Merge pull request #4872 from szeiger/wip/sbt-osgi-2.12

Create a full Scala distribution from sbt [2.12]

2 files changed, 71 insertions, 0 deletions

diff --git a/project/Osgi.scala b/project/Osgi.scala
new file mode 100644
index 0000000000..78370b695b
--- /dev/null
+++ b/project/Osgi.scala
@@ -0,0 +1,69 @@
+import aQute.bnd.osgi.Builder
+import aQute.bnd.osgi.Constants._
+import java.util.Properties
+import sbt._
+import sbt.Keys._
+import scala.collection.JavaConversions._
+import VersionUtil.versionProperties
+
+/** OSGi packaging for the Scala build, distilled from sbt-osgi. We do not use sbt-osgi because it
+  * depends on a newer version of BND which gives slightly different output (probably OK to upgrade
+  * in the future but for now it would make comparing the sbt and ant build output harder) and does
+  * not allow a crucial bit of configuration that we need: Setting the classpath for BND. In sbt-osgi
+  * this is always `fullClasspath in Compile` whereas we want `products in Compile in packageBin`. */
+object Osgi {
+  val bundle = TaskKey[File]("osgiBundle", "Create an OSGi bundle.")
+  val bundleName = SettingKey[String]("osgiBundleName", "The Bundle-Name for the manifest.")
+  val bundleSymbolicName = SettingKey[String]("osgiBundleSymbolicName", "The Bundle-SymbolicName for the manifest.")
+  val headers = SettingKey[Seq[(String, String)]]("osgiHeaders", "Headers and processing instructions for BND.")
+
+  def settings: Seq[Setting[_]] = Seq(
+    bundleName := description.value,
+    bundleSymbolicName := organization.value + "." + name.value,
+    headers := {
+      val v = VersionUtil.versionProperties.value.osgiVersion
+      Seq(
+        "Bundle-Name" -> bundleName.value,
+        "Bundle-SymbolicName" -> bundleSymbolicName.value,
+        "ver" -> v,
+        "Export-Package" -> ("*;version=${ver}"),
+        "Import-Package" -> ("scala.*;version=\"${range;[==,=+);${ver}}\",*"),
+        "Bundle-Version" -> v,
+        "Bundle-RequiredExecutionEnvironment" -> "JavaSE-1.8",
+        "-eclipse" -> "false"
+      )
+    },
+    bundle <<= Def.task {
+      val res = (products in Compile in packageBin).value
+      bundleTask(headers.value.toMap, (products in Compile in packageBin).value,
+        (artifactPath in (Compile, packageBin)).value, res, streams.value)
+    },
+    packagedArtifact in (Compile, packageBin) <<= (artifact in (Compile, packageBin), bundle).identityMap,
+    // Also create OSGi source bundles:
+    artifact in (Compile, packageBin) ~= (_.copy(`type` = "bundle")),
+    packageOptions in (Compile, packageSrc) += Package.ManifestAttributes(
+      "Bundle-Name" -> (description.value + " Sources"),
+      "Bundle-SymbolicName" -> (bundleSymbolicName.value + ".source"),
+      "Bundle-Version" -> versionProperties.value.osgiVersion,
+      "Eclipse-SourceBundle" -> (bundleSymbolicName.value + ";version=\"" + versionProperties.value.osgiVersion + "\";roots:=\".\"")
+    )
+  )
+
+  def bundleTask(headers: Map[String, String], fullClasspath: Seq[File], artifactPath: File,
+                 resourceDirectories: Seq[File], streams: TaskStreams): File = {
+    val log = streams.log
+    val builder = new Builder
+    builder.setClasspath(fullClasspath.toArray)
+    headers foreach { case (k, v) => builder.setProperty(k, v) }
+    val includeRes = resourceDirectories.filter(_.exists).map(_.getAbsolutePath).mkString(",")
+    if(!includeRes.isEmpty) builder.setProperty(INCLUDERESOURCE, includeRes)
+    builder.getProperties.foreach { case (k, v) => log.debug(s"bnd: $k: $v") }
+    // builder.build is not thread-safe because it uses a static SimpleDateFormat.  This ensures
+    // that all calls to builder.build are serialized.
+    val jar = synchronized { builder.build }
+    builder.getWarnings.foreach(s => log.warn(s"bnd: $s"))
+    builder.getErrors.foreach(s => log.error(s"bnd: $s"))
+    jar.write(artifactPath)
+    artifactPath
+  }
+}
diff --git a/project/plugins.sbt b/project/plugins.sbt
index 862887d57f..02d66a16dd 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1,3 +1,5 @@
 libraryDependencies += "org.apache.commons" % "commons-lang3" % "3.3.2"
 
 libraryDependencies += "org.pantsbuild" % "jarjar" % "1.6.0"
+
+libraryDependencies += "biz.aQute.bnd" % "biz.aQute.bnd" % "2.4.1"