jubei

Clojure + GraalVM based console application. It is a boilerplate for such type of solution and example of workflow.

Your Clojure application

1. Create simple Clojure application using lein:

lein new jubei

2. Update your project.clj file like this:

Installation and build

1. Fetch archive with GraalVM v.21.0.0.2:

curl -L https://github.com/graalvm/graalvm-ce-builds/releases/download/vm-21.0.0.2/graalvm-ce-java11-linux-amd64-21.0.0.2.tar.gz > graalvm-ce-java11-linux-amd64-21.0.0.2.tar.gz

2. Unpack the content:

tar zxf graalvm-ce-java11-linux-amd64-21.0.0.2.tar.gz

3. Move unpacked content to your local /opt directory:

sudo mv graalvm-ce-java11-21.0.0.2 /opt

4. Install native-image with the help of GraalVM Updater utility gu:

/opt/graalvm-ce-java11-21.0.0.2/bin/gu install native-image

Check the result:

/opt/graalvm-ce-java11-21.0.0.2/bin/gu list

Command output:

ComponentId              Version             Component name                Stability           Origin 
--------------------------------------------------------------------------------------------------------
js                       21.0.0.2            Graal.js                      -                   
graalvm                  21.0.0.2            GraalVM Core                  -                   
native-image             21.0.0.2            Native Image                  Early adopter       github.com

5. Change your location to your Clojure application:

cd ~/src/jubei

6. Build you Clojure project with lein:

lein native-image

Usage

Run your application:

target/default/jubei

Reference

Bandit Boss: [after Jubei defeats a trio of bandits]
             Then, it's true! They hired you for 
             only 20 pieces of gold, Jubei?

      Jubei: Yeah.

Bandit Boss: But the sword we stole was a precious 
             treasure given by the Shogun! 
             And they're paying you only 20 pieces
             of gold for getting it back for them?
             [laughs]
             You fool!

      Jubei: They're a poor, small clan. You can't 
             swindle 300 pieces of gold for a sword. 
             You're asking too much - you're the fool!

Bandit Boss: Shut up! Damn you!

      Jubei: [finishes his rice ball, notices the weather]
             Looks like a storm is brewing here.
             I better get movin'!