[#1427] object: Fix Put for EC object when node unavailable

There might be situation when context canceled earlier than traverser move to another part of the nodes.
To avoid this, need to wait for the result from concurrent put at each traverser iteration.

Signed-off-by: Anton Nikiforov <an.nikiforov@yadro.com>

pkg/services/object/common/writer/ec.go

@@ -197,14 +197,15 @@ func (e *ECWriter) writeRawObject(ctx context.Context, obj *objectSDK.Object) er
 	if err != nil {
 		return err
 	}
+	partsProcessed := make([]atomic.Bool, len(parts))
 	objID, _ := obj.ID()
 	t, err := placement.NewTraverser(append(e.PlacementOpts, placement.ForObject(objID))...)
 	if err != nil {
 		return err
 	}
 
-	eg, egCtx := errgroup.WithContext(ctx)
 	for {
+		eg, egCtx := errgroup.WithContext(ctx)
 		nodes := t.Next()
 		if len(nodes) == 0 {
 			break
@@ -216,13 +217,20 @@ func (e *ECWriter) writeRawObject(ctx context.Context, obj *objectSDK.Object) er
 		}
 
 		for idx := range parts {
-			eg.Go(func() error {
-				return e.writePart(egCtx, parts[idx], idx, nodes, visited)
-			})
-			t.SubmitSuccess()
+			if !partsProcessed[idx].Load() {
+				eg.Go(func() error {
+					err := e.writePart(egCtx, parts[idx], idx, nodes, visited)
+					if err == nil {
+						partsProcessed[idx].Store(true)
+						t.SubmitSuccess()
+					}
+					return err
+				})
+			}
 		}
+		err = eg.Wait()
 	}
-	if err := eg.Wait(); err != nil {
+	if err != nil {
 		return errIncompletePut{
 			singleErr: err,
 		}

