Clojure meets GraalVM

This project contains a set of "hello world" projects to verify which Clojure libraries do actually compile and produce native images under GraalVM.

Here the instructions on how to build your own Clojure projects with GraalVM.

• Download a GraalVM
• Build a "Hello world!" project

Here the list of libraries tested:

Status	Library	Description	Remarks
✅	Clojure core	Clojure core
✅	clojure spec	Clojure Spec
✅	clojure/tools.logging	Logging library
✅	clojure/tools.logging+log4j	Logging library
✅	aleph	Web server
✅	amazonica+s3	Cloud API wrapper library
✅	cheshire	JSON parser/writer
✅	clj-http-lite	Web client
❌	clj-sophia	A fast RAM-Disk hybrid storage	Runtime error/JNA
✅	clj-uuid	RFC4122 Unique Identifiers for Clojure	No objects in namespaced uuids
✅	clostache	{{ mustache }} for Clojure
❌	cognitect/aws-api+s3	Cloud API library	Buildtime error
✅	component	Managing lifecycle and dependencies of software
✅	datascript	Immutable database and Datalog query engine
⚠️	fastmath	Fast and primitive math and stats library	See README
✅	hiccup	Fast library for rendering HTML in Clojure
✅	http-kit	Web server	Web client ❌
❌	monger	An idiomatic Clojure MongoDB driver with sane defaults
✅	next.jdbc + honeysql	Database driver and SQL-in-Clojure
⚠️	nippy	Clojure serialization/deserialization library	Can't serialize exceptions
✅	ring/jetty	Web server
✅	safely	Circuit breaker
✅	secure-random	SecureRandom initialization
❌	system	Layer on top of components	Buildtime error, see Readme

More libraries to come (PRs are welcome).

Interesting GraalVM documentation to build native-images:

• Understand Class Initialization in Native Image
• Assisted Configuration of Native Image Builds
• URL Protocols on Substrate VM for http and https
• JCA Security Services on Substrate VM

How to contribute

If you wish to add a library and contribute with a PR please follow these steps:

1. Fork the project
2. use the sample-project as a template. cp -r sample-project my-library
3. add the library to the project.clj and the native-image parameters used
4. amend the my-library/src/simple/main.clj to use the library
5. amend the my-library/README.md with the info you discovered.
6. Make a PR with your findings and "Thank you" in advance.

License

Copyright © 2019-2020 Bruno Bonacci

Distributed under the Apache License v 2.0 (http://www.apache.org/licenses/LICENSE-2.0)