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RDB Loader: add discovery through SQS stream (close #234)
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117 changes: 117 additions & 0 deletions
117
...common/src/main/scala/com/snowplowanalytics/snowplow/rdbloader/common/LoaderMessage.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,117 @@ | ||
| /* | ||
| * Copyright (c) 2012-2020 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.common | ||
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| import java.time.Instant | ||
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| import cats.implicits._ | ||
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| import io.circe.{Encoder, DecodingFailure, Decoder, Json} | ||
| import io.circe.generic.semiauto._ | ||
| import io.circe.parser.parse | ||
| import io.circe.syntax._ | ||
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| import com.snowplowanalytics.iglu.core.{SchemaKey, SchemaVer, SelfDescribingData} | ||
| import com.snowplowanalytics.iglu.core.circe.implicits._ | ||
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| /** Common type of message RDB Loader can receive from Shredder or other apps */ | ||
| sealed trait LoaderMessage { | ||
| import LoaderMessage._ | ||
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| /** Convert to self-describing JSON */ | ||
| def selfDescribingData: SelfDescribingData[Json] = | ||
| this match { | ||
| case _: LoaderMessage.ShreddingComplete => | ||
| SelfDescribingData(LoaderMessage.ShreddingCompleteKey, (this: LoaderMessage).asJson) | ||
| } | ||
| } | ||
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| object LoaderMessage { | ||
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| val ShreddingCompleteKey: SchemaKey = | ||
| SchemaKey("com.snowplowanalytics.snowplow.storage.rdbloader", "shredding_complete", "jsonschema", SchemaVer.Full(1,0,0)) | ||
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| /** Data format for shredded data */ | ||
| sealed trait Format extends Product with Serializable | ||
| object Format { | ||
| final case object TSV extends Format | ||
| final case object JSON extends Format | ||
| // Another options can be Parquet and InAtomic for Snowflake-like structure | ||
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| implicit val loaderMessageFormatEncoder: Encoder[Format] = | ||
| Encoder.instance(_.toString.asJson) | ||
| implicit val loaderMessageFormatDecoder: Decoder[Format] = | ||
| Decoder.instance { c => c.as[String] match { | ||
| case Right("TSV") => Format.TSV.asRight | ||
| case Right("JSON") => Format.JSON.asRight | ||
| case Right(other) => DecodingFailure(s"$other is unexpected format", c.history).asLeft | ||
| case Left(error) => error.asLeft | ||
| } } | ||
| } | ||
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| /** | ||
| * Set of timestamps coming from shredder | ||
| * @param jobStarted time shred job has started processing the batch | ||
| * @param jobCompleted time shred job has finished processing the batch | ||
| * @param min earliest collector timestamp in the batch | ||
| * @param max latest collector timestamp in the batch | ||
| */ | ||
| final case class Timestamps(jobStarted: Instant, | ||
| jobCompleted: Instant, | ||
| min: Option[Instant], | ||
| max: Option[Instant]) | ||
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| final case class ShreddedType(schemaKey: SchemaKey, format: Format) | ||
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| final case class Processor(artifact: String, version: Semver) | ||
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| /** | ||
| * Message signalling that shredder has finished and data ready to be loaded | ||
| * @param base root of the shredded data | ||
| * @param types all shredded types found in the batch | ||
| * @param timestamps set of auxiliary timestamps known to shredder | ||
| * @param processor shredder application metadata | ||
| */ | ||
| final case class ShreddingComplete(base: S3.Folder, | ||
| types: List[ShreddedType], | ||
| timestamps: Timestamps, | ||
| processor: Processor) extends LoaderMessage | ||
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| /** Parse raw string into self-describing JSON with [[LoaderMessage]] */ | ||
| def fromString(s: String): Either[String, LoaderMessage] = | ||
| parse(s) | ||
| .leftMap(_.show) | ||
| .flatMap(json => SelfDescribingData.parse(json).leftMap(e => s"JSON message [${json.noSpaces}] is not self-describing, ${e.code}")) | ||
| .flatMap { | ||
| case SelfDescribingData(SchemaKey("com.snowplowanalytics.snowplow.storage.rdbloader", "shredding_complete", _, SchemaVer.Full(1, _, _)), data) => | ||
| data.as[ShreddingComplete].leftMap(e => s"Cannot decode valid ShreddingComplete payload from [${data.noSpaces}], ${e.show}") | ||
| } | ||
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| implicit val loaderMessageTimestampsEncoder: Encoder[Timestamps] = | ||
| deriveEncoder[Timestamps] | ||
| implicit val loaderMessageTimestampsDecoder: Decoder[Timestamps] = | ||
| deriveDecoder[Timestamps] | ||
| implicit val loaderMessageShreddedTypeEncoder: Encoder[ShreddedType] = | ||
| deriveEncoder[ShreddedType] | ||
| implicit val loaderMessageShreddedTypeDecoder: Decoder[ShreddedType] = | ||
| deriveDecoder[ShreddedType] | ||
| implicit val loaderMessageProcessorEncoder: Encoder[Processor] = | ||
| deriveEncoder[Processor] | ||
| implicit val loaderMessageProcessorDecoder: Decoder[Processor] = | ||
| deriveDecoder[Processor] | ||
| implicit val loaderMessageShreddingCompleteEncoder: Encoder[LoaderMessage] = | ||
| deriveEncoder[ShreddingComplete].contramap { case e: ShreddingComplete => e } | ||
| implicit val loaderMessageShreddingCompleteDecoder: Decoder[ShreddingComplete] = | ||
| deriveDecoder[ShreddingComplete] | ||
|
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| } |
28 changes: 28 additions & 0 deletions
28
modules/common/src/main/scala/com/snowplowanalytics/snowplow/rdbloader/common/Message.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,28 @@ | ||
| /* | ||
| * Copyright (c) 2012-2020 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.common | ||
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| import javax.jms.{TextMessage, Message => JMessage} | ||
| import cats.syntax.either._ | ||
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| import cats.effect.Sync | ||
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| case class Message[F[_], A](data: A, ack: F[Unit]) | ||
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| object Message { | ||
| implicit def messageDecoder[F[_]: Sync](message: JMessage): Either[Throwable, Message[F, String]] = { | ||
| val text = message.asInstanceOf[TextMessage].getText | ||
| val ack = Sync[F].delay(message.acknowledge()) | ||
| Message(text, ack).asRight | ||
| } | ||
| } |
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