feat(apollo): add schema registry to the agent using Tapir library. A…

…TL-1334 (#94)

* [ATL-2014] build: External registry set to domain name
* feat(pollux): implement schema-registry in-memory using Tapir
Co-authored-by: David <david.poltorak@iohk.io>

infrastructure/local/haproxy/haproxy.cfg

@@ -27,6 +27,7 @@ frontend https-in
     use_backend mediator      if { path_beg -i /mediator }
     use_backend swagger-ui   if { path_beg -i /apidocs }
     use_backend prism-agent  if { path_beg -i /prism-agent }
+    use_backend prism-agent-tapir  if { path_beg -i /tapir }
 
 backend mediator
     balance roundrobin
@@ -42,6 +43,13 @@ backend prism-agent
     option forwardfor
     server s1 prism-agent:8080 maxconn 32
 
+backend prism-agent-tapir
+    balance roundrobin
+    http-request set-uri %[url,regsub(^/tapir,,)] if { path_beg /tapir }
+    option httpclose
+    option forwardfor
+    server s1 prism-agent:8085 maxconn 32
+
 backend swagger-ui
     balance roundrobin
     option httpclose

prism-agent/service/build.sbt

@@ -60,7 +60,7 @@ lazy val server = project
     Docker / dockerUsername := Some("input-output-hk"),
     Docker / githubOwner := "atala-prism-building-blocks",
     Docker / dockerRepository := Some("ghcr.io"),
-    dockerExposedPorts := Seq(8080),
+    dockerExposedPorts := Seq(8080, 8085),
     dockerBaseImage := "openjdk:11"
   )
   .enablePlugins(OpenApiGeneratorPlugin, JavaAppPackaging, DockerPlugin)

prism-agent/service/project/Dependencies.scala

@@ -5,19 +5,24 @@ object Dependencies {
     val zio = "2.0.2"
     val zioConfig = "3.0.2"
     val zioHttp = "2.0.0-RC11"
+    val zioInteropCats = "3.3.0"
     val akka = "2.6.20"
     val akkaHttp = "10.2.9"
     val castor = "0.2.0"
     val pollux = "0.3.0"
     val bouncyCastle = "1.70"
     val logback = "1.4.4"
     val mercury = "0.6.0"
+    val zioJson = "0.3.0"
+    val tapir = "1.2.2"
   }
 
   private lazy val zio = "dev.zio" %% "zio" % Versions.zio
   private lazy val zioConfig = "dev.zio" %% "zio-config" % Versions.zioConfig
   private lazy val zioConfigMagnolia = "dev.zio" %% "zio-config-magnolia" % Versions.zioConfig
   private lazy val zioConfigTypesafe = "dev.zio" %% "zio-config-typesafe" % Versions.zioConfig
+  private lazy val zioJson = "dev.zio" %% "zio-json" % Versions.zioJson
+  private lazy val zioInteropCats = "dev.zio" %% "zio-interop-cats" % Versions.zioInteropCats
 
   private lazy val zioTest = "dev.zio" %% "zio-test" % Versions.zio % Test
   private lazy val zioTestSbt = "dev.zio" %% "zio-test-sbt" % Versions.zio % Test
@@ -45,26 +50,47 @@ object Dependencies {
 
   private lazy val logback = "ch.qos.logback" % "logback-classic" % Versions.logback
 
