# Copyright 2024 RustFS Team
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# MinIO on-disk interop: prove RustFS reads MinIO-written erasure-coded SSE
# objects with byte-identical data and correct logical size.
#
# This is NOT a PR gate. The fixtures are real MinIO backend trees generated on
# the fly (they are gitignored, never committed), so the job regenerates them
# each run with Docker and then runs the `#[ignore]` reader tests in
# rustfs/src/storage/minio_generated_read_test.rs.
#
# Scope: end-to-end MinIO-to-RustFS SSE interop is NOT implemented yet. Both
# envelope parsers reject MinIO's own wrapped-DEK shape — see
# `is_data_key_envelope` in crates/kms/src/encryption/dek.rs and the
# `deny_unknown_fields` `LocalSseDekEnvelope` in rustfs/src/storage/sse.rs — and
# closing that gap is tracked in rustfs/backlog#1638. Treat this job as the
# harness for #1638, not as standing evidence that a MinIO migration reads back.
#
# Runner: GitHub-hosted `ubuntu-latest`. It reliably ships Docker + Python,
# unlike the self-hosted fleet, whose pods drift in Docker/pip availability
# (see the infra note in e2e-s3tests.yml). Nightly + manual only.
# DISABLED. This workflow is switched off in the repository's Actions settings
# (state: disabled_manually) and does not run on any trigger, including its cron
# and workflow_dispatch. That state lives in GitHub's UI and is invisible when
# reading this file, which has already misled at least one audit — hence this
# banner. Re-enabling is a UI action; anyone doing so should first check that the
# workflow still matches the current CI layout. See rustfs/backlog#1603.
#
name: minio-interop

on:
  workflow_dispatch:
  schedule:
    # Nightly at 03:17 UTC (offset from other nightly jobs).
    - cron: "17 3 * * *"

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

permissions:
  contents: read

jobs:
  minio-interop:
    name: MinIO interop (EC + SSE read parity)
    # Skip on forks: needs the repo's runners and is not a contributor gate.
    if: github.repository == 'rustfs/rustfs'
    runs-on: ubuntu-latest
    timeout-minutes: 40
    env:
      # Fixed 32-byte test KMS key baked into the fixture lab; not a secret.
      RUSTFS_MINIO_STATIC_KMS_KEY_B64: IyqsU3kMFloCNup4BsZtf/rmfHVcTgznO2F25CkEH1g=
      # Single definition of "the interop tests", shared by the guard step and
      # the run step so the two cannot drift apart.
      #
      # These used to live in crates/ecstore/tests/minio_generated_read_test.rs
      # and were selected with `-p rustfs-ecstore -E
      # 'binary(minio_generated_read_test)'`. #5435 moved them into the `rustfs`
      # crate as a `#[cfg(test)] mod`, which deleted that test binary; the
      # selector was never updated and has selected zero interop tests ever
      # since (cargo-nextest 0.9.140 now rejects it outright: "operator didn't
      # match any binary names", exit 94).
      INTEROP_PACKAGE: rustfs
      INTEROP_FEATURES: rio-v2
      INTEROP_FILTER: "test(minio_generated_read_test::)"
    steps:
      - name: Checkout repository
        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
        with:
          persist-credentials: false

      - name: Setup Rust environment
        uses: ./.github/actions/setup
        with:
          rust-version: stable
          cache-shared-key: ci-minio-interop
          cache-save-if: ${{ github.ref == 'refs/heads/main' }}

      - name: Generate real MinIO fixtures via Docker
        run: bash crates/rio-v2/tests/minio_fixture_lab/capture_via_docker.sh

      # `binary(...)` at least dies loudly when nothing matches, but `test(...)`
      # is a perfectly valid filterset that matches zero tests, so the next
      # rename or module move would leave this job selecting nothing and
      # reporting success without executing a single interop assertion. Count
      # the selection and fail with a reason instead.
      #
      # Count only `filter-match.status == "matches"`: the top-level
      # `test-count` in the JSON is the package total and ignores `-E` entirely.
      - name: Assert the interop selector still matches tests
        run: |
          set -euo pipefail
          count="$(cargo nextest list --run-ignored all \
            -p "$INTEROP_PACKAGE" --features "$INTEROP_FEATURES" \
            -E "$INTEROP_FILTER" --message-format json \
            | python3 -c 'import json,sys; d=json.load(sys.stdin); print(sum(1 for s in d.get("rust-suites", {}).values() for t in s.get("testcases", {}).values() if t.get("filter-match", {}).get("status") == "matches"))')"
          echo "interop tests selected: ${count}"
          if [ "${count}" -eq 0 ]; then
            echo "::error::Selector '${INTEROP_FILTER}' in package '${INTEROP_PACKAGE}' matched 0 tests. The MinIO interop reader tests have moved or been renamed again; fix the selector instead of letting this job pass without running them. Context: rustfs/backlog#1638."
            exit 1
          fi

      - name: Run MinIO interop reader tests
        run: |
          cargo nextest run --run-ignored ignored-only --no-tests=fail \
            -p "$INTEROP_PACKAGE" --features "$INTEROP_FEATURES" \
            -E "$INTEROP_FILTER"
