Removed deprecated repl file ClassServer.scala

src/scala/spark/repl/ClassServer.scala

-package spark.repl
-
-import java.io.File
-import java.net.InetAddress
-
-import org.eclipse.jetty.server.Server
-import org.eclipse.jetty.server.handler.DefaultHandler
-import org.eclipse.jetty.server.handler.HandlerList
-import org.eclipse.jetty.server.handler.ResourceHandler
-
-import spark.Logging
-
-
-/**
- * Exception type thrown by ClassServer when it is in the wrong state 
- * for an operation.
- */
-class ServerStateException(message: String) extends Exception(message)
-
-
-/**
- * An HTTP server used by the interpreter to allow worker nodes to access
- * class files created as the user types in lines of code. This is just a
- * wrapper around a Jetty embedded HTTP server.
- */
-class ClassServer(classDir: File) extends Logging {
-  private var server: Server = null
-  private var port: Int = -1
-
-  def start() {
-    if (server != null) {
-      throw new ServerStateException("Server is already started")
-    } else {
-      server = new Server(0)
-      val resHandler = new ResourceHandler
-      resHandler.setResourceBase(classDir.getAbsolutePath)
-      val handlerList = new HandlerList
-      handlerList.setHandlers(Array(resHandler, new DefaultHandler))
-      server.setHandler(handlerList)
-      server.start()
-      port = server.getConnectors()(0).getLocalPort()
-      logDebug("ClassServer started at " + uri)
-    }
-  }
-
-  def stop() {
-    if (server == null) {
-      throw new ServerStateException("Server is already stopped")
-    } else {
-      server.stop()
-      port = -1
-      server = null
-    }
-  }
-
-  /**
-   * Get the URI of this HTTP server (http://host:port)
-   */
-  def uri: String = {
-    if (server == null) {
-      throw new ServerStateException("Server is not started")
-    } else {
-      return "http://" + getLocalIpAddress + ":" + port
-    }
-  }
-
-  /**
-   * Get the local host's IP address in dotted-quad format (e.g. 1.2.3.4)
-   */
-  private def getLocalIpAddress: String = {
-    // Get local IP as an array of four bytes
-    val bytes = InetAddress.getLocalHost().getAddress()
-    // Convert the bytes to ints (keeping in mind that they may be negative)
-    // and join them into a string
-    return bytes.map(b => (b.toInt + 256) % 256).mkString(".")
-  }
-}