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Launch.scala
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Launch.scala
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/* sbt -- Simple Build Tool
* Copyright 2008, 2009, 2010, 2011 Mark Harrah
*/
package xsbt.boot
import Pre._
import BootConfiguration.{CompilerModuleName, LibraryModuleName}
import java.io.File
import java.net.{URL, URLClassLoader}
import java.util.concurrent.Callable
import scala.collection.immutable.List
import scala.annotation.tailrec
object Launch
{
def apply(arguments: List[String]): Option[Int] = apply( (new File("")).getAbsoluteFile , arguments )
def apply(currentDirectory: File, arguments: List[String]): Option[Int] =
Configuration.find(arguments, currentDirectory) match { case (configLocation, newArguments) => configured(currentDirectory, configLocation, newArguments) }
def configured(currentDirectory: File, configLocation: URL, arguments: List[String]): Option[Int] =
{
val config = Configuration.parse(configLocation, currentDirectory)
Find(config, currentDirectory) match { case (resolved, baseDirectory) => parsed(baseDirectory, resolved, arguments) }
}
def parsed(currentDirectory: File, parsed: LaunchConfiguration, arguments: List[String]): Option[Int] =
{
val propertiesFile = parsed.boot.properties
import parsed.boot.{enableQuick, promptCreate, promptFill}
if(isNonEmpty(promptCreate) && !propertiesFile.exists)
Initialize.create(propertiesFile, promptCreate, enableQuick, parsed.appProperties)
else if(promptFill)
Initialize.fill(propertiesFile, parsed.appProperties)
initialized(currentDirectory, parsed, arguments)
}
def initialized(currentDirectory: File, parsed: LaunchConfiguration, arguments: List[String]): Option[Int] =
{
parsed.logging.debug("Parsed configuration: " + parsed)
val resolved = ResolveValues(parsed)
resolved.logging.debug("Resolved configuration: " + resolved)
explicit(currentDirectory, resolved, arguments)
}
def explicit(currentDirectory: File, explicit: LaunchConfiguration, arguments: List[String]): Option[Int] =
launch( run(Launcher(explicit)) ) (
new RunConfiguration(explicit.getScalaVersion, explicit.app.toID, currentDirectory, arguments) )
def run(launcher: xsbti.Launcher)(config: RunConfiguration): xsbti.MainResult =
{
import config._
val appProvider: xsbti.AppProvider = launcher.app(app, orNull(scalaVersion)) // takes ~40 ms when no update is required
val appConfig: xsbti.AppConfiguration = new AppConfiguration(toArray(arguments), workingDirectory, appProvider)
val main = appProvider.newMain()
try { main.run(appConfig) }
catch { case e: xsbti.FullReload => if(e.clean) delete(launcher.bootDirectory); throw e }
}
private[this] def delete(f: File)
{
if(f.isDirectory)
{
val fs = f.listFiles()
if(fs ne null) fs foreach delete
}
if(f.exists) f.delete()
}
final def launch(run: RunConfiguration => xsbti.MainResult)(config: RunConfiguration): Option[Int] =
{
run(config) match
{
case e: xsbti.Exit => Some(e.code)
case c: xsbti.Continue => None
case r: xsbti.Reboot => launch(run)(new RunConfiguration(Option(r.scalaVersion), r.app, r.baseDirectory, r.arguments.toList))
case x => throw new BootException("Invalid main result: " + x + (if(x eq null) "" else " (class: " + x.getClass + ")"))
}
}
}
final class RunConfiguration(val scalaVersion: Option[String], val app: xsbti.ApplicationID, val workingDirectory: File, val arguments: List[String])
import BootConfiguration.{appDirectoryName, baseDirectoryName, extractScalaVersion, ScalaDirectoryName, TestLoadScalaClasses, ScalaOrg}
