creating rpm using sbt native packager for scala play app - scala

Question

I'm using sbt native packager (https://github.com/sbt/sbt-native-packager) to create rpm for the scala play application. I followed the instruction to run the command sbt rpm:packageBin. However, it builds the .jar file, is this the rpm build? I thought the rpm build should be .rpm extension?
I did get error but I am still able to see the .jar file
[info] Done packaging.
[error] `rpmVendor in Rpm` is empty. Please provide a valid vendor for the rpm SPEC.
[error] java.lang.RuntimeException: There are issues with the rpm spec data.
[error] at scala.sys.package$.error(package.scala:27)
[error] at com.typesafe.sbt.packager.rpm.RpmSpec.validate(RpmMetadata.scala:154)
[error] at com.typesafe.sbt.packager.rpm.RpmHelper$.stage(RpmHelper.scala:25)
[error] at com.typesafe.sbt.packager.rpm.RpmPlugin$.$anonfun$projectSettings$47(RpmPlugin.scala:158)
[error] at scala.Function1.$anonfun$compose$1(Function1.scala:44)
[error] at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:42)
[error] at sbt.std.Transform$$anon$4.work(System.scala:64)
[error] at sbt.Execute.$anonfun$submit$2(Execute.scala:257)
[error] at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:16)
[error] at sbt.Execute.work(Execute.scala:266)
[error] at sbt.Execute.$anonfun$submit$1(Execute.scala:257)
[error] at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:167)
[error] at sbt.CompletionService$$anon$2.call(CompletionService.scala:32)
[error] at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[error] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[error] at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[error] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
[error] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
[error] at java.lang.Thread.run(Thread.java:748)
[error] (rpm:stage) There are issues with the rpm spec data.

Answer 1

Play Framework requires some additional settings for rpm. This is documented here in the Play Documentation.
For simplicity I copy the relevant part here:
Minimal RPM settings
Add the following settings to your build:
lazy val root = (project in file("."))
.enablePlugins(PlayScala)
maintainer in Linux := "First Lastname <first.last#example.com>"
packageSummary in Linux := "My custom package summary"
packageDescription := "My longer package description"
rpmRelease := "1"
rpmVendor := "example.com"
rpmUrl := Some("http://github.com/example/server")
rpmLicense := Some("Apache v2")
Then build your package with:
[my-first-app] $ rpm:packageBin
Finally you should have projectname-projectversion.rpm eventually under target/rpm/RPMS/noarch/ -folder (or something similar).

Answer 2

After your comments I would say you need to add more information in your build.sbt file.
Your project should include data about the rpm. There are lots settings here you can use, but the bare minimum is to add rpmVendor to your build.sbt like this:
rpmVendor := "VendorName"
If you need examples, take a look at some on Github.