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PORunning akka within an SBT build task: reference configuration unexpectedly missing
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  1. PORunning akka within an SBT build task: reference configuration unexpectedly missing
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    copied!<p>I'm trying to run a rather simple HTTP POST request within a task I wrote for my SBT build, and seeing that SBT does not seem to have helpers for that, I settled on spray-client to accomplish this task.</p> <p>In a <code>project/dependencies.sbt</code> file I put the following: </p> <pre><code>resolvers += "spray.io repo" at "http://repo.spray.io/" libraryDependencies ++= Seq( "com.typesafe.akka" %% "akka-actor" % "2.2.3", "io.spray" % "spray-client" % "1.2.0") </code></pre> <p>And my task is implemented by:</p> <pre><code>def uploadSite(version: String, siteArchive: File, log: Logger): HttpResponse = { def request: HttpRequest = Post(siteUploadUrl, MultipartFormData(Map( // abridged )) implicit val system = ActorSystem() // &lt;-- Exception HERE! try { import system.dispatcher val future: Future[HttpResponse] = pipelining.sendReceive(request) Await.result(future, 1 minute) } finally system.shutdown() } </code></pre> <p>The task fails when I run it with the following exception:</p> <pre><code>com.typesafe.config.ConfigException$Missing: No configuration setting found for key 'akka' at com.typesafe.config.impl.SimpleConfig.findKey(SimpleConfig.java:115) at com.typesafe.config.impl.SimpleConfig.find(SimpleConfig.java:138) at com.typesafe.config.impl.SimpleConfig.find(SimpleConfig.java:150) at com.typesafe.config.impl.SimpleConfig.find(SimpleConfig.java:155) at com.typesafe.config.impl.SimpleConfig.getString(SimpleConfig.java:197) at akka.actor.ActorSystem$Settings.&lt;init&gt;(ActorSystem.scala:136) at akka.actor.ActorSystemImpl.&lt;init&gt;(ActorSystem.scala:470) at akka.actor.ActorSystem$.apply(ActorSystem.scala:111) at akka.actor.ActorSystem$.apply(ActorSystem.scala:93) at akka.actor.ActorSystem$.apply(ActorSystem.scala:82) at MyIO$.uploadSite(MyIO.scala:65) </code></pre> <p>My basic analysis is that the <code>reference.conf</code> file that can be found in <code>akka-actor_2.10-2.2.3.jar</code> is not read, for some reason that escapes me and maybe has something to do with how SBT manages its classpath for running the build.</p> <p>Some precisions: I'm on SBT 0.13.0 (hence Scala 2.10 for the build code) and I've checked that the aforementioned akka-actor jar indeed contains a reference.conf file which is as expected. When looking at what I <em>guess</em> might be related to the build execution classpath (<code>reload plugins</code> then <code>show runtime:fullClasspath</code> in sbt), that jar appears in the list.</p> <p>I also failed at googling anything relevant, being unable to convey that the problem lies with running akka from <em>within an SBT build</em>.</p> <p>In the end, I really have no idea how the 'akka' configuration key could be missing. Can anyone help?</p>
 

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