frostfs-node/pkg/morph/client/container/wrapper/container.go
Alex Vanin e88c1f750d [#302] Fix golint else/return linter errors
Signed-off-by: Alex Vanin <alexey@nspcc.ru>
2021-01-12 18:47:02 +03:00

147 lines
3.7 KiB
Go

package wrapper
import (
"crypto/sha256"
"github.com/nspcc-dev/neofs-api-go/pkg/container"
"github.com/nspcc-dev/neofs-api-go/pkg/owner"
v2refs "github.com/nspcc-dev/neofs-api-go/v2/refs"
core "github.com/nspcc-dev/neofs-node/pkg/core/container"
client "github.com/nspcc-dev/neofs-node/pkg/morph/client/container"
"github.com/pkg/errors"
)
var (
errNilArgument = errors.New("empty argument")
errUnsupported = errors.New("unsupported structure version")
)
// Put saves passed container structure in NeoFS system
// through Container contract call.
//
// Returns calculated container identifier and any error
// encountered that caused the saving to interrupt.
func (w *Wrapper) Put(cnr *container.Container, pubKey, signature []byte) (*container.ID, error) {
if cnr == nil || len(pubKey) == 0 || len(signature) == 0 {
return nil, errNilArgument
}
args := client.PutArgs{}
args.SetPublicKey(pubKey)
args.SetSignature(signature)
id := container.NewID()
data, err := cnr.Marshal()
if err != nil {
return nil, errors.Wrap(err, "can't marshal container")
}
id.SetSHA256(sha256.Sum256(data))
args.SetContainer(data)
return id, w.client.Put(args)
}
// Get reads the container from NeoFS system by identifier
// through Container contract call.
//
// If an empty slice is returned for the requested identifier,
// storage.ErrNotFound error is returned.
func (w *Wrapper) Get(cid *container.ID) (*container.Container, error) {
if cid == nil {
return nil, errNilArgument
}
args := client.GetArgs{}
v2 := cid.ToV2()
if v2 == nil {
return nil, errUnsupported // use other major version if there any
}
args.SetCID(v2.GetValue())
// ask RPC neo node to get serialized container
rpcAnswer, err := w.client.Get(args)
if err != nil {
return nil, err
}
// In #37 we've decided to remove length check, because smart contract would
// fail on casting `nil` value from storage to `[]byte` producing FAULT state.
// Apparently it does not fail, so we have to check length explicitly.
if len(rpcAnswer.Container()) == 0 {
return nil, core.ErrNotFound
}
// unmarshal container
cnr := container.New()
if err := cnr.Unmarshal(rpcAnswer.Container()); err != nil {
// use other major version if there any
return nil, errors.Wrap(err, "can't unmarshal container")
}
return cnr, nil
}
// Delete removes the container from NeoFS system
// through Container contract call.
//
// Returns any error encountered that caused
// the removal to interrupt.
func (w *Wrapper) Delete(cid *container.ID, signature []byte) error {
if cid == nil || len(signature) == 0 {
return errNilArgument
}
args := client.DeleteArgs{}
args.SetSignature(signature)
v2 := cid.ToV2()
if v2 == nil {
return errUnsupported // use other major version if there any
}
args.SetCID(v2.GetValue())
return w.client.Delete(args)
}
// List returns a list of container identifiers belonging
// to the specified owner of NeoFS system. The list is composed
// through Container contract call.
//
// Returns the identifiers of all NeoFS containers if pointer
// to owner identifier is nil.
func (w *Wrapper) List(ownerID *owner.ID) ([]*container.ID, error) {
args := client.ListArgs{}
if ownerID == nil {
args.SetOwnerID([]byte{})
} else if v2 := ownerID.ToV2(); v2 == nil {
return nil, errUnsupported // use other major version if there any
} else {
args.SetOwnerID(v2.GetValue())
}
// ask RPC neo node to get serialized container
rpcAnswer, err := w.client.List(args)
if err != nil {
return nil, err
}
rawIDs := rpcAnswer.CIDList()
result := make([]*container.ID, 0, len(rawIDs))
for i := range rawIDs {
v2 := new(v2refs.ContainerID)
v2.SetValue(rawIDs[i])
cid := container.NewIDFromV2(v2)
result = append(result, cid)
}
return result, nil
}