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[#299] client: Do not use pointers to required response fields

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In previous implementation `client` package provided access to nested
response fields as pointers to them. This caused clients to handle nil
cases even when the field presence in the response is required.

Avoid returning pointers to required fields in response getters. This
also reduces reference counter load and allows fields to be decoded
directly without additional assignment.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
This commit is contained in:
Leonard Lyubich 2022-08-05 11:56:49 +04:00 committed by Pavel Karpy
parent 30bf79f075
commit 4e31b4f231
10 changed files with 150 additions and 160 deletions
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25
client/accounting.go
View file

@ -2,8 +2,6 @@ package client
import (
"context"
"errors"
"fmt"
v2accounting "github.com/nspcc-dev/neofs-api-go/v2/accounting"
"github.com/nspcc-dev/neofs-api-go/v2/refs"
@ -32,17 +30,11 @@ func (x *PrmBalanceGet) SetAccount(id user.ID) {
type ResBalanceGet struct {
statusRes
amount *accounting.Decimal
}
func (x *ResBalanceGet) setAmount(v *accounting.Decimal) {
x.amount = v
amount accounting.Decimal
}
// Amount returns current amount of funds on the NeoFS account as decimal number.
//
// Client doesn't retain value so modification is safe.
func (x ResBalanceGet) Amount() *accounting.Decimal {
func (x ResBalanceGet) Amount() accounting.Decimal {
return x.amount
}
@ -96,21 +88,18 @@ func (c *Client) BalanceGet(ctx context.Context, prm PrmBalanceGet) (*ResBalance
cc.result = func(r responseV2) {
resp := r.(*v2accounting.BalanceResponse)
const fieldBalance = "balance"
bal := resp.GetBody().GetBalance()
if bal == nil {
cc.err = errors.New("missing balance field")
cc.err = newErrMissingResponseField(fieldBalance)
return
}
var d accounting.Decimal
cc.err = d.ReadFromV2(*bal)
cc.err = res.amount.ReadFromV2(*bal)
if cc.err != nil {
cc.err = fmt.Errorf("invalid balance: %w", cc.err)
return
cc.err = newErrInvalidResponseField(fieldBalance, cc.err)
}
res.setAmount(&d)
}
// process call

2
client/common.go
View file

@ -251,7 +251,7 @@ func (x *contextCall) close() bool {
x.result(x.resp)
}
return true
return x.err == nil
}
// goes through all stages of sending a request and processing a response. Returns true if successful.

