Merge branch 'master' into master

.github/workflows/ci.yml

@@ -68,7 +68,7 @@ jobs:
         run: sbt ++${{ matrix.scala }} test
 
       - name: Compress target directories
-        run: tar cf targets.tar modules/zioJson/target modules/tests/target modules/tethys/target modules/pureconfig/target modules/catsTagless/target modules/ciris/target modules/scalacheck/target modules/circeMagnolia/target modules/circe/target target modules/tethysMagnolia/target modules/cats/target modules/zioSchema/target modules/core/target modules/sangria/target modules/reactivemongo/target project/target
+        run: tar cf targets.tar modules/tests/target modules/zioJson/target modules/tethys/target modules/pureconfig/target modules/catsTagless/target modules/ciris/target modules/scalacheck/target modules/circeMagnolia/target modules/circe/target target modules/tethysMagnolia/target modules/cats/target modules/core/target modules/vulcan/target modules/sangria/target modules/reactivemongo/target project/target
 
       - name: Upload target directories
         uses: actions/upload-artifact@v2

README.md

@@ -202,7 +202,7 @@ assert(parse("""{"stringName":"WWW","integerAge":20}""").flatMap(_.as[Bar]) == R
 ```
 
 To change default `io.circe.magnolia.configured.Configuration`:
-```
+```scala
 import derevo.derive
 import derevo.circe.magnolia.{customizableDecoder, customizableEncoder}
 

build.sbt

@@ -53,6 +53,7 @@ lazy val derevo = project
     sangria,
     zioJson,
     zioSchema,
+    vulcan,
     tests,
   )
 
@@ -181,6 +182,13 @@ lazy val zioSchema =
     .settings(
       name := "derevo-zio-schema",
       libraryDependencies ++= Seq(Dependencies.zioSchema, Dependencies.zioSchemaDerivation),
+
+lazy val vulcan =
+  (project in file("modules/vulcan"))
+    .settings(publishSettings)
+    .settings(
+      name := "derevo-vulcan",
+      libraryDependencies ++= Seq(Dependencies.vulcanGeneric),
     )
     .dependsOn(core)
 

modules/vulcan/src/main/scala/derevo/vulcan/avroCodec.scala

@@ -0,0 +1,18 @@
+package derevo.vulcan
+
+import derevo.{Derivation, NewTypeDerivation}
+import magnolia.{CaseClass, Magnolia, SealedTrait}
+import vulcan.Codec
+import vulcan.generic._
+
+object avroCodec extends Derivation[Codec] with NewTypeDerivation[Codec] {
+
+  type Typeclass[A] = Codec[A]
+
+  def combine[A](caseClass: CaseClass[Codec, A]): Codec[A] = Codec.combine(caseClass)
+
+  def dispatch[A](sealedTrait: SealedTrait[Codec, A]): Codec.Aux[Any, A] = Codec.dispatch(sealedTrait)
+
+  def instance[A]: Codec[A] = macro Magnolia.gen[A]
+
+}

modules/vulcan/src/test/scala/derevo/vulcan/AvroCodecTest.scala

@@ -0,0 +1,37 @@
+package derevo.vulcan
+
+import org.apache.avro.Schema
+import derevo.derive
+import org.scalatest.Assertion
+import org.scalatest.flatspec.AnyFlatSpec
+import org.scalatest.matchers.should.Matchers
+import vulcan.Codec
+import vulcan.generic.{AvroDoc, AvroName}
+
+import java.time.Instant
+
+@derive(avroCodec)
+case class Foo(i: Int, s: String, bar: Bar)
+
+@derive(avroCodec)
+case class Bar(
+    @AvroName("time_dttm") @AvroDoc("Timestamp")
+    timestamp: Instant,
+    @AvroName("int_list") @AvroDoc("List of ints")
+    intList: List[Int]
+)
+
+class AvroCodecTest extends AnyFlatSpec with Matchers {
+
+  val fooSchema: String =
+    """{"type":"record","name":"Foo","namespace":"derevo.vulcan","fields":[{"name":"i","type":"int"},{"name":"s","type":"string"},{"name":"bar","type":{"type":"record","name":"Bar","fields":[{"name":"time_dttm","type":{"type":"long","logicalType":"timestamp-millis"},"doc":"Timestamp"},{"name":"int_list","type":{"type":"array","items":"int"},"doc":"List of ints"}]}}]}"""
+
+  def assertSchema[A: Codec](schemaStr: String): Assertion = {
+    val expectedSchema = new Schema.Parser().parse(schemaStr.mkString.trim)
+    Codec[A].schema shouldBe Right(expectedSchema)
+  }
+
+  "Writer derivation for ADT" should "work correctly" in {
+    assertSchema[Foo](fooSchema)
+  }
+}

project/Dependencies.scala

@@ -45,6 +45,8 @@ object Dependencies {
     val zioJson = "0.6.2"
 
     val zioSchema = "1.1.1"
+
+    val vulcan = "1.10.1"
   }
 
   lazy val magnolia                = "com.propensive"        %% "magnolia"                  % Version.magnolia
@@ -74,6 +76,8 @@ object Dependencies {
   lazy val zioSchemaDerivation = "dev.zio" %% "zio-schema-derivation" % Version.zioSchema
   lazy val zioJson             = "dev.zio" %% "zio-json"              % Version.zioJson
 
+  lazy val vulcanGeneric = "com.github.fd4s" %% "vulcan-generic" % Version.vulcan
+
   lazy val macroParadise = "org.scalamacros" % "paradise"       % Version.macroParadise cross CrossVersion.patch
   lazy val kindProjector = "org.typelevel"  %% "kind-projector" % Version.kindProjector cross CrossVersion.patch