za.co.absa.enceladus.dao.rest.JsonSerializer.scala Maven / Gradle / Ivy
/*
* Copyright 2018-2019 ABSA Group Limited
*
* 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 za.co.absa.enceladus.dao.rest
import com.fasterxml.jackson.databind.{DeserializationFeature, ObjectMapper, SerializationFeature}
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule
import com.fasterxml.jackson.module.scala.DefaultScalaModule
import scala.reflect.ClassTag
import scala.util.Try
object JsonSerializer {
val objectMapper: ObjectMapper = new ObjectMapper()
.registerModule(DefaultScalaModule)
.registerModule(new JavaTimeModule())
.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false)
.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false)
def fromJson[T](json: String)
(implicit ct: ClassTag[T]): T = {
val clazz = ct.runtimeClass.asInstanceOf[Class[T]]
if (clazz == classOf[String]) {
json.asInstanceOf[T]
} else {
objectMapper.readValue(json, clazz)
}
}
def toJson[T](entity: T): String = {
entity match {
case str: String =>
if (isValidJson(str)) str else objectMapper.writeValueAsString(entity)
case _ =>
objectMapper.writeValueAsString(entity)
}
}
def isValidJson[T](str: T with String): Boolean = {
Try(objectMapper.readTree(str)).isSuccess
}
}