org.I0Itec.zkclient.serialize.ZkSerializer Java Examples

private void init() {
        zkClient = new ZkClient(HOST.concat(":" + CLIENT_PORT), TIME_OUT_MILLISECOND);

        zkSerializer = new ZkSerializer() {
            /**
             * TODO{Benedict Jin}: kryo
             */
            @Override
            public byte[] serialize(Object data) throws ZkMarshallingError {
                return new byte[0];
            }

            @Override
            public Object deserialize(byte[] bytes) throws ZkMarshallingError {
                return null;
            }
        };
//        zkClient.setZkSerializer(zkSerializer);
    }
 

public DiscoveryTool(String serverstring) {
    super(serverstring, 30000, 30000, new ZkSerializer() {
        private final ObjectMapper mapper = new ObjectMapper();

        @Override
        public byte[] serialize(Object o) throws ZkMarshallingError {
            throw new ZkMarshallingError("This is a read-only zkClient");
        }

        @Override
        public Object deserialize(byte[] bytes) throws ZkMarshallingError {
            try {
                return mapper.readTree(bytes);
            } catch (IOException e) {
                throw new ZkMarshallingError(e);
            }
        }
    });
}
 

public KafkaProduceOffsetFetcher(String zkHost) {
    this.zkClient = new ZkClient(zkHost, SESSION_TIMEOUT, CONNECTION_TIMEOUT, new ZkSerializer() {
        @Override
        public byte[] serialize(Object o) throws ZkMarshallingError {
            return ((String) o).getBytes();
        }

        @Override
        public Object deserialize(byte[] bytes) throws ZkMarshallingError {
            if (bytes == null) {
                return null;
            } else {
                return StringUtils.newStringUtf8(bytes);
            }
        }
    });
}
 

public KafkaProduceOffsetFetcher(String zkHost) {
    this.zkClient = new ZkClient(zkHost, SESSION_TIMEOUT, CONNECTION_TIMEOUT, new ZkSerializer() {
        @Override
        public byte[] serialize(Object o) throws ZkMarshallingError {
            return ((String) o).getBytes();
        }

        @Override
        public Object deserialize(byte[] bytes) throws ZkMarshallingError {
            if (bytes == null) {
                return null;
            } else {
                return StringUtils.newStringUtf8(bytes);
            }
        }
    });
}
 

/**
 * product  ZkSerializer with className.
 *
 * @param className className
 * @return ZkSerializer zk serializer
 */
public static ZkSerializer of(final String className) {
    return StreamSupport.stream(SERVICE_LOADER.spliterator(), false)
            .filter(service -> Objects.equals(service.getClass().getName().substring(service.getClass().getName().lastIndexOf(".") + 1), className))
            .findFirst()
            .orElse(new KryoSerializer());
}
 

public ZkClient(IZkConnection zkConnection, int connectionTimeout, ZkSerializer zkSerializer) {
    this(zkConnection, connectionTimeout, zkSerializer, -1, null);
}
 

private ZkClientx(IZkConnection zkConnection, int connectionTimeout, ZkSerializer zkSerializer){
    super(zkConnection, connectionTimeout, zkSerializer);
}
 

public ZkClientx(String zkServers, int sessionTimeout, int connectionTimeout, ZkSerializer zkSerializer){
    this(new ZooKeeperx(zkServers, sessionTimeout), connectionTimeout, zkSerializer);
}
 

private ZkClientx(IZkConnection zkConnection, int connectionTimeout, ZkSerializer zkSerializer){
    super(zkConnection, connectionTimeout, zkSerializer);
}
 

public ZkClientx(String zkServers, int sessionTimeout, int connectionTimeout, ZkSerializer zkSerializer){
    this(new ZkConnection(zkServers, sessionTimeout), connectionTimeout, zkSerializer);
}
 

public void setZkSerializer(ZkSerializer zkSerializer) {
    _zkSerializer = zkSerializer;
}
 

public ZkClient(String zkServers, int sessionTimeout, int connectionTimeout, ZkSerializer zkSerializer) {
    this(new ZkConnection(zkServers, sessionTimeout), connectionTimeout, zkSerializer);
}
 

public ZkClient(String zkServers, int sessionTimeout, int connectionTimeout, ZkSerializer zkSerializer, IZkStateListener zkStateListener) {
    this(new ZkConnection(zkServers, sessionTimeout), connectionTimeout, zkSerializer, -1, zkStateListener);
}
 

public ZkClient(String zkServers, int sessionTimeout, int connectionTimeout, ZkSerializer zkSerializer) {
    this(new ZkConnection(zkServers, sessionTimeout), connectionTimeout, zkSerializer);
}
 

private ZkClientx(IZkConnection zkConnection, int connectionTimeout, ZkSerializer zkSerializer){
    super(zkConnection, connectionTimeout, zkSerializer);
}
 

public ZkClientx(String zkServers, int sessionTimeout, int connectionTimeout, ZkSerializer zkSerializer){
    this(new ZooKeeperx(zkServers, sessionTimeout), connectionTimeout, zkSerializer);
}
 

public void setZkSerializer(ZkSerializer zkSerializer) {
    _zkSerializer = zkSerializer;
}
 

public ZkClient(IZkConnection zkConnection, int connectionTimeout, ZkSerializer zkSerializer) {
    this(zkConnection, connectionTimeout, zkSerializer, -1, null);
}
 

public ZkClient(String zkServers, int sessionTimeout, int connectionTimeout, ZkSerializer zkSerializer, IZkStateListener zkStateListener) {
    this(new ZkConnection(zkServers, sessionTimeout), connectionTimeout, zkSerializer, -1, zkStateListener);
}
 

