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Merge pull request #628 from armanbilge/http4s-blaze
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| version = 3.5.2 | ||
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| style = default | ||
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| maxColumn = 100 | ||
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| // Vertical alignment is pretty, but leads to bigger diffs | ||
| align.preset = none | ||
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| danglingParentheses.preset = false | ||
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| rewrite.rules = [ | ||
| AvoidInfix | ||
| RedundantBraces | ||
| RedundantParens | ||
| AsciiSortImports | ||
| PreferCurlyFors | ||
| ] | ||
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| runner.dialect = scala213source3 |
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39 changes: 39 additions & 0 deletions
39
blaze-client/src/main/scala/org/http4s/blaze/client/BasicManager.scala
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| /* | ||
| * Copyright 2014 http4s.org | ||
| * | ||
| * 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. | ||
| */ | ||
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| package org.http4s | ||
| package blaze | ||
| package client | ||
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| import cats.effect._ | ||
| import cats.syntax.all._ | ||
| import org.http4s.client.RequestKey | ||
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| private final class BasicManager[F[_], A <: Connection[F]](builder: ConnectionBuilder[F, A])( | ||
| implicit F: Sync[F] | ||
| ) extends ConnectionManager[F, A] { | ||
| def borrow(requestKey: RequestKey): F[NextConnection] = | ||
| builder(requestKey).map(NextConnection(_, fresh = true)) | ||
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| override def shutdown: F[Unit] = | ||
| F.unit | ||
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| override def invalidate(connection: A): F[Unit] = | ||
| F.delay(connection.shutdown()) | ||
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| override def release(connection: A): F[Unit] = | ||
| invalidate(connection) | ||
| } |
164 changes: 164 additions & 0 deletions
164
blaze-client/src/main/scala/org/http4s/blaze/client/BlazeClient.scala
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,164 @@ | ||
| /* | ||
| * Copyright 2014 http4s.org | ||
| * | ||
| * 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. | ||
| */ | ||
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| package org.http4s | ||
| package blaze | ||
| package client | ||
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| import cats.Applicative | ||
| import cats.effect.implicits._ | ||
| import cats.effect.kernel.Async | ||
| import cats.effect.kernel.Deferred | ||
| import cats.effect.kernel.Resource | ||
| import cats.effect.kernel.Resource.ExitCase | ||
| import cats.effect.std.Dispatcher | ||
| import cats.syntax.all._ | ||
| import org.http4s.blaze.util.TickWheelExecutor | ||
| import org.http4s.blazecore.ResponseHeaderTimeoutStage | ||
| import org.http4s.client.Client | ||
| import org.http4s.client.DefaultClient | ||
| import org.http4s.client.RequestKey | ||
| import org.http4s.client.UnexpectedStatus | ||
| import org.http4s.client.middleware.Retry | ||
| import org.http4s.client.middleware.RetryPolicy | ||
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| import java.net.SocketException | ||
| import java.nio.ByteBuffer | ||
| import java.util.concurrent.TimeoutException | ||
| import scala.concurrent.ExecutionContext | ||
| import scala.concurrent.duration._ | ||
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| /** Blaze client implementation */ | ||
| object BlazeClient { | ||
| private[blaze] def makeClient[F[_], A <: BlazeConnection[F]]( | ||
| manager: ConnectionManager[F, A], | ||
| responseHeaderTimeout: Duration, | ||
| requestTimeout: Duration, | ||
| scheduler: TickWheelExecutor, | ||
| ec: ExecutionContext, | ||
| retries: Int, | ||
| dispatcher: Dispatcher[F], | ||
| )(implicit F: Async[F]): Client[F] = { | ||
| val base = new BlazeClient[F, A]( | ||
| manager, | ||
| responseHeaderTimeout, | ||
| requestTimeout, | ||
| scheduler, | ||
| ec, | ||
| dispatcher, | ||
| ) | ||
