Monorepo for Tangled
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import ( "context" "path/filepath" "testing" "time"
"tangled.org/core/notifier" "tangled.org/core/spindle/db" millproto "tangled.org/core/spindle/mill/proto" millv1 "tangled.org/core/spindle/mill/proto/gen" "tangled.org/core/spindle/models")
func restoreTestMill(t *testing.T, cfg Config) (*Mill, *db.DB) { t.Helper() bdb, err := db.Make(context.Background(), filepath.Join(t.TempDir(), "mill.db")) if err != nil { t.Fatalf("db.Make: %v", err) } t.Cleanup(func() { bdb.Close() }) n := notifier.New() m := New(discardLogger(), cfg) m.Attach(bdb, &n) return m, bdb}
func restoredMill(t *testing.T, bdb *db.DB, cfg Config) *Mill { t.Helper() n := notifier.New() m := New(discardLogger(), cfg) m.Attach(bdb, &n) if err := m.RestoreState(); err != nil { t.Fatalf("RestoreState: %v", err) } return m}
func TestRestoreStateRebuildsLeasesAndCursors(t *testing.T) { _, bdb := restoreTestMill(t, Config{ReconnectGrace: time.Minute})
if err := bdb.SaveMillLease(db.MillLease{ LeaseID: "lease-1", NodeID: "node-1", Epoch: "inc-1", Engine: "dummy", Knot: "knot.example", Rkey: "rkey1", Workflow: "build", State: leaseRowRunning, }); err != nil { t.Fatalf("SaveMillLease: %v", err) } if err := bdb.ApplyEventBatch(nil, func(tx *db.EventBatchTx) error { return tx.AdvanceCursor("node-1", "inc-1", 7) }); err != nil { t.Fatalf("AdvanceCursor: %v", err) }
m2 := restoredMill(t, bdb, Config{ReconnectGrace: time.Minute})
m2.mu.Lock() lease := m2.leases["lease-1"] seqno := m2.nodeSeqno["node-1/inc-1"] m2.mu.Unlock()
if lease == nil { t.Fatal("restored mill has no lease-1") } if !lease.orphaned { t.Fatal("restored lease is not orphaned; a terminal would be delivered to a waiter that does not exist") } if lease.getState() != leaseRunning { t.Fatalf("restored lease state = %v, want leaseRunning", lease.getState()) } wantWid := models.WorkflowId{PipelineId: models.PipelineId{Knot: "knot.example", Rkey: "rkey1"}, Name: "build"} if lease.wid != wantWid { t.Fatalf("restored lease wid = %+v, want %+v", lease.wid, wantWid) } if seqno != 7 { t.Fatalf("restored cursor = %d, want 7", seqno) }}
func TestOrphanTerminalAuthorsStatusRow(t *testing.T) { _, bdb := restoreTestMill(t, Config{ReconnectGrace: time.Minute}) if err := bdb.SaveMillLease(db.MillLease{ LeaseID: "lease-1", NodeID: "node-1", Epoch: "inc-1", Engine: "dummy", Knot: "knot.example", Rkey: "rkey1", Workflow: "build", State: leaseRowRunning, }); err != nil { t.Fatalf("SaveMillLease: %v", err) } if err := bdb.ApplyEventBatch(nil, func(tx *db.EventBatchTx) error { return tx.AdvanceCursor("node-1", "inc-1", 3) }); err != nil { t.Fatalf("AdvanceCursor: %v", err) }
m := restoredMill(t, bdb, Config{ReconnectGrace: time.Minute})
sess := newSession("node-1", "inc-1", nil, nopEncoder(), discardLogger()) resume, ok := m.attachSession(sess) if !ok { t.Fatal("attachSession rejected the reconnecting executor") } if resume != 3 { t.Fatalf("attachSession resume seqno = %d, want restored cursor 3", resume) }
_ = m.onEventBatch(sess, &millv1.EventBatch{ Epoch: sess.epoch, Events: []*millv1.Event{ { Seqno: 4, LeaseId: "lease-1", Payload: &millv1.Event_AttemptResult{ AttemptResult: &millv1.AttemptResult{ Status: millv1.TerminalStatus_SUCCESS, }, }, }, }, })
wid := models.WorkflowId{PipelineId: models.PipelineId{Knot: "knot.example", Rkey: "rkey1"}, Name: "build"} st, err := bdb.GetStatus(wid) if err != nil { t.Fatalf("GetStatus after orphan terminal: %v", err) } if st.Status != string(models.StatusKindSuccess) { t.Fatalf("orphan terminal authored status %q, want success", st.Status) }
m.mu.Lock() _, still := m.leases["lease-1"] m.mu.Unlock() if still { t.Fatal("finished orphan still in the lease map") } if rows, _ := bdb.ListMillLeases(); len(rows) != 0 { t.Fatalf("finished orphan still persisted: %+v", rows) }}
