pgrx is a framework for building and packaging custom PostgreSQL extensions using Rust. It serves as a foreign function interface bridge that maps Rust types and functions to the internal server programming interface of the database.
The project provides a specialized toolchain for cross-compilation across different operating systems and target architectures using custom sysroots. It includes a schema generator that automatically translates high-level language structures into SQL definitions and binary protocol mappings.
The framework manages memory safety by wrapping database memory contexts and translating runtime panics into database-level errors to prevent server crashes. It further supports the definition of custom native database types and the implementation of functions and triggers.
A command line interface is provided to manage the extension lifecycle, including building, testing, and packaging across multiple database versions.
