Gilt/AOL Hackathon Scala Starter
6 January 2012
Eric Bowman/ebowman@gilt.com

This should "just work" once you've cloned this repo.

I've created a little shell program, that uses actors to stream an http response. We'll modify this starter program to implement a Shoutcast server during the hackathon.

To run it, from a bash shell, do:

./sbt

The first time, this will download a bunch of dependencies:

$ ./sbt
[info] Loading global plugins from /Users/ebowman/.sbt/plugins
[info] Updating {file:/Users/ebowman/.sbt/plugins/}default-a208a2...
[info] Resolving com.github.mpeltonen#sbt-idea;0.11.0 ...
[info] Resolving commons-io#commons-io;2.0.1 ...
[info] Resolving org.apache.commons#commons-parent;15 ...
[info] Resolving org.apache#apache;7 ...
[info] Resolving org.scala-tools.sbt#sbt_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#main_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#actions_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#classfile_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#io_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#control_2.9.1;0.11.2 ...
[info] Resolving org.scala-lang#scala-library;2.9.1 ...
[info] Resolving org.scala-tools.sbt#interface;0.11.2 ...
[info] Resolving org.scala-tools.sbt#logging_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#process_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#classpath_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#launcher-interface_2.9.1;0.11.2 ...
[info] Resolving org.scala-lang#scala-compiler;2.9.1 ...
[info] Resolving org.scala-tools.sbt#incremental-compiler_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#collections_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#api_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#persist_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbinary#sbinary_2.9.0;0.4.0 ...
[info] Resolving org.scala-tools.sbt#compile_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#ivy_2.9.1;0.11.2 ...
[info] Resolving org.apache.ivy#ivy;2.2.0 ...
[info] Resolving org.apache#apache;7 ...
[info] Resolving com.jcraft#jsch;0.1.31 ...
[info] Resolving commons-httpclient#commons-httpclient;3.1 ...
[info] Resolving commons-logging#commons-logging;1.0.4 ...
[info] Resolving commons-codec#commons-codec;1.2 ...
[info] Resolving org.scala-tools.sbt#completion_2.9.1;0.11.2 ...
[info] Resolving jline#jline;0.9.94 ...
[info] Resolving org.scala-tools.sbt#run_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#task-system_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#tasks_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#tracking_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#cache_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#testing_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.testing#test-interface;0.5 ...
[info] Resolving org.scala-tools.sbt#compiler-interface;0.11.2 ...
[info] Resolving org.scala-tools.sbt#precompiled-2_8_1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#precompiled-2_8_0;0.11.2 ...
[info] Resolving org.scala-tools.sbt#precompiled-2_9_0;0.11.2 ...
[info] downloading http://mpeltonen.github.com/maven/com/github/mpeltonen/sbt-idea_2.9.1_0.11.2/0.11.0/sbt-idea-0.11.0.jar ...
[info]  [SUCCESSFUL ] com.github.mpeltonen#sbt-idea;0.11.0!sbt-idea.jar (3249ms)
[info] downloading http://repo1.maven.org/maven2/commons-io/commons-io/2.0.1/commons-io-2.0.1.jar ...
[info]  [SUCCESSFUL ] commons-io#commons-io;2.0.1!commons-io.jar (2020ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/sbt_2.9.1/0.11.2/jars/sbt_2.9.1.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#sbt_2.9.1;0.11.2!sbt_2.9.1.jar (997ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/main_2.9.1/0.11.2/jars/main_2.9.1.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#main_2.9.1;0.11.2!main_2.9.1.jar (12604ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/compiler-interface/0.11.2/jars/compiler-interface-src.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#compiler-interface;0.11.2!compiler-interface-src.jar (879ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/compiler-interface/0.11.2/jars/compiler-interface-bin.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#compiler-interface;0.11.2!compiler-interface-bin.jar (1437ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/precompiled-2_8_1/0.11.2/jars/compiler-interface-bin.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#precompiled-2_8_1;0.11.2!compiler-interface-bin.jar (1060ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/precompiled-2_8_0/0.11.2/jars/compiler-interface-bin.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#precompiled-2_8_0;0.11.2!compiler-interface-bin.jar (1107ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/precompiled-2_9_0/0.11.2/jars/compiler-interface-bin.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#precompiled-2_9_0;0.11.2!compiler-interface-bin.jar (1205ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/actions_2.9.1/0.11.2/jars/actions_2.9.1.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#actions_2.9.1;0.11.2!actions_2.9.1.jar (2159ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/interface/0.11.2/jars/interface.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#interface;0.11.2!interface.jar (894ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/io_2.9.1/0.11.2/jars/io_2.9.1.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#io_2.9.1;0.11.2!io_2.9.1.jar (1542ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/ivy_2.9.1/0.11.2/jars/ivy_2.9.1.