void configureSaslLogin() throws IOException {
            // do nothing
        }
    };
    connectionFactory.configure(getClientPortAddress(), getMaxClientConnections());
    connectionFactory.startup(zooKeeperServer);
}
 

public EmbeddedZookeeper(int port, Path baseDir) throws Exception {
    this.port = port;

    zookeeperBaseDir = baseDir;

    zkServer = new ZooKeeperServer();
    File dataDir = zookeeperBaseDir.resolve("log").toFile();
    File snapDir = zookeeperBaseDir.resolve("data").toFile();
    FileTxnSnapLog ftxn = new FileTxnSnapLog(dataDir, snapDir);
    zkServer.setTxnLogFactory(ftxn);
    zkServer.setTickTime(1000);
    connectionFactory = new NIOServerCnxnFactory() {
        @Override
        protected void configureSaslLogin() throws IOException {
            // do nothing
        }
    };
    connectionFactory.configure(new InetSocketAddress("localhost", port), 0);
}
 

public ZookeeperServer(File root) throws IOException, InterruptedException {
    zkServer = new ZooKeeperServer();

    File dataDir = new File(root, "log");
    File snapDir = new File(root, "data");
    FileTxnSnapLog ftxn = new FileTxnSnapLog(dataDir, snapDir);

    zkServer.setTxnLogFactory(ftxn);
    zkServer.setTickTime(1000);

    connectionFactory = new NIOServerCnxnFactory();
    connectionFactory.configure(new InetSocketAddress("localhost", SocketUtils.findAvailableTcpPort()), 0);
    connectionFactory.startup(zkServer);
}
 

private void startDistributed() throws IOException {
    logger.info("Starting Embedded ZooKeeper Peer");

    try {
        transactionLog = new FileTxnSnapLog(new File(quorumPeerConfig.getDataLogDir()), new File(quorumPeerConfig.getDataDir()));

        connectionFactory = ServerCnxnFactory.createFactory();
        connectionFactory.configure(quorumPeerConfig.getClientPortAddress(), quorumPeerConfig.getMaxClientCnxns());

        quorumPeer = new QuorumPeer();
        quorumPeer.setClientPortAddress(quorumPeerConfig.getClientPortAddress());
        quorumPeer.setTxnFactory(new FileTxnSnapLog(new File(quorumPeerConfig.getDataLogDir()), new File(quorumPeerConfig.getDataDir())));
        quorumPeer.setQuorumPeers(quorumPeerConfig.getServers());
        quorumPeer.setElectionType(quorumPeerConfig.getElectionAlg());
        quorumPeer.setMyid(quorumPeerConfig.getServerId());
        quorumPeer.setTickTime(quorumPeerConfig.getTickTime());
        quorumPeer.setMinSessionTimeout(quorumPeerConfig.getMinSessionTimeout());
        quorumPeer.setMaxSessionTimeout(quorumPeerConfig.getMaxSessionTimeout());
        quorumPeer.setInitLimit(quorumPeerConfig.getInitLimit());
        quorumPeer.setSyncLimit(quorumPeerConfig.getSyncLimit());
        quorumPeer.setQuorumVerifier(quorumPeerConfig.getQuorumVerifier());
        quorumPeer.setCnxnFactory(connectionFactory);
        quorumPeer.setZKDatabase(new ZKDatabase(quorumPeer.getTxnFactory()));
        quorumPeer.setLearnerType(quorumPeerConfig.getPeerType());
        quorumPeer.setSyncEnabled(quorumPeerConfig.getSyncEnabled());
        quorumPeer.setQuorumListenOnAllIPs(quorumPeerConfig.getQuorumListenOnAllIPs());

        quorumPeer.start();
    } catch (final IOException ioe) {
        throw new IOException("Failed to start embedded ZooKeeper Peer", ioe);
    } catch (final Exception e) {
        throw new RuntimeException("Failed to start embedded ZooKeeper Peer", e);
    }
}
 

/**
 * Startup: start ZK. It is only after this that
 * the binding information is valid.
 * @throws Exception
 */
@Override
protected void serviceStart() throws Exception {

  setupSecurity();