77
client/container.go
View file

@ -54,22 +54,16 @@ func (x *PrmContainerPut) WithinSession(s session.Container) {
type ResContainerPut struct {
statusRes
id *cid.ID
id cid.ID
}
// ID returns identifier of the container declared to be stored in the system.
// Used as a link to information about the container (in particular, you can
// asynchronously check if the save was successful).
//
// Client doesn't retain value so modification is safe.
func (x ResContainerPut) ID() *cid.ID {
func (x ResContainerPut) ID() cid.ID {
return x.id
}
func (x *ResContainerPut) setID(id *cid.ID) {
x.id = id
}
// ContainerPut sends request to save container in NeoFS.
//
// Exactly one return value is non-nil. By default, server status is returned in res structure.
@ -150,17 +144,19 @@ func (c *Client) ContainerPut(ctx context.Context, prm PrmContainerPut) (*ResCon
}
cc.result = func(r responseV2) {
resp := r.(*v2container.PutResponse)
var cID *cid.ID
const fieldCnrID = "container ID"
cidV2 := resp.GetBody().GetContainerID()
if cidV2 != nil {
var c cid.ID
_ = c.ReadFromV2(*cidV2)
cID = &c
if cidV2 == nil {
cc.err = newErrMissingResponseField(fieldCnrID)
return
}
res.setID(cID)
cc.err = res.id.ReadFromV2(*cidV2)
if cc.err != nil {
cc.err = newErrInvalidResponseField(fieldCnrID, cc.err)
}
}
// process call
@ -200,10 +196,6 @@ func (x ResContainerGet) Container() container.Container {
return x.cnr
}
func (x *ResContainerGet) setContainer(cnr container.Container) {
x.cnr = cnr
}
// ContainerGet reads NeoFS container by ID.
//
// Exactly one return value is non-nil. By default, server status is returned in res structure.
@ -261,15 +253,10 @@ func (c *Client) ContainerGet(ctx context.Context, prm PrmContainerGet) (*ResCon
return
}
var cnr container.Container
err := cnr.ReadFromV2(*cnrV2)
if err != nil {
cc.err = fmt.Errorf("invalid container in response: %w", err)
return
cc.err = res.cnr.ReadFromV2(*cnrV2)
if cc.err != nil {
cc.err = fmt.Errorf("invalid container in response: %w", cc.err)
}
res.setContainer(cnr)
}
// process call
@ -309,10 +296,6 @@ func (x ResContainerList) Containers() []cid.ID {
return x.ids
}
func (x *ResContainerList) setContainers(ids []cid.ID) {
x.ids = ids
}
// ContainerList requests identifiers of the account-owned containers.
//
// Exactly one return value is non-nil. By default, server status is returned in res structure.
@ -364,13 +347,15 @@ func (c *Client) ContainerList(ctx context.Context, prm PrmContainerList) (*ResC
cc.result = func(r responseV2) {
resp := r.(*v2container.ListResponse)
ids := make([]cid.ID, len(resp.GetBody().GetContainerIDs()))
res.ids = make([]cid.ID, len(resp.GetBody().GetContainerIDs()))
for i, cidV2 := range resp.GetBody().GetContainerIDs() {
_ = ids[i].ReadFromV2(cidV2)
cc.err = res.ids[i].ReadFromV2(cidV2)
if cc.err != nil {
cc.err = fmt.Errorf("invalid ID in the response: %w", cc.err)
return
}
}
res.setContainers(ids)
}
// process call
@ -527,20 +512,14 @@ func (x *PrmContainerEACL) SetContainer(id cid.ID) {
type ResContainerEACL struct {
statusRes
table *eacl.Table
table eacl.Table
}
// Table returns eACL table of the requested container.
//
// Client doesn't retain value so modification is safe.
func (x ResContainerEACL) Table() *eacl.Table {
func (x ResContainerEACL) Table() eacl.Table {
return x.table
}
func (x *ResContainerEACL) setTable(table *eacl.Table) {
x.table = table
}
// ContainerEACL reads eACL table of the NeoFS container.
//
// Exactly one return value is non-nil. By default, server status is returned in res structure.
@ -594,11 +573,13 @@ func (c *Client) ContainerEACL(ctx context.Context, prm PrmContainerEACL) (*ResC
cc.result = func(r responseV2) {
resp := r.(*v2container.GetExtendedACLResponse)
body := resp.GetBody()
eACL := resp.GetBody().GetEACL()
if eACL == nil {
cc.err = newErrMissingResponseField("eACL")
return
}
table := eacl.NewTableFromV2(body.GetEACL())
res.setTable(table)
res.table = *eacl.NewTableFromV2(eACL)
}
// process call
@ -833,7 +814,7 @@ func SyncContainerWithNetwork(ctx context.Context, cnr *container.Container, c *
return fmt.Errorf("network info call: %w", err)
}
container.ApplyNetworkConfig(cnr, *res.Info())
container.ApplyNetworkConfig(cnr, res.Info())
return nil
}

12
client/errors.go
View file

@ -2,6 +2,7 @@ package client
import (
"errors"
"fmt"
apistatus "github.com/nspcc-dev/neofs-sdk-go/client/status"
)
@ -92,3 +93,14 @@ func IsErrSessionNotFound(err error) bool {
return true
}
}
// returns error describing missing field with the given name.
func newErrMissingResponseField(name string) error {
return fmt.Errorf("missing %s field in the response", name)
}
// returns error describing invalid field (according to the NeoFS protocol)
// with the given name and format violation err.
func newErrInvalidResponseField(name string, err error) error {
return fmt.Errorf("invalid %s field in the response: %w", name, err)
}

