octoturge
7505e759e1
Adds bambulab/v1 and bambulab/v2 to the prost-build pipeline, scoped
separately from continuum.v1's camelCase convention: bambulab.* uses
snake_case, matching Bambu's actual MQTT wire JSON exactly, since this is
edge-only traffic (continuum-proxy) that has to match the printer's real
format rather than a schema we get to design.
Verified the scoping doesn't collide: type_attribute calls are cumulative,
so the existing '.' blanket selector had to become '.continuum' specifically
- keeping it global would stack a second, conflicting #[serde(rename_all)]
onto every bambulab type too and fail to compile.
No message bodies added - proto/bambulab/{common,v1/*,v2/*}.proto are
intentionally just syntax+package+guidance comments (matching what was
already started for v1). build.rs has inline notes on the two real gotchas
already hit while prototyping this: the field_attribute path-matching
oneof/variant collision (solution: hand-write the envelope enum in Rust
instead of modeling it as a proto oneof), and serde needing #[serde(default)]
on fields that aren't always present.
66 lines
3.1 KiB
Rust
66 lines
3.1 KiB
Rust
use std::path::PathBuf;
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fn main() {
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let proto_root = PathBuf::from(env!("CARGO_MANIFEST_DIR"))
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.join("../../proto")
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.canonicalize()
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.expect("proto root must exist");
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let proto_files = [
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proto_root.join("continuum/v1/material.proto"),
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proto_root.join("continuum/v1/print_params.proto"),
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proto_root.join("continuum/v1/template.proto"),
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proto_root.join("continuum/v1/print_job.proto"),
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proto_root.join("bambulab/common.proto"),
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proto_root.join("bambulab/v1/request.proto"),
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proto_root.join("bambulab/v1/report.proto"),
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proto_root.join("bambulab/v2/request.proto"),
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proto_root.join("bambulab/v2/report.proto"),
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];
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for file in &proto_files {
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println!("cargo:rerun-if-changed={}", file.display());
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}
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let mut config = prost_build::Config::new();
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// continuum.v1 — Continuum's own cross-service API. camelCase to match
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// the TS side's existing convention (this is a schema we designed
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// ourselves, so we get to pick the convention).
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config.type_attribute(".continuum", "#[derive(serde::Serialize, serde::Deserialize)]");
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config.type_attribute(".continuum", "#[serde(rename_all = \"camelCase\")]");
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// bambulab.* — mirrors Bambu's actual MQTT wire JSON exactly
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// (snake_case), because this isn't a schema we get to design: it's
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// edge-only traffic (continuum-proxy only, never crosses into TS) that
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// has to match whatever the printer actually sends, byte for byte.
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//
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// IMPORTANT: these two type_attribute calls are scoped to ".bambulab"
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// specifically, not "." (global) — type_attribute calls are cumulative,
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// so a "." blanket rule here would stack a second, conflicting
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// #[serde(rename_all = ...)] onto every bambulab type alongside this
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// one and fail to compile. Verified: see commit history for this file.
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config.type_attribute(".bambulab", "#[derive(serde::Serialize, serde::Deserialize)]");
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config.type_attribute(".bambulab", "#[serde(rename_all = \"snake_case\")]");
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// Some Bambu response fields aren't always present (e.g. `result`/
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// `reason` on some info responses) — serde requires every struct field
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// present in the JSON unless told otherwise. Add one line per such
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// field as you find them, e.g.:
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// config.field_attribute(".bambulab.v1.InfoResponse.result", "#[serde(default)]");
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//
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// Do NOT try to model the top-level {"info": {...}} / {"pushing": {...}}
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// envelope as a proto `oneof` here — prost-build's field/variant
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// attribute matching can't distinguish "the oneof field" from "the
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// variants inside it" (both match the same path prefix), so
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// `#[serde(flatten)]` lands in the wrong place and won't compile. Write
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// the envelope as a plain Rust enum instead, in continuum-proxy —
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// serde's default enum representation already produces exactly
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// {"info": {...}} with no configuration at all. See
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// continuum-proxy/src/printer/bambu_protocol.rs.
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config
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.compile_protos(&proto_files, &[proto_root])
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.expect("failed to compile continuum .proto sources");
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}
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