weather: start D-WXS-4 with streaming canonical W1 bake seam - #955
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Reviews should be triggered manually for repositories with fewer than 10 stars. Select Trigger review above or comment ⚙️ Run configurationConfiguration used: Organization UI Review profile: CHILL Plan: Pro Plus Run ID: 📝 WalkthroughWalkthroughThe PR adds streaming W1 weather-cell packing, optional canonical ChangesWeather codec
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: 🟡 Moderate · up to The PR adds a CI workflow that can expose its read-only repository token to pull-request code, and its row-serialization tests may not independently detect incorrect canonical layouts. Merge should wait for credential hardening and stronger validation of serialization, streaming, and toolchain-trigger behavior. Sequence Diagram(s)sequenceDiagram
participant bake_timestep_to_writer
participant assemble_row
participant Writer
bake_timestep_to_writer->>assemble_row: convert each PackedWeatherCell
assemble_row-->>bake_timestep_to_writer: NodeRow or validation error
bake_timestep_to_writer->>Writer: write exact NodeRow bytes
Writer-->>bake_timestep_to_writer: success or I/O error
Possibly related PRs
Suggested reviewers: Poem
🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches📝 Generate docstrings
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In @.github/workflows/weather-poc.yml:
- Around line 3-15: Update the paths filters in the weather-poc workflow’s
pull_request trigger to include the relevant root Rust toolchain file paths,
rust-toolchain and rust-toolchain.toml, while preserving the existing crate and
workflow path entries.
- Line 29: Update the actions/checkout@v4 step to set persist-credentials to
false, preventing the GITHUB_TOKEN from being stored in the repository’s Git
configuration while preserving the existing checkout behavior.
In `@crates/weather-poc/src/bake.rs`:
- Around line 362-388: Update
sink_failure_stops_the_stream_without_building_a_global_vec to count value_of
calls in the fixture, and assert exactly 9 calls when the third cell returns the
sink error, since each cell resolves three manifest entries. Keep the existing
seen and BakeStreamError::Sink assertions.
In `@crates/weather-poc/src/canonical.rs`:
- Around line 247-286: Strengthen the canonical serialization tests by using an
independent expected-layout oracle instead of helpers derived from assemble_row
or row_bytes. In live_contract_places_weather_after_every_named_tenant and
canonical_serialization_is_exactly_512_bytes_and_key_agrees, define explicit
tenant/weather offsets and expected 512-byte contents, including non-zero edge
bytes; alternatively compare against NodeRowPacket::as_le_bytes().
In `@crates/weather-poc/src/lib.rs`:
- Around line 17-20: Update the crate-level documentation near the timestep
description to replace the unresolved intra-doc link to canonical with a plain
code span, while preserving the surrounding feature-gated behavior description.
🪄 Autofix
Fix all unresolved CodeRabbit comments on this PR:
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ℹ️ Review info
⚙️ Run configuration
Configuration used: Organization UI
Review profile: CHILL
Plan: Pro Plus
Run ID: afa05889-cd11-4f58-aa20-87d31b0013ca
📒 Files selected for processing (6)
.github/workflows/rust-test.yml.github/workflows/weather-poc.ymlcrates/weather-poc/Cargo.tomlcrates/weather-poc/src/bake.rscrates/weather-poc/src/canonical.rscrates/weather-poc/src/lib.rs
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Product decision
Implements the first missing construction from the canonical weather product surface instead of creating another roadmap.
SUBSTRATE_FORMULA_MATRIX.mdsays the codec pieces exist and D-WXS-4 is the unwritten bake. This PR starts that bake at the ownership boundary that prevents contract drift.What lands
weather-poc::bakeVec0x0000_0000encode_key's debug-only preconditioncanonical-rowbridgelance-graph-contractVALUE_TENANTS, never copies today's offsetweather-pockey encoding against realNodeGuidNodeRows without unsafe castsbake_timestep_to_writerfor the existing Lance publication pathcanonical-rowpathsDeliberate scope
This does not freeze all 122 ERA5 fields. W1 remains the measured 22-field / 3-facet reservation from
weather-soa-bake-v1.md.It also does not invent a second Lance version writer. The canonical adapter produces exact 512-byte rows for the existing publication seam. Atomic one-version publication and real Zarr source wiring remain the next D-WXS-4 slice after this row seam is green.
Classid decision, corrected after reading current OGAR authority
The first draft proposed extending
0x0FGeo. That was wrong: current OGAR defines0x0FXXspecifically as the OpenStreetMap geodata reference domain and reserves ClassView0x0008for OSM. The same authority explicitly leaves0x04XX–0x06XXunassigned.Autonomous allocation for the weather integration is therefore:
0x04XX= Weather / Atmosphereweather_cell=0x0401weather_static_cell=0x04020x0009(next after OSM0x0008)0x0401_00090x0402_0009This preserves OGAR's canon-high/custom-low rule: high u16 is shared meaning, low u16 is the app/ClassView render lens. Production weather writes continue to fail closed until OGAR carries that allocation.
Gates
CI executes both:
No performance claim is made by this PR. The operator-reported 64k SoA path (~125 ms compute / ~233 ms parallel write) remains a prior; the ~1M HHTL/helix ~8 s figure remains an estimate. Full-grid weather timing will split source/decode, quantise, row assembly, write, overlap and read-back.
Summary by CodeRabbit
New Features
Tests