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provides http4s' EntityEncoder/EntityDecoder for supported Serializer and Deserializer
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http4s/src/main/scala/chameleon/ext/http4s/JsonByteArrayCodec.scala
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package chameleon.ext.http4s | ||
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import cats.effect.Concurrent | ||
import cats.implicits._ | ||
import chameleon.{Deserializer, Serializer} | ||
import org.http4s.headers.`Content-Type` | ||
import org.http4s.{DecodeResult, EntityDecoder, EntityEncoder, Headers, MalformedMessageBodyFailure, Media, MediaType} | ||
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object JsonByteArrayCodec { | ||
def jsonDecoderOf[F[_]: Concurrent, A](implicit deserializer: Deserializer[A, Array[Byte]]): EntityDecoder[F, A] = | ||
EntityDecoder.decodeBy(MediaType.application.json) { media => | ||
EntityDecoder.collectBinary(media).flatMap { chunk => | ||
DecodeResult[F, A](Concurrent[F].pure( | ||
deserializer.deserialize(chunk.toArray).leftMap(error => MalformedMessageBodyFailure("Invalid JSON", Some(error))) | ||
)) | ||
} | ||
} | ||
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def jsonEncoderOf[F[_], A](implicit serializer: Serializer[A, Array[Byte]]): EntityEncoder[F, A] = | ||
EntityEncoder.encodeBy[F, A](Headers(`Content-Type`(MediaType.application.json))) { | ||
EntityEncoder.byteArrayEncoder[F].contramap(serializer.serialize).toEntity(_) | ||
} | ||
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case class json[A](value: A) | ||
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def jsonAs[A] = new JsonAsPartialApplied[A] | ||
class JsonAsPartialApplied[A] { | ||
def apply[F[_]: Concurrent](media: Media[F])(implicit deserializer: Deserializer[A, Array[Byte]]): F[A] = media.as[A](implicitly, jsonDecoderOf[F, A]) | ||
} | ||
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implicit def jsonEntityDecoderJson[F[_]: Concurrent, A](implicit deserializer: Deserializer[A, Array[Byte]]): EntityDecoder[F, json[A]] = | ||
jsonDecoderOf[F, A].map(json(_)) | ||
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implicit def jsonEntityEncoderJson[F[_], A](implicit serializer: Serializer[A, Array[Byte]]): EntityEncoder[F, json[A]] = | ||
jsonEncoderOf[F, A].contramap(_.value) | ||
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object auto { | ||
implicit def jsonEntityDecoder[F[_] : Concurrent, A](implicit deserializer: Deserializer[A, Array[Byte]]): EntityDecoder[F, A] = jsonDecoderOf[F, A] | ||
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implicit def jsonEntityEncoder[F[_], A](implicit serializer: Serializer[A, Array[Byte]]): EntityEncoder[F, A] = jsonEncoderOf[F, A] | ||
} | ||
} |
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http4s/src/main/scala/chameleon/ext/http4s/JsonStringCodec.scala
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package chameleon.ext.http4s | ||
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import cats.effect.Concurrent | ||
import cats.implicits._ | ||
import chameleon.{Deserializer, Serializer} | ||
import org.http4s.headers.`Content-Type` | ||
import org.http4s.{DecodeResult, EntityDecoder, EntityEncoder, Headers, MalformedMessageBodyFailure, Media, MediaType} | ||
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object JsonStringCodec { | ||
def jsonDecoderOf[F[_] : Concurrent, A](implicit deserializer: Deserializer[A, String]): EntityDecoder[F, A] = | ||
EntityDecoder.decodeBy(MediaType.application.json) { media => | ||
DecodeResult[F, A]( | ||
EntityDecoder.decodeText(media).map { json => | ||
deserializer.deserialize(json).leftMap(error => MalformedMessageBodyFailure("Invalid JSON", Some(error))) | ||
} | ||
) | ||
} | ||
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def jsonEncoderOf[F[_], A](implicit serializer: Serializer[A, String]): EntityEncoder[F, A] = | ||
EntityEncoder.encodeBy[F, A](Headers(`Content-Type`(MediaType.application.json))) { | ||
EntityEncoder.stringEncoder[F].contramap(serializer.serialize).toEntity(_) | ||
} | ||
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case class json[A](value: A) | ||
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def jsonAs[A] = new JsonAsPartialApplied[A] | ||
class JsonAsPartialApplied[A] { | ||
def apply[F[_]: Concurrent](media: Media[F])(implicit deserializer: Deserializer[A, String]): F[A] = media.as[A](implicitly, jsonDecoderOf[F, A]) | ||
} | ||
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implicit def jsonEntityDecoderJson[F[_]: Concurrent, A](implicit serializer: Deserializer[A, String]): EntityDecoder[F, json[A]] = | ||
jsonDecoderOf[F, A].map(json(_)) | ||
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implicit def jsonEntityEncoderJson[F[_], A](implicit serializer: Serializer[A, String]): EntityEncoder[F, json[A]] = | ||
jsonEncoderOf[F, A].contramap(_.value) | ||
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object auto { | ||
implicit def jsonEntityDecoder[F[_] : Concurrent, A](implicit deserializer: Deserializer[A, String]): EntityDecoder[F, A] = jsonDecoderOf[F, A] | ||
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implicit def jsonEntityEncoder[F[_], A](implicit serializer: Serializer[A, String]): EntityEncoder[F, A] = jsonEncoderOf[F, A] | ||
} | ||
} |
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