#22903 Fix code snippeds

* move scala and java sources out of paradox sources
* replace relative paths with $code$ and $akka$
* fix broken includes

akka-docs/build.sbt

@@ -8,7 +8,7 @@ Formatting.docFormatSettings
 Dependencies.docs
 
 unmanagedSourceDirectories in ScalariformKeys.format in Test <<= unmanagedSourceDirectories in Test
-//TODO: additionalTasks in ValidatePR += paradox in Paradox
+additionalTasks in ValidatePR += paradox
 
 enablePlugins(ScaladocNoVerificationOfDiagrams)
 disablePlugins(MimaPlugin)
@@ -17,7 +17,9 @@ enablePlugins(ParadoxPlugin)
 paradoxProperties ++= Map(
   "extref.wikipedia.base_url" -> "https://en.wikipedia.org/wiki/%s",
   "scala.version" -> scalaVersion.value,
-  "akka.version" -> version.value
+  "akka.version" -> version.value,
+  "snip.code.base_dir" -> (sourceDirectory in Compile).value.getAbsolutePath,
+  "snip.akka.base_dir" -> ((baseDirectory in Compile).value / "..").getAbsolutePath
 )
 paradoxTheme := Some("com.lightbend.akka" % "paradox-theme-akka" % "0.1.0-SNAPSHOT")
 paradoxNavigationDepth := 1

akka-docs/src/main/java/jdocs/circuitbreaker/DangerousJavaActor.java

@@ -1,7 +1,7 @@
 /**
  * Copyright (C) 2009-2017 Lightbend Inc. <http://www.lightbend.com>
  */
-package docs.circuitbreaker;
+package jdocs.circuitbreaker;
 
 //#imports1
 

akka-docs/src/main/java/jdocs/circuitbreaker/EvenNoFailureJavaExample.java

@@ -1,4 +1,4 @@
-package docs.circuitbreaker;
+package jdocs.circuitbreaker;
 
 import akka.actor.AbstractActor;
 import akka.pattern.CircuitBreaker;

akka-docs/src/main/java/jdocs/circuitbreaker/TellPatternJavaActor.java

@@ -1,7 +1,7 @@
 /**
  * Copyright (C) 2009-2017 Lightbend Inc. <http://www.lightbend.com>
  */
-package docs.circuitbreaker;
+package jdocs.circuitbreaker;
 
 import akka.actor.ActorRef;
 import akka.actor.ReceiveTimeout;

akka-docs/src/main/java/jdocs/config/ConfigDoc.java

@@ -1,7 +1,7 @@
 /**
  * Copyright (C) 2009-2017 Lightbend Inc. <http://www.lightbend.com>
  */
-package docs.config;
+package jdocs.config;
 
 import akka.actor.ActorSystem;
 import com.typesafe.config.*;

akka-docs/src/main/java/jdocs/duration/Java.java

@@ -2,7 +2,7 @@
  * Copyright (C) 2013-2017 Lightbend Inc. <http://www.lightbend.com>
  */
 
-package docs.duration;
+package jdocs.duration;
 
 //#import
 import scala.concurrent.duration.Duration;