+  private lazy val tapirSwaggerUiBundle = "com.softwaremill.sttp.tapir" %% "tapir-swagger-ui-bundle" % Versions.tapir
+  private lazy val tapirJsonZio = "com.softwaremill.sttp.tapir" %% "tapir-json-zio" % Versions.tapir
+
+  private lazy val tapirZioHttpServer = "com.softwaremill.sttp.tapir" %% "tapir-zio-http-server" % Versions.tapir
+  private lazy val tapirHttp4sServerZio = "com.softwaremill.sttp.tapir" %% "tapir-http4s-server-zio" % Versions.tapir
+  private lazy val http4sBlazeServer = "org.http4s" %% "http4s-blaze-server" % "0.23.12"
+
+  private lazy val tapirRedocBundle = "com.softwaremill.sttp.tapir" %% "tapir-redoc-bundle" % Versions.tapir
+  private lazy val tapirSttpStubServer = "com.softwaremill.sttp.tapir" %% "tapir-sttp-stub-server" % Versions.tapir % Test
+
+
   // Dependency Modules
-  private lazy val baseDependencies: Seq[ModuleID] =
-    Seq(zio, zioTest, zioTestSbt, zioTestMagnolia, zioConfig, zioConfigMagnolia, zioConfigTypesafe)
+  private lazy val baseDependencies: Seq[ModuleID] = Seq(zio, zioTest, zioTestSbt, zioTestMagnolia, zioConfig, zioConfigMagnolia, zioConfigTypesafe, zioJson, logback, zioHttp)
   private lazy val castorDependencies: Seq[ModuleID] = Seq(castorCore, castorSqlDoobie)
   private lazy val polluxDependencies: Seq[ModuleID] = Seq(polluxCore, polluxSqlDoobie)
   private lazy val mercuryDependencies: Seq[ModuleID] = Seq(mercuryAgent)
   private lazy val akkaHttpDependencies: Seq[ModuleID] =
     Seq(akkaTyped, akkaStream, akkaHttp, akkaSprayJson).map(_.cross(CrossVersion.for3Use2_13))
   private lazy val bouncyDependencies: Seq[ModuleID] = Seq(bouncyBcpkix, bouncyBcprov)
+  private lazy val tapirDependencies: Seq[ModuleID] =
+    Seq(
+      tapirSwaggerUiBundle,
+      tapirJsonZio,
+      tapirRedocBundle,
+      tapirSttpStubServer,
+      tapirZioHttpServer,
+      tapirHttp4sServerZio,
+      http4sBlazeServer)
+
 
   // Project Dependencies
-  lazy val keyManagementDependencies: Seq[ModuleID] = baseDependencies ++ castorDependencies ++ bouncyDependencies
+  lazy val keyManagementDependencies: Seq[ModuleID] =
+      baseDependencies ++
+      castorDependencies ++
+      bouncyDependencies
+
   lazy val serverDependencies: Seq[ModuleID] =
-    baseDependencies ++
+      baseDependencies ++
       akkaHttpDependencies ++
       castorDependencies ++
       polluxDependencies ++
       mercuryDependencies ++
-      Seq(
-        zioHttp,
-        logback
-      )
+      tapirDependencies
 }

prism-agent/service/project/build.properties

@@ -1 +1 @@
-sbt.version=1.7.1
+sbt.version=1.7.2

prism-agent/service/project/build.sbt

@@ -2,5 +2,6 @@ addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.4.6")
 addSbtPlugin("com.codecommit" % "sbt-github-packages" % "0.5.3")
 addSbtPlugin("com.github.sbt" % "sbt-native-packager" % "1.9.9")
 addSbtPlugin("com.github.sbt" % "sbt-release" % "1.1.0")
+addDependencyTreePlugin
 
 libraryDependencies ++= Seq("org.openapitools" % "openapi-generator" % "6.0.0")

prism-agent/service/server/src/main/resources/application.conf

@@ -35,4 +35,13 @@ pollux {
         password = "postgres"
         password = ${?POLLUX_DB_PASSWORD}
     }
+}
+
+agent {
+    httpEndpoint {
+        http {
+            port = 8085
+            port =${?AGENT_HTTP_PORT}
+        }
+    }
 }

prism-agent/service/server/src/main/scala/io/iohk/atala/agent/server/Main.scala

@@ -75,7 +75,13 @@ object Main extends ZIOAppDefault {
         .debug
         .fork
 
-      _ <- Modules.app(restServicePort).provide(didCommLayer)
+      _ <- Modules
+        .app(restServicePort)
+        .provide(didCommLayer)
+        .fork
+
+      _ <- Modules.zioApp.fork
+      _ <- ZIO.never
     } yield ()
 