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#ivy_2.9.1;0.11.2!ivy_2.9.1.jar (2328ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/launcher-interface_2.9.1/0.11.2/jars/launcher-interface_2.9.1.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#launcher-interface_2.9.1;0.11.2!launcher-interface_2.9.1.jar (759ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/logging_2.9.1/0.11.2/jars/logging_2.9.1.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#logging_2.9.1;0.11.2!logging_2.9.1.jar (942ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/process_2.9.1/0.11.2/jars/process_2.9.1.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#process_2.9.1;0.11.2!process_2.9.1.jar (1075ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/run_2.9.1/0.11.2/jars/run_2.9.1.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#run_2.9.1;0.11.2!run_2.9.1.jar (1110ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/classfile_2.9.1/0.11.2/jars/classfile_2.9.1.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#classfile_2.9.1;0.11.2!classfile_2.9.1.jar (975ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/classpath_2.9.1/0.11.2/jars/classpath_2.9.1.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#classpath_2.9.1;0.11.2!classpath_2.9.1.jar (997ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/incremental-compiler_2.9.1/0.11.2/jars/incremental-compiler_2.9.1.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#incremental-compiler_2.9.1;0.11.2!incremental-compiler_2.9.1.jar (1122ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/persist_2.9.1/0.11.2/jars/persist_2.9.1.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#persist_2.9.1;0.11.2!persist_2.9.1.jar (1055ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/compile_2.9.1/0.11.2/jars/compile_2.9.1.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#compile_2.9.1;0.11.2!compile_2.9.1.jar (1150ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/completion_2.9.1/0.11.2/jars/completion_2.9.1.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#completion_2.9.1;0.11.2!completion_2.9.1.jar (2207ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/api_2.9.1/0.11.2/jars/api_2.9.1.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#api_2.9.1;0.11.2!api_2.9.1.jar (2809ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/task-system_2.9.1/0.11.2/jars/task-system_2.9.1.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#task-system_2.9.1;0.11.2!task-system_2.9.1.jar (1959ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/tasks_2.9.1/0.11.2/jars/tasks_2.9.1.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#tasks_2.9.1;0.11.2!tasks_2.9.1.jar (1818ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/tracking_2.9.1/0.11.2/jars/tracking_2.9.1.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#tracking_2.9.1;0.11.2!tracking_2.9.1.jar (983ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/testing_2.9.1/0.11.2/jars/testing_2.9.1.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#testing_2.9.1;0.11.2!testing_2.9.1.jar (926ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/control_2.9.1/0.11.2/jars/control_2.9.1.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#control_2.9.1;0.11.2!control_2.9.1.jar (1091ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/collections_2.9.1/0.11.2/jars/collections_2.9.1.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#collections_2.9.1;0.11.2!collections_2.9.1.jar (2065ms)
[info] downloading http://repo1.maven.org/maven2/org/scala-tools/sbinary/sbinary_2.9.0/0.4.0/sbinary_2.9.0-0.4.0.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbinary#sbinary_2.9.0;0.4.0!sbinary_2.9.0.jar (1371ms)
[info] downloading http://repo1.maven.org/maven2/org/apache/ivy/ivy/2.2.0/ivy-2.2.0.jar ...
[info]  [SUCCESSFUL ] org.apache.ivy#ivy;2.2.0!ivy.jar (3123ms)
[info] downloading http://repo1.maven.org/maven2/com/jcraft/jsch/0.1.31/jsch-0.1.31.jar ...
[info]  [SUCCESSFUL ] com.jcraft#jsch;0.1.31!jsch.jar (1264ms)
[info] downloading http://repo1.maven.org/maven2/commons-httpclient/commons-httpclient/3.1/commons-httpclient-3.1.jar ...
[info]  [SUCCESSFUL ] commons-httpclient#commons-httpclient;3.1!commons-httpclient.jar (1517ms)
[info] downloading http://repo1.maven.org/maven2/commons-logging/commons-logging/1.0.4/commons-logging-1.0.4.jar ...
[info]  [SUCCESSFUL ] commons-logging#commons-logging;1.0.4!commons-logging.jar (997ms)
[info] downloading http://repo1.maven.org/maven2/commons-codec/commons-codec/1.2/commons-codec-1.2.jar ...
[info]  [SUCCESSFUL ] commons-codec#commons-codec;1.2!commons-codec.jar (1001ms)
[info] downloading http://repo1.maven.org/maven2/jline/jline/0.9.94/jline-0.9.94.jar ...
[info]  [SUCCESSFUL ] jline#jline;0.9.94!jline.jar (1046ms)
[info] downloading http://repo.typesafe.com/typesafe/ivy-releases/org.scala-tools.sbt/cache_2.9.1/0.11.2/jars/cache_2.9.1.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.sbt#cache_2.9.1;0.11.2!cache_2.9.1.jar (1732ms)
[info] downloading http://repo1.maven.org/maven2/org/scala-tools/testing/test-interface/0.5/test-interface-0.5.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.testing#test-interface;0.5!test-interface.jar (622ms)
[info] Done updating.
[info] Set current project to scala-shoutcast (in build file:/Users/ebowman/src/ScalaBootstrap/)

When it's ready to go, it will give you a prompt like:

>

Here you type "run", and it will compile and startup a server:

> run
[info] Updating {file:/Users/ebowman/src/ScalaBootstrap/}default-a3c2fb...
[info] Resolving org.scala-lang#scala-library;2.9.1 ...
[info] Resolving cc.spray.can#spray-can;0.9.1 ...
[info] Resolving se.scalablesolutions.akka#akka-actor;1.2 ...
[info] Resolving org.slf4j#slf4j-api;1.6.1 ...
[info] Resolving org.slf4j#slf4j-parent;1.6.1 ...
[info] Resolving ch.qos.logback#logback-classic;0.9.28 ...
[info] Resolving ch.qos.logback#logback-parent;0.9.28 ...
[info] Resolving ch.qos.logback#logback-core;0.9.28 ...
[info] Resolving ch.qos.logback#logback-parent;0.9.28 ...
[info] Resolving org.scalatest#scalatest_2.9.1;1.6.1 ...
[info] Resolving org.scala-tools.testing#scalacheck_2.9.1;1.9 ...
[info] Resolving org.scala-tools.testing#test-interface;0.5 ...
[info] downloading http://scala-tools.org/repo-releases/cc/spray/can/spray-can/0.9.1/spray-can-0.9.1.jar ...
[info]  [SUCCESSFUL ] cc.spray.can#spray-can;0.9.1!spray-can.jar (3371ms)
[info] downloading http://repo.typesafe.com/typesafe/releases/ch/qos/logback/logback-classic/0.9.28/logback-classic-0.9.28.jar ...
[info]  [SUCCESSFUL ] ch.qos.logback#logback-classic;0.9.28!logback-classic.jar (1913ms)
[info] downloading http://repo.typesafe.com/typesafe/releases/ch/qos/logback/logback-core/0.9.28/logback-core-0.9.28.jar ...
[info]  [SUCCESSFUL ] ch.qos.logback#logback-core;0.9.28!logback-core.jar (1759ms)
[info] downloading http://repo.typesafe.com/typesafe/releases/se/scalablesolutions/akka/akka-actor/1.2/akka-actor-1.2.jar ...
[info]  [SUCCESSFUL ] se.scalablesolutions.akka#akka-actor;1.2!akka-actor.jar (5238ms)
[info] downloading http://repo.typesafe.com/typesafe/releases/org/slf4j/slf4j-api/1.6.1/slf4j-api-1.6.1.jar ...
[info]  [SUCCESSFUL ] org.slf4j#slf4j-api;1.6.1!slf4j-api.jar (664ms)
[info] downloading http://repo.typesafe.com/typesafe/releases/org/scalatest/scalatest_2.9.1/1.6.1/scalatest_2.9.1-1.6.1.jar ...
[info]  [SUCCESSFUL ] org.scalatest#scalatest_2.9.1;1.6.1!scalatest_2.9.1.jar (13181ms)
[info] downloading http://repo.typesafe.com/typesafe/releases/org/scala-tools/testing/scalacheck_2.9.1/1.9/scalacheck_2.9.1-1.9.jar ...
[info]  [SUCCESSFUL ] org.scala-tools.testing#scalacheck_2.9.1;1.9!scalacheck_2.9.1.jar (2524ms)
[info] Done updating.
[info] Compiling 1 Scala source to /Users/ebowman/src/ScalaBootstrap/target/scala-2.9.1/classes...
[info] Running com.gilt.hackathon.Main 
01/10 22:36:16.180 INFO [run-main] c.s.c.HttpServer - Starting spray-can HTTP server on localhost/127.0.0.1:8080

Now you can hit http://localhost:8080, and get a page with a link to stream a file. We'll develop this as part of the hackathon.

Type ctl-c to stop the server.

Subsequent runs are a lot less hassle:

$ ./sbt
[info] Loading global plugins from /Users/ebowman/.sbt/plugins
[info] Set current project to scala-shoutcast (in build file:/Users/ebowman/src/ScalaBootstrap/)
> run
[info] Running com.gilt.hackathon.Main 
01/10 22:37:25.124 INFO [run-main] c.s.c.HttpServer - Starting spray-can HTTP server on localhost/127.0.0.1:8080

SBT & IDEs
==========

To integrate sbt with IntelliJ:

    Add the following lines to ~/.sbt/plugins/build.sbt or PROJECT_DIR/project/plugins.sbt

    resolvers += "boboco-repo" at "http://boboco.ie/repo"

    addSbtPlugin("com.github.mpeltonen" %% "sbt-idea" % "0.11.0")

    use gen-idea sbt task to create Idea project files

    (e.g., ./sbt gen-idea)

    See https://github.com/mpeltonen/sbt-idea

To integrate sbt with Eclipse:

    Add the following lines to ~/.sbt/plugins/build.sbt or PROJECT_DIR/project/plugins.sbt

    addSbtPlugin("com.typesafe.sbteclipse" % "sbteclipse-plugin" % "2.0.0-M3")

    use eclipse sbt task to create Eclipse project files

    (e.g., ./sbt eclipse)

    See https://github.com/typesafehub/sbteclipse