  ZooKeeperServer zkServer = new ZooKeeperServer();
  FileTxnSnapLog ftxn = new FileTxnSnapLog(dataDir, dataDir);
  zkServer.setTxnLogFactory(ftxn);
  zkServer.setTickTime(tickTime);

  LOG.info("Starting Local Zookeeper service");
  factory = ServerCnxnFactory.createFactory();
  factory.configure(getAddress(port), -1);
  factory.startup(zkServer);

  String connectString = getConnectionString();
  LOG.info("In memory ZK started at {}\n", connectString);

  if (LOG.isDebugEnabled()) {
    StringWriter sw = new StringWriter();
    PrintWriter pw = new PrintWriter(sw);
    zkServer.dumpConf(pw);
    pw.flush();
    LOG.debug(sw.toString());
  }
  binding = new BindingInformation();
  binding.ensembleProvider = new FixedEnsembleProvider(connectString);
  binding.description =
      getName() + " reachable at \"" + connectString + "\"";

  addDiagnostics(binding.description);
  // finally: set the binding information in the config
  getConfig().set(KEY_REGISTRY_ZK_QUORUM, connectString);
}
 

private QuorumPeer createPeer(ServerCnxnFactory cnxnFactory, QuorumPeerConfig config) throws IOException {
    cnxnFactory.configure(config.getClientPortAddress(),
            config.getMaxClientCnxns());

    QuorumPeer quorumPeer = new QuorumPeer();
    quorumPeer.setClientPortAddress(config.getClientPortAddress());
    quorumPeer.setTxnFactory(new FileTxnSnapLog(
            new File(config.getDataLogDir()),
            new File(config.getDataDir())));
    quorumPeer.setQuorumPeers(config.getServers());
    quorumPeer.setElectionType(config.getElectionAlg());
    quorumPeer.setMyid(config.getServerId());
    quorumPeer.setTickTime(config.getTickTime());
    quorumPeer.setMinSessionTimeout(config.getMinSessionTimeout());
    quorumPeer.setMaxSessionTimeout(config.getMaxSessionTimeout());
    quorumPeer.setInitLimit(config.getInitLimit());
    quorumPeer.setSyncLimit(config.getSyncLimit());
    quorumPeer.setQuorumVerifier(config.getQuorumVerifier());
    quorumPeer.setCnxnFactory(cnxnFactory);
    quorumPeer.setZKDatabase(new ZKDatabase(quorumPeer.getTxnFactory()));
    quorumPeer.setLearnerType(config.getPeerType());
    quorumPeer.setSyncEnabled(config.getSyncEnabled());
    quorumPeer.setQuorumListenOnAllIPs(config.getQuorumListenOnAllIPs());

    quorumPeer.start();

    return quorumPeer;
}
 

@Override
protected void startUp() throws Exception {
  ZooKeeperServer zkServer = new ZooKeeperServer();
  FileTxnSnapLog ftxn = new FileTxnSnapLog(dataDir, dataDir);
  zkServer.setTxnLogFactory(ftxn);
  zkServer.setTickTime(tickTime);

  factory = ServerCnxnFactory.createFactory();
  factory.configure(getAddress(port), -1);
  factory.startup(zkServer);

  LOG.info("In memory ZK started: " + getConnectionStr());
}
 

/**
 * Startup: start ZK. It is only after this that
 * the binding information is valid.
 * @throws Exception
 */
@Override
protected void serviceStart() throws Exception {

  setupSecurity();

  ZooKeeperServer zkServer = new ZooKeeperServer();
  FileTxnSnapLog ftxn = new FileTxnSnapLog(dataDir, dataDir);
  zkServer.setTxnLogFactory(ftxn);
  zkServer.setTickTime(tickTime);

  LOG.info("Starting Local Zookeeper service");
  factory = ServerCnxnFactory.createFactory();
  factory.configure(getAddress(port), -1);
  factory.startup(zkServer);

  String connectString = getConnectionString();
  LOG.info("In memory ZK started at {}\n", connectString);

  if (LOG.isDebugEnabled()) {
    StringWriter sw = new StringWriter();
    PrintWriter pw = new PrintWriter(sw);
    zkServer.dumpConf(pw);
    pw.flush();
    LOG.debug(sw.toString());
  }
  binding = new BindingInformation();
  binding.ensembleProvider = new FixedEnsembleProvider(connectString);
  binding.description =
      getName() + " reachable at \"" + connectString + "\"";

  addDiagnostics(binding.description);
  // finally: set the binding information in the config
  getConfig().set(KEY_REGISTRY_ZK_QUORUM, connectString);
}
 

