Brummel
d5602ec5ad
C24 first cut (#155): a blueprint — the param-generic, named graph-as-data a Rust builder produces — is now a first-class serializable data value with a canonical, versioned format, and the engine has the missing load path (data -> blueprint -> FlatGraph), not only the Rust-builder construction path. What ships: - `blueprint_to_json` / `blueprint_from_json` in a new `aura-engine` blueprint_serde module: a faithful serde DTO projection (the build closures dropped; re-derived on load), top-level `format_version` envelope, canonical compact JSON (struct field order, defaults omitted via skip_serializing_if). - A resolver seam: the loader is generic over an injected `Fn(&str) -> Option<PrimitiveBuilder>`; the concrete closed `match` over the aura-std vocabulary lives in aura-std (`std_vocabulary`), never in the engine (the engine stays domain-free: lib deps aura-core + aura-analysis only, never the node-vocabulary crate). This is C24's compiled-in closed-set referenced by type identity, NOT a dynamic/marketplace node registry (domain invariant 9). - serde derives on the serialized plain types (Edge, Target, OutField, Role, BoundParam, ScalarKind); BoundParam additionally re-exported from aura-core's root (an additive fix the plan's file list missed). Load-bearing scope decisions (derived, logged on #155): - Sinks are excluded from the serialized blueprint — a recording sink captures an mpsc::Sender (runtime identity, not param/topology, C19 value-empty); sink addressing is the C18-registry / #101 concern. The round-trip test attaches identical sinks post-load to both twins. - Construction-arg builders (LinComb(arity), CostSum(n), SimBroker(pip), Session(..)) are out of the round-trippable set: their structural args are a C20 structural-axis concern the param-generic format does not yet encode; an absent type_id fails the load cleanly (UnknownNodeType), never a silent wrong graph. #155's vocabulary is the 22 zero-arg aura-std builders. Additively extensible later (#156). Orchestrator hardening on review: the serializer now emits bound params in ascending original-slot order (mirroring the loader), so the canonical form is bind-order-independent — a precondition for content-addressing (#158). Identity today (every #155 node has <=1 param); holds by construction for future multi-param nodes. Acceptance (all green): a serialized blueprint runs bit-identical (C1) to its Rust-built twin; serializer/loader are inverse (canonical idempotence, incl. a recursive nested composite); unknown-type and unsupported-version fail named, never panicking. cargo test --workspace 748 passed; clippy --all-targets -D warnings clean. closes #155
51 lines
1.8 KiB
Rust
51 lines
1.8 KiB
Rust
//! `aura-core` — the shared contract every aura component links against.
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//!
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//! This crate is the boundary forced by the cdylib hot-reload model: both the
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//! engine and every hot-reloadable node cdylib depend on it, so it stays small
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//! and stable.
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//!
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//! Delivered so far (cycle 0001 — the streaming substrate):
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//!
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//! - the four scalar base types streamed as SoA: [`Scalar`] / [`ScalarKind`] /
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//! [`Timestamp`] (C7);
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//! - [`Column`] — a fixed-capacity, bounded-lookback ring with financial
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//! indexing (index 0 = newest) and a `run_count` freshness primitive (C5/C8),
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//! read zero-copy through a [`Window`];
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//! - [`AnyColumn`] — the type-erased edge over the four column kinds, with an
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//! edge-time kind check ([`KindMismatch`]) (C7).
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//!
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//! Delivered in cycle 0002 — the node contract:
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//!
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//! - [`Node`] — the `lookbacks`/`eval` contract every node implements (C8); the
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//! static signature ([`NodeSchema`] / [`PortSpec`] declaring input ports by kind
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//! and the output record of [`FieldSpec`] columns; length 1 = scalar) is declared
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//! on the node's [`PrimitiveBuilder`], pre-build;
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//! - [`Ctx`] — the per-`eval` read-side: zero-copy, financial-indexed [`Window`]
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//! access into each input (closing the cycle-0001 read-side gap on
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//! [`AnyColumn`]).
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//!
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//! Still to come (subsequent cycles): the broker-independent
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//! position-event output and downstream broker nodes (C10), and the run registry
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//! (C18/C22).
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mod any;
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mod cell;
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mod column;
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mod ctx;
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mod error;
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mod node;
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mod scalar;
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mod series_fold;
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pub use any::AnyColumn;
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pub use cell::Cell;
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pub use column::{Column, Window};
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pub use ctx::Ctx;
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pub use error::KindMismatch;
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pub use node::{
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zip_params, BoundParam, FieldSpec, Firing, Node, NodeSchema, ParamSpec, PortSpec,
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PrimitiveBuilder,
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};
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pub use scalar::{Scalar, ScalarKind, Timestamp};
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pub use series_fold::SeriesFold;
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