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Optimize some zio.http.endpoint.Endpoint code #3213

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Optimize some zio.http.endpoint.Endpoint code #3213

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0f11e9a
Optimize some `zio.http.endpoint.Endpoint` code
guizmaii Nov 19, 2024
ab6e100
fix compilation && fmt
guizmaii Nov 26, 2024
e5d11f4
Merge branch 'main' into optimise/handlers
guizmaii Dec 3, 2024
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102 changes: 52 additions & 50 deletions zio-http/shared/src/main/scala/zio/http/endpoint/Endpoint.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -55,7 +55,8 @@ final case class Endpoint[PathInput, Input, Err, Output, Auth <: AuthType](
codecError: HttpCodec[HttpCodecType.ResponseType, HttpCodecError],
documentation: Doc,
authType: Auth,
) { self =>
) {
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Unrelated and unnecessary format change

self =>

val authCombiner: Combiner[Input, authType.ClientRequirement] =
implicitly[Combiner[Input, authType.ClientRequirement]]
Expand All @@ -67,6 +68,7 @@ final case class Endpoint[PathInput, Input, Err, Output, Auth <: AuthType](
): HttpCodec[HttpCodecType.RequestType, AuthedInput] = {
input ++ authCodec
}.asInstanceOf[HttpCodec[HttpCodecType.RequestType, AuthedInput]]

type AuthedInput = authCombiner.Out

/**
Expand Down Expand Up @@ -257,34 +259,35 @@ final case class Endpoint[PathInput, Input, Err, Output, Auth <: AuthType](
def implementHandler[Env](original: Handler[Env, Err, Input, Output])(implicit trace: Trace): Route[Env, Nothing] = {
import HttpCodecError.asHttpCodecError

def authCodec(authType: AuthType): HttpCodec[HttpCodecType.RequestType, Unit] = authType match {
case AuthType.None => HttpCodec.empty
case AuthType.Basic =>
HeaderCodec.authorization.transformOrFail {
case Header.Authorization.Basic(_, _) => Right(())
case _ => Left("Basic auth required")
} { case () =>
Left("Unsupported")
}
case AuthType.Bearer =>
HeaderCodec.authorization.transformOrFail {
case Header.Authorization.Bearer(_) => Right(())
case _ => Left("Bearer auth required")
} { case () =>
Left("Unsupported")
}
case AuthType.Digest =>
HeaderCodec.authorization.transformOrFail {
case _: Header.Authorization.Digest => Right(())
case _ => Left("Digest auth required")
} { case () =>
Left("Unsupported")
}
case AuthType.Custom(codec) =>
codec.transformOrFailRight[Unit](_ => ())(_ => Left("Unsupported"))
case AuthType.Or(auth1, auth2, _) =>
authCodec(auth1).orElseEither(authCodec(auth2))(Alternator.leftRightEqual[Unit])
}
def authCodec(authType: AuthType): HttpCodec[HttpCodecType.RequestType, Unit] =
authType match {
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Unrelated and unnecessary format change

case AuthType.None => HttpCodec.empty
case AuthType.Basic =>
HeaderCodec.authorization.transformOrFail {
case Header.Authorization.Basic(_, _) => Right(())
case _ => Left("Basic auth required")
} { case () =>
Left("Unsupported")
}
case AuthType.Bearer =>
HeaderCodec.authorization.transformOrFail {
case Header.Authorization.Bearer(_) => Right(())
case _ => Left("Bearer auth required")
} { case () =>
Left("Unsupported")
}
case AuthType.Digest =>
HeaderCodec.authorization.transformOrFail {
case _: Header.Authorization.Digest => Right(())
case _ => Left("Digest auth required")
} { case () =>
Left("Unsupported")
}
case AuthType.Custom(codec) =>
codec.transformOrFailRight[Unit](_ => ())(_ => Left("Unsupported"))
case AuthType.Or(auth1, auth2, _) =>
authCodec(auth1).orElseEither(authCodec(auth2))(Alternator.leftRightEqual[Unit])
}

val maybeUnauthedResponse = authType.asInstanceOf[AuthType] match {
case AuthType.None => None
Expand All @@ -295,13 +298,11 @@ final case class Endpoint[PathInput, Input, Err, Output, Auth <: AuthType](
self.alternatives.map { case (endpoint, condition) =>
Handler.fromFunctionZIO { (request: zio.http.Request) =>
val outputMediaTypes =
NonEmptyChunk
.fromChunk(
request.headers
.getAll(Header.Accept)
.flatMap(_.mimeTypes),
)
.getOrElse(defaultMediaTypes)
request.headers
.getAll(Header.Accept)
.flatMap(_.mimeTypes)
.nonEmptyOrElse(defaultMediaTypes)(ZIO.identityFn)

(endpoint.input ++ authCodec(endpoint.authType)).decodeRequest(request, config).orDie.flatMap { value =>
original(value).map(endpoint.output.encodeResponse(_, outputMediaTypes, config)).catchAll { error =>
ZIO.succeed(endpoint.error.encodeResponse(error, outputMediaTypes, config))
Expand All @@ -311,15 +312,17 @@ final case class Endpoint[PathInput, Input, Err, Output, Auth <: AuthType](
}

// TODO: What to do if there are no endpoints??
def handlers2(handlers: Chunk[(Handler[Env, Nothing, Request, Response], HttpCodec.Fallback.Condition)]) =
NonEmptyChunk
.fromChunk(handlers)
.getOrElse(
NonEmptyChunk(
Handler.fail(zio.http.Response(status = Status.NotFound)) -> HttpCodec.Fallback.Condition.IsHttpCodecError,
),
def handlers2(
handlers: Chunk[(Handler[Env, Nothing, Request, Response], HttpCodec.Fallback.Condition)],
): NonEmptyChunk[(Handler[Env, Response, Request, Response], HttpCodec.Fallback.Condition)] = {
def noFound: NonEmptyChunk[(Handler[Env, Response, Request, Response], HttpCodec.Fallback.Condition)] =
NonEmptyChunk(
Handler.fail(zio.http.Response(status = Status.NotFound)) -> HttpCodec.Fallback.Condition.IsHttpCodecError,
)

handlers.nonEmptyOrElse(ifEmpty = noFound)(ZIO.identityFn)
}

val handler =
Handler.fromZIO(CodecConfig.codecRef.get).flatMap { config =>
val hdlrs = handlers(config)
Expand All @@ -343,13 +346,12 @@ final case class Endpoint[PathInput, Input, Err, Output, Auth <: AuthType](
val error = cause.defects.head.asInstanceOf[HttpCodecError]
val response = {
val outputMediaTypes =
NonEmptyChunk
.fromChunk(
request.headers
.getAll(Header.Accept)
.flatMap(_.mimeTypes) :+ MediaTypeWithQFactor(MediaType.application.`json`, Some(0.0)),
)
.getOrElse(defaultMediaTypes)
(
request.headers
.getAll(Header.Accept)
.flatMap(_.mimeTypes) :+ MediaTypeWithQFactor(MediaType.application.`json`, Some(0.0))
).nonEmptyOrElse(defaultMediaTypes)(ZIO.identityFn)

codecError.encodeResponse(error, outputMediaTypes, config)
}
ZIO.succeed(response)
Expand Down
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