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package com.softwaremill.sttp.asynchttpclient.scalaz
import java.nio.ByteBuffer
import com.softwaremill.sttp.{MonadAsyncError, SttpHandler}
import com.softwaremill.sttp.asynchttpclient.AsyncHttpClientHandler
import org.asynchttpclient.{
AsyncHttpClient,
AsyncHttpClientConfig,
DefaultAsyncHttpClient
}
import org.reactivestreams.Publisher
import scalaz.{-\/, \/-}
import scalaz.concurrent.Task
class AsyncHttpClientScalazHandler private (asyncHttpClient: AsyncHttpClient,
closeClient: Boolean)
extends AsyncHttpClientHandler[Task, Nothing](asyncHttpClient,
TaskMonad,
closeClient) {
override protected def streamBodyToPublisher(
s: Nothing): Publisher[ByteBuffer] = s // nothing is everything
override protected def publisherToStreamBody(
p: Publisher[ByteBuffer]): Nothing =
throw new IllegalStateException("This handler does not support streaming")
}
object AsyncHttpClientScalazHandler {
def apply(): SttpHandler[Task, Nothing] =
new AsyncHttpClientScalazHandler(new DefaultAsyncHttpClient(),
closeClient = true)
def usingConfig(cfg: AsyncHttpClientConfig): SttpHandler[Task, Nothing] =
new AsyncHttpClientScalazHandler(new DefaultAsyncHttpClient(cfg),
closeClient = true)
def usingClient(client: AsyncHttpClient): SttpHandler[Task, Nothing] =
new AsyncHttpClientScalazHandler(client, closeClient = false)
}
private[scalaz] object TaskMonad extends MonadAsyncError[Task] {
override def unit[T](t: T): Task[T] = Task.point(t)
override def map[T, T2](fa: Task[T], f: (T) => T2): Task[T2] = fa.map(f)
override def flatMap[T, T2](fa: Task[T], f: (T) => Task[T2]): Task[T2] =
fa.flatMap(f)
override def async[T](
register: ((Either[Throwable, T]) => Unit) => Unit): Task[T] =
Task.async { cb =>
register {
case Left(t) => cb(-\/(t))
case Right(t) => cb(\/-(t))
}
}
override def error[T](t: Throwable): Task[T] = Task.fail(t)
}
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