package layer import ( "bytes" "context" "crypto/ecdsa" "fmt" "io" "net/url" "strconv" "strings" "time" "github.com/nspcc-dev/neofs-api-go/pkg/acl/eacl" "github.com/nspcc-dev/neofs-api-go/pkg/client" cid "github.com/nspcc-dev/neofs-api-go/pkg/container/id" "github.com/nspcc-dev/neofs-api-go/pkg/netmap" "github.com/nspcc-dev/neofs-api-go/pkg/object" "github.com/nspcc-dev/neofs-api-go/pkg/owner" "github.com/nspcc-dev/neofs-s3-gw/api" "github.com/nspcc-dev/neofs-s3-gw/api/cache" "github.com/nspcc-dev/neofs-s3-gw/api/errors" "github.com/nspcc-dev/neofs-s3-gw/creds/accessbox" "github.com/nspcc-dev/neofs-sdk-go/pool" "go.uber.org/zap" ) type ( layer struct { pool pool.Pool log *zap.Logger listsCache ObjectsListCache objCache cache.ObjectsCache namesCache cache.ObjectsNameCache bucketCache cache.BucketCache systemCache cache.SystemCache } // CacheConfig contains params for caches. CacheConfig struct { Lifetime time.Duration Size int ListObjectsLifetime time.Duration } // Params stores basic API parameters. Params struct { Pool pool.Pool Logger *zap.Logger Timeout time.Duration Key *ecdsa.PrivateKey } // GetObjectParams stores object get request parameters. GetObjectParams struct { Range *RangeParams ObjectInfo *ObjectInfo Offset int64 Length int64 Writer io.Writer VersionID string } // HeadObjectParams stores object head request parameters. HeadObjectParams struct { Bucket string Object string VersionID string } // RangeParams stores range header request parameters. RangeParams struct { Start uint64 End uint64 } // PutObjectParams stores object put request parameters. PutObjectParams struct { Bucket string Object string Size int64 Reader io.Reader Header map[string]string } // PutVersioningParams stores object copy request parameters. PutVersioningParams struct { Bucket string Settings *BucketSettings } // BucketSettings stores settings such as versioning. BucketSettings struct { VersioningEnabled bool } // CopyObjectParams stores object copy request parameters. CopyObjectParams struct { SrcObject *ObjectInfo DstBucket string DstObject string SrcSize int64 Header map[string]string } // CreateBucketParams stores bucket create request parameters. CreateBucketParams struct { Name string ACL uint32 Policy *netmap.PlacementPolicy EACL *eacl.Table BoxData *accessbox.Box } // PutBucketACLParams stores put bucket acl request parameters. PutBucketACLParams struct { Name string EACL *eacl.Table } // DeleteBucketParams stores delete bucket request parameters. DeleteBucketParams struct { Name string } // ListObjectVersionsParams stores list objects versions parameters. ListObjectVersionsParams struct { Bucket string Delimiter string KeyMarker string MaxKeys int Prefix string VersionIDMarker string Encode string } // VersionedObject stores object name and version. VersionedObject struct { Name string VersionID string } // PutTaggingParams stores tag set params. PutTaggingParams struct { ObjectInfo *ObjectInfo TagSet map[string]string } // NeoFS provides basic NeoFS interface. NeoFS interface { Get(ctx context.Context, address *object.Address) (*object.Object, error) } // Client provides S3 API client interface. Client interface { NeoFS PutBucketVersioning(ctx context.Context, p *PutVersioningParams) (*ObjectInfo, error) GetBucketVersioning(ctx context.Context, name string) (*BucketSettings, error) ListBuckets(ctx context.Context) ([]*cache.BucketInfo, error) GetBucketInfo(ctx context.Context, name string) (*cache.BucketInfo, error) GetBucketACL(ctx context.Context, name string) (*BucketACL, error) PutBucketACL(ctx context.Context, p *PutBucketACLParams) error CreateBucket(ctx context.Context, p *CreateBucketParams) (*cid.ID, error) DeleteBucket(ctx context.Context, p *DeleteBucketParams) error GetObject(ctx context.Context, p *GetObjectParams) error GetObjectInfo(ctx context.Context, p *HeadObjectParams) (*ObjectInfo, error) GetObjectTagging(ctx context.Context, p *ObjectInfo) (map[string]string, error) PutObject(ctx context.Context, p *PutObjectParams) (*ObjectInfo, error) PutObjectTagging(ctx context.Context, p *PutTaggingParams) error CopyObject(ctx context.Context, p *CopyObjectParams) (*ObjectInfo, error) ListObjectsV1(ctx context.Context, p *ListObjectsParamsV1) (*ListObjectsInfoV1, error) ListObjectsV2(ctx context.Context, p *ListObjectsParamsV2) (*ListObjectsInfoV2, error) ListObjectVersions(ctx context.Context, p *ListObjectVersionsParams) (*ListObjectVersionsInfo, error) DeleteObjects(ctx context.Context, bucket string, objects []*VersionedObject) []error DeleteObjectTagging(ctx context.Context, p *ObjectInfo) error } ) const tagPrefix = "S3-Tag-" func (t *VersionedObject) String() string { return t.Name + ":" + t.VersionID } // NewLayer creates instance of layer. It checks credentials // and establishes gRPC connection with node. func NewLayer(log *zap.Logger, conns pool.Pool, config *CacheConfig) Client { return &layer{ pool: conns, log: log, listsCache: newListObjectsCache(config.ListObjectsLifetime), objCache: cache.New(config.Size, config.Lifetime), //todo reconsider cache params namesCache: cache.NewObjectsNameCache(1000, time.Minute), bucketCache: cache.NewBucketCache(150, time.Minute), systemCache: cache.NewSystemCache(1000, 5*time.Minute), } } // Owner returns owner id from BearerToken (context) or from client owner. func (n *layer) Owner(ctx context.Context) *owner.ID { if data, ok := ctx.Value(api.BoxData).(*accessbox.Box); ok && data != nil && data.Gate != nil { return data.Gate.BearerToken.Issuer() } return n.pool.OwnerID() } // BearerOpt returns client.WithBearer call option with token from context or with nil token. func (n *layer) BearerOpt(ctx context.Context) client.CallOption { if data, ok := ctx.Value(api.BoxData).(*accessbox.Box); ok && data != nil && data.Gate != nil { return client.WithBearer(data.Gate.BearerToken) } return client.WithBearer(nil) } // SessionOpt returns client.WithSession call option with token from context or with nil token. func (n *layer) SessionOpt(ctx context.Context) client.CallOption { if data, ok := ctx.Value(api.BoxData).(*accessbox.Box); ok && data != nil && data.Gate != nil { return client.WithSession(data.Gate.SessionToken) } return client.WithSession(nil) } // Get NeoFS Object by refs.Address (should be used by auth.Center). func (n *layer) Get(ctx context.Context, address *object.Address) (*object.Object, error) { ops := new(client.GetObjectParams).WithAddress(address) return n.pool.GetObject(ctx, ops, n.BearerOpt(ctx)) } // GetBucketInfo returns bucket info by name. func (n *layer) GetBucketInfo(ctx context.Context, name string) (*cache.BucketInfo, error) { name, err := url.QueryUnescape(name) if err != nil { return nil, err } if bktInfo := n.bucketCache.Get(name); bktInfo != nil { return bktInfo, nil } containerID := new(cid.ID) if err := containerID.Parse(name); err != nil { list, err := n.containerList(ctx) if err != nil { return nil, err } for _, bkt := range list { if bkt.Name == name { return bkt, nil } } return nil, errors.GetAPIError(errors.ErrNoSuchBucket) } return n.containerInfo(ctx, containerID) } // GetBucketACL returns bucket acl info by name. func (n *layer) GetBucketACL(ctx context.Context, name string) (*BucketACL, error) { inf, err := n.GetBucketInfo(ctx, name) if err != nil { return nil, err } eacl, err := n.GetContainerEACL(ctx, inf.CID) if err != nil { return nil, err } return &BucketACL{ Info: inf, EACL: eacl, }, nil } // PutBucketACL put bucket acl by name. func (n *layer) PutBucketACL(ctx context.Context, param *PutBucketACLParams) error { inf, err := n.GetBucketInfo(ctx, param.Name) if err != nil { return err } return n.setContainerEACLTable(ctx, inf.CID, param.EACL) } // ListBuckets returns all user containers. Name of the bucket is a container // id. Timestamp is omitted since it is not saved in neofs container. func (n *layer) ListBuckets(ctx