 }

prism-agent/service/server/src/main/scala/io/iohk/atala/agent/server/Modules.scala

@@ -6,7 +6,7 @@ import akka.actor.typed.ActorSystem
 import akka.actor.typed.scaladsl.Behaviors
 import akka.http.scaladsl.server.Route
 import doobie.util.transactor.Transactor
-import io.iohk.atala.agent.server.http.{HttpRoutes, HttpServer}
+import io.iohk.atala.agent.server.http.{HttpRoutes, HttpServer, ZHttp4sBlazeServer, ZHttpEndpoints}
 import io.iohk.atala.castor.core.service.{DIDService, DIDServiceImpl}
 import io.iohk.atala.agent.server.http.marshaller.{
   DIDApiMarshallerImpl,
@@ -73,6 +73,9 @@ import io.iohk.atala.mercury.protocol.issuecredential._
 import io.iohk.atala.pollux.core.model.error.IssueCredentialError
 import io.iohk.atala.pollux.core.model.error.IssueCredentialError.RepositoryError
 import java.io.IOException
+import cats.implicits.*
+import io.iohk.atala.pollux.schema.SchemaRegistryServerEndpoints
+import io.iohk.atala.pollux.service.SchemaRegistryServiceInMemory
 
 object Modules {
 
@@ -84,6 +87,19 @@ object Modules {
       .unit
   }
 
+  lazy val zioApp = {
+    val zioHttpServerApp = for {
+      allSchemaRegistryEndpoints <- SchemaRegistryServerEndpoints.all
+      allEndpoints = ZHttpEndpoints.withDocumentations[Task](allSchemaRegistryEndpoints)
+      appConfig <- ZIO.service[AppConfig]
+      httpServer <- ZHttp4sBlazeServer.start(allEndpoints, port = appConfig.agent.httpEndpoint.http.port)
+    } yield httpServer
+
+    zioHttpServerApp
+      .provideLayer(SchemaRegistryServiceInMemory.layer ++ SystemModule.configLayer)
+      .unit
+  }
+
   def didCommServiceEndpoint(port: Int) = {
     val header = "content-type" -> MediaTypes.contentTypeEncrypted
     val app: HttpApp[DidComm with CredentialService, Throwable] =
@@ -209,7 +225,6 @@ object Modules {
   }
 
 }
-
 object SystemModule {
   val actorSystemLayer: TaskLayer[ActorSystem[Nothing]] = ZLayer.scoped(
     ZIO.acquireRelease(

prism-agent/service/server/src/main/scala/io/iohk/atala/agent/server/config/AppConfig.scala

@@ -6,7 +6,8 @@ import zio.config.magnolia.Descriptor
 final case class AppConfig(
     iris: IrisConfig,
     castor: CastorConfig,
-    pollux: PolluxConfig
+    pollux: PolluxConfig,
+    agent: AgentConfig
 )
 
 object AppConfig {
@@ -21,3 +22,9 @@ final case class PolluxConfig(database: DatabaseConfig)
 final case class GrpcServiceConfig(host: String, port: Int)
 
 final case class DatabaseConfig(host: String, port: Int, databaseName: String, username: String, password: String)
+
+final case class AgentConfig(httpEndpoint: HttpEndpointConfig)
+
+final case class HttpEndpointConfig(http: HttpConfig)
+
+final case class HttpConfig(port: Int)

prism-agent/service/server/src/main/scala/io/iohk/atala/agent/server/http/ZHttpEndpoints.scala