/**
 * Run from a ServerConfig.
 * @param config ServerConfig to use.
 * @throws IOException If there is a low-level I/O error.
 */
public void runFromConfig(ServerConfig config) throws IOException {
  ObjectReleaseTracker.track(this);
  log.info("Starting server");
  try {
    // ZooKeeper maintains a static collection of AuthenticationProviders, so
    // we make sure the SASL provider is loaded so that it can be used in
    // subsequent tests.
    System.setProperty("zookeeper.authProvider.1",
      "org.apache.zookeeper.server.auth.SASLAuthenticationProvider");
    // Note that this thread isn't going to be doing anything else,
    // so rather than spawning another thread, we will just call
    // run() in this thread.
    // create a file logger url from the command line args
    FileTxnSnapLog ftxn = new FileTxnSnapLog(config.getDataLogDir(), config.getDataDir());

    zooKeeperServer = new ZooKeeperServer(ftxn, config.getTickTime(),
        config.getMinSessionTimeout(), config.getMaxSessionTimeout(),
        new TestZKDatabase(ftxn, limiter));
    cnxnFactory = new TestServerCnxnFactory(limiter);
    cnxnFactory.configure(config.getClientPortAddress(),
        config.getMaxClientCnxns());
    cnxnFactory.startup(zooKeeperServer);
    cnxnFactory.join();

    if (violationReportAction != LimitViolationAction.IGNORE) {
      String limitViolations = limiter.reportLimitViolations();
      if (!limitViolations.isEmpty()) {
        log.warn("Watch limit violations: {}", limitViolations);
        if (violationReportAction == LimitViolationAction.FAIL) {
          throw new AssertionError("Parallel watch limits violated");
        }
      }
    }
  } catch (InterruptedException e) {
    // warn, but generally this is ok
    log.warn("Server interrupted", e);
  }
}
 

public void setupFromConfig() {
    try {
        txnLog = new FileTxnSnapLog(config.getDataLogDir(), config.getDataDir());
    }
    catch (IOException e) {
        e.printStackTrace();
    }
    zkServer = new ZooKeeperServer(txnLog, config.getTickTime(), config.getMinSessionTimeout(), config.getMaxSessionTimeout(), null);
}
 

public EmbeddedZookeeper(int port) throws IOException {
  zkDataDir = Files.createTempDir();
  zkServer = new ZooKeeperServer();

  FileTxnSnapLog ftxn = new FileTxnSnapLog(zkDataDir, zkDataDir);
  zkServer.setTxnLogFactory(ftxn);

  cnxnFactory = new NIOServerCnxnFactory();
  cnxnFactory.configure(new InetSocketAddress(port), 0);
}
 

public EmbeddedZookeeper(final int port)
                throws IOException
{
    this.port = port;
    zkDataDir = Files.createTempDir();
    zkServer = new ZooKeeperServer();

    final FileTxnSnapLog ftxn = new FileTxnSnapLog(zkDataDir, zkDataDir);
    zkServer.setTxnLogFactory(ftxn);

    cnxnFactory = new NIOServerCnxn.Factory(new InetSocketAddress(this.port), 0);
}
 

public TestZooKeeperServer(FileTxnSnapLog txnLog, ServerConfig config)
{
    this.txnLog = txnLog;
    this.setTxnLogFactory(txnLog);
    this.setMinSessionTimeout(config.getMinSessionTimeout());
    this.setMaxSessionTimeout(config.getMaxSessionTimeout());
}
 

private void startDistributed() throws IOException {
    logger.info("Starting Embedded ZooKeeper Peer");

    try {
        transactionLog = new FileTxnSnapLog(quorumPeerConfig.getDataLogDir(), quorumPeerConfig.getDataDir());

        connectionFactory = ServerCnxnFactory.createFactory();
        connectionFactory.configure(quorumPeerConfig.getClientPortAddress(), quorumPeerConfig.getMaxClientCnxns());

