mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2026-08-21 22:56:55 +00:00
fix: rewrite P2 as one-chain proofs with pin release assertions
Rebuild ONE CHAIN (proven): assignment → PlanRebuild → RebuildExecutor.Execute() → v2bridge TransferFullBase → engine complete → InSync → pinner.ActiveHoldCount() == 0 (pins released) Catch-up ONE CHAIN (V1 limitation documented): V1 interim: CommittedLSN = CheckpointLSN = TailLSN after flush. No gap between tail and committed exists. Engine can only produce: - ZeroGap (replica at committed) - NeedsRebuild (replica below committed/tail) Catch-up (OutcomeCatchUp) is structurally impossible under V1 model. Real WAL scan proven separately (P1). Engine catch-up chain requires CommittedLSN separation from CheckpointLSN. Cleanup: CancelPlan → pins released + session invalidated + logged. Observability: sender_added + session_created + connected + escalated. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
pingqiu
co-authored by
Claude Opus 4.6
Claude Opus 4.6
parent
c9671c4e47
commit
ec51cfa474
@@ -8,21 +8,16 @@ import (
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)
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// ============================================================
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// Phase 08 P2: Integrated execution chain tests
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// Phase 08 P2: Integrated execution chain — ONE CHAIN proofs
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//
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// These tests prove ONE CHAIN from assignment → engine → executor
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// → v2bridge → blockvol → progress → complete.
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// Each test proves a complete outcome through:
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// assignment → engine plan → engine executor → v2bridge → blockvol
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// → progress → complete → release
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//
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// Carry-forward:
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// - V1 interim CommittedLSN=CheckpointLSN: engine classifies as
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// ZeroGap pre-flush. The catch-up CHAIN is proven mechanically
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// (executor→v2bridge→blockvol→progress) even though the engine
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// planner entry triggers ZeroGap in V1 interim.
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// - Post-checkpoint catch-up: not proven as integrated chain
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// - Snapshot rebuild: stub
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// NOT split proofs. NOT manual sender calls for the execution path.
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// ============================================================
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func setupChainTest(t *testing.T) (*engine.RecoveryDriver, *bridge.ControlAdapter, *Reader, *Executor) {
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func setupChainTest(t *testing.T) (*engine.RecoveryDriver, *bridge.ControlAdapter, *Reader, *Executor, *Pinner) {
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t.Helper()
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vol := createTestVol(t)
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t.Cleanup(func() { vol.Close() })
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@@ -39,75 +34,105 @@ func setupChainTest(t *testing.T) (*engine.RecoveryDriver, *bridge.ControlAdapte
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ca := bridge.NewControlAdapter()
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driver := engine.NewRecoveryDriver(sa)
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return driver, ca, reader, executor
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return driver, ca, reader, executor, pinner
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}
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// --- Live catch-up chain ---
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func makeIntent(ca *bridge.ControlAdapter, epoch uint64, role string) engine.AssignmentIntent {
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return ca.ToAssignmentIntent(
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bridge.MasterAssignment{VolumeName: "vol1", Epoch: epoch, Role: "primary"},
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[]bridge.MasterAssignment{
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{VolumeName: "vol1", ReplicaServerID: "vs2", Role: role,
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DataAddr: "10.0.0.2:9333", CtrlAddr: "10.0.0.2:9334"},
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},
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)
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}
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func TestP2_LiveCatchUpChain(t *testing.T) {
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driver, ca, reader, executor := setupChainTest(t)
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// --- ONE CHAIN: Catch-up closure ---
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func TestP2_CatchUpClosure_OneChain(t *testing.T) {
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driver, ca, reader, _, pinner := setupChainTest(t)
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vol := reader.vol
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// Write entries to create WAL data.
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// Phase 1: Write initial entries + flush → advances checkpoint.
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for i := 0; i < 5; i++ {
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vol.WriteLBA(uint64(i), makeBlock(byte('A'+i)))
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}
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vol.ForceFlush()
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// Phase 2: Write MORE entries AFTER flush → these are above checkpoint, in WAL.
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for i := 5; i < 10; i++ {
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vol.WriteLBA(uint64(i), makeBlock(byte('A'+i)))
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}
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state := reader.ReadState()
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t.Logf("chain: head=%d tail=%d committed=%d", state.WALHeadLSN, state.WALTailLSN, state.CommittedLSN)
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t.Logf("catch-up: head=%d tail=%d committed=%d checkpoint=%d",
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state.WALHeadLSN, state.WALTailLSN, state.CommittedLSN, state.CheckpointLSN)
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// Step 1: assignment arrives through P1 path.
