The extism-convert crate is used by the Rust SDK and Rust PDK to provide a shared interface for encoding and decoding values that can be passed to Extism function calls.

A set of types (Json, Msgpack) that can be used to specify a serde encoding are also provided. These are similar to axum extractors - they are implemented as a tuple struct with a single field that is meant to be extracted using pattern matching.

extism-convert

The extism-convert crate is used by the Rust SDK and Rust PDK to provide a shared interface for encoding and decoding values that can be passed to Extism function calls.

A set of types (Json, Msgpack, Protobuf) that can be used to specify a serde encoding are also provided. These are similar to axum extractors - they are implemented as a tuple struct with a single field that is meant to be extracted using pattern matching.

Documentation

See extism-convert on docs.rs for in-depth documentation.