package placement import ( "strconv" "testing" "github.com/nspcc-dev/neofs-api-go/pkg/container" "github.com/nspcc-dev/neofs-api-go/pkg/netmap" "github.com/nspcc-dev/neofs-api-go/pkg/object" "github.com/stretchr/testify/require" ) type testBuilder struct { vectors []netmap.Nodes } func (b testBuilder) BuildPlacement(*object.Address, *netmap.PlacementPolicy) ([]netmap.Nodes, error) { return b.vectors, nil } func testNode(v uint32) (n netmap.NodeInfo) { n.SetAddress("/ip4/0.0.0.0/tcp/" + strconv.Itoa(int(v))) return n } func flattenVectors(vs []netmap.Nodes) netmap.Nodes { v := make(netmap.Nodes, 0) for i := range vs { v = append(v, vs[i]...) } return v } func copyVectors(v []netmap.Nodes) []netmap.Nodes { vc := make([]netmap.Nodes, 0, len(v)) for i := range v { ns := make(netmap.Nodes, len(v[i])) copy(ns, v[i]) vc = append(vc, ns) } return vc } func testPlacement(t *testing.T, ss, rs []int) ([]netmap.Nodes, *container.Container) { nodes := make([]netmap.Nodes, 0, len(rs)) replicas := make([]*netmap.Replica, 0, len(rs)) num := uint32(0) for i := range ss { ns := make([]netmap.NodeInfo, 0, ss[i]) for j := 0; j < ss[i]; j++ { ns = append(ns, testNode(num)) num++ } nodes = append(nodes, netmap.NodesFromInfo(ns)) s := new(netmap.Replica) s.SetCount(uint32(rs[i])) replicas = append(replicas, s) } policy := new(netmap.PlacementPolicy) policy.SetReplicas(replicas...) return nodes, container.New(container.WithPolicy(policy)) } func TestTraverserObjectScenarios(t *testing.T) { t.Run("search scenario", func(t *testing.T) { selectors := []int{2, 3} replicas := []int{1, 2} nodes, cnr := testPlacement(t, selectors, replicas) nodesCopy := copyVectors(nodes) tr, err := NewTraverser( ForContainer(cnr), UseBuilder(&testBuilder{vectors: nodesCopy}), WithoutSuccessTracking(), ) require.NoError(t, err) for i := range selectors { addrs := tr.Next() require.Len(t, addrs, len(nodes[i])) for j, n := range nodes[i] { require.Equal(t, n.Address(), addrs[j].String()) } } require.Empty(t, tr.Next()) require.True(t, tr.Success()) }) t.Run("read scenario", func(t *testing.T) { selectors := []int{5, 3} replicas := []int{2, 2} nodes, cnr := testPlacement(t, selectors, replicas) nodesCopy := copyVectors(nodes) tr, err := NewTraverser( ForContainer(cnr), UseBuilder(&testBuilder{vectors: nodesCopy}), SuccessAfter(1), ) require.NoError(t, err) fn := func(curVector int) { for i := 0; i < selectors[curVector]; i++ { addrs := tr.Next() require.Len(t, addrs, 1) require.Equal(t, nodes[curVector][i].Address(), addrs[0].String()) } require.Empty(t, tr.Next()) require.False(t, tr.Success()) tr.SubmitSuccess() } for i := range selectors { fn(i) if i < len(selectors)-1 { require.False(t, tr.Success()) } else { require.True(t, tr.Success()) } } }) t.Run("put scenario", func(t *testing.T) { selectors := []int{5, 3} replicas := []int{2, 2} nodes, cnr := testPlacement(t, selectors, replicas) nodesCopy := copyVectors(nodes) tr, err := NewTraverser( ForContainer(cnr), UseBuilder(&testBuilder{vectors: nodesCopy}), ) require.NoError(t, err) fn := func(curVector int) { for i := 0; i+replicas[curVector] < selectors[curVector]; i += replicas[curVector] { addrs := tr.Next() require.Len(t, addrs, replicas[curVector]) for j := range addrs { require.Equal(t, nodes[curVector][i+j].Address(), addrs[j].String()) } } require.Empty(t, tr.Next()) require.False(t, tr.Success()) for i := 0; i < replicas[curVector]; i++ { tr.SubmitSuccess() } } for i := range selectors { fn(i) if i < len(selectors)-1 { require.False(t, tr.Success()) } else { require.True(t, tr.Success()) } } }) }