func TestSnapshotReconciliationFailsDroppedOrphans(t *testing.T) { _, bdb := restoreTestMill(t, Config{ReconnectGrace: time.Minute}) for _, l := range []db.MillLease{ {LeaseID: "lease-kept", NodeID: "node-1", Epoch: "inc-1", Engine: "dummy", Knot: "k", Rkey: "r1", Workflow: "w", State: leaseRowRunning}, {LeaseID: "lease-gone", NodeID: "node-1", Epoch: "inc-1", Engine: "dummy", Knot: "k", Rkey: "r2", Workflow: "w", State: leaseRowRunning}, } { if err := bdb.SaveMillLease(l); err != nil { t.Fatalf("SaveMillLease(%s): %v", l.LeaseID, err) } }
m := restoredMill(t, bdb, Config{ReconnectGrace: time.Minute})
sess := newSession("node-1", "inc-1", nil, nopEncoder(), discardLogger()) m.attachSession(sess)
m.onSnapshot(sess, &millv1.NodeSnapshot{ Seqno: 1, ActiveLeaseIds: []string{"lease-kept"}, })
m.mu.Lock() _, kept := m.leases["lease-kept"] _, gone := m.leases["lease-gone"] m.mu.Unlock() if !kept { t.Fatal("reconciliation dropped a lease the executor still holds") } if gone { t.Fatal("reconciliation kept a lease the executor no longer holds") }
st, err := bdb.GetStatus(models.WorkflowId{PipelineId: models.PipelineId{Knot: "k", Rkey: "r2"}, Name: "w"}) if err != nil { t.Fatalf("GetStatus for dropped orphan: %v", err) } if st.Status != string(models.StatusKindFailed) { t.Fatalf("dropped orphan authored status %q, want failed", st.Status) }}func TestSnapshotReconciliationPreservesRequestedCancellation(t *testing.T) { m, bdb := restoreTestMill(t, Config{ReconnectGrace: time.Minute}) lease := newLease("lease-1", "node-1", "inc-old", "dummy") lease.wid = models.WorkflowId{ PipelineId: models.PipelineId{Knot: "k", Rkey: "r1"}, Name: "w", } lease.setState(leaseRunning) lease.requestCancel("workflow destroyed") if err := m.persistLease(lease, leaseRowRunning); err != nil { t.Fatalf("persistLease: %v", err) } m.mu.Lock() m.leases[lease.id] = lease m.mu.Unlock()
sess := newSession("node-1", "inc-new", nil, nopEncoder(), discardLogger()) m.attachSession(sess) if err := m.onSnapshot(sess, &millv1.NodeSnapshot{Seqno: 1}); err != nil { t.Fatalf("onSnapshot: %v", err) }
st, err := bdb.GetStatus(lease.wid) if err != nil { t.Fatalf("GetStatus: %v", err) } if st.Status != string(models.StatusKindCancelled) { t.Fatalf("reconciled status = %q, want cancelled", st.Status) }}
func TestSnapshotReconciliationCancelsUnknownExecutorLease(t *testing.T) { m, _ := restoreTestMill(t, Config{ReconnectGrace: time.Minute}) cancelled := make(chan string, 1) sess := newSession("node-1", "inc-1", nil, scriptedEncoder(func(msg *millproto.Message) error { if cancel := msg.GetCancelAttempt(); cancel != nil { cancelled <- cancel.GetLeaseId() } return nil }), discardLogger()) m.attachSession(sess)
if err := m.onSnapshot(sess, &millv1.NodeSnapshot{ Seqno: 1, ActiveLeaseIds: []string{"executor-only"}, }); err != nil { t.Fatalf("onSnapshot: %v", err) } select { case id := <-cancelled: if id != "executor-only" { t.Fatalf("cancelled lease = %q, want executor-only", id) } default: t.Fatal("snapshot reconciliation left an executor-only lease running") }}
func TestSweepFailsOrphansOfAbsentExecutors(t *testing.T) { _, bdb := restoreTestMill(t, Config{ReconnectGrace: time.Minute}) if err := bdb.SaveMillLease(db.MillLease{ LeaseID: "lease-1", NodeID: "node-absent", Epoch: "inc-absent", Engine: "dummy", Knot: "k", Rkey: "r1", Workflow: "w", State: leaseRowReserved, }); err != nil { t.Fatalf("SaveMillLease: %v", err) }
m := restoredMill(t, bdb, Config{ReconnectGrace: time.Minute}) m.sweepUnclaimedOrphans()
m.mu.Lock() _, still := m.leases["lease-1"] m.mu.Unlock() if still { t.Fatal("sweep kept an orphan whose executor never reconnected") } st, err := bdb.GetStatus(models.WorkflowId{PipelineId: models.PipelineId{Knot: "k", Rkey: "r1"}, Name: "w"}) if err != nil { t.Fatalf("GetStatus after sweep: %v", err) } if st.Status != string(models.StatusKindFailed) { t.Fatalf("sweep authored status %q, want failed", st.Status) } if rows, _ := bdb.ListMillLeases(); len(rows) != 0 { t.Fatalf("swept orphan still persisted: %+v", rows) }}
