ConfigReader[RasterSource] for pureconfig 0.10.0

RasterSourceConf.scala

 package geotrellis.server.ogc.conf

 import pureconfig._
 import pureconfig.error.{ConfigReaderFailures, NoValidCoproductChoiceFound}
 import geotrellis.contrib.vlm.RasterSource
 import geotrellis.contrib.vlm.avro.GeotrellisRasterSource
 import geotrellis.contrib.vlm.gdal.GDALRasterSource
 import geotrellis.contrib.vlm.geotiff.GeoTiffRasterSource
 import geotrellis.spark.LayerId

 trait RasterSourceConf {
   private def readGeoTrellisRasterSourceConf(objCur: ConfigObjectCursor): Either[ConfigReaderFailures, GeotrellisRasterSource] = {
     for {
       uriCur <- objCur.atKey("catalog-uri").right
       uri <- uriCur.asString.right
       layerCur <- objCur.atKey("layer").right
       layerName <- layerCur.asString.right
       zoomCur <- objCur.atKey("zoom").right
       zoom <- zoomCur.asInt.right
       bandCur <- objCur.atKey("band-count").right
       band <- bandCur.asInt.right
     } yield GeotrellisRasterSource(uri, LayerId(layerName, zoom), band)
   }

   private def readGeoTiffRasterSourceConf(objCur: ConfigObjectCursor): Either[ConfigReaderFailures, GeoTiffRasterSource] = {
     for {
       uriCur <- objCur.atKey("uri").right
       uri <- uriCur.asString.right
     } yield GeoTiffRasterSource(uri)
   }


   private def readGDALRasterSourceConf(objCur: ConfigObjectCursor): Either[ConfigReaderFailures, GDALRasterSource] = {
     for {
       uriCur <- objCur.atKey("uri").right
       uri <- uriCur.asString.right
     } yield GDALRasterSource(uri)
   }

   implicit val rasterSourceReader = ConfigReader.fromCursor[RasterSource] { cur =>
     for {
       objCur <- cur.asObjectCursor.right
       typeCur <- objCur.atKey("type").right
       typeName <- typeCur.asString.right
       source <- {typeName match {
         case "geotrellis" => readGeoTrellisRasterSourceConf(objCur)
         case "geotiff" => readGeoTiffRasterSourceConf(objCur)
         case "gdal" => readGDALRasterSourceConf(objCur)
         case _ => typeCur.failed(NoValidCoproductChoiceFound(typeCur.value))
       }}.right
     } yield source
   }
 }