Finatra validation annotations (e.g. com.twitter.finatra.validation.constraint.Size) cause runtime error in swagger doc generation

[mog1919]

if I have a case class defined as follows,

case class MyRequest(id: String, @com.twitter.finatra.validation.constraint.Size(min=1, max=1024) value: String)

and use this class as a request type in my swagger doc:

postWithDoc("/foobar") { o =>
    o.summary("example")
      .request[MyRequest]

it will throw an exception at runtime from the bytebuddy code due to the fact that the @Size annotation does not have FIELD type as a target, and finatra-swagger is attempting to add it as a public field with this annotation:

Cause: java.lang.IllegalStateException: Cannot add @com.twitter.finatra.validation.constraints.Size(min=1, max=1024) on public java.lang.String swagger.MyRequest.value

at net.bytebuddy.dynamic.scaffold.InstrumentedType$Default.validated(InstrumentedType.java:1484)

at net.bytebuddy.dynamic.scaffold.MethodRegistry$Default.prepare(MethodRegistry.java:519)

at net.bytebuddy.dynamic.scaffold.subclass.SubclassDynamicTypeBuilder.make(SubclassDynamicTypeBuilder.java:213)

at net.bytebuddy.dynamic.scaffold.subclass.SubclassDynamicTypeBuilder.make(SubclassDynamicTypeBuilder.java:204)

at net.bytebuddy.dynamic.DynamicType$Builder$AbstractBase.make(DynamicType.java:3595)

at net.bytebuddy.dynamic.DynamicType$Builder$AbstractBase$Delegator.make(DynamicType.java:3819)
at com.jakehschwartz.finatra.swagger.FinatraSwagger.getSwaggerBodyProp(FinatraSwagger.scala:155)

at com.jakehschwartz.finatra.swagger.FinatraSwagger.register(FinatraSwagger.scala:116)

at com.jakehschwartz.finatra.swagger.FinatraOperation.request(FinatraOperation.scala:32)

[jakehschwartz]

@mog1919 Thanks for finding this. I'll have time to look at this next week, but would of course accept a PR if you find a fix sooner!!