80
client/netmap.go
View file

@ -2,8 +2,6 @@ package client
import (
"context"
"errors"
"fmt"
v2netmap "github.com/nspcc-dev/neofs-api-go/v2/netmap"
rpcapi "github.com/nspcc-dev/neofs-api-go/v2/rpc"
@ -21,33 +19,21 @@ type PrmEndpointInfo struct {
type ResEndpointInfo struct {
statusRes
version *version.Version
version version.Version
ni *netmap.NodeInfo
ni netmap.NodeInfo
}
// LatestVersion returns latest NeoFS API protocol's version in use.
//
// Client doesn't retain value so modification is safe.
func (x ResEndpointInfo) LatestVersion() *version.Version {
func (x ResEndpointInfo) LatestVersion() version.Version {
return x.version
}
func (x *ResEndpointInfo) setLatestVersion(ver *version.Version) {
x.version = ver
}
// NodeInfo returns information about the NeoFS node served on the remote endpoint.
//
// Client doesn't retain value so modification is safe.
func (x ResEndpointInfo) NodeInfo() *netmap.NodeInfo {
func (x ResEndpointInfo) NodeInfo() netmap.NodeInfo {
return x.ni
}
func (x *ResEndpointInfo) setNodeInfo(info *netmap.NodeInfo) {
x.ni = info
}
// EndpointInfo requests information about the storage node served on the remote endpoint.
//
// Method can be used as a health check to see if node is alive and responds to requests.
@ -93,31 +79,33 @@ func (c *Client) EndpointInfo(ctx context.Context, prm PrmEndpointInfo) (*ResEnd
body := resp.GetBody()
var ver version.Version
if v2ver := body.GetVersion(); v2ver != nil {
cc.err = ver.ReadFromV2(*v2ver)
if cc.err != nil {
cc.err = fmt.Errorf("invalid version: %w", cc.err)
return
}
}
res.setLatestVersion(&ver)
const fieldVersion = "version"
nodeV2 := body.GetNodeInfo()
if nodeV2 == nil {
cc.err = errors.New("missing node info in response body")
verV2 := body.GetVersion()
if verV2 == nil {
cc.err = newErrMissingResponseField(fieldVersion)
return
}
var node netmap.NodeInfo
cc.err = node.ReadFromV2(*nodeV2)
cc.err = res.version.ReadFromV2(*verV2)
if cc.err != nil {
cc.err = fmt.Errorf("invalid node info: %w", cc.err)
cc.err = newErrInvalidResponseField(fieldVersion, cc.err)
return
}
res.setNodeInfo(&node)
const fieldNodeInfo = "node info"
nodeInfoV2 := body.GetNodeInfo()
if nodeInfoV2 == nil {
cc.err = newErrMissingResponseField(fieldNodeInfo)
return
}
cc.err = res.ni.ReadFromV2(*nodeInfoV2)
if cc.err != nil {
cc.err = newErrInvalidResponseField(fieldNodeInfo, cc.err)
return
}
}
// process call
@ -137,20 +125,14 @@ type PrmNetworkInfo struct {
type ResNetworkInfo struct {
statusRes
info *netmap.NetworkInfo
info netmap.NetworkInfo
}
// Info returns structured information about the NeoFS network.
//
// Client doesn't retain value so modification is safe.
func (x ResNetworkInfo) Info() *netmap.NetworkInfo {
func (x ResNetworkInfo) Info() netmap.NetworkInfo {
return x.info
}
func (x *ResNetworkInfo) setInfo(info *netmap.NetworkInfo) {
x.info = info
}
// NetworkInfo requests information about the NeoFS network of which the remote server is a part.
//
// Any client's internal or transport errors are returned as `error`.
@ -192,21 +174,19 @@ func (c *Client) NetworkInfo(ctx context.Context, prm PrmNetworkInfo) (*ResNetwo
cc.result = func(r responseV2) {
resp := r.(*v2netmap.NetworkInfoResponse)
const fieldNetInfo = "network info"
netInfoV2 := resp.GetBody().GetNetworkInfo()
if netInfoV2 == nil {
cc.err = errors.New("missing network info in response body")
cc.err = newErrMissingResponseField(fieldNetInfo)
return
}
var netInfo netmap.NetworkInfo
cc.err = netInfo.ReadFromV2(*netInfoV2)
cc.err = res.info.ReadFromV2(*netInfoV2)
if cc.err != nil {
cc.err = fmt.Errorf("invalid network info: %w", cc.err)
cc.err = newErrInvalidResponseField(fieldNetInfo, cc.err)
return
}
res.setInfo(&netInfo)
}
// process call

