com.ebiznext.comet.schema.model.Mode.scala Maven / Gradle / Ivy
/*
*
* * 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,
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* * See the License for the specific language governing permissions and
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package com.ebiznext.comet.schema.model
import com.fasterxml.jackson.core.{JsonGenerator, JsonParser}
import com.fasterxml.jackson.databind.annotation.{JsonDeserialize, JsonSerialize}
import com.fasterxml.jackson.databind.{
DeserializationContext,
JsonDeserializer,
JsonSerializer,
SerializerProvider
}
/**
* Big versus Fast data ingestion. Are we ingesting a file or a message stream ?
* @param value : FILE or STREAM
*/
@JsonSerialize(using = classOf[ModeSerializer])
@JsonDeserialize(using = classOf[ModeDeserializer])
sealed case class Mode(value: String) {
override def toString: String = value
}
object Mode {
def fromString(value: String): Mode = {
value.toUpperCase() match {
case "FILE" => Mode.FILE
case "STREAM" => Mode.STREAM
case "FILE_AND_STREAM" => Mode.FILE_AND_STREAM
}
}
object FILE extends Mode("FILE")
object STREAM extends Mode("STREAM")
object FILE_AND_STREAM extends Mode("FILE_AND_STREAM")
val modes: Set[Mode] = Set(FILE, STREAM, FILE_AND_STREAM)
}
class ModeDeserializer extends JsonDeserializer[Mode] {
override def deserialize(jp: JsonParser, ctx: DeserializationContext): Mode = {
val value = jp.readValueAs[String](classOf[String])
Mode.fromString(value)
}
}
final class ModeSerializer extends JsonSerializer[Mode] {
override def serialize(
value: Mode,
gen: JsonGenerator,
serializers: SerializerProvider
): Unit = {
val strValue = value.toString
gen.writeString(strValue)
}
}