zio.http.netty.client.ClientResponseStreamHandler.scala Maven / Gradle / Ivy

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/*
 * Copyright 2021 - 2023 Sporta Technologies PVT LTD & the ZIO HTTP contributors.
 *
 * 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 zio.http.netty.client

import zio._
import zio.stacktracer.TracingImplicits.disableAutoTrace

import zio.http.Status
import zio.http.internal.ChannelState
import zio.http.netty.AsyncBodyReader

import io.netty.channel._
import io.netty.handler.codec.http.{HttpContent, LastHttpContent}

private[netty] final class ClientResponseStreamHandler(
  onComplete: Promise[Throwable, ChannelState],
  keepAlive: Boolean,
  status: Status,
)(implicit trace: Trace)
    extends AsyncBodyReader { self =>

  private implicit val unsafe: Unsafe = Unsafe.unsafe

  override def onLastMessage(): Unit =
    if (keepAlive)
      onComplete.unsafe.done(Exit.succeed(ChannelState.forStatus(status)))
    else
      onComplete.unsafe.done(Exit.succeed(ChannelState.Invalid))

  override def channelRead0(ctx: ChannelHandlerContext, msg: HttpContent): Unit = {
    val isLast = msg.isInstanceOf[LastHttpContent]
    super.channelRead0(ctx, msg)
    if (isLast && !keepAlive) ctx.close(): Unit
  }

  override def exceptionCaught(ctx: ChannelHandlerContext, cause: Throwable): Unit =
    onComplete.unsafe.done(Exit.fail(cause))
}