@@ -0,0 +1,24 @@
+package io.iohk.atala.agent.server.http
+
+import zio.{Task, ZIO, ZLayer, URIO}
+import io.iohk.atala.pollux.schema.SchemaRegistryServerEndpoints
+import io.iohk.atala.pollux.service.SchemaRegistryService
+import sttp.tapir.redoc.bundle.RedocInterpreter
+import sttp.tapir.swagger.bundle.SwaggerInterpreter
+//import sttp.tapir.ztapir.{RichZServerEndpoint, ZServerEndpoint}
+import sttp.tapir.redoc.RedocUIOptions
+import sttp.tapir.server.ServerEndpoint
+import scala.concurrent.Future
+
+object ZHttpEndpoints {
+  def swaggerEndpoints[F[_]](apiEndpoints: List[ServerEndpoint[Any, F]]): List[ServerEndpoint[Any, F]] =
+    SwaggerInterpreter().fromServerEndpoints[F](apiEndpoints, "Prism Agent", "1.0.0")
+
+  def redocEndpoints[F[_]](apiEndpoints: List[ServerEndpoint[Any, F]]): List[ServerEndpoint[Any, F]] =
+    RedocInterpreter(redocUIOptions = RedocUIOptions.default.copy(pathPrefix = List("redoc")))
+      .fromServerEndpoints[F](apiEndpoints, title = "Prism Agent", version = "1.0.0")
+
+  def withDocumentations[F[_]](apiEndpoints: List[ServerEndpoint[Any, F]]): List[ServerEndpoint[Any, F]] = {
+    apiEndpoints ++ swaggerEndpoints[F](apiEndpoints) ++ redocEndpoints[F](apiEndpoints)
+  }
+}

prism-agent/service/server/src/main/scala/io/iohk/atala/agent/server/http/ZHttpServer.scala

@@ -0,0 +1,45 @@
+package io.iohk.atala.agent.server.http
+
+import cats.implicits.*
+import io.iohk.atala.agent.server.http.ZHttpEndpoints
+import io.iohk.atala.pollux.schema.SchemaRegistryServerEndpoints
+import io.iohk.atala.pollux.service.{SchemaRegistryService, SchemaRegistryServiceInMemory}
+import org.http4s.*
+import org.http4s.blaze.server.BlazeServerBuilder
+import org.http4s.server.Router
+import org.slf4j.LoggerFactory
+import sttp.model.StatusCode
+import sttp.tapir.server.ServerEndpoint
+import sttp.tapir.server.http4s.ztapir.ZHttp4sServerInterpreter
+import sttp.tapir.server.interceptor.log.DefaultServerLog
+import sttp.tapir.ztapir.ZServerEndpoint
+import zhttp.http.HttpApp
+import zhttp.service.server.ServerChannelFactory
+import zhttp.service.{EventLoopGroup, Server}
+import zio.interop.catz.*
+import zio.*
+
+import scala.concurrent.ExecutionContext.Implicits.global
+
+object ZHttp4sBlazeServer {
+  def start(
+      endpoints: List[ZServerEndpoint[Any, Any]],
+      port: Int
+  ): Task[ExitCode] = {
+    val http4sEndpoints: HttpRoutes[Task] =
+      ZHttp4sServerInterpreter().from(endpoints).toRoutes
+
+    val serve: Task[Unit] =
+      ZIO.executor.flatMap(executor =>
+        BlazeServerBuilder[Task]
+          .withExecutionContext(executor.asExecutionContext)
+          .bindHttp(port, "0.0.0.0")
+          .withHttpApp(Router("/" -> http4sEndpoints).orNotFound)
+          .serve
+          .compile
+          .drain
+      )
+
+    serve.exitCode
+  }
+}

prism-agent/service/server/src/main/scala/io/iohk/atala/api/http/FailureResponse.scala

