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62
...der/src/main/scala/com/snowplowanalytics/snowplow/rdbloader/dsl/RetryingTransaction.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,62 @@ | ||
| /* | ||
| * Copyright (c) 2012-2023 Snowplow Analytics Ltd. All rights reserved. | ||
| * | ||
| * This program is licensed to you under the Apache License Version 2.0, | ||
| * and you may not use this file except in compliance with the Apache License Version 2.0. | ||
| * You may obtain a copy of the Apache License Version 2.0 at http://www.apache.org/licenses/LICENSE-2.0. | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, | ||
| * software distributed under the Apache License Version 2.0 is distributed on an | ||
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the Apache License Version 2.0 for the specific language governing permissions and limitations there under. | ||
| */ | ||
| package com.snowplowanalytics.snowplow.rdbloader.dsl | ||
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| import cats.{MonadThrow, ~>} | ||
| import cats.implicits._ | ||
| import retry._ | ||
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| import com.snowplowanalytics.snowplow.rdbloader.config.Config | ||
| import com.snowplowanalytics.snowplow.rdbloader.loading.Retry | ||
| import com.snowplowanalytics.snowplow.rdbloader.loading.Retry._ | ||
| import com.snowplowanalytics.snowplow.rdbloader.transactors.RetryingTransactor | ||
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| object RetryingTransaction { | ||
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| /** A Transaction-handler that retries the io if there is an exception */ | ||
| def wrap[F[_]: MonadThrow: Logging: Sleep, C[_]]( | ||
| retries: Config.Retries, | ||
| inner: Transaction[F, C] | ||
| ): Transaction[F, C] = { | ||
| val policy = Retry.getRetryPolicy[F](retries) | ||
| new Transaction[F, C] { | ||
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| def transact[A](io: C[A]): F[A] = | ||
| withErrorAdaption(policy) { | ||
| inner.transact(io) | ||
| } | ||
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| def run[A](io: C[A]): F[A] = | ||
| withErrorAdaption(policy) { | ||
| inner.run(io) | ||
| } | ||
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| def arrowBack: F ~> C = inner.arrowBack | ||
| } | ||
| } | ||
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| private def withErrorAdaption[F[_]: MonadThrow: Sleep: Logging, A](policy: RetryPolicy[F])(io: F[A]): F[A] = | ||
| retryingOnSomeErrors(policy, isWorthRetry.andThen(_.pure[F]), onError[F](_, _))(io) | ||
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| private val isWorthRetry: Throwable => Boolean = { | ||
| case _: RetryingTransactor.ExceededRetriesException => | ||
| // The relevant retry policy has already been applied and exceeded | ||
| false | ||
| case e => | ||
| Retry.isWorth(e) | ||
| } | ||
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| private def onError[F[_]: Logging](t: Throwable, d: RetryDetails): F[Unit] = | ||
| Logging[F].error(t)(show"Error executing transaction. $d") | ||
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| } |
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