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package com.softwaremill.sttp.asynchttpclient.monix
import java.nio.ByteBuffer
import com.softwaremill.sttp.asynchttpclient.AsyncHttpClientBackend
import com.softwaremill.sttp.impl.monix.TaskMonadAsyncError
import com.softwaremill.sttp.{FollowRedirectsBackend, SttpBackend, SttpBackendOptions, Utf8, concatByteBuffers}
import io.netty.buffer.{ByteBuf, Unpooled}
import monix.eval.Task
import monix.execution.Scheduler
import monix.reactive.Observable
import org.asynchttpclient.{AsyncHttpClient, AsyncHttpClientConfig, DefaultAsyncHttpClient}
import org.reactivestreams.Publisher
class AsyncHttpClientMonixBackend private (asyncHttpClient: AsyncHttpClient, closeClient: Boolean)(
implicit scheduler: Scheduler)
extends AsyncHttpClientBackend[Task, Observable[ByteBuffer]](asyncHttpClient, TaskMonadAsyncError, closeClient) {
override protected def streamBodyToPublisher(s: Observable[ByteBuffer]): Publisher[ByteBuf] =
s.map(Unpooled.wrappedBuffer).toReactivePublisher
override protected def publisherToStreamBody(p: Publisher[ByteBuffer]): Observable[ByteBuffer] =
Observable.fromReactivePublisher(p)
override protected def publisherToString(p: Publisher[ByteBuffer]): Task[String] = {
val bytes = Observable
.fromReactivePublisher(p)
.foldLeftL(ByteBuffer.allocate(0))(concatByteBuffers)
bytes.map(bb => new String(bb.array(), Utf8))
}
}
object AsyncHttpClientMonixBackend {
private def apply(asyncHttpClient: AsyncHttpClient, closeClient: Boolean)(
implicit scheduler: Scheduler): SttpBackend[Task, Observable[ByteBuffer]] =
new FollowRedirectsBackend(new AsyncHttpClientMonixBackend(asyncHttpClient, closeClient))
/**
* @param s The scheduler used for streaming request bodies. Defaults to the
* global scheduler.
*/
def apply(options: SttpBackendOptions = SttpBackendOptions.Default)(
implicit s: Scheduler = Scheduler.Implicits.global): SttpBackend[Task, Observable[ByteBuffer]] =
AsyncHttpClientMonixBackend(AsyncHttpClientBackend.defaultClient(options), closeClient = true)
/**
* @param s The scheduler used for streaming request bodies. Defaults to the
* global scheduler.
*/
def usingConfig(cfg: AsyncHttpClientConfig)(
implicit s: Scheduler = Scheduler.Implicits.global): SttpBackend[Task, Observable[ByteBuffer]] =
AsyncHttpClientMonixBackend(new DefaultAsyncHttpClient(cfg), closeClient = true)
/**
* @param s The scheduler used for streaming request bodies. Defaults to the
* global scheduler.
*/
def usingClient(client: AsyncHttpClient)(
implicit s: Scheduler = Scheduler.Implicits.global): SttpBackend[Task, Observable[ByteBuffer]] =
AsyncHttpClientMonixBackend(client, closeClient = false)
}
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