sbt pom reader - sbt读取pom

sbt pom reader - sbt读取pom

Spark为了依赖项的统一管理用了sbt pom reader这个插件，sbt编译发布也是从pom里读GAV了。 我记得老版本sbt的依赖项是写在project/SparkBuild.scala里的。这个工具在java/scala项目内很有使用场景。

地址在：https://github.com/sbt/sbt-pom-reader

1.配置插件

在/app/hadoop/shengli/spark1.3/project/project/SparkPluginBuild.scala

import sbt._
import sbt.Keys._

/**
 * This plugin project is there to define new scala style rules for spark. This is
 * a plugin project so that this gets compiled first and is put on the classpath and
 * becomes available for scalastyle sbt plugin.
 */
object SparkPluginDef extends Build {
  lazy val root = Project("plugins", file(".")) dependsOn(sparkStyle, sbtPomReader)
  lazy val sparkStyle = Project("spark-style", file("spark-style"), settings = styleSettings)
  lazy val sbtPomReader = uri("https://github.com/ScrapCodes/sbt-pom-reader.git#ignore_artifact_id")

  // There is actually no need to publish this artifact.
  def styleSettings = Defaults.defaultSettings ++ Seq (
    name                 :=  "spark-style",
    organization         :=  "org.apache.spark",
    scalaVersion         :=  "2.10.4",
    scalacOptions        :=  Seq("-unchecked", "-deprecation"),
    libraryDependencies  ++= Dependencies.scalaStyle
  )

  object Dependencies {
    val scalaStyle = Seq("org.scalastyle" %% "scalastyle" % "0.4.0")
  }
}

2.自定义类继承PomBuild，配置project

使用ProjectRef
格式：

// This is a heuristic, assuming we‘re running sbt in the same directory as the build.
val buildLocation = (file(".").getAbsoluteFile.getParentFile)

// Here we define a reference to a subproject.  The string "subproject" refers to the artifact id of
// the subproject.
val subproject = ProjectRef(buildLoc, "subproject")

// Disable all scalac arguemnts when running the REPL.
scalacOptions in subproject in Compile in console := Seq.empty

在Spark中的使用

在SparkBuild.scala内

...
import sbt._
import com.typesafe.sbt.pom.{loadEffectivePom, PomBuild, SbtPomKeys}
...
private val buildLocation = file(".").getAbsoluteFile.getParentFile

  val allProjects@Seq(bagel, catalyst, core, graphx, hive, hiveThriftServer, mllib, repl,
    sql, networkCommon, networkShuffle, streaming, streamingFlumeSink, streamingFlume, streamingKafka,
    streamingMqtt, streamingTwitter, streamingZeromq) =
    Seq("bagel", "catalyst", "core", "graphx", "hive", "hive-thriftserver", "mllib", "repl",
      "sql", "network-common", "network-shuffle", "streaming", "streaming-flume-sink",
      "streaming-flume", "streaming-kafka", "streaming-mqtt", "streaming-twitter",
      "streaming-zeromq").map(ProjectRef(buildLocation, _))

  val optionallyEnabledProjects@Seq(yarn, yarnStable, java8Tests, sparkGangliaLgpl,
    sparkKinesisAsl) = Seq("yarn", "yarn-stable", "java8-tests", "ganglia-lgpl",
    "kinesis-asl").map(ProjectRef(buildLocation, _))

  val assemblyProjects@Seq(assembly, examples, networkYarn, streamingKafkaAssembly) =
    Seq("assembly", "examples", "network-yarn", "streaming-kafka-assembly")
      .map(ProjectRef(buildLocation, _))

...
object SparkBuild extends PomBuild {
...

原创文章，转载请注明出自：http://blog.csdn.net/oopsoom/article/details/45148381