代码之家 › 专栏 › 技术社区 › Cassie

用sbt组装构建多项目fat-jar

multi-project sbt-assembly sbt scala

1

Cassie · 技术社区 · 6 年前

我有多个项目的主模块称为根,消费者和生产者模块依赖于核心模块。核心模块包含与配置相关的类。我想为消费者和生产者构建两个独立的jar,其中包含使用sbt程序集的独立主类。但是,当我尝试像这样单独构建它们时 sbt consumer/assembly 或者完全通过跑步 sbt assembly 我得到这样一个错误,sbt无法编译整个项目:

[error] (consumer / update) java.lang.IllegalArgumentException: a module is not authorized to depend on itself: demotest#demotest_2.11;0.1
[error] (producer / update) java.lang.IllegalArgumentException: a module is not authorized to depend on itself: demotest#demotest_2.11;0.1

为了正确地打包jar,我应该在依赖项中更改什么?我应该分开运行还是一起运行?

lazy val overrides = Seq("com.fasterxml.jackson.core" % "jackson-core" % "2.9.5",
  "com.fasterxml.jackson.core" % "jackson-databind" % "2.9.5",
  "com.fasterxml.jackson.module" % "jackson-module-scala_2.11" % "2.9.5")

lazy val commonSettings = Seq(
  name := "DemoTest",
  version := "0.1",
  scalaVersion := "2.11.8",
  resolvers += "Spark Packages Repo" at "http://dl.bintray.com/spark-packages/maven",
  dependencyOverrides ++= overrides
)

lazy val assemblySettings = Seq(
  assemblyMergeStrategy in assembly := {
    case PathList("org","aopalliance", xs @ _*) => MergeStrategy.last
    case PathList("javax", "inject", xs @ _*) => MergeStrategy.last
    case PathList("javax", "servlet", xs @ _*) => MergeStrategy.last
    case PathList("javax", "activation", xs @ _*) => MergeStrategy.last
    case PathList("org", "apache", xs @ _*) => MergeStrategy.last
    case PathList("com", "google", xs @ _*) => MergeStrategy.last
    case PathList("com", "esotericsoftware", xs @ _*) => MergeStrategy.last
    case PathList("com", "codahale", xs @ _*) => MergeStrategy.last
    case PathList("com", "yammer", xs @ _*) => MergeStrategy.last
    case PathList("org", "slf4j", xs @ _*) => MergeStrategy.last
    case PathList("org", "neo4j", xs @ _*) => MergeStrategy.last
    case PathList("com", "typesafe", xs @ _*) => MergeStrategy.last
    case PathList("net", "jpountz", xs @ _*) => MergeStrategy.last
    case PathList("META-INF", xs @ _*) => MergeStrategy.discard
    case "about.html" => MergeStrategy.rename
    case "META-INF/ECLIPSEF.RSA" => MergeStrategy.last
    case "META-INF/mailcap" => MergeStrategy.last
    case "META-INF/mimetypes.default" => MergeStrategy.last
    case "plugin.properties" => MergeStrategy.last
    case "log4j.properties" => MergeStrategy.last
    case x =>
      val oldStrategy = (assemblyMergeStrategy in assembly).value
      oldStrategy(x)
  }
)

lazy val sparkVersion = "2.2.0"

lazy val commonDependencies = Seq(
  "org.apache.kafka" %% "kafka" % "1.1.0",
  "org.apache.spark" %% "spark-core" % sparkVersion % "provided",
  "org.apache.spark" %% "spark-sql" % sparkVersion,
  "org.apache.spark" %% "spark-streaming" % sparkVersion,
  "org.apache.spark" %% "spark-streaming-kafka-0-10" % sparkVersion,
  "neo4j-contrib" % "neo4j-spark-connector" % "2.1.0-M4",
  "com.typesafe" % "config" % "1.3.0",
  "org.neo4j.driver" % "neo4j-java-driver" % "1.5.1",
  "com.opencsv" % "opencsv" % "4.1",
  "com.databricks" %% "spark-csv" % "1.5.0",
  "com.github.tototoshi" %% "scala-csv" % "1.3.5",
  "org.elasticsearch" %% "elasticsearch-spark-20" % "6.2.4"
)

lazy val root = (project in file("."))
  .aggregate(consumer, producer)



lazy val core = (project in file("core"))
  .settings(
    commonSettings,
    libraryDependencies ++= commonDependencies
  )

lazy val consumer = (project in file("consumer"))
  .settings(
    commonSettings,
    assemblySettings,
    libraryDependencies ++= commonDependencies)
  .settings(
    mainClass in assembly := Some("consumer.SparkConsumer"),
    assemblyJarName in assembly := "demo_consumer.jar"
  ).dependsOn(core)

lazy val producer = (project in file("producer"))
  .settings(
    commonSettings,
    assemblySettings,
    libraryDependencies ++= commonDependencies
  ).settings(
  mainClass in assembly := Some("producer.KafkaCheckinsProducer"),
  assemblyJarName in assembly := "demo_producer.jar"
).dependsOn(core)

1 回复 | 直到 6 年前

1

Antot 6 年前

问题就在这一行:

lazy val commonSettings = Seq(
  name := "DemoTest",  // should not be defined at this level!
)

这个 name 应为根定义:

lazy val root = (project in file("."))
  .aggregate(core, producer, consumer)
  .settings(
    name := "demotest"
  )

子模块将以“core”、“producer”和“consumer”作为自己的名称,除非 名称 在其设置中不被重写。

请注意,在您的示例中 .aggregate 不包括 core ,但确实应该这样。