class Launch private[xsbt](val bootDirectory: File, val lockBoot: Boolean, val ivyOptions: IvyOptions) extends xsbti.Launcher
{
import ivyOptions.{checksums => checksumsList, classifiers, repositories}
bootDirectory.mkdirs
private val scalaProviders = new Cache[(String, String), String, xsbti.ScalaProvider]((x, y) => getScalaProvider(x._1, x._2, y))
def getScala(version: String): xsbti.ScalaProvider = getScala(version, "")
def getScala(version: String, reason: String): xsbti.ScalaProvider = getScala(version, reason, ScalaOrg)
def getScala(version: String, reason: String, scalaOrg: String) = scalaProviders((scalaOrg, version), reason)
def app(id: xsbti.ApplicationID, version: String): xsbti.AppProvider = app(id, Option(version))
def app(id: xsbti.ApplicationID, scalaVersion: Option[String]): xsbti.AppProvider =
getAppProvider(id, scalaVersion, false)
val bootLoader = new BootFilteredLoader(getClass.getClassLoader)
val topLoader = jnaLoader(bootLoader)
val updateLockFile = if(lockBoot) Some(new File(bootDirectory, "sbt.boot.lock")) else None
def globalLock: xsbti.GlobalLock = Locks
def ivyHome = orNull(ivyOptions.ivyHome)
def ivyRepositories = repositories.toArray
def checksums = checksumsList.toArray[String]
def jnaLoader(parent: ClassLoader): ClassLoader =
{
val id = AppID("net.java.dev.jna", "jna", "3.2.3", "", toArray(Nil), false, array())
val configuration = makeConfiguration(ScalaOrg, None)
val jnaHome = appDirectory(new File(bootDirectory, baseDirectoryName(ScalaOrg, None)), id)
val module = appModule(id, None, false, "jna")
def makeLoader(): ClassLoader = {
val urls = toURLs(wrapNull(jnaHome.listFiles(JarFilter)))
val loader = new URLClassLoader(urls, bootLoader)
checkLoader(loader, module, "com.sun.jna.Function" :: Nil, loader)
}
val existingLoader =
if(jnaHome.exists)
try Some(makeLoader()) catch { case e: Exception => None }
else
None
existingLoader getOrElse {
update(module, "")
makeLoader()
}
}
def checkLoader[T](loader: ClassLoader, module: ModuleDefinition, testClasses: Seq[String], ifValid: T): T =
{
val missing = getMissing(loader, testClasses)
if(missing.isEmpty)
ifValid
else
module.retrieveCorrupt(missing)
}
private[this] def makeConfiguration(scalaOrg: String, version: Option[String]): UpdateConfiguration =
new UpdateConfiguration(bootDirectory, ivyOptions.ivyHome, scalaOrg, version, repositories, checksumsList)
final def getAppProvider(id: xsbti.ApplicationID, explicitScalaVersion: Option[String], forceAppUpdate: Boolean): xsbti.AppProvider =
locked(new Callable[xsbti.AppProvider] { def call = getAppProvider0(id, explicitScalaVersion, forceAppUpdate) })
@tailrec private[this] final def getAppProvider0(id: xsbti.ApplicationID, explicitScalaVersion: Option[String], forceAppUpdate: Boolean): xsbti.AppProvider =
{
val app = appModule(id, explicitScalaVersion, true, "app")
val baseDirs = (base: File) => appBaseDirs(base, id)
def retrieve() = {
val sv = update(app, "")
val scalaVersion = strictOr(explicitScalaVersion, sv)
new RetrievedModule(true, app, sv, baseDirs(scalaHome(ScalaOrg, scalaVersion)))
}
val retrievedApp =
if(forceAppUpdate)
retrieve()
else
existing(app, ScalaOrg, explicitScalaVersion, baseDirs) getOrElse retrieve()
val scalaVersion = getOrError(strictOr(explicitScalaVersion, retrievedApp.detectedScalaVersion), "No Scala version specified or detected")
val scalaProvider = getScala(scalaVersion, "(for " + id.name + ")")
val (missing, appProvider) = checkedAppProvider(id, retrievedApp, scalaProvider)
if(missing.isEmpty)
appProvider
else if(retrievedApp.fresh)
app.retrieveCorrupt(missing)