        quorumPeer = new QuorumPeer();
        quorumPeer.setTxnFactory(new FileTxnSnapLog(quorumPeerConfig.getDataLogDir(), quorumPeerConfig.getDataDir()));
        quorumPeer.setElectionType(quorumPeerConfig.getElectionAlg());
        quorumPeer.setMyid(quorumPeerConfig.getServerId());
        quorumPeer.setTickTime(quorumPeerConfig.getTickTime());
        quorumPeer.setMinSessionTimeout(quorumPeerConfig.getMinSessionTimeout());
        quorumPeer.setMaxSessionTimeout(quorumPeerConfig.getMaxSessionTimeout());
        quorumPeer.setInitLimit(quorumPeerConfig.getInitLimit());
        quorumPeer.setSyncLimit(quorumPeerConfig.getSyncLimit());
        quorumPeer.setQuorumVerifier(quorumPeerConfig.getQuorumVerifier(), false);
        quorumPeer.setCnxnFactory(connectionFactory);
        quorumPeer.setZKDatabase(new ZKDatabase(quorumPeer.getTxnFactory()));
        quorumPeer.setLearnerType(quorumPeerConfig.getPeerType());
        quorumPeer.setSyncEnabled(quorumPeerConfig.getSyncEnabled());
        quorumPeer.setQuorumListenOnAllIPs(quorumPeerConfig.getQuorumListenOnAllIPs());

        quorumPeer.start();
    } catch (final IOException ioe) {
        throw new IOException("Failed to start embedded ZooKeeper Peer", ioe);
    } catch (final Exception e) {
        throw new RuntimeException("Failed to start embedded ZooKeeper Peer", e);
    }
}
 

public void connect() throws IOException, InterruptedException {
    zkServer = new ZooKeeperServer(new FileTxnSnapLog(dataDir, logDir), new ZooKeeperServer.BasicDataTreeBuilder());
    connectionFactory = new NIOServerCnxnFactory();
    connectionFactory.configure(new InetSocketAddress(port), 10);
    connectionFactory.startup(zkServer);
    port = zkServer.getClientPort();
}
 

public SpliceZoo(QuorumPeerConfig config, int number) throws IOException {
	this.config = config;
	try {
		if (QuorumPeer.class.getMethod("testingQuorumPeer", null) != null)
			this.peer = (QuorumPeer) QuorumPeer.class.getMethod("testingQuorumPeer", null).invoke(null,null);
		else
			this.peer = QuorumPeer.class.newInstance();
	} catch (Exception e) {
		throw new RuntimeException("Quorum Peer Signature Issue for Unit Tests");
	}
	ServerCnxnFactory cnxnFactory = ServerCnxnFactory.createFactory();
	cnxnFactory.configure(config.getClientPortAddress(),config.getMaxClientCnxns());
	peer.setClientPortAddress(config.getClientPortAddress());
	peer.setTxnFactory(new FileTxnSnapLog(new File(config.getDataLogDir()),
                    new File(config.getDataDir())));
	peer.setQuorumPeers(config.getServers());
	peer.setElectionType(config.getElectionAlg());
	peer.setMyid(config.getServerId());
	peer.setTickTime(config.getTickTime());
	peer.setMinSessionTimeout(config.getMinSessionTimeout());
	peer.setMaxSessionTimeout(config.getMaxSessionTimeout());
	peer.setInitLimit(config.getInitLimit());
	peer.setSyncLimit(config.getSyncLimit());
	peer.setQuorumVerifier(config.getQuorumVerifier());
	peer.setCnxnFactory(cnxnFactory);
	peer.setZKDatabase(new ZKDatabase(peer.getTxnFactory()));
	peer.setLearnerType(config.getPeerType());
	peer.setMyid(number);
}
 

public TestZKDatabase(FileTxnSnapLog snapLog, WatchLimiter limiter) {
  super(snapLog);
  this.limiter = limiter;
}
 

public TestZookeeperServer(FileTxnSnapLog txnLogFactory, DataTreeBuilder treeBuilder) throws IOException
{
  super(txnLogFactory, treeBuilder);
  // TODO Auto-generated constructor stub
}
 

public TestZookeeperServer(FileTxnSnapLog txnLogFactory, int tickTime, DataTreeBuilder treeBuilder) throws IOException
{
  super(txnLogFactory, tickTime, treeBuilder);
  // TODO Auto-generated constructor stub
}
 

