Quick-and-dirty proof of concept for overriding JobRunr JSON mapper visibility settings

JobRunrJsonMapper.kt

package com.example

import com.fasterxml.jackson.databind.ObjectMapper
import com.fasterxml.jackson.databind.introspect.AnnotatedField
import com.fasterxml.jackson.databind.introspect.AnnotatedMember
import com.fasterxml.jackson.databind.introspect.AnnotatedMethod
import com.fasterxml.jackson.databind.introspect.VisibilityChecker
import java.lang.reflect.Field
import java.lang.reflect.Member
import java.lang.reflect.Method
import java.lang.reflect.Modifier
import javax.annotation.ManagedBean
import org.jobrunr.utils.mapper.jackson.JacksonJsonMapper

@ManagedBean
class JobRunrJsonMapper : JacksonJsonMapper() {
  override fun initObjectMapper(
      objectMapper: ObjectMapper,
      moduleAutoDiscover: Boolean
  ): ObjectMapper {
    val mapper = super.initObjectMapper(objectMapper, moduleAutoDiscover)
    val checker = CustomVisibilityChecker(mapper.visibilityChecker)

    return mapper.setVisibility(checker)
  }

  class CustomVisibilityChecker<T : VisibilityChecker<T>>(
      private val defaultChecker: VisibilityChecker<T>
  ) : VisibilityChecker<T> by defaultChecker {
    private fun isCustom(clazz: Class<*>) = clazz.packageName.startsWith("com.example")

    override fun isFieldVisible(f: Field): Boolean =
        !isCustom(f.declaringClass) && defaultChecker.isFieldVisible(f)

    override fun isFieldVisible(f: AnnotatedField): Boolean = isFieldVisible(f.annotated)

    override fun isGetterVisible(m: Method): Boolean {
      return if (isCustom(m.declaringClass)) Modifier.isPublic(m.modifiers)
      else defaultChecker.isGetterVisible(m)
    }

    override fun isGetterVisible(m: AnnotatedMethod): Boolean = isGetterVisible(m.annotated)

    override fun isIsGetterVisible(m: Method): Boolean = isGetterVisible(m)

    override fun isIsGetterVisible(m: AnnotatedMethod): Boolean = isGetterVisible(m)

    override fun isCreatorVisible(m: Member): Boolean {
      return if (isCustom(m.declaringClass)) Modifier.isPublic(m.modifiers)
      else defaultChecker.isCreatorVisible(m)
    }

    override fun isCreatorVisible(m: AnnotatedMember): Boolean = isCreatorVisible(m.member)
  }
}