# Semantic-conventions gate: validates `semconv/registry/` with OpenTelemetry
# weaver and verifies the generated constants module
# (`v2/crates/wifi-densepose-sensing-server/src/semconv.rs`) is in sync with
# it (`weaver registry generate` + a no-diff check) — keeping RuView's
# telemetry names spec-adherent and drift-free.
name: semconv

on:
  push:
    branches: [ main, develop ]
    paths:
      - 'semconv/**'
      - 'templates/**'
      - 'v2/crates/wifi-densepose-sensing-server/src/semconv.rs'
      - '.github/workflows/semconv.yml'
  pull_request:
    paths:
      - 'semconv/**'
      - 'templates/**'
      - 'v2/crates/wifi-densepose-sensing-server/src/semconv.rs'
      - '.github/workflows/semconv.yml'
  workflow_dispatch:

jobs:
  semconv:
    name: semconv (weaver)
    runs-on: ubuntu-latest
    env:
      WEAVER_VERSION: v0.23.0
      # sha256 of weaver-x86_64-unknown-linux-gnu.tar.xz for WEAVER_VERSION
      # (open-telemetry/weaver release asset). Bump both together.
      WEAVER_SHA256: a9822c712d6871bd89d6530f18c5df5cea3821f642e7b8e5e49e985917f7d12d
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          persist-credentials: false
      - uses: dtolnay/rust-toolchain@stable
        with:
          components: rustfmt
      - name: Install weaver
        run: |
          set -euo pipefail
          tarball="weaver-x86_64-unknown-linux-gnu.tar.xz"
          curl -fsSL -o "$RUNNER_TEMP/$tarball" \
            "https://github.com/open-telemetry/weaver/releases/download/${WEAVER_VERSION}/${tarball}"
          echo "${WEAVER_SHA256}  $RUNNER_TEMP/$tarball" | sha256sum -c -
          tar xJf "$RUNNER_TEMP/$tarball" -C "$RUNNER_TEMP"
          echo "$RUNNER_TEMP/weaver-x86_64-unknown-linux-gnu" >> "$GITHUB_PATH"
      - run: weaver registry check -r semconv/registry --future
      # Codegen no-diff: regenerate the semconv constants module from the
      # registry and fail if the checked-in file drifts (the generated
      # module is "do not hand-edit"; the registry is the source).
      - name: Regenerate semconv constants
        run: |
          set -euo pipefail
          weaver registry generate rust v2/crates/wifi-densepose-sensing-server/src \
            -t templates -r semconv/registry --future
          rustfmt --edition 2021 v2/crates/wifi-densepose-sensing-server/src/semconv.rs
      - name: Verify generated constants are in sync
        run: |
          set -euo pipefail
          changes="$(git status --porcelain -- v2/crates/wifi-densepose-sensing-server/src/semconv.rs)"
          if [ -n "$changes" ]; then
            echo "::error::semconv.rs is out of sync with semconv/registry/. Regenerate (see the module header) and commit."
            echo "$changes"
            git diff -- v2/crates/wifi-densepose-sensing-server/src/semconv.rs
            exit 1
          fi