scala - 如何将我的应用程序打包为多个档案?
问题描述
我有一个应用程序,我想通过定义组件将它作为一组 ZIP 或 RPM(甚至是胖 JAR)档案交付。
例如,我想要一个任务,它为我的应用程序构建一个包含所有已构建 jar 的 ZIP 存档,以及另一个包含所有依赖项的存档。
怎么做?
解决方案
使用sbt-1.2
and sbt-native-packager-1.x
,您可以实现这一点。
在多项目构建中,sbt-native-packager
添加一个任务,Universal / packageBin
它为您的应用程序构建一个 ZIP 存档,并使用一个很好的 shell 脚本来定义其类路径。它就像一个魅力:
// in your (sub)project definition (a .sbt file, anyone)
lazy val MySubProject1 = (project in file("MySubProject1"))
.enablePlugins(JavaAppPackaging)
这使您可以:
sbt:MyProject> project MySubProject1
sbt:MySubProject1> universal:packageBin
[...]
adding: lib/
adding: lib/MySubProject2-0.1.0.jar
adding: lib/MySubProject1-0.1.0.jar
adding: lib/org.apache.kafka.kafka_2.11-0.10.0.1.jar
[...]
adding: bin/
adding: bin/MySubProject1
adding: bin/MySubProject1.bat
[success] [...]
^D
$ unzip -l target/universal/MySubProject1.zip # list archive content :)
[...]
好的,现在我们要输出两个ZIP 档案:一个用于您的jars(sbt 构建的),一个用于他们的jars(sbt 下载的)。这并不容易,但可以实现。
为了组织事物,我们将在 scala 文件中定义一些代码。假设以下项目层次结构:
MyProject |
├── build.sbt | Define all that is not defined in modules.sbt
├── modules.sbt | Defile all (sub)projects
├── project/ |
│ ├── Settings.scala | Define settings to apply to (sub)projects
│ └── Deps.scala | Define dependencies
├── MySubProject1/ | This is the subproject you will package
│ └── src/ |
├── ... | Some of those subprojects are dependencies to MuSubProject1
└── MySubProjectn/ |
└── src/ |
modules.sbt
:将我们的打包设置应用到 MySubProject1
lazy val MySubProject1 = (project in file("MySubProject1"))
.settings(
name := "AwesomeApp",
Settings.Common ++ Settings.Package, // this is here (Settings.Package) that magic operates
libraryDependencies ++= Deps.Spark,
)
.dependsOn(MySubProject2)
.enablePlugins(JavaAppPackaging) // This is still needed
project/Settings.scala
:定义打包所需的设置
从一个简单的 scala 对象,我们将扩展我们的打包策略
import sbt._
import Keys._
// additional imports (0/)
object Settings {
lazy val Common = Seq(
version := "0.1.0",
scalaVersion := "2.11.8",
// other settings
)
// <packaging strategy> (1/, 2/ & 3/)
}
0/ 添加一些导入
import com.typesafe.sbt.SbtNativePackager.autoImport._
import com.typesafe.sbt.packager.universal.UniversalPlugin.autoImport._
import com.typesafe.sbt.packager.universal.Archives.makeNativeZip
1/ 每个目标存档添加一个配置
val Application = config("application")
val Dependencies = config("dependencies")
2/ 定义我们的分区(哪个文件在哪个配置中)
//! @brief Return the configuration this file is into.
private[this] def configOf(mapping: (File, String)): Configuration = mapping match {
case (file, _) =>
if (file.getPath() contains "/cache/") Dependencies // this depends on **your** context and should be improved
else Application
}
//! @brief Return a file filter for this configuration to apply with @c filter on a file mapping.
private[this] def filterOf(conf: Configuration): ((File, String)) => Boolean = {
mapping: (File, String) => configOf(mapping) == conf
}
3/ 为每个配置创建 ZIP 存档
//! @brief Define the task packageBin for this configuration.
private[this] def packageDefinition(conf: Configuration): Setting[Task[File]] = {
conf / packageBin := {
// TODO add JavaAppPackaging plugin to the project here, but how? See `thisProject.value.autoPlugins`?
val targets = (Universal / mappings).value filter filterOf(conf)
makeNativeZip(target.value, s"${packageName.value}-${conf.name}", targets, None, Nil)
}
}
/**
* @brief Add packaging configuration to a project.
*
* Apply with:
* @code
lazy val subproject = (project in file ("directory")).settings(
name := "MyAwesomeSubProject",
Settings.Package,
).enablePlugins(JavaAppPackaging)
* @endcode
*/
def Package = Seq(
maintainer := "YSC@example.com",
packageName := s"${name.value}",
packageDefinition(Application),
packageDefinition(Dependencies),
)
就是这个!您现在可以在子项目上应用application:packageBin
和以分别生成和。dependencies:packageBin
AwesomeApp-application.zip
AwesomeApp-dependencies.zip
享受!
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