CODEWITHSUNDEEP
scalasbt
daragh sweeney
daragh sweeney

Reputation: 11

running tasks on an sbt build

I have just started using sbt and am not too sure exactly how it works, I have created a task in the build.sbt file 

lazy val execScript = taskKey[Unit]("Execute the shell script")
execScript := {
"C:/Users/dsweeney/Documents/configuration-services/swagger/codegen/SwaggerActivate.bat" !
}

I can run it fine but I want it to run every time the build file is run, how exactly do I do this?

I have been trying to add it to the .aggerate method

lazy val root = Project(
 id = "configsvcs",
 base = file(".")
).dependsOn(data_model)
.aggregate(data_model, slickMigration, execScript )

but that doesn't appear to be working error is Too many arguments for method aggregate.

thanks

Upvotes: 0

Views: 818

Answers (1)

cbley
cbley

Reputation: 4608

It seems you want to generate source files during your build. The correct way to achieve this is:

sourceGenerators in Compile += execScript.taskValue

This will run the task every time before compiling your project. For this to work, your task must return a list of files it generates:

lazy val execScript = taskKey[Seq[File]]("Execute the shell script")

execScript := {
   val outputDir := sourceManaged.in(Compile).value / "generated"

   // bad: absolute local path
   "C:/Users/dsweeney/Documents/configuration-services/swagger/codegen/SwaggerActivate.bat" !

   // return all Java files of the output directory
   outputDir ** "*.java" // or "*.scala"?
}

Note, it is good practice to generate the files into the sourceManaged directory.

Upvotes: 1

Related Questions