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author | Luca Rosellini <lrosellini@paradigmatecnologico.com> | 2014-01-03 12:57:06 +0100 |
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committer | Luca Rosellini <lrosellini@paradigmatecnologico.com> | 2014-01-03 12:57:06 +0100 |
commit | 0b6db8c186183704feafd26b454fff58a0e31861 (patch) | |
tree | dfdef8e8c88fcd875573e855f16b7ccd0e4e8503 /repl | |
parent | 87248bddac85f4ce755f35b2375757eb8c240011 (diff) | |
download | spark-0b6db8c186183704feafd26b454fff58a0e31861.tar.gz spark-0b6db8c186183704feafd26b454fff58a0e31861.tar.bz2 spark-0b6db8c186183704feafd26b454fff58a0e31861.zip |
Added ‘-i’ command line option to spark REPL.
We had to create a new implementation of both scala.tools.nsc.CompilerCommand and scala.tools.nsc.Settings, because using scala.tools.nsc.GenericRunnerSettings would bring in other options (-howtorun, -save and -execute) which don’t make sense in Spark.
Any new Spark specific command line option could now be added to org.apache.spark.repl.SparkRunnerSettings class.
Since the behavior of loading a script from the command line should be the same as loading it using the “:load” command inside the shell, the script should be loaded when the SparkContext is available, that’s why we had to move the call to ‘loadfiles(settings)’ _after_ the call to postInitialization(). This still doesn’t work if ‘isAsync = true’.
Diffstat (limited to 'repl')
3 files changed, 43 insertions, 3 deletions
diff --git a/repl/src/main/scala/org/apache/spark/repl/SparkCommandLine.scala b/repl/src/main/scala/org/apache/spark/repl/SparkCommandLine.scala new file mode 100644 index 0000000000..acb1e4ceda --- /dev/null +++ b/repl/src/main/scala/org/apache/spark/repl/SparkCommandLine.scala @@ -0,0 +1,22 @@ +package org.apache.spark.repl + +import scala.tools.nsc.{Settings, CompilerCommand} +import scala.Predef._ + +/** + * Command class enabling Spark-specific command line options (provided by + * <i>org.apache.spark.repl.SparkRunnerSettings</i>). + * + * @author Luca Rosellini <luca@stratio.com> + */ +class SparkCommandLine(args: List[String], override val settings: Settings) + extends CompilerCommand(args, settings) { + + def this(args: List[String], error: String => Unit) { + this(args, new SparkRunnerSettings(error)) + } + + def this(args: List[String]) { + this(args, str => Console.println("Error: " + str)) + } +} diff --git a/repl/src/main/scala/org/apache/spark/repl/SparkILoop.scala b/repl/src/main/scala/org/apache/spark/repl/SparkILoop.scala index f108c70f21..14c3feb55c 100644 --- a/repl/src/main/scala/org/apache/spark/repl/SparkILoop.scala +++ b/repl/src/main/scala/org/apache/spark/repl/SparkILoop.scala @@ -835,7 +835,7 @@ class SparkILoop(in0: Option[BufferedReader], protected val out: JPrintWriter, // runs :load `file` on any files passed via -i def loadFiles(settings: Settings) = settings match { - case settings: GenericRunnerSettings => + case settings: SparkRunnerSettings => for (filename <- settings.loadfiles.value) { val cmd = ":load " + filename command(cmd) @@ -902,7 +902,6 @@ class SparkILoop(in0: Option[BufferedReader], protected val out: JPrintWriter, addThunk(printWelcome()) addThunk(initializeSpark()) - loadFiles(settings) // it is broken on startup; go ahead and exit if (intp.reporter.hasErrors) return false @@ -922,6 +921,8 @@ class SparkILoop(in0: Option[BufferedReader], protected val out: JPrintWriter, } // printWelcome() + loadFiles(settings) + try loop() catch AbstractOrMissingHandler() finally closeInterpreter() @@ -955,7 +956,7 @@ class SparkILoop(in0: Option[BufferedReader], protected val out: JPrintWriter, /** process command-line arguments and do as they request */ def process(args: Array[String]): Boolean = { - val command = new CommandLine(args.toList, echo) + val command = new SparkCommandLine(args.toList, msg => echo(msg)) def neededHelp(): String = (if (command.settings.help.value) command.usageMsg + "\n" else "") + (if (command.settings.Xhelp.value) command.xusageMsg + "\n" else "") diff --git a/repl/src/main/scala/org/apache/spark/repl/SparkRunnerSettings.scala b/repl/src/main/scala/org/apache/spark/repl/SparkRunnerSettings.scala new file mode 100644 index 0000000000..235a688334 --- /dev/null +++ b/repl/src/main/scala/org/apache/spark/repl/SparkRunnerSettings.scala @@ -0,0 +1,17 @@ +package org.apache.spark.repl + +import scala.tools.nsc.Settings + +/** + * <i>scala.tools.nsc.Settings</i> implementation adding Spark-specific REPL + * command line options. + * + * @author Luca Rosellini <luca@stratio.com> + */ +class SparkRunnerSettings(error: String => Unit) extends Settings(error){ + + val loadfiles = MultiStringSetting( + "-i", + "file", + "load a file (assumes the code is given interactively)") +} |