ytaras / heroku-buildpack-skinny

Heroku Skinny Buildpack

This is a Heroku buildpack for the Skinny framework.

Usage

Install the Heroku Toolbelt and create a free Heroku account. Then login in with that account by running:

$ heroku login

Make sure you have a Git repo for you app. From the root of your project run:

$ git init
$ git add .
$ git commit -am "deploy to heroku"

Then create a Heroku app:

$ heroku create

Set this buildpack as the default buildpack:

$ heroku buildpacks:set https://github.com/jkutner/heroku-buildpack-skinny

And push your app to Heroku:

$ git push heroku master

The first deploy will take a long time because it must download all dependencies. But they will be cached, so the next deploy will be faster.

Database

The buildpack will automatically set up the connection URL for you, but you may need to include the PostgreSQL (or other vendor's) driver in your dependencies. Addd something like this to project/Build.scala:

libraryDependencies ++= Seq(
  "org.postgresql" % "postgresql" % "9.4-1201-jdbc41"
)

To run migrations, configure your src/main/resources/application.conf with something like this:

production {
  db {
    default {
      driver="org.postgresql.Driver"
      url=${?JDBC_DATABASE_URL}
    }
  }
}

You can get the value for $JDBC_DATABASE_URL by running heroku run echo \$JDBC_DATABASE_URL. Set that value locally, but add the arguments ssl=true&sslfactory=org.postgresql.ssl.NonValidatingFactory, and then run:

./skinny db:migrate production default

Customizing

By default, the buildpack runs your app with a command like:

java $JAVA_OPTS -Dskinny.port=$PORT -Dskinny.env=production -Ddb.default.url=$JDBC_DATABASE_URL -Ddb.default.user=$JDBC_DATABASE_USER -Ddb.default.password=$JDBC_DATABASE_PASSWORD -jar standalone-build/target/scala-2.11/*.jar

You can customize this by setting JAVA_OPTS like this:

$ heroku config:set JAVA_OPTS="-XX:+UseCompressedOops"

Or you can create a Procfile in the root directory with contents like this:

web: java \$JAVA_OPTS -Dskinny.port=\$PORT -Dskinny.env=production -Ddb.default.url=\$JDBC_DATABASE_URL -Ddb.default.user=\$JDBC_DATABASE_USER -Ddb.default.password=\$JDBC_DATABASE_PASSWORD -jar standalone-build/target/scala-2.11/*.jar

Then add the Procfile to Git and redeploy with git push heroku master.

License

MIT