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import sbt._
import Build._
import Keys._
import Project.Initialize
import scala.collection.{ mutable, immutable }
import scala.collection.parallel.CompositeThrowable
/** Helpers to resolve SHA artifacts from typesafe repo. */
object ShaResolve {
import dispatch.{Http,url}
val remote_urlbase="http://typesafe.artifactoryonline.com/typesafe/scala-sha-bootstrap/org/scala-lang/bootstrap"
val pullBinaryLibs = TaskKey[Unit]("pull-binary-libs", "Pulls binary libs by the SHA key.")
val pushBinaryLibs = TaskKey[Unit]("push-binary-libs", "Pushes binary libs whose SHA has changed.")
val binaryLibCache = SettingKey[File]("binary-lib-cache", "Location of the cache of binary libs for this scala build.")
def settings: Seq[Setting[_]] = Seq(
binaryLibCache in ThisBuild := file(System.getProperty("user.home")) / ".sbt" / "cache" / "scala",
pullBinaryLibs in ThisBuild <<= (baseDirectory, binaryLibCache, streams) map resolveLibs
)
def resolveLibs(dir: File, cacheDir: File, s: TaskStreams): Unit = loggingParallelExceptions(s) {
val files = (dir / "test" / "files" ** "*.desired.sha1") +++ (dir / "lib" ** "*.desired.sha1")
for {
(file, name) <- (files x relativeTo(dir)).par
uri = name.dropRight(13)
jar = dir / uri
if !jar.exists || !isValidSha(file)
sha = getShaFromShafile(file)
} pullFile(jar, sha + "/" + uri, cacheDir, s)
}
@inline final def loggingParallelExceptions[U](s: TaskStreams)(f: => U): U = try f catch {
case t: CompositeThrowable =>
s.log.error("Error during parallel execution, GET READ FOR STACK TRACES!!")
t.throwables foreach (t2 => s.log.trace(t2))
throw t
}
def getShaFromShafile(file: File): String = (IO read file split "\\s" headOption) getOrElse error("No SHA found for " + file)
def isValidSha(file: File): Boolean =
try (Process(Seq("shasum", "-p", "--check", file.getAbsolutePath), Some(file.getParentFile)).!! contains "OK")
catch {
case t: Exception => false
}
def pullFile(file: File, uri: String, cacheDir: File, s: TaskStreams): Unit = {
val cachedFile = cacheDir / uri
if (!cachedFile.exists) {
// Ensure the directory for the cache exists.
cachedFile.getParentFile.mkdirs()
val url = remote_urlbase + "/" + uri
val fous = new java.io.FileOutputStream(cachedFile)
s.log.info("Pulling [" + cachedFile + "] to cache")
try Http(dispatch.url(url) >>> fous) finally fous.close()
}
s.log.info("Pulling [" + file + "] from local cache")
IO.copyFile(cachedFile, file)
}
def pushFile(file: File, uri: String, user: String, pw: String): Unit = {
val url = remote_urlbase + "/" + uri
val sender = dispatch.url(url).PUT.as(user,pw) <<< (file, "application/java-archive")
// TODO - output to logger.
Http(sender >>> System.out)
}
}
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