context.Context) ([]*cache.BucketInfo, error) { return n.containerList(ctx) } // GetObject from storage. func (n *layer) GetObject(ctx context.Context, p *GetObjectParams) error { var err error params := &getParams{ Writer: p.Writer, cid: p.ObjectInfo.CID(), oid: p.ObjectInfo.ID(), offset: p.Offset, length: p.Length, } if p.Range != nil { objRange := object.NewRange() objRange.SetOffset(p.Range.Start) // Range header is inclusive objRange.SetLength(p.Range.End - p.Range.Start + 1) params.Range = objRange _, err = n.objectRange(ctx, params) } else { _, err = n.objectGet(ctx, params) } if err != nil { n.objCache.Delete(p.ObjectInfo.Address()) return fmt.Errorf("couldn't get object, cid: %s : %w", p.ObjectInfo.CID(), err) } return nil } // GetObjectInfo returns meta information about the object. func (n *layer) GetObjectInfo(ctx context.Context, p *HeadObjectParams) (*ObjectInfo, error) { bkt, err := n.GetBucketInfo(ctx, p.Bucket) if err != nil { n.log.Error("could not fetch bucket info", zap.Error(err)) return nil, err } if len(p.VersionID) == 0 { return n.headLastVersionIfNotDeleted(ctx, bkt, p.Object) } return n.headVersion(ctx, bkt, p.VersionID) } func (n *layer) getSettingsObjectInfo(ctx context.Context, bkt *cache.BucketInfo) (*ObjectInfo, error) { if meta := n.systemCache.Get(bkt.SettingsObjectKey()); meta != nil { return objInfoFromMeta(bkt, meta), nil } oid, err := n.objectFindID(ctx, &findParams{cid: bkt.CID, attr: objectSystemAttributeName, val: bkt.SettingsObjectName()}) if err != nil { return nil, err } meta, err := n.objectHead(ctx, bkt.CID, oid) if err != nil { n.log.Error("could not fetch object head", zap.Error(err)) return nil, err } if err = n.systemCache.Put(bkt.SettingsObjectKey(), meta); err != nil { n.log.Error("couldn't cache system object", zap.Error(err)) } return objInfoFromMeta(bkt, meta), nil } // PutObject into storage. func (n *layer) PutObject(ctx context.Context, p *PutObjectParams) (*ObjectInfo, error) { bkt, err := n.GetBucketInfo(ctx, p.Bucket) if err != nil { return nil, err } return n.objectPut(ctx, bkt, p) } // GetObjectTagging from storage. func (n *layer) GetObjectTagging(ctx context.Context, oi *ObjectInfo) (map[string]string, error) { bktInfo := &cache.BucketInfo{ Name: oi.Bucket, CID: oi.CID(), Owner: oi.Owner, } objInfo, err := n.getSystemObject(ctx, bktInfo, oi.TagsObject()) if err != nil && !errors.IsS3Error(err, errors.ErrNoSuchKey) { return nil, err } var tagSet map[string]string if objInfo != nil { tagSet = make(map[string]string, len(objInfo.Headers)) for k, v := range objInfo.Headers { if strings.HasPrefix(k, tagPrefix) { tagSet[strings.TrimPrefix(k, tagPrefix)] = v } } } return tagSet, nil } // PutObjectTagging into storage. func (n *layer) PutObjectTagging(ctx context.Context, p *PutTaggingParams) error { bktInfo := &cache.BucketInfo{ Name: p.ObjectInfo.Bucket, CID: p.ObjectInfo.CID(), Owner: p.ObjectInfo.Owner, } if _, err := n.putSystemObject(ctx, bktInfo, p.ObjectInfo.TagsObject(), p.TagSet, tagPrefix); err != nil { return err } return nil } // DeleteObjectTagging from storage. func (n *layer) DeleteObjectTagging(ctx context.Context, p *ObjectInfo) error { oid, err := n.objectFindID(ctx, &findParams{cid: p.CID(), attr: objectSystemAttributeName, val: p.TagsObject()}) if err != nil { if errors.IsS3Error(err, errors.ErrNoSuchKey) { return nil } return err } return n.objectDelete(ctx, p.CID(), oid) } func (n *layer) putSystemObject(ctx context.Context, bktInfo *cache.BucketInfo, objName string, metadata map[string]string, prefix string) (*object.ID, error) { oldOID, err := n.objectFindID(ctx, &findParams{cid: bktInfo.CID, attr: objectSystemAttributeName, val: objName}) if err != nil && !errors.IsS3Error(err, errors.ErrNoSuchKey) { return nil, err } attributes := make([]*object.Attribute, 0, 3) filename := object.NewAttribute() filename.SetKey(objectSystemAttributeName) filename.SetValue(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 