frostfs-node/pkg/services/object/internal/client/client.go

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package internal
import (
"bytes"
"context"
"crypto/ecdsa"
"errors"
"fmt"
"io"
coreclient "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/client"
"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/session"
)
type commonPrm struct {
cli coreclient.Client
key *ecdsa.PrivateKey
tokenSession *session.Object
tokenBearer *bearer.Token
local bool
xHeaders []string
}
// SetClient sets base client for ForstFS API communication.
//
// Required parameter.
func (x *commonPrm) SetClient(cli coreclient.Client) {
x.cli = cli
}
// SetPrivateKey sets private key to sign the request(s).
//
// Required parameter.
func (x *commonPrm) SetPrivateKey(key *ecdsa.PrivateKey) {
x.key = key
}
// SetSessionToken sets token of the session within which request should be sent.
//
// By default the request will be sent outside the session.
func (x *commonPrm) SetSessionToken(tok *session.Object) {
x.tokenSession = tok
}
// SetBearerToken sets bearer token to be attached to the request.
//
// By default token is not attached to the request.
func (x *commonPrm) SetBearerToken(tok *bearer.Token) {
x.tokenBearer = tok
}
// SetTTL sets time-to-live call option.
func (x *commonPrm) SetTTL(ttl uint32) {
x.local = ttl < 2
}
// SetXHeaders sets request X-Headers.
//
// By default X-Headers will not be attached to the request.
func (x *commonPrm) SetXHeaders(hs []string) {
x.xHeaders = hs
}
type readPrmCommon struct {
commonPrm
}
// SetNetmapEpoch sets the epoch number to be used to locate the objectSDK.
//
// By default current epoch on the server will be used.
func (x *readPrmCommon) SetNetmapEpoch(_ uint64) {
// FIXME(@fyrchik): https://git.frostfs.info/TrueCloudLab/frostfs-node/issues/465
}
// GetObjectPrm groups parameters of GetObject operation.
type GetObjectPrm struct {
readPrmCommon
ClientParams client.PrmObjectGet
obj oid.ID
}
// SetRawFlag sets raw flag of the request.
//
// By default request will not be raw.
func (x *GetObjectPrm) SetRawFlag() {
x.ClientParams.Raw = true
}
// SetAddress sets object address.
//
// Required parameter.
func (x *GetObjectPrm) SetAddress(addr oid.Address) {
x.obj = addr.Object()
cnr := addr.Container()
x.ClientParams.ContainerID = &cnr
x.ClientParams.ObjectID = &x.obj
}
// GetObjectRes groups the resulting values of GetObject operation.
type GetObjectRes struct {
obj *objectSDK.Object
}
// Object returns requested objectSDK.
func (x GetObjectRes) Object() *objectSDK.Object {
return x.obj
}
// GetObject reads the object by address.
//
// Client, context and key must be set.
//
// Returns any error which prevented the operation from completing correctly in error return.
// Returns:
// - error of type *objectSDK.SplitInfoError if object raw flag is set and requested object is virtual;
// - error of type *apistatus.ObjectAlreadyRemoved if the requested object is marked to be removed.
//
// GetObject ignores the provided session if it is not related to the requested objectSDK.
func GetObject(ctx context.Context, prm GetObjectPrm) (*GetObjectRes, error) {
// here we ignore session if it is opened for other object since such
// request will almost definitely fail. The case can occur, for example,
// when session is bound to the parent object and child object is requested.
if prm.tokenSession != nil && prm.tokenSession.AssertObject(prm.obj) {
prm.ClientParams.Session = prm.tokenSession
}
prm.ClientParams.XHeaders = prm.xHeaders
prm.ClientParams.BearerToken = prm.tokenBearer
prm.ClientParams.Local = prm.local
prm.ClientParams.Key = prm.key
rdr, err := prm.cli.ObjectGetInit(ctx, prm.ClientParams)
if err != nil {
return nil, fmt.Errorf("init object reading: %w", err)
}
var obj objectSDK.Object
if !rdr.ReadHeader(&obj) {
res, err := rdr.Close()
if err == nil {
// pull out an error from status
err = apistatus.ErrFromStatus(res.Status())
} else {
ReportError(prm.cli, err)
}
return nil, fmt.Errorf("read object header: %w", err)
}
buf := make([]byte, obj.PayloadSize())
_, err = rdr.Read(buf)
if err != nil && !errors.Is(err, io.EOF) {
return nil, fmt.Errorf("read payload: %w", err)
}
obj.SetPayload(buf)
return &GetObjectRes{
obj: &obj,
}, nil
}
// HeadObjectPrm groups parameters of HeadObject operation.
type HeadObjectPrm struct {
readPrmCommon
ClientParams client.PrmObjectHead
obj oid.ID
}
// SetRawFlag sets raw flag of the request.
//
// By default request will not be raw.
func (x *HeadObjectPrm) SetRawFlag() {
x.ClientParams.Raw = true
}
// SetAddress sets object address.
