This is now hosted at https://run.mccue.dev
This allows you to experiment with Java before you install it locally, or in any other case where you might not have the compiler available.
It has a number of features, including:
- A nice, unobtrusive editor with syntax highlighting.
- The ability to run against the latest stable, early access, and valhalla prototype JDKs.
- A selection of libraries from Maven Central.
- The ability to quickly load and save your code to a GitHub Gist and share it with your friends.
A React frontend communicates with an Axum backend. Docker containers are used to provide the various compilers and tools as well as to help isolate them.
We hope that this frontend and backend stack is comfortable to potential contributors! If you are interested in contributing, please feel free to ask a question and we might even be able to point out some useful resources.
There is no network connection between the compiler container and the outside world.
The amount of memory the compiler and resulting executable use is limited by the container.
The total compilation and execution time is limited by the container.
This sandbox does not provide any disk space limits. It is suggested to run the server such that the temp directory is a space-limited. One bad actor may fill up this shared space, but it should be cleaned when that request ends.
A large set of thanks go to those individuals who have helped by reporting security holes or other attack vectors against the site. Each report helps us make the site better!
- Preliminary sandbox testing (PID limit) by Stefan O'Rear.
If you'd like to perform tests that you think might disrupt service of the site, get in touch and we can create an isolated clone to perform tests on! Once fixed, you can choose to be credited here.
cd ui/frontend
yarn
yarn run watch # Will rebuild and watch for changes
If you don't need the backend running because you are only making
basic HTML/CSS/JS changes, directly open in your browser the built
ui/frontend/build/index.html.
cd ui
cargo run
There are some optional configuration parameters described in the
ui README which you may set in a .env file. The server will
run with no configuration, but in order to load and save gists a GitHub token
must be configured.
cd compiler
./build.sh # If you want to test changes to the containers
./fetch.sh # If you just want the current site
Licensed under either of
- Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT) at your option.