com.stratio.streaming.api.kafka.JsonGenericDecoder.scala Maven / Gradle / Ivy
/**
* Copyright (C) 2014 Stratio (http://stratio.com)
*
* 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 com.stratio.streaming.kafka
import kafka.serializer.Decoder
import com.google.gson.Gson
import com.stratio.streaming.commons.messages.StratioStreamingMessage
import com.stratio.streaming.commons.exceptions.StratioAPIGenericException
class JsonGenericDecoder extends Decoder[StratioStreamingMessage] {
def fromBytes(bytes: Array[Byte]): StratioStreamingMessage = {
try {
new Gson().fromJson(new String(bytes), classOf[StratioStreamingMessage])
} catch {
case _ => throw new StratioAPIGenericException("Streaming API error: unable to decode the engine message")
}
}
}