else
getAppProvider0(id, explicitScalaVersion, true)
}
def scalaHome(scalaOrg: String, scalaVersion: Option[String]): File = new File(bootDirectory, baseDirectoryName(scalaOrg, scalaVersion))
def appHome(id: xsbti.ApplicationID, scalaVersion: Option[String]): File = appDirectory(scalaHome(ScalaOrg, scalaVersion), id)
def checkedAppProvider(id: xsbti.ApplicationID, module: RetrievedModule, scalaProvider: xsbti.ScalaProvider): (Iterable[String], xsbti.AppProvider) =
{
val p = appProvider(id, module, scalaProvider, appHome(id, Some(scalaProvider.version)))
val missing = getMissing(p.loader, id.mainClass :: Nil)
(missing, p)
}
private[this] def locked[T](c: Callable[T]): T = Locks(orNull(updateLockFile), c)
def getScalaProvider(scalaOrg: String, scalaVersion: String, reason: String): xsbti.ScalaProvider =
locked(new Callable[xsbti.ScalaProvider] { def call = getScalaProvider0(scalaOrg, scalaVersion, reason) })
private[this] final def getScalaProvider0(scalaOrg: String, scalaVersion: String, reason: String) =
{
val scalaM = scalaModule(scalaOrg, scalaVersion)
val (scalaHome, lib) = scalaDirs(scalaM, scalaOrg, scalaVersion)
val baseDirs = lib :: Nil
def provider(retrieved: RetrievedModule): xsbti.ScalaProvider = {
val p = scalaProvider(scalaVersion, retrieved, topLoader, lib)
checkLoader(p.loader, retrieved.definition, TestLoadScalaClasses, p)
}
existing(scalaM, scalaOrg, Some(scalaVersion), _ => baseDirs) flatMap { mod =>
try Some(provider(mod))
catch { case e: Exception => None }
} getOrElse {
val scalaVersion = update(scalaM, reason)
provider( new RetrievedModule(true, scalaM, scalaVersion, baseDirs) )
}
}
def existing(module: ModuleDefinition, scalaOrg: String, explicitScalaVersion: Option[String], baseDirs: File => List[File]): Option[RetrievedModule] =
{
val filter = new java.io.FileFilter {
val explicitName = explicitScalaVersion.map(sv => baseDirectoryName(scalaOrg, Some(sv)))
def accept(file: File) = file.isDirectory && explicitName.forall(_ == file.getName)
}
val retrieved = wrapNull(bootDirectory.listFiles(filter)) flatMap { scalaDir =>
val appDir = directory(scalaDir, module.target)
if(appDir.exists)
new RetrievedModule(false, module, extractScalaVersion(scalaDir), baseDirs(scalaDir)) :: Nil
else
Nil
}
retrieved.headOption
}
def directory(scalaDir: File, target: UpdateTarget): File = target match {
case _: UpdateScala => scalaDir
case ua: UpdateApp => appDirectory(scalaDir, ua.id.toID)
}
def appBaseDirs(scalaHome: File, id: xsbti.ApplicationID): List[File] =
{
val appHome = appDirectory(scalaHome, id)
val components = componentProvider(appHome)
appHome :: id.mainComponents.map(components.componentLocation).toList
}
def appDirectory(base: File, id: xsbti.ApplicationID): File =
new File(base, appDirectoryName(id, File.separator))
def scalaDirs(module: ModuleDefinition, scalaOrg: String, scalaVersion: String): (File, File) =
{
val scalaHome = new File(bootDirectory, baseDirectoryName(scalaOrg, Some(scalaVersion)))
val libDirectory = new File(scalaHome, ScalaDirectoryName)
(scalaHome, libDirectory)
}
def appProvider(appID: xsbti.ApplicationID, app: RetrievedModule, scalaProvider0: xsbti.ScalaProvider, appHome: File): xsbti.AppProvider = new xsbti.AppProvider
{
val scalaProvider = scalaProvider0
val id = appID
def mainClasspath = app.fullClasspath
lazy val loader = app.createLoader(scalaProvider.loader)
lazy val mainClass: Class[T] forSome { type T <: xsbti.AppMain } =
{
val c = Class.forName(id.mainClass, true, loader)
c.asSubclass(classOf[xsbti.AppMain])
}
def newMain(): xsbti.AppMain = mainClass.newInstance
