frostfs-s3-gw/api/layer/system_object.go

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package layer
import (
"context"
"encoding/xml"
"strconv"
"time"
"github.com/nspcc-dev/neofs-s3-gw/api/data"
"github.com/nspcc-dev/neofs-s3-gw/api/errors"
"github.com/nspcc-dev/neofs-sdk-go/client"
"github.com/nspcc-dev/neofs-sdk-go/object"
"go.uber.org/zap"
)
func (n *layer) putSystemObject(ctx context.Context, p *PutSystemObjectParams) (*data.ObjectInfo, error) {
objInfo, err := n.putSystemObjectIntoNeoFS(ctx, p)
if err != nil {
return nil, err
}
if err = n.systemCache.PutObject(systemObjectKey(p.BktInfo, p.ObjName), objInfo); err != nil {
n.log.Error("couldn't cache system object", zap.Error(err))
}
return objInfo, nil
}
func (n *layer) headSystemObject(ctx context.Context, bkt *data.BucketInfo, objName string) (*data.ObjectInfo, error) {
if objInfo := n.systemCache.GetObject(systemObjectKey(bkt, objName)); objInfo != nil {
return objInfo, nil
}
versions, err := n.headSystemVersions(ctx, bkt, objName)
if err != nil {
return nil, err
}
if err = n.systemCache.PutObject(systemObjectKey(bkt, objName), versions.getLast()); err != nil {
n.log.Error("couldn't cache system object", zap.Error(err))
}
return versions.getLast(), nil
}
func (n *layer) deleteSystemObject(ctx context.Context, bktInfo *data.BucketInfo, name string) error {
f := &findParams{
filters: []filter{{attr: objectSystemAttributeName, val: name}},
cid: bktInfo.CID,
}
ids, err := n.objectSearch(ctx, f)
if err != nil {
return err
}
for _, id := range ids {
if err = n.objectDelete(ctx, bktInfo.CID, id); err != nil {
return err
}
}
n.systemCache.Delete(systemObjectKey(bktInfo, name))
return nil
}
func (n *layer) putSystemObjectIntoNeoFS(ctx context.Context, p *PutSystemObjectParams) (*data.ObjectInfo, error) {
versions, err := n.headSystemVersions(ctx, p.BktInfo, p.ObjName)
if err != nil && !errors.IsS3Error(err, errors.ErrNoSuchKey) {
return nil, err
}
idsToDeleteArr := updateCRDT2PSetHeaders(p.Metadata, versions, false) // false means "last write wins"
attributes := make([]*object.Attribute, 0, 3)
filename := object.NewAttribute()
filename.SetKey(objectSystemAttributeName)
filename.SetValue(p.ObjName)
createdAt := object.NewAttribute()
createdAt.SetKey(object.AttributeTimestamp)
createdAt.SetValue(strconv.FormatInt(time.Now().UTC().Unix(), 10))
versioningIgnore := object.NewAttribute()
versioningIgnore.SetKey(attrVersionsIgnore)
versioningIgnore.SetValue(strconv.FormatBool(true))
attributes = append(attributes, filename, createdAt, versioningIgnore)
for k, v := range p.Metadata {
attr := object.NewAttribute()
attr.SetKey(p.Prefix + k)
if p.Prefix == tagPrefix && v == "" {
v = tagEmptyMark
}
attr.SetValue(v)
attributes = append(attributes, attr)
}
raw := object.NewRaw()
raw.SetOwnerID(p.BktInfo.Owner)
raw.SetContainerID(p.BktInfo.CID)
raw.SetAttributes(attributes...)
ops := new(client.PutObjectParams).WithObject(raw.Object()).WithPayloadReader(p.Reader)
oid, err := n.pool.PutObject(ctx, ops, n.CallOptions(ctx)...)
if err != nil {
return nil, err
}
meta, err := n.objectHead(ctx, p.BktInfo.CID, oid)
if err != nil {
return nil, err
}
for _, id := range idsToDeleteArr {
if err = n.objectDelete(ctx, p.BktInfo.CID, id); err != nil {
n.log.Warn("couldn't delete system object",
zap.Stringer("version id", id),
zap.String("name", p.ObjName),
zap.Error(err))
}
}
return objInfoFromMeta(p.BktInfo, meta), nil
}
func (n *layer) getSystemObjectFromNeoFS(ctx context.Context, bkt *data.BucketInfo, objName string) (*object.Object, error) {
versions, err := n.headSystemVersions(ctx, bkt, objName)
if err != nil {
return nil, err
}
objInfo := versions.getLast()
obj, err := n.objectGet(ctx, bkt.CID, objInfo.ID)
if err != nil {
return nil, err
}
if len(obj.Payload()) == 0 {
return nil, errors.GetAPIError(errors.ErrInternalError)
}
return obj, nil
}
func (n *layer) getCORS(ctx context.Context, bkt *data.BucketInfo, sysName string) (*data.CORSConfiguration, error) {
if cors := n.systemCache.GetCORS(systemObjectKey(bkt, sysName)); cors != nil {
return cors, nil
}
obj, err := n.getSystemObjectFromNeoFS(ctx, bkt, sysName)
if err != nil {
return nil, err
}
cors := &data.CORSConfiguration{}
if err = xml.Unmarshal(obj.Payload(), &cors); err != nil {
return nil, err
}
if err = n.systemCache.PutCORS(systemObjectKey(bkt, sysName), cors); err != nil {
n.log.Warn("couldn't put system meta to objects cache",
zap.Stringer("object id", obj.ID()),
zap.Stringer("bucket id", bkt.CID),
zap.Error(err))
}
return cors, nil
}
func (n *layer) headSystemVersions(ctx context.Context, bkt *data.BucketInfo, sysName string) (*objectVersions, error) {
f := &findParams{
filters: []filter{{attr: objectSystemAttributeName, val: sysName}},
cid: bkt.CID,
}
ids, err := n.objectSearch(ctx, f)
if err != nil {
return nil, err
}
versions := newObjectVersions(sysName)
for _, id := range ids {
meta, err := n.objectHead(ctx, bkt.CID, id)
if err != nil {
n.log.Warn("couldn't head object",
zap.Stringer("object id", id),
zap.Stringer("bucket id", bkt.CID),
zap.Error(err))
continue
}
if oi := objInfoFromMeta(bkt, meta); oi != nil {
if !isSystem(oi) {
continue
}
versions.appendVersion(oi)
}
}
lastVersion := versions.getLast()
if lastVersion == nil {
return nil, errors.GetAPIError(errors.ErrNoSuchKey)
}
return versions, nil
}
// systemObjectKey is a key to use in SystemCache.
func systemObjectKey(bktInfo *data.BucketInfo, obj string) string {
return bktInfo.Name + obj
}