pkg/services/object/common/writer/ec_test.go

@@ -0,0 +1,191 @@
+package writer
+
+import (
+	"bytes"
+	"context"
+	"crypto/rand"
+	"crypto/sha256"
+	"errors"
+	"fmt"
+	"strconv"
+	"testing"
+
+	rawclient "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/rpc/client"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/client"
+	netmapcore "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/netmap"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/network"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object_manager/placement"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/checksum"
+	apiclient "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	cidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id/test"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
+	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	oidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id/test"
+	usertest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user/test"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/version"
+	"git.frostfs.info/TrueCloudLab/tzhash/tz"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/panjf2000/ants/v2"
+	"github.com/stretchr/testify/require"
+)
+
+type testPlacementBuilder struct {
+	vectors [][]netmap.NodeInfo
+}
+
+func (p *testPlacementBuilder) BuildPlacement(_ cid.ID, _ *oid.ID, _ netmap.PlacementPolicy) (
+	[][]netmap.NodeInfo, error,
+) {
+	arr := make([]netmap.NodeInfo, len(p.vectors[0]))
+	copy(arr, p.vectors[0])
+	return [][]netmap.NodeInfo{arr}, nil
+}
+
+type nmKeys struct{}
+
+func (nmKeys) IsLocalKey(_ []byte) bool {
+	return false
+}
+
+type clientConstructor struct {
+	vectors [][]netmap.NodeInfo
+}
+
+func (c clientConstructor) Get(info client.NodeInfo) (client.MultiAddressClient, error) {
+	if bytes.Equal(info.PublicKey(), c.vectors[0][0].PublicKey()) ||
+		bytes.Equal(info.PublicKey(), c.vectors[0][1].PublicKey()) {
+		return multiAddressClient{err: errors.New("node unavailable")}, nil
+	}
+	return multiAddressClient{}, nil
+}
+
+type multiAddressClient struct {
+	client.MultiAddressClient
+	err error
+}
+
+func (c multiAddressClient) ObjectPutSingle(_ context.Context, _ apiclient.PrmObjectPutSingle) (*apiclient.ResObjectPutSingle, error) {
+	if c.err != nil {
+		return nil, c.err
+	}
+	return &apiclient.ResObjectPutSingle{}, nil
+}
+
+func (c multiAddressClient) ReportError(error) {
+}
+
+func (multiAddressClient) RawForAddress(context.Context, network.Address, func(cli *rawclient.Client) error) error {
+	return nil
+}
+
+func TestECWriter(t *testing.T) {
+	// Create container with policy EC 1.1
+	cnr := container.Container{}
+	p1 := netmap.PlacementPolicy{}
+	p1.SetContainerBackupFactor(1)
+	x1 := netmap.ReplicaDescriptor{}
+	x1.SetECDataCount(1)
+	x1.SetECParityCount(1)
+	p1.AddReplicas(x1)
+	cnr.SetPlacementPolicy(p1)
+	cnr.SetAttribute("cnr", "cnr1")
+
+	cid := cidtest.ID()
+
+	// Create 4 nodes, 2 nodes for chunks,
+	// 2 nodes for the case when the first two will fail.
+	ns, _ := testNodeMatrix(t, []int{4})
+
+	data := make([]byte, 100)
+	_, _ = rand.Read(data)
+	ver := version.Current()
+
+	var csum checksum.Checksum
+	csum.SetSHA256(sha256.Sum256(data))
+
+	var csumTZ checksum.Checksum
+	csumTZ.SetTillichZemor(tz.Sum(csum.Value()))
+
+	obj := objectSDK.New()
+	obj.SetID(oidtest.ID())
+	obj.SetOwnerID(usertest.ID())
+	obj.SetContainerID(cid)
+	obj.SetVersion(&ver)
+	obj.SetPayload(data)
+	obj.SetPayloadSize(uint64(len(data)))
+	obj.SetPayloadChecksum(csum)
+	obj.SetPayloadHomomorphicHash(csumTZ)
+
+	// Builder return nodes without sort by hrw
+	builder := &testPlacementBuilder{
+		vectors: ns,
+	}
+
+	ownerKey, err := keys.NewPrivateKey()
+	require.NoError(t, err)
+
+	pool, err := ants.NewPool(4, ants.WithNonblocking(true))
+	require.NoError(t, err)
+
+	log, err := logger.NewLogger(nil)
+	require.NoError(t, err)
+
+	var n nmKeys
+	ecw := ECWriter{
+		Config: &Config{
+			NetmapKeys:        n,
+			RemotePool:        pool,
+			Logger:            log,
+			ClientConstructor: clientConstructor{vectors: ns},
+		},
+		PlacementOpts: append(
+			[]placement.Option{placement.UseBuilder(builder), placement.ForContainer(cnr)},
+			placement.WithCopyNumbers(nil)), // copies number ignored for EC
+		Container:       cnr,
+		Key:             &ownerKey.PrivateKey,
+		Relay:           nil,
+		ObjectMetaValid: true,
+	}
+
+	err = ecw.WriteObject(context.Background(), obj)
+	require.NoError(t, err)
+}
+
+func testNodeMatrix(t testing.TB, dim []int) ([][]netmap.NodeInfo, [][]string) {
+	mNodes := make([][]netmap.NodeInfo, len(dim))
+	mAddr := make([][]string, len(dim))
+
+	for i := range dim {
+		ns := make([]netmap.NodeInfo, dim[i])
+		as := make([]string, dim[i])
+
+		for j := range dim[i] {
+			a := fmt.Sprintf("/ip4/192.168.0.%s/tcp/%s",
+				strconv.Itoa(i),
+				strconv.Itoa(60000+j),
+			)
+
+			var ni netmap.NodeInfo
+			ni.SetNetworkEndpoints(a)
+			ni.SetPublicKey([]byte(a))
+
+			var na network.AddressGroup
+
+			err := na.FromIterator(netmapcore.Node(ni))
+			require.NoError(t, err)
+
+			as[j] = network.StringifyGroup(na)
+
+			ns[j] = ni
+		}
+
+		mNodes[i] = ns
+		mAddr[i] = as
+	}
+
+	return mNodes, mAddr
+}