Added SBT target for building a single JAR with Spark Core and its

dependencies

project/build/SparkProject.scala

 import sbt._
+import sbt.Process._
+
+import assembly._
+
 import de.element34.sbteclipsify._
 
-import sbt.Process._
 
 class SparkProject(info: ProjectInfo)
 extends ParentProject(info) with IdeaProject
@@ -12,31 +15,54 @@ extends ParentProject(info) with IdeaProject
     project("examples", "Spark Examples", new ExamplesProject(_), core)
 
   class CoreProject(info: ProjectInfo)
-  extends DefaultProject(info) with Eclipsify with IdeaProject
+  extends DefaultProject(info) with Eclipsify with IdeaProject with AssemblyBuilder
   {
-    val TARGET = path("target") / "scala_2.8.1"
-
-    val TEST_REPORT_DIR = TARGET / "test-report"
+    def testReportDir = outputPath / "test-report"
 
     // Create an XML test report using ScalaTest's -u option. Unfortunately
     // there is currently no way to call this directly from SBT without
     // executing a subprocess.
     lazy val testReport = task {
-      log.info("Creating " + TEST_REPORT_DIR + "...")
-      if (!TEST_REPORT_DIR.exists) {
-        TEST_REPORT_DIR.asFile.mkdirs()
+      log.info("Creating " + testReportDir + "...")
+      if (!testReportDir.exists) {
+        testReportDir.asFile.mkdirs()
       }
 
       log.info("Executing org.scalatest.tools.Runner...")
       val command = ("scala -classpath " + testClasspath.absString + 
                      " org.scalatest.tools.Runner -o " + 
-                     " -u " + TEST_REPORT_DIR.absolutePath +
-                     " -p " + (TARGET / "test-classes").absolutePath)
+                     " -u " + testReportDir.absolutePath +
+                     " -p " + (outputPath / "test-classes").absolutePath)
       val process = Process(command, path("."), "JAVA_OPTS" -> "-Xmx500m")
       process !
 
       None
     }.dependsOn(compile, testCompile).describedAs("Generate XML test report.")
+
+    def singleJarExclude(base: PathFinder) = {
+      (base / "scala" ** "*") +++ ( // exclude scala library
+        (base / "META-INF" ** "*") --- // generally ignore the hell out of META-INF
+        (base / "META-INF" / "services" ** "*") --- // include all service providers
+        (base / "META-INF" / "maven" ** "*")) // include all Maven POMs and such
+    }
+
+    def singleJarTempDir = outputPath / "single-jar-classes"
+
+    def singleJarOutputPath =
+      outputPath / (name.toLowerCase.replace(" ", "-") + "-single-jar-" + version.toString + ".jar")
+
+    // Create a JAR with Spark Core and all its dependencies. We use some methods in
+    // the AssemblyBuilder plugin, but because this plugin attempts to package Scala
+    // too, we leave that out using our own exclude filter (singleJarExclude).
+    lazy val singleJar = {
+      packageTask(
+        Path.lazyPathFinder(assemblyPaths(singleJarTempDir,
+                                          assemblyClasspath,
+                                          assemblyExtraJars,
+                                          singleJarExclude)),
+        singleJarOutputPath,
+        packageOptions)
+    }.dependsOn(compile).describedAs("Build a single JAR with project and its dependencies")
   }
 
   class ExamplesProject(info: ProjectInfo)

project/plugins/SparkProjectPlugins.scala

@@ -5,4 +5,7 @@ class SparkProjectPlugins(info: ProjectInfo) extends PluginDefinition(info) {
 
   val sbtIdeaRepo = "sbt-idea-repo" at "http://mpeltonen.github.com/maven/"
   val sbtIdea = "com.github.mpeltonen" % "sbt-idea-plugin" % "0.2.0"
+
+  val codaRepo = "Coda Hale's Repository" at "http://repo.codahale.com/"
+  val assemblySBT = "com.codahale" % "assembly-sbt" % "0.1.1"
 }

project/plugins/project/build.properties

 #Project properties
-#Tue Feb 01 23:56:56 PST 2011
+#Wed Feb 02 16:50:14 PST 2011
 plugin.uptodate=true