display schema errors in JSON or YAML file in custom plugin

Thanks for providing your input here it helped me to progress. 

What is the recommended way to apply config in my plugin where this schema get applied to only particular file based on name / pattern ?

I could do this using code in implementation of JsonSchemaProviderFactory.

override fun isAvailable(file: VirtualFile): Boolean {
val readOnlyList = listOf<String>("values_e1.yaml","values_e2.yaml","values_e3.yaml")
return readOnlyList.contains(file.name)
}

Also when there is a schema error how to configure so IDE displays those line as errors ?