lazy val components = componentProvider(appHome)
}
def componentProvider(appHome: File) = new ComponentProvider(appHome, lockBoot)
def scalaProvider(scalaVersion: String, module: RetrievedModule, parentLoader: ClassLoader, scalaLibDir: File): xsbti.ScalaProvider = new xsbti.ScalaProvider
{
def launcher = Launch.this
def version = scalaVersion
lazy val loader = module.createLoader(parentLoader)
def compilerJar = new File(scalaLibDir, CompilerModuleName + ".jar")
def libraryJar = new File(scalaLibDir, LibraryModuleName + ".jar")
def jars = module.fullClasspath
def app(id: xsbti.ApplicationID) = Launch.this.app(id, Some(scalaVersion))
}
def appModule(id: xsbti.ApplicationID, scalaVersion: Option[String], getClassifiers: Boolean, tpe: String): ModuleDefinition = new ModuleDefinition(
configuration = makeConfiguration(ScalaOrg, scalaVersion),
target = new UpdateApp(Application(id), if(getClassifiers) Value.get(classifiers.app) else Nil, tpe),
failLabel = id.name + " " + id.version,
extraClasspath = id.classpathExtra
)
def scalaModule(org: String, version: String): ModuleDefinition = new ModuleDefinition(
configuration = makeConfiguration(org, Some(version)),
target = new UpdateScala(Value.get(classifiers.forScala)),
failLabel = "Scala " + version,
extraClasspath = array()
)
def update(mm: ModuleDefinition, reason: String): Option[String] =
{
val result = ( new Update(mm.configuration) )(mm.target, reason)
if(result.success) result.scalaVersion else mm.retrieveFailed
}
}
object Launcher
{
def apply(bootDirectory: File, repositories: List[xsbti.Repository]): xsbti.Launcher =
apply(bootDirectory, IvyOptions(None, Classifiers(Nil, Nil), repositories, BootConfiguration.DefaultChecksums))
def apply(bootDirectory: File, ivyOptions: IvyOptions): xsbti.Launcher =
apply(bootDirectory, ivyOptions, GetLocks.find)
def apply(bootDirectory: File, ivyOptions: IvyOptions, locks: xsbti.GlobalLock): xsbti.Launcher =
new Launch(bootDirectory, true, ivyOptions) {
override def globalLock = locks
}
def apply(explicit: LaunchConfiguration): xsbti.Launcher =
new Launch(explicit.boot.directory, explicit.boot.lock, explicit.ivyConfiguration)
def defaultAppProvider(baseDirectory: File): xsbti.AppProvider = getAppProvider(baseDirectory, Configuration.configurationOnClasspath)
def getAppProvider(baseDirectory: File, configLocation: URL): xsbti.AppProvider =
{
val parsed = ResolvePaths(Configuration.parse(configLocation, baseDirectory), baseDirectory)
Initialize.process(parsed.boot.properties, parsed.appProperties, Initialize.selectQuick)
val config = ResolveValues(parsed)
val launcher = apply(config)
launcher.app(config.app.toID, orNull(config.getScalaVersion))
}
}
class ComponentProvider(baseDirectory: File, lockBoot: Boolean) extends xsbti.ComponentProvider
{
def componentLocation(id: String): File = new File(baseDirectory, id)
def component(id: String) = wrapNull(componentLocation(id).listFiles).filter(_.isFile)
def defineComponent(id: String, files: Array[File]) =
{
val location = componentLocation(id)
if(location.exists)
throw new BootException("Cannot redefine component. ID: " + id + ", files: " + files.mkString(","))
else
Copy(files.toList, location)
}
def addToComponent(id: String, files: Array[File]): Boolean =
Copy(files.toList, componentLocation(id))
def lockFile = if(lockBoot) ComponentProvider.lockFile(baseDirectory) else null // null for the Java interface
}
object ComponentProvider
{
def lockFile(baseDirectory: File) =
{
baseDirectory.mkdirs()
new File(baseDirectory, "sbt.components.lock")
}
}