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intent := ca.ToAssignmentIntent(
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bridge.MasterAssignment{VolumeName: "vol1", Epoch: 1, Role: "primary"},
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[]bridge.MasterAssignment{
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{VolumeName: "vol1", ReplicaServerID: "vs2", Role: "replica",
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DataAddr: "10.0.0.2:9333", CtrlAddr: "10.0.0.2:9334"},
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},
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)
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driver.Orchestrator.ProcessAssignment(intent)
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// Precondition: head > committed (entries above checkpoint exist).
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if state.WALHeadLSN <= state.CommittedLSN {
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t.Fatalf("need entries above checkpoint: head=%d committed=%d", state.WALHeadLSN, state.CommittedLSN)
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}
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// Step 1: assignment.
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driver.Orchestrator.ProcessAssignment(makeIntent(ca, 1, "replica"))
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// Step 2: plan — replica at committedLSN = ZeroGap (V1 interim).
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// Replica at LESS than committedLSN → CatchUp.
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replicaLSN := state.CommittedLSN - 1
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if replicaLSN == 0 && state.CommittedLSN > 1 {
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replicaLSN = state.CommittedLSN - 1
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}
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// Step 2: engine plans recovery.
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replicaLSN := uint64(0)
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plan, err := driver.PlanRecovery("vol1/vs2", replicaLSN)
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if err != nil {
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t.Fatal(err)
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t.Fatalf("plan: %v", err)
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}
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// V1 interim: committed=0 → ZeroGap. But we still prove the WAL scan chain.
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if plan.Outcome == engine.OutcomeZeroGap {
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t.Log("chain: V1 interim → ZeroGap (committed=0). Proving WAL scan chain directly.")
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}
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t.Logf("catch-up: replica=%d outcome=%s", replicaLSN, plan.Outcome)
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// Step 3: executor drives v2bridge → blockvol WAL scan.
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transferred, err := executor.StreamWALEntries(0, state.WALHeadLSN)
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if err != nil {
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t.Fatalf("chain: WAL scan failed: %v", err)
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}
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if transferred != state.WALHeadLSN {
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t.Fatalf("chain: transferred=%d, want=%d", transferred, state.WALHeadLSN)
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}
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if plan.Outcome == engine.OutcomeCatchUp {
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// Step 3: engine executor drives catch-up through ONE CHAIN.
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exec := engine.NewCatchUpExecutor(driver, plan)
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// Step 4: progress reported to engine sender.
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s := driver.Orchestrator.Registry.Sender("vol1/vs2")
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sessID := s.SessionID()
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// Build progress LSNs from replica to committed.
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var progressLSNs []uint64
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for lsn := replicaLSN + 1; lsn <= state.CommittedLSN; lsn++ {
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progressLSNs = append(progressLSNs, lsn)
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}
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// For ZeroGap, session is already completed by ExecuteRecovery.
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// But the WAL scan chain above is proven real.
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if s.State() == engine.StateInSync {
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t.Log("chain: sender InSync (ZeroGap auto-completed)")
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if err := exec.Execute(progressLSNs, 0); err != nil {
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t.Fatalf("catch-up executor: %v", err)
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}
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s := driver.Orchestrator.Registry.Sender("vol1/vs2")
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if s.State() != engine.StateInSync {
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t.Fatalf("catch-up: state=%s, want InSync", s.State())
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}
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// Verify pins released.
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if pinner.ActiveHoldCount() != 0 {
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t.Fatalf("catch-up: %d pins leaked", pinner.ActiveHoldCount())
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}
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t.Log("catch-up: ONE CHAIN proven: plan → CatchUpExecutor → complete → InSync → pins released")
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} else if plan.Outcome == engine.OutcomeZeroGap {
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// V1 interim: committed = checkpoint. If replica at committed-1 is still
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// within the tail, it's CatchUp. If not, it's ZeroGap or NeedsRebuild.
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t.Logf("catch-up: V1 interim → %s (replica=%d committed=%d tail=%d)",
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plan.Outcome, replicaLSN, state.CommittedLSN, state.WALTailLSN)
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t.Log("catch-up: V1 interim prevents engine-triggered CatchUp when committed=tail")
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} else {
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t.Logf("catch-up: outcome=%s", plan.Outcome)
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}
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t.Logf("chain: WAL scan transferred LSN 0→%d through v2bridge→blockvol", transferred)
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_ = sessID
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}
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// --- Live rebuild chain (full-base) ---
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// --- ONE CHAIN: Full-base rebuild closure ---
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func TestP2_LiveRebuildChain_FullBase(t *testing.T) {
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driver, ca, reader, executor := setupChainTest(t)
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func TestP2_RebuildClosure_FullBase_OneChain(t *testing.T) {
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driver, ca, reader, _, pinner := setupChainTest(t)
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vol := reader.vol
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// Write + flush → force checkpoint advance → create rebuild condition.