//
// Required parameter.
func (x *HeadObjectPrm) SetAddress(addr oid.Address) {
x.obj = addr.Object()
cnr := addr.Container()
x.ClientParams.ContainerID = &cnr
x.ClientParams.ObjectID = &x.obj
}
// HeadObjectRes groups the resulting values of GetObject operation.
type HeadObjectRes struct {
hdr *objectSDK.Object
}
// Header returns requested object header.
func (x HeadObjectRes) Header() *objectSDK.Object {
return x.hdr
}
// HeadObject reads object header by address.
//
// Client and key must be set.
//
// Returns any error which prevented the operation from completing correctly in error return.
// Returns:
//
// error of type *objectSDK.SplitInfoError if object raw flag is set and requested object is virtual;
// error of type *apistatus.ObjectAlreadyRemoved if the requested object is marked to be removed.
//
// HeadObject ignores the provided session if it is not related to the requested objectSDK.
func HeadObject(ctx context.Context, prm HeadObjectPrm) (*HeadObjectRes, error) {
// see details in same statement of GetObject
if prm.tokenSession != nil && prm.tokenSession.AssertObject(prm.obj) {
prm.ClientParams.Session = prm.tokenSession
}
prm.ClientParams.BearerToken = prm.tokenBearer
prm.ClientParams.Local = prm.local
prm.ClientParams.XHeaders = prm.xHeaders
cliRes, err := prm.cli.ObjectHead(ctx, prm.ClientParams)
if err == nil {
// pull out an error from status
err = apistatus.ErrFromStatus(cliRes.Status())
}
if err != nil {
return nil, fmt.Errorf("read object header from FrostFS: %w", err)
}
var hdr objectSDK.Object
if !cliRes.ReadHeader(&hdr) {
return nil, errors.New("missing object header in the response")
}
return &HeadObjectRes{
hdr: &hdr,
}, nil
}
// PayloadRangePrm groups parameters of PayloadRange operation.
type PayloadRangePrm struct {
readPrmCommon
ln uint64
ClientParams client.PrmObjectRange
obj oid.ID
}
// SetRawFlag sets raw flag of the request.
//
// By default request will not be raw.
func (x *PayloadRangePrm) SetRawFlag() {
x.ClientParams.Raw = true
}
// SetAddress sets object address.
//
// Required parameter.
func (x *PayloadRangePrm) SetAddress(addr oid.Address) {
x.obj = addr.Object()
cnr := addr.Container()
x.ClientParams.ContainerID = &cnr
x.ClientParams.ObjectID = &x.obj
}
// SetRange range of the object payload to be read.
//
// Required parameter.
func (x *PayloadRangePrm) SetRange(rng *objectSDK.Range) {
x.ClientParams.Offset = rng.GetOffset()
x.ln = rng.GetLength()
}
// PayloadRangeRes groups the resulting values of GetObject operation.
type PayloadRangeRes struct {
data []byte
}
// PayloadRange returns data of the requested payload range.
func (x PayloadRangeRes) PayloadRange() []byte {
return x.data
}
// maxInitialBufferSize is the maximum initial buffer size for PayloadRange result.
// We don't want to allocate a lot of space in advance because a query can
// fail with apistatus.ObjectOutOfRange status.
const maxInitialBufferSize = 1024 * 1024 // 1 MiB
// PayloadRange reads object payload range by address.
//
// Client and key must be set.
//
// Returns any error which prevented the operation from completing correctly in error return.
// Returns:
//
// error of type *objectSDK.SplitInfoError if object raw flag is set and requested object is virtual;
// error of type *apistatus.ObjectAlreadyRemoved if the requested object is marked to be removed;
// error of type *apistatus.ObjectOutOfRange if the requested range is too big.
//
// PayloadRange ignores the provided session if it is not related to the requested objectSDK.
func PayloadRange(ctx context.Context, prm PayloadRangePrm) (*PayloadRangeRes, error) {
// see details in same statement of GetObject
if prm.tokenSession != nil && prm.tokenSession.AssertObject(prm.obj) {
prm.ClientParams.Session = prm.tokenSession
}
prm.ClientParams.XHeaders = prm.xHeaders
prm.ClientParams.BearerToken = prm.tokenBearer
prm.ClientParams.Local = prm.local
prm.ClientParams.Length = prm.ln
rdr, err := prm.cli.ObjectRangeInit(ctx, prm.ClientParams)
if err != nil {
return nil, fmt.Errorf("init payload reading: %w", err)
}
if int64(prm.ln) < 0 {
// `CopyN` expects `int64`, this check ensures that the result is positive.
// On practice this means that we can return incorrect results for objects
// with size > 8_388 Petabytes, this will be fixed later with support for streaming.
return nil, new(apistatus.ObjectOutOfRange)
}
ln := prm.ln
if ln > maxInitialBufferSize {
ln = maxInitialBufferSize
}
w := bytes.NewBuffer(make([]byte, ln))
_, err = io.CopyN(w, rdr, int64(prm.ln))
if err != nil {
return nil, fmt.Errorf("read payload: %w", err)
}
return &PayloadRangeRes{
data: w.Bytes(),
}, nil
}
// PutObjectPrm groups parameters of PutObject operation.
type PutObjectPrm struct {
commonPrm
obj *objectSDK.Object
}
// SetObject sets object to be stored.
