Molecule AI Dev Engineer A (Kimi)
46ecc67530
The drift gate now fetches core's contract at the same ref as the current PR first, falls back to main, and soft-skips on bootstrap 404. This proves byte-identity against the paired branch before merge. Co-Authored-By: Claude <noreply@anthropic.com>
121 lines
5.0 KiB
YAML
121 lines
5.0 KiB
YAML
name: mcp-plugin-delivery-contract-drift
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# Cross-repo drift gate for the MCP-plugin delivery contract (core#3080).
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#
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# The contract file contracts/mcp-plugin-delivery.contract.json is the SSOT
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# shared between molecule-core (producer side) and this template repo
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# (consumer side). This workflow fetches core's copy via the Gitea raw
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# endpoint and byte-compares it against the template's local copy. RED if they
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# differ — the two repos must stay byte-identical so the drift gate and
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# runtime agree on the same contract.
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#
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# ENFORCEMENT GATING: standalone workflow, NOT a job in ci.yml and NOT in
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# branch protection (soak-then-promote; mirrors molecule-core's
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# mcp-plugin-delivery-contract-drift.yml).
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#
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# AUTH: uses AUTO_SYNC_TOKEN (the existing cross-repo read token). If the
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# secret is absent on a trusted context the job fails closed; on untrusted
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# fork PRs it soft-skips.
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on:
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pull_request:
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types: [opened, synchronize, reopened]
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paths:
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- 'contracts/mcp-plugin-delivery.contract.json'
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- '.gitea/workflows/mcp-plugin-delivery-contract-drift.yml'
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push:
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branches: [main]
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paths:
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- 'contracts/mcp-plugin-delivery.contract.json'
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- '.gitea/workflows/mcp-plugin-delivery-contract-drift.yml'
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schedule:
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# Daily at :37 — catch a core-side contract change that landed without a
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# paired template re-sync PR (off-zero to spread cron load).
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- cron: '37 4 * * *'
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workflow_dispatch:
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permissions:
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contents: read
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concurrency:
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group: mcp-plugin-delivery-contract-drift-${{ github.ref }}
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cancel-in-progress: true
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jobs:
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# bp-required: pending #3080 — soak-then-promote; standalone drift gate, not in branch protection yet.
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compare:
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name: Compare MCP plugin delivery contract against core canonical
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runs-on: ubuntu-latest
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timeout-minutes: 6
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steps:
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- uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
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- name: Fetch core contract and byte-compare
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env:
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AUTO_SYNC_TOKEN: ${{ secrets.AUTO_SYNC_TOKEN }}
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API_ROOT: ${{ github.server_url }}/api/v1
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run: |
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set -euo pipefail
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case "${{ github.event_name }}" in
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push|schedule|workflow_dispatch)
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is_trusted=true
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;;
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pull_request)
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if [ "${{ github.event.pull_request.head.repo.fork }}" = "false" ]; then
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is_trusted=true
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else
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is_trusted=false
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fi
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;;
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*)
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is_trusted=true
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;;
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esac
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if [ -z "${AUTO_SYNC_TOKEN:-}" ]; then
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if [ "$is_trusted" = "true" ]; then
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echo "::error::AUTO_SYNC_TOKEN secret missing on trusted context (${{ github.event_name }}). Live cross-repo contract-drift detection cannot run."
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exit 1
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fi
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echo "::warning::AUTO_SYNC_TOKEN secret missing on untrusted fork PR — skipping live cross-repo compare."
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exit 0
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fi
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REF="${{ github.head_ref || github.ref_name }}"
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CANON_URL="${API_ROOT}/repos/molecule-ai/molecule-core/raw/contracts/mcp-plugin-delivery.contract.json?ref=${REF}"
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set +e
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curl -fsS \
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-H "Authorization: token ${AUTO_SYNC_TOKEN}" \
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"${CANON_URL}" -o /tmp/canonical-mcp-plugin-delivery.contract.json
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curl_status=$?
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set -e
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if [ "$curl_status" -ne 0 ]; then
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if [ "$curl_status" -eq 22 ]; then
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echo "::warning::Canonical contract not found on core ref ${REF} (HTTP 404); falling back to main."
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CANON_URL="${API_ROOT}/repos/molecule-ai/molecule-core/raw/contracts/mcp-plugin-delivery.contract.json?ref=main"
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set +e
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curl -fsS \
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-H "Authorization: token ${AUTO_SYNC_TOKEN}" \
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"${CANON_URL}" -o /tmp/canonical-mcp-plugin-delivery.contract.json
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curl_status=$?
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set -e
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if [ "$curl_status" -eq 22 ]; then
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echo "::warning::Canonical contract not found on core main either (HTTP 404) — expected during bootstrap. Skipping drift check."
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exit 0
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fi
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if [ "$curl_status" -ne 0 ]; then
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echo "::error::Failed to fetch canonical contract from core main (exit $curl_status)."
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exit 1
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fi
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else
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echo "::error::Failed to fetch canonical contract (exit $curl_status)."
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exit 1
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fi
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fi
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LOCAL=contracts/mcp-plugin-delivery.contract.json
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if diff -u /tmp/canonical-mcp-plugin-delivery.contract.json "$LOCAL"; then
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echo "OK — template's contract is byte-identical to the core canonical."
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else
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echo "::error::template's mcp-plugin-delivery.contract.json DRIFTED from the core canonical."
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echo "Re-sync: copy molecule-core contracts/mcp-plugin-delivery.contract.json verbatim over $LOCAL."
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exit 1
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fi
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