metadata { attr := object.NewAttribute() attr.SetKey(prefix + k) attr.SetValue(v) attributes = append(attributes, attr) } raw := object.NewRaw() raw.SetOwnerID(bktInfo.Owner) raw.SetContainerID(bktInfo.CID) raw.SetAttributes(attributes...) ops := new(client.PutObjectParams).WithObject(raw.Object()) oid, err := n.pool.PutObject(ctx, ops, n.BearerOpt(ctx)) if err != nil { return nil, err } if _, err = n.objectHead(ctx, bktInfo.CID, oid); err != nil { return nil, err } if oldOID != nil { if err = n.objectDelete(ctx, bktInfo.CID, oldOID); err != nil { return nil, err } } return oid, nil } func (n *layer) getSystemObject(ctx context.Context, bkt *cache.BucketInfo, objName string) (*ObjectInfo, error) { oid, err := n.objectFindID(ctx, &findParams{cid: bkt.CID, attr: objectSystemAttributeName, val: objName}) if err != nil { return nil, err } meta, err := n.objectHead(ctx, bkt.CID, oid) if err != nil { return nil, err } return objectInfoFromMeta(bkt, meta, "", ""), nil } // CopyObject from one bucket into another bucket. func (n *layer) CopyObject(ctx context.Context, p *CopyObjectParams) (*ObjectInfo, error) { pr, pw := io.Pipe() go func() { err := n.GetObject(ctx, &GetObjectParams{ ObjectInfo: p.SrcObject, Writer: pw, }) if err = pw.CloseWithError(err); err != nil { n.log.Error("could not get object", zap.Error(err)) } }() return n.PutObject(ctx, &PutObjectParams{ Bucket: p.DstBucket, Object: p.DstObject, Size: p.SrcSize, Reader: pr, Header: p.Header, }) } // DeleteObject removes all objects with passed nice name. func (n *layer) deleteObject(ctx context.Context, bkt *cache.BucketInfo, obj *VersionedObject) error { var ( err error ids []*object.ID ) versioningEnabled := n.isVersioningEnabled(ctx, bkt) if !versioningEnabled && obj.VersionID != unversionedObjectVersionID && obj.VersionID != "" { return errors.GetAPIError(errors.ErrInvalidVersion) } if versioningEnabled { p := &PutObjectParams{ Object: obj.Name, Reader: bytes.NewReader(nil), Header: map[string]string{versionsDeleteMarkAttr: obj.VersionID}, } if len(obj.VersionID) != 0 { id, err := n.checkVersionsExist(ctx, bkt, obj) if err != nil { return err } ids = []*object.ID{id} p.Header[versionsDelAttr] = obj.VersionID } else { p.Header[versionsDeleteMarkAttr] = delMarkFullObject } if _, err = n.objectPut(ctx, bkt, p); err != nil { return err } } else { ids, err = n.objectSearch(ctx, &findParams{cid: bkt.CID, val: obj.Name}) if err != nil { return err } } for _, id := range ids { if err = n.objectDelete(ctx, bkt.CID, id); err != nil { return err } if err = n.DeleteObjectTagging(ctx, &ObjectInfo{id: id, bucketID: bkt.CID, Name: obj.Name}); err != nil { return err } } return nil } // DeleteObjects from the storage. func (n *layer) DeleteObjects(ctx context.Context, bucket string, objects []*VersionedObject) []error { var errs = make([]error, 0, len(objects)) bkt, err := n.GetBucketInfo(ctx, bucket) if err != nil { return append(errs, err) } for _, obj := range objects { if err := n.deleteObject(ctx, bkt, obj); err != nil { errs = append(errs, &errors.ObjectError{Err: err, Object: obj.Name, Version: obj.VersionID}) } } return errs } func (n *layer) CreateBucket(ctx context.Context, p *CreateBucketParams) (*cid.ID, error) { _, err := n.GetBucketInfo(ctx, p.Name) if err != nil { if errors.IsS3Error(err, errors.ErrNoSuchBucket) { return n.createContainer(ctx, p) } return nil, err } return nil, errors.GetAPIError(errors.ErrBucketAlreadyExists) } func (n *layer) DeleteBucket(ctx context.Context, p *DeleteBucketParams) error { bucketInfo, err := n.GetBucketInfo(ctx, p.Name) if err != nil { return err } objects, err := n.listSortedObjectsFromNeoFS(ctx, allObjectParams{Bucket: bucketInfo}) if err != nil { return err } if len(objects) != 0 { return errors.GetAPIError(errors.ErrBucketNotEmpty) } if err = n.deleteContainer(ctx, bucketInfo.CID); err != nil { return err } n.bucketCache.Delete(bucketInfo.Name) return nil }