コード例 #1
0
ファイル: lease_test.go プロジェクト: BramGruneir/cockroach
func TestReacquireLease(t *testing.T) {
	defer leaktest.AfterTest(t)()
	s, db := setup(t)
	defer s.Stopper().Stop()

	ctx := context.Background()
	manual := hlc.NewManualClock(123)
	clock := hlc.NewClock(manual.UnixNano, time.Nanosecond)
	lm := client.NewLeaseManager(db, clock, client.LeaseManagerOptions{ClientID: clientID1})

	l, err := lm.AcquireLease(ctx, leaseKey)
	if err != nil {
		t.Fatal(err)
	}

	// We allow re-acquiring the same lease as long as the client ID is
	// the same to allow a client to reacquire its own leases rather than
	// having to wait them out if it crashes and restarts.
	l, err = lm.AcquireLease(ctx, leaseKey)
	if err != nil {
		t.Fatal(err)
	}
	if err := lm.ReleaseLease(ctx, l); err != nil {
		t.Fatal(err)
	}
}
コード例 #2
0
ファイル: lease_test.go プロジェクト: BramGruneir/cockroach
func TestAcquireAndRelease(t *testing.T) {
	defer leaktest.AfterTest(t)()
	s, db := setup(t)
	defer s.Stopper().Stop()

	ctx := context.Background()
	manual := hlc.NewManualClock(123)
	clock := hlc.NewClock(manual.UnixNano, time.Nanosecond)
	lm := client.NewLeaseManager(db, clock, client.LeaseManagerOptions{ClientID: clientID1})

	l, err := lm.AcquireLease(ctx, leaseKey)
	if err != nil {
		t.Fatal(err)
	}
	if err := lm.ReleaseLease(ctx, l); err != nil {
		t.Fatal(err)
	}
	if err := lm.ReleaseLease(ctx, l); !testutils.IsError(err, "unexpected value") {
		t.Fatal(err)
	}

	l, err = lm.AcquireLease(ctx, leaseKey)
	if err != nil {
		t.Fatal(err)
	}
	if err := lm.ReleaseLease(ctx, l); err != nil {
		t.Fatal(err)
	}
}
コード例 #3
0
ファイル: lease_test.go プロジェクト: BramGruneir/cockroach
func TestLeasesMultipleClients(t *testing.T) {
	defer leaktest.AfterTest(t)()
	s, db := setup(t)
	defer s.Stopper().Stop()

	ctx := context.Background()
	manual1 := hlc.NewManualClock(123)
	clock1 := hlc.NewClock(manual1.UnixNano, time.Nanosecond)
	manual2 := hlc.NewManualClock(123)
	clock2 := hlc.NewClock(manual2.UnixNano, time.Nanosecond)
	lm1 := client.NewLeaseManager(db, clock1, client.LeaseManagerOptions{ClientID: clientID1})
	lm2 := client.NewLeaseManager(db, clock2, client.LeaseManagerOptions{ClientID: clientID2})

	l1, err := lm1.AcquireLease(ctx, leaseKey)
	if err != nil {
		t.Fatal(err)
	}
	_, err = lm2.AcquireLease(ctx, leaseKey)
	if !testutils.IsError(err, "is not available until") {
		t.Fatalf("didn't get expected error trying to acquire already held lease: %v", err)
	}
	if _, ok := err.(*client.LeaseNotAvailableError); !ok {
		t.Fatalf("expected LeaseNotAvailableError, got %v", err)
	}

	// Ensure a lease can be "stolen" after it's expired.
	manual2.Increment(int64(client.DefaultLeaseDuration) + 1)
	l2, err := lm2.AcquireLease(ctx, leaseKey)
	if err != nil {
		t.Fatal(err)
	}

	// lm1's clock indicates that its lease should still be valid, but it doesn't
	// own it anymore.
	manual1.Increment(int64(client.DefaultLeaseDuration) / 2)
	if err := lm1.ExtendLease(ctx, l1); !testutils.IsError(err, "out of sync with DB state") {
		t.Fatalf("didn't get expected error trying to extend expired lease: %v", err)
	}
	if err := lm1.ReleaseLease(ctx, l1); !testutils.IsError(err, "unexpected value") {
		t.Fatalf("didn't get expected error trying to release stolen lease: %v", err)
	}

	if err := lm2.ReleaseLease(ctx, l2); err != nil {
		t.Fatal(err)
	}
}
コード例 #4
0
ファイル: migrations.go プロジェクト: BramGruneir/cockroach
// NewManager initializes and returns a new Manager object.
func NewManager(
	stopper *stop.Stopper, db *client.DB, executor *sql.Executor, clock *hlc.Clock, clientID string,
) *Manager {
	opts := client.LeaseManagerOptions{
		ClientID:      clientID,
		LeaseDuration: leaseDuration,
	}
	return &Manager{
		stopper:      stopper,
		leaseManager: client.NewLeaseManager(db, clock, opts),
		db:           db,
		sqlExecutor:  executor,
	}
}
コード例 #5
0
ファイル: lease_test.go プロジェクト: BramGruneir/cockroach
func TestExtendLease(t *testing.T) {
	defer leaktest.AfterTest(t)()
	s, db := setup(t)
	defer s.Stopper().Stop()

	ctx := context.Background()
	manual := hlc.NewManualClock(123)
	clock := hlc.NewClock(manual.UnixNano, time.Nanosecond)
	lm := client.NewLeaseManager(db, clock, client.LeaseManagerOptions{ClientID: clientID1})

	l, err := lm.AcquireLease(ctx, leaseKey)
	if err != nil {
		t.Fatal(err)
	}

	manual.Increment(int64(time.Second))
	timeRemainingBefore := lm.TimeRemaining(l)
	if err := lm.ExtendLease(ctx, l); err != nil {
		t.Fatal(err)
	}
	timeRemainingAfter := lm.TimeRemaining(l)
	if !(timeRemainingAfter > timeRemainingBefore) {
		t.Errorf("expected time remaining after renewal (%s) to be greater than before renewal (%s)",
			timeRemainingAfter, timeRemainingBefore)
	}

	manual.Increment(int64(client.DefaultLeaseDuration) + 1)
	if tr := lm.TimeRemaining(l); tr >= 0 {
		t.Errorf("expected negative time remaining on lease, got %s", tr)
	}
	if err := lm.ExtendLease(ctx, l); !testutils.IsError(err, "can't extend lease that expired") {
		t.Fatalf("didn't get expected error when renewing lease %+v: %v", l, err)
	}

	if err := lm.ReleaseLease(ctx, l); err != nil {
		t.Fatal(err)
	}
}