janini: A Simple and Lightweight Java Script Runner Server

Currently deployed at https://cs125.cs.illinois.edu/janini/.

TODO

• Support other Janino execution modes through submission flags, including class body and simple compilers.
• Try to integrate a standard Java in-memory compiler to avoid some of Janino's syntax limitations, maybe along the lines of this tool. Benchmark to compare with Janino and potentially remove Janino entirely if performance is similar.
• Containerize for broader deployment.
• Complete a more comprehensive test suite, including attacks and errors to check robustness.
• If insufficiently robust, figure out a way to easily restart the server if and when it crashes.
• Performance testing using artillery.io.