io.confluent.kafkarest.entities.BinaryConsumerRecord.java Source code

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Here is the source code for io.confluent.kafkarest.entities.BinaryConsumerRecord.java

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/**
 * Copyright 2015 Confluent Inc.
 *
 * 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 io.confluent.kafkarest.entities;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;

import java.io.IOException;
import java.util.Arrays;
import java.util.Objects;

import io.confluent.rest.validation.ConstraintViolations;

public class BinaryConsumerRecord extends ConsumerRecord<byte[], byte[]> {

    @JsonCreator
    public BinaryConsumerRecord(@JsonProperty("topic") String topic, @JsonProperty("key") String key,
            @JsonProperty("value") String value, @JsonProperty("partition") int partition,
            @JsonProperty("offset") long offset) throws IOException {
        super(topic, decodeBinary(key, "key"), decodeBinary(value, "value"), partition, offset);

        try {
            this.value = EntityUtils.parseBase64Binary(value);
        } catch (IllegalArgumentException e) {
            throw ConstraintViolations.simpleException("Record value contains invalid base64 encoding");
        }
    }

    public BinaryConsumerRecord(String topic, byte[] key, byte[] value, int partition, long offset) {
        super(topic, key, value, partition, offset);
    }

    @Override
    @JsonProperty("key")
    public String getJsonKey() {
        if (key == null) {
            return null;
        }
        return EntityUtils.encodeBase64Binary(key);
    }

    @Override
    @JsonProperty("value")
    public String getJsonValue() {
        if (value == null) {
            return null;
        }
        return EntityUtils.encodeBase64Binary(value);
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        BinaryConsumerRecord that = (BinaryConsumerRecord) o;
        return partition == that.partition && offset == that.offset && Objects.equals(topic, that.topic)
                && Arrays.equals(key, that.key) && Arrays.equals(value, that.value);
    }

    @Override
    public int hashCode() {
        return Arrays.deepHashCode(new Object[] { topic, key, value, partition, offset });
    }

    private static byte[] decodeBinary(String binary, String field) {
        try {
            return binary == null ? null : EntityUtils.parseBase64Binary(binary);
        } catch (IllegalArgumentException e) {
            throw ConstraintViolations.simpleException("Record " + field + " contains invalid base64 encoding");
        }
    }
}