@@ -0,0 +1,39 @@
+package io.iohk.atala.api.http
+
+import sttp.model.StatusCode
+import sttp.tapir.EndpointOutput.OneOf
+import sttp.tapir.generic.auto.*
+import sttp.tapir.json.zio.jsonBody
+import zio.json.{DeriveJsonDecoder, DeriveJsonEncoder}
+
+sealed trait FailureResponse
+
+case class NotFoundResponse(msg: String) extends FailureResponse
+
+object NotFoundResponse {
+  given encoder: zio.json.JsonEncoder[NotFoundResponse] = DeriveJsonEncoder.gen[NotFoundResponse]
+  given decoder: zio.json.JsonDecoder[NotFoundResponse] = DeriveJsonDecoder.gen[NotFoundResponse]
+}
+
+case class BadRequest(msg: String, errors: List[String] = List.empty) extends FailureResponse
+
+object BadRequest {
+  given encoder: zio.json.JsonEncoder[BadRequest] = DeriveJsonEncoder.gen[BadRequest]
+  given decoder: zio.json.JsonDecoder[BadRequest] = DeriveJsonDecoder.gen[BadRequest]
+}
+
+case class InternalServerError(msg: String) extends FailureResponse
+
+object InternalServerError {
+  given encoder: zio.json.JsonEncoder[InternalServerError] = DeriveJsonEncoder.gen[InternalServerError]
+  given decoder: zio.json.JsonDecoder[InternalServerError] = DeriveJsonDecoder.gen[InternalServerError]
+}
+
+//An RFC-7807 compliant data structure for reporting errors to the client
+case class ErrorResponse(`type`: String, title: String, status: Int, instance: String, details: Option[String])
+    extends FailureResponse
+
+object ErrorResponse {
+  given encoder: zio.json.JsonEncoder[ErrorResponse] = DeriveJsonEncoder.gen[ErrorResponse]
+  given decoder: zio.json.JsonDecoder[ErrorResponse] = DeriveJsonDecoder.gen[ErrorResponse]
+}

prism-agent/service/server/src/main/scala/io/iohk/atala/pollux/schema/Models.scala

@@ -0,0 +1,66 @@
+package io.iohk.atala.pollux.schema
+
+import zio.json.{DeriveJsonDecoder, DeriveJsonEncoder}
+
+import java.time.ZonedDateTime
+import java.util.UUID
+
+case class VerifiableCredentialsSchemaInput(
+    id: Option[UUID],
+    name: String,
+    version: String,
+    description: Option[String],
+    attributes: List[String],
+    authored: Option[ZonedDateTime],
+    tags: List[String]
+)
+object VerifiableCredentialsSchemaInput {
+  given encoder: zio.json.JsonEncoder[VerifiableCredentialsSchemaInput] =
+    DeriveJsonEncoder.gen[VerifiableCredentialsSchemaInput]
+  given decoder: zio.json.JsonDecoder[VerifiableCredentialsSchemaInput] =
+    DeriveJsonDecoder.gen[VerifiableCredentialsSchemaInput]
+}
+
+case class VerifiableCredentialsSchema(
+    id: UUID,
+    name: String,
+    version: String,
+    tags: List[String],
+    description: Option[String],
+    attributes: List[String],
+    author: String,
+    authored: ZonedDateTime,
+    proof: Option[Proof]
+)
+
+object VerifiableCredentialsSchema {
+  def apply(in: VerifiableCredentialsSchemaInput): VerifiableCredentialsSchema =
+    VerifiableCredentialsSchema(
+      id = in.id.getOrElse(UUID.randomUUID()),
+      name = in.name,
+      version = in.version,
+      tags = in.tags,
+      description = in.description,
+      attributes = in.attributes,
+      author = "Prism Agent",
+      authored = in.authored.getOrElse(ZonedDateTime.now()),
+      proof = None
+    )
+
+  given encoder: zio.json.JsonEncoder[VerifiableCredentialsSchema] = DeriveJsonEncoder.gen[VerifiableCredentialsSchema]
+  given decoder: zio.json.JsonDecoder[VerifiableCredentialsSchema] = DeriveJsonDecoder.gen[VerifiableCredentialsSchema]
+}
+
+case class Proof(
+    `type`: String,
+    created: ZonedDateTime,
+    verificationMethod: String,
+    proofPurpose: String,
+    proofValue: String,
+    domain: Option[String]
+)
+
+object Proof {
+  given encoder: zio.json.JsonEncoder[Proof] = DeriveJsonEncoder.gen[Proof]
+  given decoder: zio.json.JsonDecoder[Proof] = DeriveJsonDecoder.gen[Proof]
+}