251 lines
10 KiB
Python
251 lines
10 KiB
Python
from __future__ import annotations
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import importlib.util
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import os
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import stat
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from pathlib import Path
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import pytest
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ROOT = Path(__file__).resolve().parents[2]
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HELPER_PATH = ROOT / "scripts" / "reconcile_controller_state.py"
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UPGRADE_PATH = ROOT / "scripts" / "upgrade_deployment_controller.sh"
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WRAPPER_PATH = ROOT / "scripts" / "upgrade_deployment_controller.ps1"
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spec = importlib.util.spec_from_file_location("reconcile_controller_state", HELPER_PATH)
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assert spec is not None and spec.loader is not None
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reconciliation = importlib.util.module_from_spec(spec)
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spec.loader.exec_module(reconciliation)
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def _roots(tmp_path: Path) -> tuple[Path, Path]:
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legacy = tmp_path / "legacy-state"
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cache = tmp_path / "cache-state"
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legacy.mkdir()
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cache.mkdir()
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return legacy, cache
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def test_reconciliation_migrates_only_missing_legacy_state_with_metadata(tmp_path: Path):
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legacy, cache = _roots(tmp_path)
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(legacy / "nested").mkdir(mode=0o750)
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source = legacy / "nested" / "receipt.json"
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source.write_bytes(b'{"revision":"abc"}\n')
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source.chmod(0o640)
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identical = legacy / "existing.json"
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identical.write_bytes(b'{"status":"healthy"}\n')
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(cache / "existing.json").write_bytes(identical.read_bytes())
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result = reconciliation.reconcile_state_roots(legacy, cache)
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migrated = cache / "nested" / "receipt.json"
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assert migrated.read_bytes() == source.read_bytes()
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assert stat.S_IMODE(migrated.stat().st_mode) == stat.S_IMODE(source.stat().st_mode)
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assert result == {"legacyEntries": 3, "cacheEntries": 1, "migratedDirectories": 1, "migratedFiles": 1}
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def test_reconciliation_detects_every_conflict_before_copying_any_missing_file(tmp_path: Path):
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legacy, cache = _roots(tmp_path)
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(legacy / "a-missing.json").write_text("legacy-only", encoding="utf-8")
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(legacy / "z-conflict.json").write_text("legacy", encoding="utf-8")
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(cache / "z-conflict.json").write_text("cache", encoding="utf-8")
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with pytest.raises(reconciliation.StateConflictError, match="z-conflict.json"):
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reconciliation.reconcile_state_roots(legacy, cache)
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assert not (cache / "a-missing.json").exists()
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assert (cache / "z-conflict.json").read_text(encoding="utf-8") == "cache"
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def test_reconciliation_rejects_symlinks_without_mutating_cache(tmp_path: Path):
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if not hasattr(os, "symlink"):
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pytest.skip("symlinks are unavailable")
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legacy, cache = _roots(tmp_path)
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target = tmp_path / "outside.json"
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target.write_text("outside", encoding="utf-8")
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try:
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(legacy / "unsafe.json").symlink_to(target)
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except OSError:
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pytest.skip("the test process cannot create symlinks")
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with pytest.raises(reconciliation.UnsafeStateError, match="unsafe.json"):
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reconciliation.reconcile_state_roots(legacy, cache)
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assert list(cache.iterdir()) == []
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def test_reconciliation_allows_cache_only_state_and_keeps_it_unchanged(tmp_path: Path):
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legacy, cache = _roots(tmp_path)
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(legacy / "shared.json").write_text("shared", encoding="utf-8")
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(cache / "shared.json").write_text("shared", encoding="utf-8")
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cache_only = cache / "new-controller.json"
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cache_only.write_text("cache-only", encoding="utf-8")
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result = reconciliation.reconcile_state_roots(legacy, cache)
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assert cache_only.read_text(encoding="utf-8") == "cache-only"
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assert result["migratedDirectories"] == 0
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assert result["migratedFiles"] == 0
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def test_reconciliation_rejects_metadata_conflict_before_copying_missing_state(
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tmp_path: Path, monkeypatch: pytest.MonkeyPatch
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):
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legacy, cache = _roots(tmp_path)
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(legacy / "missing.json").write_text("legacy-only", encoding="utf-8")
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(legacy / "shared.json").write_text("shared", encoding="utf-8")
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(cache / "shared.json").write_text("shared", encoding="utf-8")
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real_inventory = reconciliation._inventory
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def inventory_with_conflicting_cache_metadata(root: Path):
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entries = real_inventory(root)
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if root == cache:
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entries["shared.json"] = {
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**entries["shared.json"],
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"mode": int(entries["shared.json"]["mode"]) ^ 0o020,
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"uid": int(entries["shared.json"]["uid"]) + 1,
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"gid": int(entries["shared.json"]["gid"]) + 1,
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}
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return entries
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monkeypatch.setattr(reconciliation, "_inventory", inventory_with_conflicting_cache_metadata)
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with pytest.raises(reconciliation.StateConflictError, match="shared.json"):
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reconciliation.reconcile_state_roots(legacy, cache)
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assert not (cache / "missing.json").exists()
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def test_reconciliation_rejects_legacy_inode_replacement_and_rolls_back(
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tmp_path: Path, monkeypatch: pytest.MonkeyPatch
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):
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legacy, cache = _roots(tmp_path)
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source = legacy / "receipt.json"
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source.write_bytes(b'{"revision":"abc"}\n')
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real_create_file = reconciliation._create_file
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def replace_source_before_copy(path: Path, payload: bytes, metadata: dict[str, int | str]):
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replacement = source.with_suffix(".replacement")
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replacement.write_bytes(source.read_bytes())
