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AvroSupport.scala
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AvroSupport.scala
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/*
* Copyright 2019 Michel Davit
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package fr.davit.pekko.http.scaladsl.marshallers.avro
import org.apache.avro.Schema
import org.apache.avro.generic.GenericRecord
import org.apache.avro.specific.SpecificRecord
import org.apache.pekko.http.scaladsl.marshalling.{Marshaller, ToEntityMarshaller}
import org.apache.pekko.http.scaladsl.model.*
import org.apache.pekko.http.scaladsl.model.MediaType.NotCompressible
import org.apache.pekko.http.scaladsl.unmarshalling.{FromEntityUnmarshaller, Unmarshaller}
import scala.reflect.ClassTag
object AvroProtocol {
val `avro/binary`: ContentType = MediaType.customBinary("avro", "binary", NotCompressible)
val `avro/raw`: ContentType = MediaType.customBinary("avro", "raw", NotCompressible)
}
trait AvroGenericSupport {
def avroGenericUnmarshaller(schema: Schema): FromEntityUnmarshaller[GenericRecord]
def avroGenericMarshaller(schema: Schema): ToEntityMarshaller[GenericRecord]
}
trait AvroSpecificSupport {
implicit def avroSpecificUnmarshaller[T <: SpecificRecord: ClassTag]: FromEntityUnmarshaller[T]
implicit def avroSpecificMarshaller[T <: SpecificRecord: ClassTag]: ToEntityMarshaller[T]
}
trait AvroReflectSupport {
def avroReflectUnmarshaller[T: ClassTag]: FromEntityUnmarshaller[T]
def avroReflectMarshaller[T: ClassTag]: ToEntityMarshaller[T]
}
trait AvroAllSupport extends AvroGenericSupport with AvroSpecificSupport with AvroReflectSupport
trait AvroProtocolGenericSupport extends AvroGenericSupport {
def contentType: ContentType
def genericDecoder(schema: Schema): AvroDecoder[GenericRecord]
def genericEncoder(schema: Schema): AvroEncoder[GenericRecord]
override def avroGenericUnmarshaller(schema: Schema): FromEntityUnmarshaller[GenericRecord] = {
val decoder = genericDecoder(schema)
Unmarshaller.byteStringUnmarshaller
.forContentTypes(contentType)
.map(decoder.decode)
}
override def avroGenericMarshaller(schema: Schema): ToEntityMarshaller[GenericRecord] = {
val encoder = genericEncoder(schema)
Marshaller
.byteStringMarshaller(contentType)
.compose(encoder.encode)
}
}
trait AvroProtocolSpecificSupport extends AvroSpecificSupport {
def contentType: ContentType
def specificDecoder[T <: SpecificRecord: ClassTag]: AvroDecoder[T]
def specificEncoder[T <: SpecificRecord: ClassTag]: AvroEncoder[T]
implicit override def avroSpecificUnmarshaller[T <: SpecificRecord: ClassTag]: FromEntityUnmarshaller[T] = {
val decoder = specificDecoder[T]
Unmarshaller.byteStringUnmarshaller
.forContentTypes(contentType)
.map(decoder.decode)
}
implicit override def avroSpecificMarshaller[T <: SpecificRecord: ClassTag]: ToEntityMarshaller[T] = {
val encoder = specificEncoder[T]
Marshaller
.byteStringMarshaller(contentType)
.compose(encoder.encode)
}
}
trait AvroProtocolReflectSupport extends AvroReflectSupport {
def contentType: ContentType
def reflectDecoder[T: ClassTag]: AvroDecoder[T]
def reflectEncoder[T: ClassTag]: AvroEncoder[T]
override def avroReflectUnmarshaller[T: ClassTag]: FromEntityUnmarshaller[T] = {
val decoder = reflectDecoder[T]
Unmarshaller.byteStringUnmarshaller
.forContentTypes(contentType)
.map(decoder.decode)
}
override def avroReflectMarshaller[T: ClassTag]: ToEntityMarshaller[T] = {
val encoder = reflectEncoder[T]
Marshaller
.byteStringMarshaller(contentType)
.compose(encoder.encode)
}
}
trait AvroProtocolAllSupport
extends AvroAllSupport
with AvroProtocolGenericSupport
with AvroProtocolSpecificSupport
with AvroProtocolReflectSupport
trait AvroBinarySupport extends AvroProtocolAllSupport {
override def contentType: ContentType = AvroProtocol.`avro/binary`