| if (retries > 0) | ||
| Retry(retryPolicy(retries))(base) | ||
| else | ||
| base | ||
| } | ||
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| private[this] val retryNow = Duration.Zero.some | ||
| private def retryPolicy[F[_]](retries: Int): RetryPolicy[F] = { (req, result, n) => | ||
| result match { | ||
| case Left(_: SocketException) if n <= retries && req.isIdempotent => retryNow | ||
| case _ => None | ||
| } | ||
| } | ||
| } | ||
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| private class BlazeClient[F[_], A <: BlazeConnection[F]]( | ||
| manager: ConnectionManager[F, A], | ||
| responseHeaderTimeout: Duration, | ||
| requestTimeout: Duration, | ||
| scheduler: TickWheelExecutor, | ||
| ec: ExecutionContext, | ||
| dispatcher: Dispatcher[F], | ||
| )(implicit F: Async[F]) | ||
| extends DefaultClient[F] { | ||
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| override def run(req: Request[F]): Resource[F, Response[F]] = { | ||
| val key = RequestKey.fromRequest(req) | ||
| for { | ||
| requestTimeoutF <- scheduleRequestTimeout(key) | ||
| preparedConnection <- prepareConnection(key) | ||
| (conn, responseHeaderTimeoutF) = preparedConnection | ||
| timeout = responseHeaderTimeoutF.race(requestTimeoutF).map(_.merge) | ||
| responseResource <- Resource.eval(runRequest(conn, req, timeout)) | ||
| response <- responseResource | ||
| } yield response | ||
| } | ||
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| override def defaultOnError(req: Request[F])(resp: Response[F])(implicit | ||
| G: Applicative[F] | ||
| ): F[Throwable] = | ||
| resp.body.compile.drain.as(UnexpectedStatus(resp.status, req.method, req.uri)) | ||
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| private def prepareConnection(key: RequestKey): Resource[F, (A, F[TimeoutException])] = for { | ||
| conn <- borrowConnection(key) | ||
| responseHeaderTimeoutF <- addResponseHeaderTimeout(conn) | ||
| } yield (conn, responseHeaderTimeoutF) | ||
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| private def borrowConnection(key: RequestKey): Resource[F, A] = | ||
| Resource.makeCase(manager.borrow(key).map(_.connection)) { | ||
| case (conn, ExitCase.Canceled) => | ||
| // Currently we can't just release in case of cancellation, because cancellation clears the Write state of Http1Connection, so it might result in isRecycle=true even if there's a half-written request. | ||
| manager.invalidate(conn) | ||
| case (conn, _) => manager.release(conn) | ||
| } | ||
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| private def addResponseHeaderTimeout(conn: A): Resource[F, F[TimeoutException]] = | ||
| responseHeaderTimeout match { | ||
| case d: FiniteDuration => | ||
| Resource.apply( | ||
| Deferred[F, Either[Throwable, TimeoutException]].flatMap(timeout => | ||
| F.delay { | ||
| val stage = new ResponseHeaderTimeoutStage[ByteBuffer](d, scheduler, ec) | ||
| conn.spliceBefore(stage) | ||
| stage.init(e => dispatcher.unsafeRunSync(timeout.complete(e).void)) | ||
| (timeout.get.rethrow, F.delay(stage.removeStage())) | ||
| } | ||
| ) | ||
| ) | ||
| case _ => resourceNeverTimeoutException | ||
| } | ||
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| private def scheduleRequestTimeout(key: RequestKey): Resource[F, F[TimeoutException]] = | ||
| requestTimeout match { | ||
| case d: FiniteDuration => | ||
| Resource.pure(F.async[TimeoutException] { cb => | ||
| F.delay( | ||
| scheduler.schedule( | ||
| () => | ||
| cb( | ||
| Right(new TimeoutException(s"Request to $key timed out after ${d.toMillis} ms")) | ||
| ), | ||
| ec, | ||
| d, | ||
| ) | ||
| ).map(c => Some(F.delay(c.cancel()))) | ||
| }) | ||
| case _ => resourceNeverTimeoutException | ||
| } | ||
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| private def runRequest( | ||
| conn: A, | ||
| req: Request[F], | ||
| timeout: F[TimeoutException], | ||
| ): F[Resource[F, Response[F]]] = | ||
| conn | ||
| .runRequest(req, timeout) | ||
| .race(timeout.flatMap(F.raiseError[Resource[F, Response[F]]](_))) | ||
| .map(_.merge) | ||
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| private val resourceNeverTimeoutException = Resource.pure[F, F[TimeoutException]](F.never) | ||
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| } |
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