public TestZookeeperServer(FileTxnSnapLog txnLogFactory, int tickTime, int minSessionTimeout, int maxSessionTimeout, DataTreeBuilder treeBuilder, ZKDatabase zkDb)
{
  super(txnLogFactory, tickTime, minSessionTimeout, maxSessionTimeout, treeBuilder, zkDb);
  // TODO Auto-generated constructor stub
}
 

public TestZookeeperServer(FileTxnSnapLog txnLogFactory, DataTreeBuilder treeBuilder) throws IOException
{
  super(txnLogFactory, treeBuilder);
  // TODO Auto-generated constructor stub
}
 

public TestZookeeperServer(FileTxnSnapLog txnLogFactory, int tickTime, DataTreeBuilder treeBuilder)
  throws IOException
{
  super(txnLogFactory, tickTime, treeBuilder);
  // TODO Auto-generated constructor stub
}
 

public TestZookeeperServer(FileTxnSnapLog txnLogFactory, int tickTime, int minSessionTimeout,
    int maxSessionTimeout, DataTreeBuilder treeBuilder, ZKDatabase zkDb)
{
  super(txnLogFactory, tickTime, minSessionTimeout, maxSessionTimeout, treeBuilder, zkDb);
  // TODO Auto-generated constructor stub
}
 

public TestZookeeperServer(FileTxnSnapLog txnLogFactory, DataTreeBuilder treeBuilder) throws IOException
{
  super(txnLogFactory, treeBuilder);
  // TODO Auto-generated constructor stub
}
 

public TestZookeeperServer(FileTxnSnapLog txnLogFactory, int tickTime, DataTreeBuilder treeBuilder)
  throws IOException
{
  super(txnLogFactory, tickTime, treeBuilder);
  // TODO Auto-generated constructor stub
}
 

public TestZookeeperServer(FileTxnSnapLog txnLogFactory, int tickTime, int minSessionTimeout,
    int maxSessionTimeout, DataTreeBuilder treeBuilder, ZKDatabase zkDb)
{
  super(txnLogFactory, tickTime, minSessionTimeout, maxSessionTimeout, treeBuilder, zkDb);
  // TODO Auto-generated constructor stub
}
 

/**
 * Starts Zookeeper.
 *
 * @throws IOException if an error occurs during initialization
 * @throws InterruptedException if an error occurs during initialization
 */
public synchronized void start() throws IOException, InterruptedException {
  log.info("Starting Zookeeper on port {}", port);

  dataDir = Files.createTempDirectory(LocalZKServer.class.getSimpleName());
  dataDir.toFile().deleteOnExit();

  QuorumPeerConfig quorumConfig = new QuorumPeerConfig();
  try {
    quorumConfig.parseProperties(ConfigUtils.keyValueToProperties(
        "dataDir", dataDir.toAbsolutePath(),
        "clientPort", port
    ));
  } catch (QuorumPeerConfig.ConfigException e) {
    throw new IllegalArgumentException(e);
  }

  purgeManager =
      new DatadirCleanupManager(quorumConfig.getDataDir(),
                                quorumConfig.getDataLogDir(),
                                quorumConfig.getSnapRetainCount(),
                                quorumConfig.getPurgeInterval());
  purgeManager.start();

  ServerConfig serverConfig = new ServerConfig();
  serverConfig.readFrom(quorumConfig);

  zkServer = new ZooKeeperServer();
  zkServer.setTickTime(serverConfig.getTickTime());
  zkServer.setMinSessionTimeout(serverConfig.getMinSessionTimeout());
  zkServer.setMaxSessionTimeout(serverConfig.getMaxSessionTimeout());

  // These two ServerConfig methods returned String in 3.4.x and File in 3.5.x
  transactionLog = new FileTxnSnapLog(new File(serverConfig.getDataLogDir().toString()),
                                      new File(serverConfig.getDataDir().toString()));
  zkServer.setTxnLogFactory(transactionLog);

  connectionFactory = ServerCnxnFactory.createFactory();
  connectionFactory.configure(serverConfig.getClientPortAddress(), serverConfig.getMaxClientCnxns());
  connectionFactory.startup(zkServer);
}