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@NexusVaultllc NexusVaultllc released this 15 Oct 00:52
· 4 commits to main since this release
v0.2.0
dcfee3a

[0.2.0] - 2026-10-14

Added

  • Compressed chunks. zstd and lz4 chunks are decoded, with output strictly capped at the declared uncompressed size, so decompression bombs fail safely.
  • Streaming reader (tracecheck.reader): a self-contained, bounded MCAP parser. SHA-256 and CRCs are computed in a single pass, and memory is bounded by explicit limits. The 64 MiB file-size cap is gone.
  • Fast mode (--fast): reads only the summary section for an instant inventory, counts, schemas and metadata check. It falls back to a full scan when the summary is missing or incomplete.
  • missing_crc contract key ("warn" or "ignore") and the --ignore-missing-crc flag.
  • Summary-section CRC verification.
  • CLI flags: --fail-on, --timeout, --max-chunk-mib, --max-record-mib, --max-tracked-messages, --quiet, --version, and samples --dest.
  • Report fields (report_version 2): scan_mode, fast_mode_fallback, compression, scan_stats, checksum_coverage.
  • More synthetic examples: zstd, lz4, unchunked, no-CRC, unsupported-codec, malformed and truncated files, plus a 4-topic mobile-robot recording with and without a sensor dropout. examples/expected.json holds the golden results shared by the Python and browser test suites.
  • Web app (web/): a browser-only static site for backplanerobotics.com with the Tracecheck app.
    • A JavaScript port of the engine running in a Web Worker. Files never leave the browser.
    • Handles multi-GB files and zstd/lz4 chunks.
    • Demo recordings, a contract editor, and JSON/HTML report downloads.
    • Reports are byte-identical to the Python CLI's, apart from timestamps and tool fields.
    • A strict Content-Security-Policy.

Changed

  • Renamed the project from "Recording Health Checker" to Backplane Tracecheck.
    • The Python package rhc is now tracecheck.
    • The PyPI distribution is backplane-tracecheck.
    • The CLI command is tracecheck.
  • tracecheck check runs in-process, with no subprocess and no size cap. The local serve UI keeps its 64 MiB upload limit.
  • Missing-CRC rule. C01 now warns only when some message data has no CRC coverage. Default ROS 2 files, which have chunk CRCs but no data-section CRC, now pass.
  • Packaged with pyproject.toml (hatchling), replacing requirements*.txt and the Windows .cmd launchers.
  • Relicensed as Apache-2.0 open source.

Fixed

  • The local server no longer returns stderr text or the user's home path in error responses.
  • The local server now requires a matching Origin header on POST requests.

Removed

  • MVP governance, evidence, QA and marketing files were moved out of the repository into a local archive.
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