27
client/object_delete.go
View file

@ -93,18 +93,12 @@ func (x *PrmObjectDelete) WithXHeaders(hs ...string) {
type ResObjectDelete struct {
statusRes
idTomb *v2refs.ObjectID
tomb oid.ID
}
// ReadTombstoneID reads identifier of the created tombstone object.
// Returns false if ID is missing (not read).
func (x ResObjectDelete) ReadTombstoneID(dst *oid.ID) bool {
if x.idTomb != nil {
_ = dst.ReadFromV2(*x.idTomb)
return true
}
return false
// Tombstone returns identifier of the created tombstone object.
func (x ResObjectDelete) Tombstone() oid.ID {
return x.tomb
}
// ObjectDelete marks an object for deletion from the container using NeoFS API protocol.
@ -167,7 +161,18 @@ func (c *Client) ObjectDelete(ctx context.Context, prm PrmObjectDelete) (*ResObj
return rpcapi.DeleteObject(&c.c, &req, client.WithContext(ctx))
}
cc.result = func(r responseV2) {
res.idTomb = r.(*v2object.DeleteResponse).GetBody().GetTombstone().GetObjectID()
const fieldTombstone = "tombstone"
idTombV2 := r.(*v2object.DeleteResponse).GetBody().GetTombstone().GetObjectID()
if idTombV2 == nil {
cc.err = newErrMissingResponseField(fieldTombstone)
return
}
cc.err = res.tomb.ReadFromV2(*idTombV2)
if cc.err != nil {
cc.err = newErrInvalidResponseField(fieldTombstone, cc.err)
}
}
// process call

3
client/object_hash.go
View file

@ -195,6 +195,9 @@ func (c *Client) ObjectHash(ctx context.Context, prm PrmObjectHash) (*ResObjectH
}
cc.result = func(r responseV2) {
res.checksums = r.(*v2object.GetRangeHashResponse).GetBody().GetHashList()
if len(res.checksums) == 0 {
cc.err = newErrMissingResponseField("hash list")
}
}
// process call

36
client/object_put.go
View file

@ -32,20 +32,12 @@ func (x *PrmObjectPutInit) SetCopiesNumber(copiesNumber uint32) {
type ResObjectPut struct {
statusRes
resp v2object.PutResponse
obj oid.ID
}
// ReadStoredObjectID reads identifier of the saved object.
// Returns false if ID is missing (not read).
func (x *ResObjectPut) ReadStoredObjectID(id *oid.ID) bool {
idv2 := x.resp.GetBody().GetObjectID()
if idv2 == nil {
return false
}
_ = id.ReadFromV2(*idv2)
return true
// StoredObjectID returns identifier of the saved object.
func (x ResObjectPut) StoredObjectID() oid.ID {
return x.obj
}
// ObjectWriter is designed to write one object to NeoFS system.
@ -216,13 +208,15 @@ func (c *Client) ObjectPutInit(ctx context.Context, prm PrmObjectPutInit) (*Obje
var (
res ResObjectPut
w ObjectWriter
resp v2object.PutResponse
)
ctx, w.cancelCtxStream = context.WithCancel(ctx)
w.partInit.SetCopiesNumber(prm.copyNum)
stream, err := rpcapi.PutObject(&c.c, &res.resp, client.WithContext(ctx))
stream, err := rpcapi.PutObject(&c.c, &resp, client.WithContext(ctx))
if err != nil {
return nil, fmt.Errorf("open stream: %w", err)
}
@ -242,11 +236,25 @@ func (c *Client) ObjectPutInit(ctx context.Context, prm PrmObjectPutInit) (*Obje
c.initCallContext(&w.ctxCall)
w.ctxCall.req = &req
w.ctxCall.statusRes = &res
w.ctxCall.resp = &res.resp
w.ctxCall.resp = &resp
w.ctxCall.wReq = func() error {
return stream.Write(&req)
}
w.ctxCall.closer = stream.Close
w.ctxCall.result = func(r responseV2) {
const fieldID = "ID"
idV2 := r.(*v2object.PutResponse).GetBody().GetObjectID()
if idV2 == nil {
w.ctxCall.err = newErrMissingResponseField(fieldID)
return
}
w.ctxCall.err = res.obj.ReadFromV2(*idV2)
if w.ctxCall.err != nil {
w.ctxCall.err = newErrInvalidResponseField(fieldID, w.ctxCall.err)
}
}
return &w, nil
}

