/*
* Copyright 2014 the original author or authors.
*
* Licensed 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.springframework.xd.dirt.integration.kafka;
import kafka.serializer.Decoder;
import kafka.serializer.Encoder;
import kafka.utils.VerifiableProperties;
import org.springframework.util.Assert;
/**
* A Kafka encoder / decoder used to serialize a single int, used as the kafka partition key.
*
* @author Eric Bottard
*/
public class IntegerEncoderDecoder implements Encoder<Integer>, Decoder<Integer> {
public IntegerEncoderDecoder() {
this(new VerifiableProperties());
}
public IntegerEncoderDecoder(VerifiableProperties properties) {
}
@Override
public Integer fromBytes(byte[] bytes) {
Assert.isTrue(bytes.length == 4);
return bytes[0] << 24 | (bytes[1] & 0xFF) << 16 | (bytes[2] & 0xFF) << 8 | (bytes[3] & 0xFF);
}
@Override
public byte[] toBytes(Integer message) {
int value = message.intValue();
return new byte[] {
(byte) (value >>> 24),
(byte) (value >>> 16),
(byte) (value >>> 8),
(byte) value
};
}
}