timxi/sbt-native-packager-examples

A set of sbt-native-pakager examples

Goal

This is a small collection of sbt-native-packager examples. Each example is very small and should be easy to understand. Pick the ones you need and tailor your packaging process.

Not all examples are 100% tested. Just open an issue if something doesn't work

Examples

Currently all examples are tested for Debian only. Feel free to correct and contribute.

Application configuration

Your application has an external configuration, which you want to change and the application should pick up this changes.

Requirements

• Linux OS (debian/rpm)
• Typesafe Config

How it's done

Typesafe config uses the system property config.file to pass in a configuration location. So you don't need to add a folder to the classpath, which could be a potential security risk.

Project

You can find a working example at application-conf

Log4j configuration

This is related to the Application configuration. This time we use log4j.

Requirements

• Linux OS (debian/rpm)
• Log4j 2 (works in a similar way with 1.x)

How it's done

Log4j uses the system property log4j.configurationFile to pass in a configuration location. So you don't need to add a folder to the classpath, which could be a potential security risk.

Log4j 2 as also a cool auto reconfigurate feature, which can come in very handy.

Project

You can find a working example at log4j-conf

Custom Startup Parameters

A small example how to configure your startup parameters with SBT Native Packager. You'll see how to add java system properties and application arguments. We also change the -Xmx and -Xms settings.

Requirements

• Linux OS (debian/rpm)

How it's done

Create a file src/templates/etc-default and fill it with the content you need.

Project

You can find a working example at startscript-parameters

Links

• SBT Native Packager
• SBT Native Packager Presentation