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Changelog

All notable changes to aimdb-codegen will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[Unreleased]

Added

  • Issue #177 - generated postcard records now have a true into-slice codec. Their Linkable implementation advertises a 256-byte reusable scratch capacity and overrides encode_into with postcard::to_slice; generated outbound connector chains install with_serializer_into. Values that exceed the scratch capacity retain the existing postcard::to_allocvec fallback. Host behavior, generated connector wiring, no_std Cortex-M compilation and the JSON-free dependency graph are covered by make codegen-drift.
  • Postcard codegen is now exercised end to end by make codegen-drift: a generated Postcard-only common crate roundtrips on the host, cross-compiles for thumbv7em-none-eabihf, and proves its normal dependency graph is JSON-free. A generated mixed JSON + Postcard crate is also compiled so codec feature/dependency drift fails in CI (#155).

Fixed

  • Generated Cargo.toml for manifests mixing serialization = "json" and serialization = "postcard" records omitted the serde_json dependency (postcard presence suppressed it), so the generated crate failed to compile under the std feature. serde_json is now emitted whenever any record uses JSON serialization, independent of postcard (#155).

Changed (breaking)

  • Emitted task scaffolds now use Producer<T> / Consumer<T> (no , TokioAdapter second parameter) and emitted doc tables show the same form, matching the M14 cleanup in aimdb-core (Design 029). Regenerate downstream scaffolds after upgrading.
  • Emitted configure_schema signature changed from <R: Spawn + 'static> to <R: RuntimeAdapter + 'static>; emitted prelude now imports aimdb_executor::RuntimeAdapter instead of Spawn (Issue #88). Regenerate downstream schemas.

[0.2.0] - 2026-05-22

Changed

  • Generated join handler stubs updated to match the new task-model on_triggers API (Design 027). Multi-input task handlers are now generated as:

    pub async fn task_handler(
    mut _rx: aimdb_core::transform::JoinEventRx,
    _producer: aimdb_core::Producer<Output, TokioAdapter>,
) {
    while let Ok(_trigger) = _rx.recv().await {
        todo!("implement task_handler")
    }
}

    Previously generated fn task_handler(JoinTrigger, &mut (), &Producer<...>) -> Pin<Box<dyn Future>> for the callback model.

  • build_transform_call for join tasks now emits .on_triggers(handler) instead of .with_state(()).on_trigger(handler).

[0.1.0] - 2026-03-11

Added

  • Initial release of the AimDB code generation library
  • ArchitectureState type for reading .aimdb/state.toml decision records
  • Mermaid diagram generation from architecture state (generate_mermaid)
  • Rust source generation from architecture state (generate_rust)
    • Value structs, key enums, SchemaType/Linkable implementations
    • configure_schema() function scaffolding
    • Common crate, hub crate, and binary crate generation
  • State validation module for architecture integrity checks (validate)
  • TOML serialization/deserialization of architecture state