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os.replace(replacement, source)
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real_create_file(path, payload, metadata)
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monkeypatch.setattr(reconciliation, "_create_file", replace_source_before_copy)
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with pytest.raises(reconciliation.UnsafeStateError, match="changed during migration"):
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reconciliation.reconcile_state_roots(legacy, cache)
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assert list(cache.iterdir()) == []
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def test_reconciliation_rolls_back_every_created_entry_after_partial_failure(
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tmp_path: Path, monkeypatch: pytest.MonkeyPatch
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):
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legacy, cache = _roots(tmp_path)
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(legacy / "nested").mkdir()
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(legacy / "nested" / "a.json").write_text("first", encoding="utf-8")
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(legacy / "nested" / "b.json").write_text("second", encoding="utf-8")
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real_create_file = reconciliation._create_file
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created_files = 0
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def fail_after_first_file(path: Path, payload: bytes, metadata: dict[str, int | str]):
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nonlocal created_files
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if created_files == 1:
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raise OSError("injected second-file failure")
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real_create_file(path, payload, metadata)
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created_files += 1
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monkeypatch.setattr(reconciliation, "_create_file", fail_after_first_file)
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with pytest.raises(OSError, match="injected second-file failure"):
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reconciliation.reconcile_state_roots(legacy, cache)
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assert list(cache.iterdir()) == []
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def test_successful_reconciliation_can_be_rolled_back_before_controller_swap(tmp_path: Path):
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legacy, cache = _roots(tmp_path)
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preexisting = cache / "cache-only.json"
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preexisting.write_text("keep", encoding="utf-8")
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(legacy / "nested").mkdir()
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(legacy / "nested" / "receipt.json").write_text("migrate", encoding="utf-8")
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journal = tmp_path / "migration-journal.json"
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reconciliation.reconcile_state_roots(legacy, cache, journal_path=journal)
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assert (cache / "nested" / "receipt.json").read_text(encoding="utf-8") == "migrate"
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reconciliation.rollback_reconciliation(cache, journal)
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assert preexisting.read_text(encoding="utf-8") == "keep"
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assert not (cache / "nested").exists()
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assert not journal.exists()
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def test_upgrade_prepares_before_stop_and_reconciles_between_stop_and_activation():
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script = UPGRADE_PATH.read_text(encoding="utf-8")
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prepare = 'backup="$(python3 "${work}/${PREPARER_NAME}" prepare \\'
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stop = 'python3 "${work}/${PREPARER_NAME}" stop --backup "$backup"'
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reconcile = 'python3 "${work}/reconcile_controller_state.py" \\\n --legacy-root'
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activate = 'python3 "${work}/${PREPARER_NAME}" activate --backup "$backup"'
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assert '/srv/example/appdata/gitea-deploy-runners/deploy.lock' not in script
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assert script.index(prepare) < script.index(stop)
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assert script.index(stop) < script.index(reconcile)
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assert script.index(reconcile) < script.index(activate)
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assert 'flock -x "$promotion_lock_fd"' in script
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assert 'mv -- "$CONTROLLER_DIR"' not in script
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assert 'cp -a -- "$CONTROLLER_DIR"' not in script
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def test_upgrade_prepares_and_validates_captured_optional_private_tls_before_stopping_controller():
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script = UPGRADE_PATH.read_text(encoding="utf-8")
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prepare = 'backup="$(python3 "${work}/${PREPARER_NAME}" prepare \\'
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stop = 'python3 "${work}/${PREPARER_NAME}" stop --backup "$backup"'
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preparer = (ROOT / "scripts/prepare_controller_hub_release_volume.py").read_text(encoding="utf-8")
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assert "_validate_previous_private_tls(stage_root)" in preparer
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assert script.index(prepare) < script.index(stop)
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def test_upgrade_rolls_back_state_before_restoring_or_starting_the_old_writer():
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script = UPGRADE_PATH.read_text(encoding="utf-8")
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restore = script[script.index("restore_previous() {") : script.index("cleanup() {")]
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stop = 'if ! python3 "${work}/${PREPARER_NAME}" rollback --backup "$backup" --stop-only; then'
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rollback = '--rollback'
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restore_controller = 'if ! python3 "${work}/${PREPARER_NAME}" rollback --backup "$backup"; then'
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assert restore.index(stop) < restore.index(rollback)
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assert restore.index(rollback) < restore.index(restore_controller)
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assert "controller remains stopped" in script
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assert 'mv -- "$previous"' not in restore
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assert 'docker compose --project-directory "$ROOT"' not in restore
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reconcile = 'python3 "${work}/reconcile_controller_state.py"'
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stopped = script.index("writers_stopped=1", script.index(stop))
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reconcile_index = script.index(reconcile, stopped)
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activate_index = script.index(
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'python3 "${work}/${PREPARER_NAME}" activate --backup "$backup"',
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reconcile_index,
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)
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assert stopped < reconcile_index < activate_index
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assert '[[ -f "$migration_journal" && ! -L "$migration_journal" ]]' in restore
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assert '[[ -e "$migration_journal" || -L "$migration_journal" ]]' in restore
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def test_wrapper_binds_reconciliation_helper_to_the_immutable_revision():
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wrapper = WRAPPER_PATH.read_text(encoding="utf-8")
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assert "scripts/reconcile_controller_state.py" in wrapper
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assert "git archive" in wrapper
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def test_wrapper_archives_the_fixed_operator_handoff_required_by_root_upgrade():
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wrapper = WRAPPER_PATH.read_text(encoding="utf-8")
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upgrade = UPGRADE_PATH.read_text(encoding="utf-8")
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archive_line = next(line for line in wrapper.splitlines() if "git archive" in line)
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assert "scripts/run_repopulse_adoption.py" in archive_line
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assert '"scripts/run_repopulse_adoption.py"' in upgrade
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