flink-connectors/flink-connector-kafka-base/src/test/java/org/apache/flink/streaming/connectors/kafka/testutils/ZooKeeperStringSerializer.java

/*
 * 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.flink.streaming.connectors.kafka.testutils;

import org.apache.flink.configuration.ConfigConstants;

import org.I0Itec.zkclient.serialize.ZkSerializer;

/**
 * Simple ZooKeeper serializer for Strings.
 */
public class ZooKeeperStringSerializer implements ZkSerializer {

	@Override
	public byte[] serialize(Object data) {
		if (data instanceof String) {
			return ((String) data).getBytes(ConfigConstants.DEFAULT_CHARSET);
		}
		else {
			throw new IllegalArgumentException("ZooKeeperStringSerializer can only serialize strings.");
		}
	}

	@Override
	public Object deserialize(byte[] bytes) {
		if (bytes == null) {
			return null;
		}
		else {
			return new String(bytes, ConfigConstants.DEFAULT_CHARSET);
		}
	}
}