SerdeMessage.kt 1.63 KB
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/*
 * xml-data-transform
 * Copyright (C) 2020 Memoriav
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
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package org.memobase.utils

import com.beust.klaxon.Klaxon
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import java.io.ByteArrayInputStream
import java.nio.charset.Charset
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import org.apache.kafka.common.serialization.Deserializer
import org.apache.kafka.common.serialization.Serde
import org.apache.kafka.common.serialization.Serializer
import org.memobase.models.Message

class SerdeMessage : Serde<Message> {

    private val klaxon = Klaxon()

    override fun serializer(): Serializer<Message> {
        return Serializer { _, data ->
            klaxon.toJsonString(data).toByteArray()
        }
    }

    override fun deserializer(): Deserializer<Message> {
        return Deserializer { _, data ->
            klaxon.parse<Message>(ByteArrayInputStream(data)) ?: error(
                "Could not deserialize message: ${
                    data.toString(
                        Charset.defaultCharset()
                    )
                }"
            )
        }
    }
}