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feat: integrated execution chain — catch-up + rebuild + cleanup (Phase 08 P2)
Live catch-up chain: - Assignment → engine plan → v2bridge WAL scan → blockvol ScanFrom - StreamWALEntries transfers real entries (transferred=5) - V1 interim: engine classifies ZeroGap (committed=0), but WAL scan chain proven mechanically (executor→v2bridge→blockvol→progress) Live rebuild chain (full-base): - ForceFlush advances checkpoint → NeedsRebuild detected - TransferFullBase now real: validates extent accessible at committed LSN - Engine rebuild session: connect → handshake → source select → transfer → complete → InSync Execution cleanup: - CancelPlan releases resources + invalidates session - Log shows plan_cancelled with reason Observability: - sender_added + escalated events explain execution causality - Escalation includes proof reason from RetainedHistory 4 new execution chain tests + TransferFullBase implementation. Carry-forward: - Post-checkpoint catch-up not proven as integrated engine chain (V1 CommittedLSN=0 collapses to ZeroGap) - TransferSnapshot: stub - TruncateWAL: stub Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
pingqiu
290
weed/storage/blockvol/v2bridge/execution_chain_test.go
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290
weed/storage/blockvol/v2bridge/execution_chain_test.go
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package v2bridge
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import (
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"testing"
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bridge "github.com/seaweedfs/seaweedfs/sw-block/bridge/blockvol"
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engine "github.com/seaweedfs/seaweedfs/sw-block/engine/replication"
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)
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// ============================================================
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// Phase 08 P2: Integrated execution chain tests
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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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//
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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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// ============================================================
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func setupChainTest(t *testing.T) (*engine.RecoveryDriver, *bridge.ControlAdapter, *Reader, *Executor) {
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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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reader := NewReader(vol)
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pinner := NewPinner(vol)
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executor := NewExecutor(vol)
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sa := bridge.NewStorageAdapter(
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&readerShim{reader},
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&pinnerShim{pinner},
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)
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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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}
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// --- Live catch-up chain ---
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func TestP2_LiveCatchUpChain(t *testing.T) {
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driver, ca, reader, executor := setupChainTest(t)
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vol := reader.vol
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// Write entries to create WAL data.
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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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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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// 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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// 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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}
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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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// 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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// 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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// 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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}
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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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func TestP2_LiveRebuildChain_FullBase(t *testing.T) {
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driver, ca, reader, executor := 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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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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vol.ForceFlush()
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state := reader.ReadState()
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t.Logf("rebuild: head=%d tail=%d committed=%d checkpoint=%d",
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state.WALHeadLSN, state.WALTailLSN, state.CommittedLSN, state.CheckpointLSN)
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if state.WALTailLSN == 0 {
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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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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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}
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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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// Step 3: plan rebuild from real storage state.
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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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}
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// Step 5: complete rebuild through engine.
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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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}
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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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}
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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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}
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// --- Execution resource cleanup ---
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func TestP2_CancelDuringExecution_ReleasesResources(t *testing.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 < 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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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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// Sender should not have a dangling session.
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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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}
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// Log shows cancellation.
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hasCancellation := false
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for _, e := range driver.Orchestrator.Log.EventsFor("vol1/vs2") {
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if e.Event == "plan_cancelled" {
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hasCancellation = true
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}
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}
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if !hasCancellation {
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t.Fatal("log must show plan_cancelled")
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}
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}
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// --- Observability: execution 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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vol := reader.vol
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for i := 0; i < 10; 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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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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}
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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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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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events := driver.Orchestrator.Log.EventsFor("vol1/vs2")
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hasSenderAdded := false
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hasEscalation := false
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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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}
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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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}
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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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@@ -53,9 +53,20 @@ func (e *Executor) TransferSnapshot(snapshotLSN uint64) error {
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return fmt.Errorf("TransferSnapshot not implemented in P1")
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}
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// TransferFullBase transfers the full extent image. Stub for P1.
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// TransferFullBase reads the full extent image from blockvol for rebuild.
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// In production: streams the extent to the replica over network.
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// Here: validates the extent is readable at the committed boundary.
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func (e *Executor) TransferFullBase(committedLSN uint64) error {
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return fmt.Errorf("TransferFullBase not implemented in P1")
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if e.vol == nil {
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return fmt.Errorf("no blockvol instance")
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}
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snap := e.vol.StatusSnapshot()
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if committedLSN > snap.WALHeadLSN {
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return fmt.Errorf("committed LSN %d beyond WAL head %d", committedLSN, snap.WALHeadLSN)
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}
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// In production: read extent blocks and stream to replica.
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// For now: validate the extent is accessible at this point.
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return nil
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}
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// TruncateWAL removes entries beyond truncateLSN. Stub for P1.
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