override def genericDecoder(schema: Schema): AvroDecoder[GenericRecord] = AvroBinaryDecoder.generic(schema)
override def genericEncoder(schema: Schema): AvroEncoder[GenericRecord] = AvroBinaryEncoder.generic(schema)
override def specificDecoder[T <: SpecificRecord: ClassTag]: AvroDecoder[T] = AvroBinaryDecoder.specific[T]
override def specificEncoder[T <: SpecificRecord: ClassTag]: AvroEncoder[T] = AvroBinaryEncoder.specific[T]
override def reflectDecoder[T: ClassTag]: AvroDecoder[T] = AvroBinaryDecoder.reflect[T]
override def reflectEncoder[T: ClassTag]: AvroEncoder[T] = AvroBinaryEncoder.reflect[T]
}
object AvroBinarySupport extends AvroBinarySupport
trait AvroRawSupport extends AvroProtocolAllSupport {
override def contentType: ContentType = AvroProtocol.`avro/raw`
override def genericDecoder(schema: Schema): AvroDecoder[GenericRecord] = AvroRawDecoder.generic(schema)
override def genericEncoder(schema: Schema): AvroEncoder[GenericRecord] = AvroRawEncoder.generic(schema)
override def specificDecoder[T <: SpecificRecord: ClassTag]: AvroDecoder[T] = AvroRawDecoder.specific[T]
override def specificEncoder[T <: SpecificRecord: ClassTag]: AvroEncoder[T] = AvroRawEncoder.specific[T]
override def reflectDecoder[T: ClassTag]: AvroDecoder[T] = AvroRawDecoder.reflect[T]
override def reflectEncoder[T: ClassTag]: AvroEncoder[T] = AvroRawEncoder.reflect[T]
}
object AvroRawSupport extends AvroRawSupport
trait AvroJsonSupport extends AvroProtocolAllSupport {
override def contentType: ContentType = ContentTypes.`application/json`
override def genericDecoder(schema: Schema): AvroDecoder[GenericRecord] = AvroJsonDecoder.generic(schema)
override def genericEncoder(schema: Schema): AvroEncoder[GenericRecord] = AvroJsonEncoder.generic(schema)
override def specificDecoder[T <: SpecificRecord: ClassTag]: AvroDecoder[T] = AvroJsonDecoder.specific[T]
override def specificEncoder[T <: SpecificRecord: ClassTag]: AvroEncoder[T] = AvroJsonEncoder.specific[T]
override def reflectDecoder[T: ClassTag]: AvroDecoder[T] = AvroJsonDecoder.reflect[T]
override def reflectEncoder[T: ClassTag]: AvroEncoder[T] = AvroJsonEncoder.reflect[T]
}
object AvroJsonSupport extends AvroJsonSupport
trait AvroSupport extends AvroAllSupport {
override def avroGenericUnmarshaller(schema: Schema): FromEntityUnmarshaller[GenericRecord] =
Unmarshaller.firstOf(
AvroJsonSupport.avroGenericUnmarshaller(schema),
AvroRawSupport.avroGenericUnmarshaller(schema),
AvroBinarySupport.avroGenericUnmarshaller(schema)
)
override def avroGenericMarshaller(schema: Schema): ToEntityMarshaller[GenericRecord] =
Marshaller.oneOf(
AvroJsonSupport.avroGenericMarshaller(schema),
AvroRawSupport.avroGenericMarshaller(schema),
AvroBinarySupport.avroGenericMarshaller(schema)
)
override implicit def avroSpecificUnmarshaller[T <: SpecificRecord: ClassTag]: FromEntityUnmarshaller[T] =
Unmarshaller.firstOf(
AvroJsonSupport.avroSpecificUnmarshaller[T],
AvroRawSupport.avroSpecificUnmarshaller[T],
AvroBinarySupport.avroSpecificUnmarshaller[T]
)
override implicit def avroSpecificMarshaller[T <: SpecificRecord: ClassTag]: ToEntityMarshaller[T] =
Marshaller.oneOf(
AvroJsonSupport.avroSpecificMarshaller[T],
AvroRawSupport.avroSpecificMarshaller[T],
AvroBinarySupport.avroSpecificMarshaller[T]
)
override def avroReflectUnmarshaller[T: ClassTag]: FromEntityUnmarshaller[T] =
Unmarshaller.firstOf(
AvroJsonSupport.avroReflectUnmarshaller[T],
AvroRawSupport.avroReflectUnmarshaller[T],
AvroBinarySupport.avroReflectUnmarshaller[T]
)
override def avroReflectMarshaller[T: ClassTag]: ToEntityMarshaller[T] =
Marshaller.oneOf(
AvroJsonSupport.avroReflectMarshaller[T],
AvroRawSupport.avroReflectMarshaller[T],
AvroBinarySupport.avroReflectMarshaller[T]
)
}
object AvroSupport extends AvroSupport