37
pool/pool.go
View file

@ -289,7 +289,9 @@ func (c *clientWrapper) balanceGet(ctx context.Context, prm PrmBalanceGet) (*acc
return nil, fmt.Errorf("balance get on client: %w", err)
}
return res.Amount(), nil
bal := res.Amount()
return &bal, nil
}
// containerPut invokes sdkClient.ContainerPut parse response status to error and return result as is.
@ -310,12 +312,14 @@ func (c *clientWrapper) containerPut(ctx context.Context, prm PrmContainerPut) (
prm.waitParams.setDefaults()
}
err = waitForContainerPresence(ctx, c, res.ID(), &prm.waitParams)
idCnr := res.ID()
err = waitForContainerPresence(ctx, c, idCnr, &prm.waitParams)
if err = c.handleError(nil, err); err != nil {
return nil, fmt.Errorf("wait container presence on client: %w", err)
}
return res.ID(), nil
return &idCnr, nil
}
// containerGet invokes sdkClient.ContainerGet parse response status to error and return result as is.
@ -400,7 +404,10 @@ func (c *clientWrapper) containerEACL(ctx context.Context, prm PrmContainerEACL)
if err = c.handleError(st, err); err != nil {
return nil, fmt.Errorf("get eacl on client: %w", err)
}
return res.Table(), nil
eACL := res.Table()
return &eACL, nil
}
// containerSetEACL invokes sdkClient.ContainerSetEACL parse response status to error.
@ -454,7 +461,10 @@ func (c *clientWrapper) endpointInfo(ctx context.Context, _ prmEndpointInfo) (*n
if err = c.handleError(st, err); err != nil {
return nil, fmt.Errorf("endpoint info on client: %w", err)
}
return res.NodeInfo(), nil
nodeInfo := res.NodeInfo()
return &nodeInfo, nil
}
// networkInfo invokes sdkClient.NetworkInfo parse response status to error and return result as is.
@ -470,7 +480,10 @@ func (c *clientWrapper) networkInfo(ctx context.Context, _ prmNetworkInfo) (*net
if err = c.handleError(st, err); err != nil {
return nil, fmt.Errorf("network info on client: %w", err)
}
return res.Info(), nil
netInfo := res.Info()
return &netInfo, nil
}
// objectPut writes object to NeoFS.
@ -551,11 +564,7 @@ func (c *clientWrapper) objectPut(ctx context.Context, prm PrmObjectPut) (*oid.I
return nil, fmt.Errorf("client failure: %w", err)
}
var id oid.ID
if !res.ReadStoredObjectID(&id) {
return nil, errors.New("missing ID of the stored object")
}
id := res.StoredObjectID()
return &id, nil
}
@ -2167,11 +2176,9 @@ func (p Pool) Statistic() Statistic {
}
// waitForContainerPresence waits until the container is found on the NeoFS network.
func waitForContainerPresence(ctx context.Context, cli client, cnrID *cid.ID, waitParams *WaitParams) error {
func waitForContainerPresence(ctx context.Context, cli client, cnrID cid.ID, waitParams *WaitParams) error {
var prm PrmContainerGet
if cnrID != nil {
prm.SetContainerID(*cnrID)
}
prm.SetContainerID(cnrID)
return waitFor(ctx, waitParams, func(ctx context.Context) bool {
_, err := cli.containerGet(ctx, prm)

11
pool/pool_test.go
View file

@ -11,6 +11,7 @@ import (
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
apistatus "github.com/nspcc-dev/neofs-sdk-go/client/status"
cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
neofsecdsa "github.com/nspcc-dev/neofs-sdk-go/crypto/ecdsa"
"github.com/nspcc-dev/neofs-sdk-go/object"
oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
@ -479,7 +480,9 @@ func TestWaitPresence(t *testing.T) {
cancel()
}()
err := waitForContainerPresence(ctx, mockCli, nil, &WaitParams{
var idCnr cid.ID
err := waitForContainerPresence(ctx, mockCli, idCnr, &WaitParams{
timeout: 120 * time.Second,
pollInterval: 5 * time.Second,
})
@ -489,7 +492,8 @@ func TestWaitPresence(t *testing.T) {
t.Run("context deadline exceeded", func(t *testing.T) {
ctx := context.Background()
err := waitForContainerPresence(ctx, mockCli, nil, &WaitParams{
var idCnr cid.ID
err := waitForContainerPresence(ctx, mockCli, idCnr, &WaitParams{
timeout: 500 * time.Millisecond,
pollInterval: 5 * time.Second,
})
@ -499,7 +503,8 @@ func TestWaitPresence(t *testing.T) {
t.Run("ok", func(t *testing.T) {
ctx := context.Background()
err := waitForContainerPresence(ctx, mockCli, nil, &WaitParams{
var idCnr cid.ID
err := waitForContainerPresence(ctx, mockCli, idCnr, &WaitParams{
timeout: 10 * time.Second,
pollInterval: 500 * time.Millisecond,
})