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package cbt
import java.io._
import java.util._
import scala.collection.JavaConverters._
final case class Stage1ArgsParser(_args: Seq[String]) {
/**
* Raw parameters including their `-D` flag.
**/
val propsRaw: Seq[String] = _args.toVector.filter(_.startsWith("-D"))
/**
* All arguments that weren't `-D` property declarations.
**/
val args: Seq[String] = _args.toVector diff propsRaw
/**
* Parsed properties, as a map of keys to values.
**/
val props = propsRaw
.map(_.drop(2).split("=")).map({
case Array(key, value) =>
key -> value
}).toMap ++ System.getProperties.asScala
val enabledLoggers = props.get("log")
val tools = _args contains "tools"
}
abstract class Stage2Base{
def run( context: Stage2Args ): ExitCode
}
class Stage2Args(
val cwd: File,
val args: Seq[String],
val stage2LastModified: Long,
val cache: File,
val cbtHome: File,
val compatibilityTarget: File,
val stage2sourceFiles: Seq[File],
val loop: Boolean
)(
implicit val transientCache: java.util.Map[AnyRef,AnyRef], val classLoaderCache: ClassLoaderCache, val logger: Logger
){
val persistentCache = classLoaderCache.hashMap
}
object Stage1{
protected def newerThan( a: File, b: File ) ={
a.lastModified > b.lastModified
}
def getBuild( _context: java.lang.Object, buildStage1: BuildStage1Result ) = {
val context = _context.asInstanceOf[Context]
val logger = new Logger( context.enabledLoggers, buildStage1.start )
val (_, cbtLastModified, classLoader) = buildStage2(
buildStage1,
context.cbtHome,
context.cache,
context.cwd,
context.loop
)(context.transientCache, new ClassLoaderCache( context.persistentCache ), logger)
classLoader
.loadClass("cbt.Stage2")
.getMethod( "getBuild", classOf[Context] )
.invoke(
null,
context.copy(
cbtLastModified = Math.max( context.cbtLastModified, cbtLastModified )
)
)
}
def buildStage2(
buildStage1: BuildStage1Result, cbtHome: File, cache: File, cwd: File, loop: Boolean
)(
implicit transientCache: java.util.Map[AnyRef,AnyRef], classLoaderCache: ClassLoaderCache, logger: Logger
): (Seq[File], Long, ClassLoader) = {
import buildStage1._
val lib = new Stage1Lib(logger)
import lib._
val paths = CbtPaths(cbtHome, cache)
import paths._
val stage2sourceFiles = (
stage2.listFiles
++ (stage2 / "plugins").listOrFail
++ (cbtHome / "libraries" / "eval").listOrFail
++ (cbtHome / "libraries" / "process").listOrFail
).filter(_.isFile).filter(_.toString.endsWith(".scala"))
val cls = this.getClass.getClassLoader.loadClass("cbt.NailgunLauncher")
def _cbtDependencies = new CbtDependencies(
(stage2Target++".last-success").lastModified,
mavenCache, nailgunTarget, stage1Target, stage2Target,
new File(buildStage1.compatibilityClasspath)
)
logger.stage1("Compiling stage2 if necessary")
if(loop)
lib.addLoopFiles( cwd, stage2sourceFiles.toSet )
val Some( stage2LastModified ) = compile(
buildStage1.stage1LastModified,
stage2sourceFiles, stage2Target, stage2StatusFile,
_cbtDependencies.stage2Dependency.dependencies,
mavenCache,
Seq("-deprecation","-feature","-unchecked"),
zincVersion = constants.zincVersion, scalaVersion = constants.scalaVersion
)
def cbtDependencies = new CbtDependencies(
(stage2Target++".last-success").lastModified,
mavenCache, nailgunTarget, stage1Target, stage2Target,
new File(buildStage1.compatibilityClasspath)
)
logger.stage1(s"calling CbtDependency.classLoader")
assert(
buildStage1.compatibilityClasspath === cbtDependencies.compatibilityDependency.classpath.string,
"compatibility classpath different from NailgunLauncher"
)
assert(
buildStage1.stage1Classpath === cbtDependencies.stage1Dependency.classpath.string,
"stage1 classpath different from NailgunLauncher"
)
assert(
classLoaderCache.containsKey( cbtDependencies.compatibilityDependency.classpath.string, cbtDependencies.compatibilityDependency.lastModified ),
"cbt unchanged, expected compatibility classloader to be cached"
)
assert(
classLoaderCache.containsKey( cbtDependencies.stage1Dependency.classpath.string, cbtDependencies.stage1Dependency.lastModified ),
"cbt unchanged, expected stage1 classloader to be cached"
)
val stage2ClassLoader = cbtDependencies.stage2Dependency.classLoader
{
// a few classloader sanity checks
val compatibilityClassLoader =
cbtDependencies.compatibilityDependency.classLoader
assert(
classOf[BuildInterface].getClassLoader == compatibilityClassLoader,
classOf[BuildInterface].getClassLoader.toString ++ "\n\nis not the same as\n\n" ++ compatibilityClassLoader.toString
)
//-------------
val stage1ClassLoader =
cbtDependencies.stage1Dependency.classLoader
assert(
classOf[Stage1ArgsParser].getClassLoader == stage1ClassLoader,
classOf[Stage1ArgsParser].getClassLoader.toString ++ "\n\nis not the same as\n\n" ++ stage1ClassLoader.toString
)
//-------------
assert(
Stage0Lib.get(stage2ClassLoader.getParent,"parents").asInstanceOf[Seq[ClassLoader]].contains(stage1ClassLoader),
stage1ClassLoader.toString ++ "\n\nis not contained in parents of\n\n" ++ stage2ClassLoader.toString
)
}
( stage2sourceFiles, stage2LastModified, stage2ClassLoader )
}
def run(
_args: Array[String],
cache: File,
cbtHome: File,
loop: Boolean,
buildStage1: BuildStage1Result,
persistentCache: java.util.Map[AnyRef,AnyRef]
): Int = {
val args = Stage1ArgsParser(_args.toVector.drop(1))
implicit val logger = new Logger(args.enabledLoggers, buildStage1.start)
logger.stage1(s"Stage1 start")
implicit val transientCache: java.util.Map[AnyRef,AnyRef] = new java.util.HashMap
implicit val classLoaderCache = new ClassLoaderCache( persistentCache )
val cwd = new File( args.args(0) )
val (stage2sourceFiles, stage2LastModified, classLoader) = buildStage2( buildStage1, cbtHome, cache, cwd, loop )
val stage2Args = new Stage2Args(
cwd,
args.args.drop(2).toVector,
// launcher changes cause entire nailgun restart, so no need for them here
stage2LastModified = stage2LastModified,
cache,
cbtHome,
new File(buildStage1.compatibilityClasspath),
stage2sourceFiles,
loop
)
logger.stage1(s"Run Stage2")
val exitCode = (
classLoader
.loadClass(
if(args.tools) "cbt.ToolsStage2" else "cbt.Stage2"
)
.getMethod( "run", classOf[Stage2Args] )
.invoke(
null,
stage2Args
) match {
case code: ExitCode => code
case _ => ExitCode.Success
}
).integer
logger.stage1(s"Stage1 end with exit code " + exitCode)
return exitCode;
}
}
|