/**
 *
 * @param zkConnection
 *            The Zookeeper servers
 * @param connectionTimeout
 *            The connection timeout in milli seconds
 * @param zkSerializer
 *            The Zookeeper data serializer
 * @param operationRetryTimeout
 *            Most operations done through this {@link org.I0Itec.zkclient.ZkClient} are retried in cases like
 *            connection loss with the Zookeeper servers. During such failures, this
 *            <code>operationRetryTimeout</code> decides the maximum amount of time, in milli seconds, each
 *            operation is retried. A value lesser than 0 is considered as
 *            "retry forever until a connection has been reestablished".
 */
public ZkClient(final IZkConnection zkConnection, final int connectionTimeout, final ZkSerializer zkSerializer, final long operationRetryTimeout, final IZkStateListener zkStateListener) {
    if (zkConnection == null) {
        throw new NullPointerException("Zookeeper connection is null!");
    }
    _connection = zkConnection;
    _zkSerializer = zkSerializer;
    _operationRetryTimeoutInMillis = operationRetryTimeout;
    _isZkSaslEnabled = isZkSaslEnabled();
    if(zkStateListener != null) {
        subscribeStateChanges(zkStateListener);
    }

    connect(connectionTimeout, this);
}
 

/**
 *
 * @param zkConnection
 *            The Zookeeper servers
 * @param connectionTimeout
 *            The connection timeout in milli seconds
 * @param zkSerializer
 *            The Zookeeper data serializer
 * @param operationRetryTimeout
 *            Most operations done through this {@link org.I0Itec.zkclient.ZkClient} are retried in cases like
 *            connection loss with the Zookeeper servers. During such failures, this
 *            <code>operationRetryTimeout</code> decides the maximum amount of time, in milli seconds, each
 *            operation is retried. A value lesser than 0 is considered as
 *            "retry forever until a connection has been reestablished".
 */
public ZkClient(final IZkConnection zkConnection, final int connectionTimeout, final ZkSerializer zkSerializer, final long operationRetryTimeout, final IZkStateListener zkStateListener) {
    if (zkConnection == null) {
        throw new NullPointerException("Zookeeper connection is null!");
    }
    _connection = zkConnection;
    _zkSerializer = zkSerializer;
    _operationRetryTimeoutInMillis = operationRetryTimeout;
    _isZkSaslEnabled = isZkSaslEnabled();
    if(zkStateListener != null) {
        subscribeStateChanges(zkStateListener);
    }

    connect(connectionTimeout, this);
}
 

/**
 * State store that stores instances of {@link State}s in a ZooKeeper-backed {@link HelixPropertyStore}
 * storeRootDir will be created when the first entry is written if it does not exist
 * @param connectString ZooKeeper connect string
 * @param storeRootDir The root directory for the state store
 * @param compressedValues should values be compressed for storage?
 * @param stateClass The type of state being stored
 * @throws IOException
 */
public ZkStateStore(String connectString, String storeRootDir, boolean compressedValues, Class<T> stateClass)
    throws IOException {
  this.compressedValues = compressedValues;
  this.stateClass = stateClass;

  ZkSerializer serializer = new ByteArraySerializer();
  propStore = new ZkHelixPropertyStore<byte[]>(connectString, serializer, storeRootDir);
}
 

/**
 *
 * @param zkServers
 *            The Zookeeper servers
 * @param sessionTimeout
 *            The session timeout in milli seconds
 * @param connectionTimeout
 *            The connection timeout in milli seconds
 * @param zkSerializer
 *            The Zookeeper data serializer
 * @param operationRetryTimeout
 *            Most operations done through this {@link org.I0Itec.zkclient.ZkClient} are retried in cases like
 *            connection loss with the Zookeeper servers. During such failures, this
 *            <code>operationRetryTimeout</code> decides the maximum amount of time, in milli seconds, each
 *            operation is retried. A value lesser than 0 is considered as
 *            "retry forever until a connection has been reestablished".
 */
public ZkClient(final String zkServers, final int sessionTimeout, final int connectionTimeout, final ZkSerializer zkSerializer, final long operationRetryTimeout) {
    this(new ZkConnection(zkServers, sessionTimeout), connectionTimeout, zkSerializer, operationRetryTimeout, null);
}
 

/**
 *
 * @param zkServers
 *            The Zookeeper servers
 * @param sessionTimeout
 *            The session timeout in milli seconds
 * @param connectionTimeout
 *            The connection timeout in milli seconds
 * @param zkSerializer
 *            The Zookeeper data serializer
 * @param operationRetryTimeout
 *            Most operations done through this {@link org.I0Itec.zkclient.ZkClient} are retried in cases like
 *            connection loss with the Zookeeper servers. During such failures, this
 *            <code>operationRetryTimeout</code> decides the maximum amount of time, in milli seconds, each
 *            operation is retried. A value lesser than 0 is considered as
 *            "retry forever until a connection has been reestablished".
 */
public ZkClient(final String zkServers, final int sessionTimeout, final int connectionTimeout, final ZkSerializer zkSerializer, final long operationRetryTimeout) {
    this(new ZkConnection(zkServers, sessionTimeout), connectionTimeout, zkSerializer, operationRetryTimeout, null);
}