frostfs-node/pkg/services/object_manager/placement/traverser_test.go

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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/nspcc-dev/neofs-node/pkg/network"
"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 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)
for i := 0; i < len(nodes[0]); i++ {
require.NotNil(t, tr.Next())
}
n, err := network.AddressFromString(nodes[1][0].Address())
require.NoError(t, err)
require.Equal(t, []*network.Address{n}, tr.Next())
})
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())
}
}
})
t.Run("local operation scenario", func(t *testing.T) {
selectors := []int{2, 3}
replicas := []int{1, 2}
nodes, cnr := testPlacement(t, selectors, replicas)
tr, err := NewTraverser(
ForContainer(cnr),
UseBuilder(&testBuilder{
vectors: []netmap.Nodes{{nodes[1][1]}}, // single node (local)
}),
SuccessAfter(1),
)
require.NoError(t, err)
require.NotEmpty(t, tr.Next())
require.False(t, tr.Success())
// add 1 OK
tr.SubmitSuccess()
// nothing more to do
require.Empty(t, tr.Next())
// common success
require.True(t, tr.Success())
})
}