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Environment.scala
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Environment.scala
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/*
* Copyright (c) 2020-2021 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.postgres.env
import scala.concurrent.ExecutionContext
import cats.effect.{Async, Blocker, ContextShift, Timer, ConcurrentEffect}
import doobie.hikari.HikariTransactor
import fs2.{Stream, Pipe}
import fs2.concurrent.SignallingRef
import com.snowplowanalytics.snowplow.badrows.BadRow
import com.snowplowanalytics.snowplow.postgres.streaming.{SinkPipe, StreamSink, DummyStreamSink}
import com.snowplowanalytics.snowplow.postgres.config.LoaderConfig
import com.snowplowanalytics.snowplow.postgres.config.LoaderConfig.Source
import com.snowplowanalytics.snowplow.postgres.env.kinesis.{KinesisSink, KinesisEnv}
import com.snowplowanalytics.snowplow.postgres.env.local.{LocalSink, LocalEnv}
import com.snowplowanalytics.snowplow.postgres.env.pubsub.{PubSubSink, PubSubEnv}
final case class Environment[F[_], A](
source: Stream[F, A],
badRowSink: StreamSink[F],
getPayload: A => F[Either[BadRow, String]],
checkpointer: Pipe[F, A, Unit],
sinkPipe: HikariTransactor[F] => SinkPipe[F],
halt: SignallingRef[F, Boolean]
)
object Environment {
def create[F[_]: ConcurrentEffect: ContextShift: Timer](config: LoaderConfig,
blocker: Blocker) =
for {
badSink <- config.output.bad match {
case LoaderConfig.StreamSink.Noop => DummyStreamSink.create
case c: LoaderConfig.StreamSink.Kinesis => KinesisSink.create(c, config.monitoring, config.backoffPolicy, blocker)
case c: LoaderConfig.StreamSink.PubSub => PubSubSink.create(c, config.backoffPolicy)
case c: LoaderConfig.StreamSink.Local => LocalSink.create(c, blocker)
}
env <- config.input match {
case c: Source.Kinesis => KinesisEnv.create[F](blocker, c, badSink, config.monitoring.metrics, config.purpose)
case c: Source.PubSub => PubSubEnv.create[F](blocker, c, badSink)
case c: Source.Local => LocalEnv.create[F](blocker, c, badSink)
}
} yield env
def streamSinkExists[F[_]: Async: ContextShift](config: LoaderConfig.StreamSink)(implicit ec: ExecutionContext): F[Boolean] =
config match {
case c: LoaderConfig.StreamSink.Kinesis => KinesisSink.streamExists(c)
case c: LoaderConfig.StreamSink.PubSub => PubSubSink.topicExists(c)
case _ => Async[F].pure(true)
}
}