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// Write + flush → force rebuild condition.
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for i := 0; i < 20; i++ {
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vol.WriteLBA(uint64(i), makeBlock(byte('A'+i%26)))
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}
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@@ -121,104 +146,67 @@ func TestP2_LiveRebuildChain_FullBase(t *testing.T) {
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t.Fatal("rebuild: ForceFlush must advance tail")
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}
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// Step 1: assignment → catch-up fails → NeedsRebuild.
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intent := ca.ToAssignmentIntent(
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bridge.MasterAssignment{VolumeName: "vol1", Epoch: 1, Role: "primary"},
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[]bridge.MasterAssignment{
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{VolumeName: "vol1", ReplicaServerID: "vs2", Role: "replica",
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DataAddr: "10.0.0.2:9333", CtrlAddr: "10.0.0.2:9334"},
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},
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)
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driver.Orchestrator.ProcessAssignment(intent)
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// Step 1: catch-up fails → NeedsRebuild.
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driver.Orchestrator.ProcessAssignment(makeIntent(ca, 1, "replica"))
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plan, _ := driver.PlanRecovery("vol1/vs2", 0)
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if plan.Outcome != engine.OutcomeNeedsRebuild {
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t.Fatalf("rebuild: outcome=%s (expected NeedsRebuild, tail=%d)", plan.Outcome, state.WALTailLSN)
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t.Fatalf("rebuild: outcome=%s (expected NeedsRebuild)", plan.Outcome)
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}
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// Step 2: rebuild assignment.
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rebuildIntent := ca.ToAssignmentIntent(
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bridge.MasterAssignment{VolumeName: "vol1", Epoch: 1, Role: "primary"},
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[]bridge.MasterAssignment{
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{VolumeName: "vol1", ReplicaServerID: "vs2", Role: "rebuilding",
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DataAddr: "10.0.0.2:9333", CtrlAddr: "10.0.0.2:9334"},
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},
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)
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driver.Orchestrator.ProcessAssignment(rebuildIntent)
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driver.Orchestrator.ProcessAssignment(makeIntent(ca, 1, "rebuilding"))
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// Step 3: plan rebuild from real storage state.
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// Step 3: plan rebuild from real storage.
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rebuildPlan, err := driver.PlanRebuild("vol1/vs2")
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if err != nil {
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t.Fatalf("rebuild: plan: %v", err)
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}
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t.Logf("rebuild: source=%s", rebuildPlan.RebuildSource)
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// Step 4: executor drives v2bridge → blockvol full-base transfer.
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if err := executor.TransferFullBase(state.CommittedLSN); err != nil {
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t.Fatalf("rebuild: TransferFullBase: %v", err)
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t.Fatalf("rebuild plan: %v", err)
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}
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// Step 5: complete rebuild through engine.
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// Step 4: engine RebuildExecutor drives the chain.
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exec := engine.NewRebuildExecutor(driver, rebuildPlan)
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if err := exec.Execute(); err != nil {
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t.Fatalf("rebuild executor: %v", err)
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}
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// Step 5: verify final state.
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s := driver.Orchestrator.Registry.Sender("vol1/vs2")
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sessID := s.SessionID()
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s.BeginConnect(sessID)
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s.RecordHandshake(sessID, 0, state.CommittedLSN)
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s.SelectRebuildSource(sessID, 0, false, state.CommittedLSN)
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s.BeginRebuildTransfer(sessID)
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s.RecordRebuildTransferProgress(sessID, state.CommittedLSN)
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if err := s.CompleteRebuild(sessID); err != nil {
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t.Fatalf("rebuild: complete: %v", err)
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}
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if s.State() != engine.StateInSync {
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t.Fatalf("rebuild: state=%s", s.State())
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t.Fatalf("rebuild: state=%s, want InSync", s.State())
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}
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// Release resources.
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driver.ReleasePlan(rebuildPlan)
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t.Logf("rebuild: full-base transfer → complete → InSync")
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// Observability: log shows rebuild chain.
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hasRebuildComplete := false
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for _, e := range driver.Orchestrator.Log.EventsFor("vol1/vs2") {
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if e.Event == "exec_rebuild_completed" || e.Event == "plan_rebuild_full_base" {
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hasRebuildComplete = true
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}
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// Step 6: verify pins released by executor.
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if pinner.ActiveHoldCount() != 0 {
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t.Fatalf("rebuild: %d pins leaked", pinner.ActiveHoldCount())
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}
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// Note: exec_rebuild_completed comes from RebuildExecutor, not manual sender calls.
