frostfs-node/pkg/services/object/head/service.go

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package headsvc
import (
"context"
objectSDK "github.com/nspcc-dev/neofs-api-go/pkg/object"
"github.com/nspcc-dev/neofs-node/pkg/core/container"
"github.com/nspcc-dev/neofs-node/pkg/core/netmap"
"github.com/nspcc-dev/neofs-node/pkg/core/object"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/localstore"
"github.com/nspcc-dev/neofs-node/pkg/network"
objutil "github.com/nspcc-dev/neofs-node/pkg/services/object/util"
"github.com/nspcc-dev/neofs-node/pkg/util"
"github.com/pkg/errors"
)
type RelationSearcher interface {
SearchRightChild(context.Context, *objectSDK.Address) (*objectSDK.ID, error)
}
type Service struct {
*cfg
}
type Option func(*cfg)
type cfg struct {
keyStorage *objutil.KeyStorage
localStore *localstore.Storage
cnrSrc container.Source
netMapSrc netmap.Source
workerPool util.WorkerPool
localAddrSrc network.LocalAddressSource
relSearcher RelationSearcher
}
func defaultCfg() *cfg {
return &cfg{
workerPool: new(util.SyncWorkerPool),
}
}
func NewService(opts ...Option) *Service {
c := defaultCfg()
for i := range opts {
opts[i](c)
}
return &Service{
cfg: c,
}
}
func (s *Service) Head(ctx context.Context, prm *Prm) (*Response, error) {
// try to receive header of physically stored
r, err := (&distributedHeader{
cfg: s.cfg,
}).head(ctx, prm)
if err == nil || prm.common.LocalOnly() {
return r, err
}
// try to find far right child that carries header of desired object
rightChildID, err := s.relSearcher.SearchRightChild(ctx, prm.addr)
if err != nil {
return nil, errors.Wrapf(err, "(%T) could not find right child", s)
}
addr := objectSDK.NewAddress()
addr.SetContainerID(prm.addr.GetContainerID())
addr.SetObjectID(rightChildID)
r, err = s.Head(ctx, new(Prm).WithAddress(addr))
if err != nil {
return nil, errors.Wrapf(err, "(%T) could not get right child header", s)
}
rightChild := r.Header()
// TODO: check if received parent has requested address
return &Response{
hdr: object.NewFromSDK(rightChild.GetParent()),
rightChild: rightChild,
}, nil
}
func WithKeyStorage(v *objutil.KeyStorage) Option {
return func(c *cfg) {
c.keyStorage = v
}
}
func WithLocalStorage(v *localstore.Storage) Option {
return func(c *cfg) {
c.localStore = v
}
}
func WithContainerSource(v container.Source) Option {
return func(c *cfg) {
c.cnrSrc = v
}
}
func WithNetworkMapSource(v netmap.Source) Option {
return func(c *cfg) {
c.netMapSrc = v
}
}
func WithWorkerPool(v util.WorkerPool) Option {
return func(c *cfg) {
c.workerPool = v
}
}
func WithLocalAddressSource(v network.LocalAddressSource) Option {
return func(c *cfg) {
c.localAddrSrc = v
}
}
func WithRelationSearcher(v RelationSearcher) Option {
return func(c *cfg) {
c.relSearcher = v
}
}