Alpakka 和 Akka 版本兼容性问题

Posted 2023-03-24

【中文标题】Alpakka 和 Akka 版本兼容性问题

【英文标题】：Alpakka and Akka Version Compatibility Issue

【发布时间】：2021-08-02 09:27:31

【问题描述】：

当我尝试 sbt 构建我的项目时，项目构建失败并出现“提取产品结构失败”错误。我怀疑与我用于 Alpakka 和 Akka 的版本有关。

这是我的 build.sbt 文件：

lazy val akkaHttpVersion = "10.2.4" // "10.1.11"
lazy val akkaVersion    =  "2.6.14" // "2.5.31"
val JacksonVersion = "2.10.5.1"

lazy val root = (project in file(".")).
  settings(
    inThisBuild(List(
      organization    := "com.example",
      scalaVersion    := "2.13.4"//"2.12.11"
    )),
    name := "XYZ",
    libraryDependencies ++= Seq(
      "org.orekit" % "orekit" % "10.3",
      "com.typesafe.akka" %% "akka-http"                % akkaHttpVersion,
      "com.typesafe.akka" %% "akka-http-spray-json"     % akkaHttpVersion,
      "com.typesafe.akka" %% "akka-actor-typed"         % akkaVersion,
      "com.typesafe.akka" %% "akka-stream"              % akkaVersion,
      "ch.qos.logback"    % "logback-classic"           % "1.2.3",
      "com.typesafe.akka" %% "akka-http-testkit"        % akkaHttpVersion % Test,
      "com.typesafe.akka" %% "akka-actor-testkit-typed" % akkaVersion     % Test,
      "org.scalatest"     %% "scalatest"                % "3.1.4"         % Test,
      "org.ehcache" % "ehcache" % "3.1.3",
      "org.apache.httpcomponents" % "httpclient" % "4.5.13",
      "org.scala-lang.modules" %% "scala-parallel-collections" % "0.2.0",
      "org.apache.sling" % "sling-maven-plugin" % "2.4.2",
      "com.fasterxml.jackson.module" % "jackson-module-scala" % "2.0.2",
      "com.fasterxml.jackson.core" % "jackson-databind" % JacksonVersion,
      "com.typesafe.akka" %% "akka-stream-kafka" % "2.0.7",
      "com.lightbend.akka" %% "akka-stream-alpakka-reference" % "2.0.2"
    )
  )

当我在库末尾删除 alpakka 依赖项时，错误消失了，但由于缺少 alpakka 依赖项，我无法构建项目。

最终，我只是想实现这个：https://akka.io/alpakka-samples/http-csv-to-kafka/step4.html

Gael: Here is the image of the error message from Intellij

在运行sbt clean compile 时，我得到以下错误堆栈：

[warn]
[warn]  Note: Unresolved dependencies path:
[error] sbt.librarymanagement.ResolveException: Error downloading com.lightbend.akka:akka-stream-alpakka-reference_2.13:2.0.2
[error]   Not found
[error]   Not found
[error]   not found: C:\Users\ihussein\.ivy2\localcom.lightbend.akka\akka-stream-alpakka-reference_2.13\2.0.2\ivys\ivy.xml
[error]   not found: https://repo1.maven.org/maven2/com/lightbend/akka/akka-stream-alpakka-reference_2.13/2.0.2/akka-stream-alpakka-reference_2.13-2.0.2.pom
[error]         at lmcoursier.CoursierDependencyResolution.unresolvedWarningOrThrow(CoursierDependencyResolution.scala:258)
[error]         at lmcoursier.CoursierDependencyResolution.$anonfun$update$38(CoursierDependencyResolution.scala:227)
[error]         at scala.util.Either$LeftProjection.map(Either.scala:573)
[error]         at lmcoursier.CoursierDependencyResolution.update(CoursierDependencyResolution.scala:227)
[error]         at sbt.librarymanagement.DependencyResolution.update(DependencyResolution.scala:60)
[error]         at sbt.internal.LibraryManagement$.resolve$1(LibraryManagement.scala:53)
[error]         at sbt.internal.LibraryManagement$.$anonfun$cachedUpdate$12(LibraryManagement.scala:103)
[error]         at sbt.util.Tracked$.$anonfun$lastOutput$1(Tracked.scala:73)
[error]         at sbt.internal.LibraryManagement$.$anonfun$cachedUpdate$20(LibraryManagement.scala:116)
[error]         at scala.util.control.Exception$Catch.apply(Exception.scala:228)
[error]         at sbt.internal.LibraryManagement$.$anonfun$cachedUpdate$11(LibraryManagement.scala:116)
[error]         at sbt.internal.LibraryManagement$.$anonfun$cachedUpdate$11$adapted(LibraryManagement.scala:97)
[error]         at sbt.util.Tracked$.$anonfun$inputChangedW$1(Tracked.scala:219)
[error]         at sbt.internal.LibraryManagement$.cachedUpdate(LibraryManagement.scala:130)
[error]         at sbt.Classpaths$.$anonfun$updateTask0$5(Defaults.scala:3486)
[error]         at scala.Function1.$anonfun$compose$1(Function1.scala:49)
[error]         at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:62)
[error]         at sbt.std.Transform$$anon$4.work(Transform.scala:68)
[error]         at sbt.Execute.$anonfun$submit$2(Execute.scala:282)
[error]         at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:23)
[error]         at sbt.Execute.work(Execute.scala:291)
[error]         at sbt.Execute.$anonfun$submit$1(Execute.scala:282)
[error]         at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:265)
[error]         at sbt.CompletionService$$anon$2.call(CompletionService.scala:64)
[error]         at java.util.concurrent.FutureTask.run(Unknown Source)
[error]         at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
[error]         at java.util.concurrent.FutureTask.run(Unknown Source)
[error]         at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
[error]         at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
[error]         at java.lang.Thread.run(Unknown Source)
[error] (update) sbt.librarymanagement.ResolveException: Error downloading com.lightbend.akka:akka-stream-alpakka-reference_2.13:2.0.2
[error]   Not found
[error]   Not found
[error]   not found: C:\Users\ihussein\.ivy2\localcom.lightbend.akka\akka-stream-alpakka-reference_2.13\2.0.2\ivys\ivy.xml
[error]   not found: https://repo1.maven.org/maven2/com/lightbend/akka/akka-stream-alpakka-reference_2.13/2.0.2/akka-stream-alpakka-reference_2.13-2.0.2.pom

【问题讨论】：

您的build.sbt 对我来说非常好用。您还有其他错误消息吗？

@GaëlJ 我在 Intellij 中添加了一个指向错误消息图像的链接。如果我删除对 alpakka 的依赖，这个错误就会消失，但是因为库不再存在，代码中对其对象的引用会导致构建错误。谢谢！

在 IntelliJ Idea 中，您可以单击屏幕截图中显示的不同行，右侧应显示更多详细信息。您也可以暂时摆脱 IntelliJ 并在 shell 中运行 sbt clean compile 以检查它是否更好。

再次感谢@GaëlJ。 Intellij 错误报告中未显示任何内容。我在我的帖子中添加了来自sbt clean compile 命令的响应。

akka-stream-alpakka-reference 似乎不存在，所以我很好奇它为什么存在（它不在项目的 github 版本中）

【参考方案1】：

看来我需要使用"com.lightbend.akka" %% "akka-stream-alpakka-csv" % "2.0.2" 而不是 "com.lightbend.akka" %% "akka-stream-alpakka-reference" % "2.0.2"。