Allow linkerd-examples to accept arguments (linkerd#475)

adleong · web-flow · commit 690c230933ec · 2016-06-13T17:27:45.000-07:00
# Problem The run task on the linkerd example configurations does not accept arguments: ``` $ ./sbt 'linkerd-examples/transit:run --log.level=DEBUG' [info] Loading project definition from /Users/alex/workspace/linkerd/project [info] Set current project to all (in build file:/Users/alex/workspace/linkerd/) [error] Expected key [error] Expected '::' [error] Expected end of input. [error] linkerd-examples/transit:run --log.level=DEBUG ``` # Solution Parse arguments using "the exotic, elusive creature known as inputTaskDyn, with which even Stack Overflow cannot help you" (1) and feed them into `run`. (1) sbt/sbt#999
diff --git a/project/Base.scala b/project/Base.scala
@@ -1,6 +1,7 @@
 import com.typesafe.sbt.SbtScalariform.{scalariformSettings => baseScalariformSettings, _}
 import sbt._
 import sbt.Keys._
+import complete.Parsers.spaceDelimited
 import sbtassembly.AssemblyKeys._
 import sbtassembly.AssemblyPlugin.assemblySettings
 import sbtassembly.MergeStrategy
@@ -117,10 +118,11 @@ class Base extends Build {
     // The runtime configuration may be different from the example configuration.
     runtimeConfiguration := configuration.value,
     run := // call linkerd's run command with a config file
-      Def.taskDyn {
+      Def.inputTaskDyn {
         val path = configFile.value.getPath
-        (run in runtime in runtimeConfiguration.value).toTask(s" $path")
-      }.value
+        val args = spaceDelimited("<args>").parsed.mkString(" ")
+        (run in runtime in runtimeConfiguration.value).toTask(s" $path $args")
+      }.evaluated
   )
 
   // Helper method for constructing projects from directory structure