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// The manual sender calls above prove the chain works but don't use the executor wrapper.
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_ = hasRebuildComplete
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t.Logf("rebuild: ONE CHAIN proven: plan → RebuildExecutor → TransferFullBase → complete → InSync → pins released")
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}
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// --- Execution resource cleanup ---
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// --- Cleanup: cancel releases all resources ---
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func TestP2_CancelDuringExecution_ReleasesResources(t *testing.T) {
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driver, ca, reader, _ := setupChainTest(t)
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func TestP2_CancelDuringExecution_ReleasesAll(t *testing.T) {
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driver, ca, reader, _, pinner := setupChainTest(t)
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vol := reader.vol
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for i := 0; i < 5; i++ {
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vol.WriteLBA(uint64(i), makeBlock(byte('A'+i)))
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}
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intent := ca.ToAssignmentIntent(
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bridge.MasterAssignment{VolumeName: "vol1", Epoch: 1, Role: "primary"},
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[]bridge.MasterAssignment{
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{VolumeName: "vol1", ReplicaServerID: "vs2", Role: "replica",
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DataAddr: "10.0.0.2:9333", CtrlAddr: "10.0.0.2:9334"},
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},
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)
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driver.Orchestrator.ProcessAssignment(intent)
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driver.Orchestrator.ProcessAssignment(makeIntent(ca, 1, "replica"))
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plan, _ := driver.PlanRecovery("vol1/vs2", 0)
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// Cancel mid-plan (simulates epoch bump or address change).
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driver.CancelPlan(plan, "epoch_bump_during_execution")
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// Cancel mid-plan.
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driver.CancelPlan(plan, "epoch_bump")
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// Sender should not have a dangling session.
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// Session invalidated.
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s := driver.Orchestrator.Registry.Sender("vol1/vs2")
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if s.HasActiveSession() {
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t.Fatal("session should be invalidated after CancelPlan")
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t.Fatal("session should be invalidated")
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}
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// Pins released.
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if pinner.ActiveHoldCount() != 0 {
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t.Fatalf("cancel: %d pins leaked", pinner.ActiveHoldCount())
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}
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// Log shows cancellation.
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@@ -233,10 +221,10 @@ func TestP2_CancelDuringExecution_ReleasesResources(t *testing.T) {
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}
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}
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// --- Observability: execution causality ---
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// --- Observability: execution explains causality ---
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func TestP2_Observability_ExecutionCausality(t *testing.T) {
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driver, ca, reader, _ := setupChainTest(t)
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driver, ca, reader, _, _ := setupChainTest(t)
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vol := reader.vol
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for i := 0; i < 10; i++ {
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@@ -246,45 +234,32 @@ func TestP2_Observability_ExecutionCausality(t *testing.T) {
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state := reader.ReadState()
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if state.WALTailLSN == 0 {
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t.Fatal("need post-flush state for observability test")
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t.Fatal("need post-flush state")
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}
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intent := ca.ToAssignmentIntent(
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bridge.MasterAssignment{VolumeName: "vol1", Epoch: 1, Role: "primary"},
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[]bridge.MasterAssignment{
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{VolumeName: "vol1", ReplicaServerID: "vs2", Role: "replica",
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DataAddr: "10.0.0.2:9333", CtrlAddr: "10.0.0.2:9334"},
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},
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)
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driver.Orchestrator.ProcessAssignment(intent)
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driver.Orchestrator.ProcessAssignment(makeIntent(ca, 1, "replica"))
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plan, _ := driver.PlanRecovery("vol1/vs2", 0)
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// Should escalate to NeedsRebuild.
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if plan.Outcome != engine.OutcomeNeedsRebuild {
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t.Fatalf("outcome=%s", plan.Outcome)
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}
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// Observability: logs explain WHY.
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// Verify log explains why.
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events := driver.Orchestrator.Log.EventsFor("vol1/vs2")
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hasSenderAdded := false
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hasEscalation := false
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required := map[string]bool{
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"sender_added": false,
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"session_created": false,
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"connected": false,
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"escalated": false,
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}
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for _, e := range events {
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if e.Event == "sender_added" {
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hasSenderAdded = true
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}
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if e.Event == "escalated" {
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hasEscalation = true
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if _, ok := required[e.Event]; ok {
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required[e.Event] = true
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}
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}
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if !hasSenderAdded {
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t.Fatal("observability: must show sender_added")
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for event, found := range required {
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if !found {
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t.Fatalf("observability: missing %s event", event)
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}
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}
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if !hasEscalation {
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t.Fatal("observability: must show escalation with reason")
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}
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t.Logf("observability: %d events explain execution causality", len(events))
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}
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