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* first migration * temp fix in build.sbt * migrated pekko kafka * package folders adjusted for core module (main) * package folders adjusted for tests/test * package folders adjusted for tests/it * package folders adjusted for tests/main * package folders adjusted for testkit (main) * package folders adjusted for benchmarks (it) * package folders adjusted for benchmarks (main) * package folders adjusted for cluster-sharding (main) * package folders adjusted for testkit java classes * Some more akka import adjustments in scala classes * Some more akka import adjustments in java classes * - Finally, replaced akka word with org.apache.pekko everywhere in .scala files - Added temporary copy & paste class from alpakka (till migration completes) * Finally, replaced akka word with org.apache.pekko everywhere in .java files * adjusted logback as well * PR comments * SCM and contributor data adjusted * formatted files * fixed the documentation build * fixed pekko discovery check * Fixed another unit test * one more test fix * Renamed package names in logback * Fixed all unit tests (build should be green) * Renamed Alpakka... -> PekkoConnectors... * Renamed Alpakka... -> PekkoConnectors... * Removed unnecessary TODO * Removed dependency on lightbend stream-alpakka-csv * - Using package configuration mapping instead of default scaladoc.base_url configuration - Adjusted pekko extref links * All doc links in build.sbt are adjusted
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126 changes: 126 additions & 0 deletions
126
benchmarks/src/main/scala/org/apache/pekko/kafka/benchmarks/CsvFormatter.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,126 @@ | ||
| /* | ||
| * Copyright (C) 2014 - 2016 Softwaremill <https://softwaremill.com> | ||
| * Copyright (C) 2016 - 2020 Lightbend Inc. <https://www.lightbend.com> | ||
| */ | ||
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| package org.apache.pekko.kafka.benchmarks | ||
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| import org.apache.pekko.util.ByteString | ||
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| import java.nio.charset.{ Charset, StandardCharsets } | ||
| import scala.collection.immutable | ||
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| private[benchmarks] sealed trait CsvQuotingStyle | ||
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| object CsvQuotingStyle { | ||
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| /** Quote only fields requiring quotes */ | ||
| case object Required extends CsvQuotingStyle | ||
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| /** Quote all fields */ | ||
| case object Always extends CsvQuotingStyle | ||
| } | ||
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| // TODO: This needs to be deleted after migrating alpakka to pekko. | ||
| // This is just temporary base to see everything compiles and tests will pass without any issue | ||
| private[benchmarks] class CsvFormatter(delimiter: Char, | ||
| quoteChar: Char, | ||
| escapeChar: Char, | ||
| endOfLine: String, | ||
| quotingStyle: CsvQuotingStyle, | ||
| charset: Charset = StandardCharsets.UTF_8) { | ||
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| private[this] val charsetName = charset.name() | ||
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| private[this] val delimiterBs = ByteString(String.valueOf(delimiter), charsetName) | ||
| private[this] val quoteBs = ByteString(String.valueOf(quoteChar), charsetName) | ||
| private[this] val duplicatedQuote = ByteString(String.valueOf(Array(quoteChar, quoteChar)), charsetName) | ||
| private[this] val duplicatedEscape = ByteString(String.valueOf(Array(escapeChar, escapeChar)), charsetName) | ||
| private[this] val endOfLineBs = ByteString(endOfLine, charsetName) | ||
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| def toCsv(fields: immutable.Iterable[Any]): ByteString = | ||
| if (fields.nonEmpty) nonEmptyToCsv(fields) | ||
| else endOfLineBs | ||
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| private def nonEmptyToCsv(fields: immutable.Iterable[Any]) = { | ||
| val builder = ByteString.createBuilder | ||
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| def splitAndDuplicateQuotesAndEscapes(field: String, splitAt: Int) = { | ||
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| @inline def indexOfQuoteOrEscape(lastIndex: Int) = { | ||
| var index = lastIndex | ||
| var found = -1 | ||
| while (index < field.length && found == -1) { | ||
| val char = field(index) | ||
| if (char == quoteChar || char == escapeChar) found = index | ||
| index += 1 | ||
| } | ||
| found | ||
| } | ||
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| var lastIndex = 0 | ||
| var index = splitAt | ||
| while (index > -1) { | ||
| builder ++= ByteString.apply(field.substring(lastIndex, index), charsetName) | ||
| val char = field.charAt(index) | ||
| if (char == quoteChar) { | ||
| builder ++= duplicatedQuote | ||
| } else { | ||
| builder ++= duplicatedEscape | ||
| } | ||
| lastIndex = index + 1 | ||
| index = indexOfQuoteOrEscape(lastIndex) | ||
| } | ||
| if (lastIndex < field.length) { | ||
| builder ++= ByteString(field.substring(lastIndex), charsetName) | ||
| } | ||
| } | ||
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| def append(field: String) = { | ||
| val (quoteIt, splitAt) = requiresQuotesOrSplit(field) | ||
| if (quoteIt || quotingStyle == CsvQuotingStyle.Always) { | ||
| builder ++= quoteBs | ||
| if (splitAt != -1) { | ||
| splitAndDuplicateQuotesAndEscapes(field, splitAt) | ||
| } else { | ||
| builder ++= ByteString(field, charsetName) | ||
| } | ||
| builder ++= quoteBs | ||
| } else { | ||
| builder ++= ByteString(field, charsetName) | ||
| } | ||
| } | ||
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| val iterator = fields.iterator | ||
| var hasNext = iterator.hasNext | ||
| while (hasNext) { | ||
| val next = iterator.next() | ||
| if (next != null) { | ||
| append(next.toString) | ||
| } | ||
| hasNext = iterator.hasNext | ||
| if (hasNext) { | ||
| builder ++= delimiterBs | ||
| } | ||
| } | ||
| builder ++= endOfLineBs | ||
| builder.result() | ||
| } | ||
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| private def requiresQuotesOrSplit(field: String): (Boolean, Int) = { | ||
| var quotes = CsvQuotingStyle.Always == quotingStyle | ||
| var split = -1 | ||
| var index = 0 | ||
| while (index < field.length && !(quotes && split != -1)) { | ||
| val char = field(index) | ||
| if (char == `quoteChar` || char == `escapeChar`) { | ||
| quotes = true | ||
| split = index | ||
| } else if (char == '\r' || char == '\n' || char == `delimiter`) { | ||
| quotes = true | ||
| } | ||
| index += 1 | ||
| } | ||
| (quotes, split) | ||
| } | ||
| } |
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