func TestAckSeqnoPersistsCursor(t *testing.T) { m, bdb := restoreTestMill(t, Config{ReconnectGrace: time.Minute}) sess := newSession("node-1", "inc-1", nil, nopEncoder(), discardLogger()) m.attachSession(sess)
owned := newLease("lease-1", "node-1", "inc-1", "dummy") owned.wid = models.WorkflowId{PipelineId: models.PipelineId{Knot: "k", Rkey: "r"}, Name: "build"} m.mu.Lock() m.leases[owned.id] = owned m.mu.Unlock()
err := m.onEventBatch(sess, &millv1.EventBatch{ Epoch: sess.epoch, Events: []*millv1.Event{ { Seqno: 1, LeaseId: owned.id, Payload: &millv1.Event_StatusEvent{ StatusEvent: &millv1.StatusEvent{ Status: millv1.NonterminalStatus_RUNNING, }, }, }, }, }) if err != nil { t.Fatalf("onEventBatch: %v", err) }
cursors, err := bdb.ListExecutorCursors() if err != nil { t.Fatalf("ListExecutorCursors: %v", err) } if len(cursors) != 1 || cursors[0].AckedSeqno != 1 { t.Fatalf("persisted cursor = %+v, want seqno 1", cursors) }}
func TestOrphanTerminalFailureKeepsLeaseAndSeqnoRetryable(t *testing.T) { _, bdb := restoreTestMill(t, Config{ReconnectGrace: time.Minute}) if err := bdb.SaveMillLease(db.MillLease{ LeaseID: "lease-1", NodeID: "node-1", Epoch: "inc-1", Engine: "dummy", Knot: "knot.example", Rkey: "rkey1", Workflow: "build", State: leaseRowRunning, }); err != nil { t.Fatalf("SaveMillLease: %v", err) } if err := bdb.ApplyEventBatch(nil, func(tx *db.EventBatchTx) error { return tx.AdvanceCursor("node-1", "inc-1", 3) }); err != nil { t.Fatalf("AdvanceCursor: %v", err) } if _, err := bdb.Exec(` create trigger reject_orphan_lease_delete before delete on mill_leases begin select raise(abort, 'forced delete failure'); end `); err != nil { t.Fatalf("create failure trigger: %v", err) }
m := restoredMill(t, bdb, Config{ReconnectGrace: time.Minute}) sess := newSession("node-1", "inc-1", nil, nopEncoder(), discardLogger()) if _, ok := m.attachSession(sess); !ok { t.Fatal("attachSession rejected reconnect") } batch := &millv1.EventBatch{ Epoch: sess.epoch, Events: []*millv1.Event{ { Seqno: 4, LeaseId: "lease-1", Payload: &millv1.Event_AttemptResult{ AttemptResult: &millv1.AttemptResult{ Status: millv1.TerminalStatus_SUCCESS, }, }, }, }, } if err := m.onEventBatch(sess, batch); err == nil { t.Fatal("orphan terminal stream succeeded despite forced transaction failure") }
m.mu.Lock() lease := m.leases["lease-1"] seqno := m.nodeSeqno["node-1/inc-1"] m.mu.Unlock() if lease == nil || lease.getState() == leaseDone { t.Fatal("failed orphan completion made the in-memory lease unretryable") } if seqno != 3 { t.Fatalf("in-memory stream seqno = %d, want 3", seqno) } if rows, err := bdb.ListMillLeases(); err != nil || len(rows) != 1 { t.Fatalf("durable leases after transaction rollback = %+v, err = %v; want retained lease", rows, err) } var events int if err := bdb.QueryRow(`select count(*) from events`).Scan(&events); err != nil { t.Fatalf("count events: %v", err) } if events != 0 { t.Fatalf("terminal events after transaction rollback = %d, want 0", events) }
if _, err := bdb.Exec(`drop trigger reject_orphan_lease_delete`); err != nil { t.Fatalf("drop failure trigger: %v", err) } if err := m.onEventBatch(sess, batch); err != nil { t.Fatalf("retry orphan terminal: %v", err) } m.mu.Lock() _, still := m.leases["lease-1"] seqno = m.nodeSeqno["node-1/inc-1"] m.mu.Unlock() if still { t.Fatal("successful orphan completion retained in-memory lease") } if seqno != 4 { t.Fatalf("in-memory stream seqno after retry = %d, want 4", seqno) } if rows, err := bdb.ListMillLeases(); err != nil || len(rows) != 0 { t.Fatalf("durable leases after successful retry = %+v, err = %v; want none", rows, err) }}