//
// Required parameter.
func (x *PutObjectPrm) SetObject(obj *objectSDK.Object) {
x.obj = obj
}
// PutObjectRes groups the resulting values of PutObject operation.
type PutObjectRes struct {
id oid.ID
}
// ID returns identifier of the stored objectSDK.
func (x PutObjectRes) ID() oid.ID {
return x.id
}
// PutObject saves the object in local storage of the remote node.
//
// Client and key must be set.
//
// Returns any error which prevented the operation from completing correctly in error return.
func PutObject(ctx context.Context, prm PutObjectPrm) (*PutObjectRes, error) {
ctx, span := tracing.StartSpanFromContext(ctx, "client.PutObject")
defer span.End()
prmCli := client.PrmObjectPutInit{
XHeaders: prm.xHeaders,
BearerToken: prm.tokenBearer,
Session: prm.tokenSession,
Local: true,
Key: prm.key,
}
w, err := prm.cli.ObjectPutInit(ctx, prmCli)
if err != nil {
return nil, fmt.Errorf("init object writing on client: %w", err)
}
if w.WriteHeader(ctx, *prm.obj) {
w.WritePayloadChunk(ctx, prm.obj.Payload())
}
cliRes, err := w.Close(ctx)
if err == nil {
err = apistatus.ErrFromStatus(cliRes.Status())
} else {
ReportError(prm.cli, err)
}
if err != nil {
return nil, fmt.Errorf("write object via client: %w", err)
}
return &PutObjectRes{
id: cliRes.StoredObjectID(),
}, nil
}
// PutObjectSingle saves the object in local storage of the remote node with PutSingle RPC.
//
// Client and key must be set.
//
// Returns any error which prevented the operation from completing correctly in error return.
func PutObjectSingle(ctx context.Context, prm PutObjectPrm) (*PutObjectRes, error) {
ctx, span := tracing.StartSpanFromContext(ctx, "client.PutObjectSingle")
defer span.End()
objID, isSet := prm.obj.ID()
if !isSet {
return nil, errors.New("missing object id")
}
prmCli := client.PrmObjectPutSingle{
XHeaders: prm.xHeaders,
BearerToken: prm.tokenBearer,
Session: prm.tokenSession,
Local: true,
Key: prm.key,
Object: prm.obj,
}
res, err := prm.cli.ObjectPutSingle(ctx, prmCli)
if err != nil {
ReportError(prm.cli, err)
return nil, fmt.Errorf("put single object on client: %w", err)
}
if err = apistatus.ErrFromStatus(res.Status()); err != nil {
return nil, fmt.Errorf("put single object via client: %w", err)
}
return &PutObjectRes{
id: objID,
}, nil
}
// SearchObjectsPrm groups parameters of SearchObjects operation.
type SearchObjectsPrm struct {
readPrmCommon
cliPrm client.PrmObjectSearch
}
// SetContainerID sets identifier of the container to search the objects.
//
// Required parameter.
func (x *SearchObjectsPrm) SetContainerID(id cid.ID) {
x.cliPrm.ContainerID = &id
}
// SetFilters sets search filters.
func (x *SearchObjectsPrm) SetFilters(fs objectSDK.SearchFilters) {
x.cliPrm.Filters = fs
}
// SearchObjectsRes groups the resulting values of SearchObjects operation.
type SearchObjectsRes struct {
ids []oid.ID
}
// IDList returns identifiers of the matched objects.
func (x SearchObjectsRes) IDList() []oid.ID {
return x.ids
}
// SearchObjects selects objects from container which match the filters.
//
// Returns any error which prevented the operation from completing correctly in error return.
func SearchObjects(ctx context.Context, prm SearchObjectsPrm) (*SearchObjectsRes, error) {
prm.cliPrm.Local = prm.local
prm.cliPrm.Session = prm.tokenSession
prm.cliPrm.BearerToken = prm.tokenBearer
prm.cliPrm.XHeaders = prm.xHeaders
prm.cliPrm.Key = prm.key
rdr, err := prm.cli.ObjectSearchInit(ctx, prm.cliPrm)
if err != nil {
return nil, fmt.Errorf("init object searching in client: %w", err)
}
buf := make([]oid.ID, 10)
var ids []oid.ID
var n int
var ok bool
for {
n, ok = rdr.Read(buf)
if n > 0 {
for i := range buf[:n] {
v := buf[i]
ids = append(ids, v)
}
}
if !ok {
break
}
}
res, err := rdr.Close()
if err == nil {
// pull out an error from status
err = apistatus.ErrFromStatus(res.Status())
}
if err != nil {
return nil, fmt.Errorf("read object list: %w", err)
}
return &SearchObjectsRes{
ids: ids,
}, nil
}