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

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package layer
import (
"context"
"crypto/ecdsa"
"crypto/rand"
"fmt"
"io"
"net/url"
"strconv"
"strings"
"time"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/data"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/errors"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/layer/encryption"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/creds/accessbox"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/eacl"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/session"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
"github.com/nats-io/nats.go"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"go.uber.org/zap"
)
type (
EventListener interface {
Subscribe(context.Context, string, MsgHandler) error
Listen(context.Context)
}
MsgHandler interface {
HandleMessage(context.Context, *nats.Msg) error
}
MsgHandlerFunc func(context.Context, *nats.Msg) error
BucketResolver interface {
Resolve(ctx context.Context, name string) (cid.ID, error)
}
layer struct {
frostFS FrostFS
log *zap.Logger
anonKey AnonymousKey
resolver BucketResolver
ncontroller EventListener
cache *Cache
treeService TreeService
}
Config struct {
ChainAddress string
Caches *CachesConfig
AnonKey AnonymousKey
Resolver BucketResolver
TreeService TreeService
}
// AnonymousKey contains data for anonymous requests.
AnonymousKey struct {
Key *keys.PrivateKey
}
// GetObjectParams stores object get request parameters.
GetObjectParams struct {
Range *RangeParams
ObjectInfo *data.ObjectInfo
BucketInfo *data.BucketInfo
Writer io.Writer
Encryption encryption.Params
}
// HeadObjectParams stores object head request parameters.
HeadObjectParams struct {
BktInfo *data.BucketInfo
Object string
VersionID string
}
// ObjectVersion stores object version info.
ObjectVersion struct {
BktInfo *data.BucketInfo
ObjectName string
VersionID string
NoErrorOnDeleteMarker bool
}
// RangeParams stores range header request parameters.
RangeParams struct {
Start uint64
End uint64
}
// PutObjectParams stores object put request parameters.
PutObjectParams struct {
BktInfo *data.BucketInfo
Object string
Size int64
Reader io.Reader
Header map[string]string
Lock *data.ObjectLock
Encryption encryption.Params
CopiesNumber uint32
}
DeleteObjectParams struct {
BktInfo *data.BucketInfo
Objects []*VersionedObject
Settings *data.BucketSettings
}
// PutSettingsParams stores object copy request parameters.
PutSettingsParams struct {
BktInfo *data.BucketInfo
Settings *data.BucketSettings
}
// PutCORSParams stores PutCORS request parameters.
PutCORSParams struct {
BktInfo *data.BucketInfo
Reader io.Reader
CopiesNumber uint32
}
// CopyObjectParams stores object copy request parameters.
CopyObjectParams struct {
SrcObject *data.ObjectInfo
ScrBktInfo *data.BucketInfo
DstBktInfo *data.BucketInfo
DstObject string
SrcSize int64
Header map[string]string
Range *RangeParams
Lock *data.ObjectLock
Encryption encryption.Params
CopiesNuber uint32
}
// CreateBucketParams stores bucket create request parameters.
CreateBucketParams struct {
Name string
Policy netmap.PlacementPolicy
EACL *eacl.Table
SessionContainerCreation *session.Container
SessionEACL *session.Container
LocationConstraint string
ObjectLockEnabled bool
}
// PutBucketACLParams stores put bucket acl request parameters.
PutBucketACLParams struct {
BktInfo *data.BucketInfo
EACL *eacl.Table
SessionToken *session.Container
}
// DeleteBucketParams stores delete bucket request parameters.
DeleteBucketParams struct {
BktInfo *data.BucketInfo
SessionToken *session.Container
}
// ListObjectVersionsParams stores list objects versions parameters.
ListObjectVersionsParams struct {
BktInfo *data.BucketInfo
Delimiter string
KeyMarker string
MaxKeys int
Prefix string
VersionIDMarker string
Encode string
}
// VersionedObject stores info about objects to delete.
VersionedObject struct {
Name string
VersionID string
DeleteMarkVersion string
DeleteMarkerEtag string
Error error
}
// Client provides S3 API client interface.
Client interface {
Initialize(ctx context.Context, c EventListener) error
EphemeralKey() *keys.PublicKey
GetBucketSettings(ctx context.Context, bktInfo *data.BucketInfo) (*data.BucketSettings, error)
PutBucketSettings(ctx context.Context, p *PutSettingsParams) error
PutBucketCORS(ctx context.Context, p *PutCORSParams) error
GetBucketCORS(ctx context.Context, bktInfo *data.BucketInfo) (*data.CORSConfiguration, error)
DeleteBucketCORS(ctx context.Context, bktInfo *data.BucketInfo) error
ListBuckets(ctx context.Context) ([]*data.BucketInfo, error)
GetBucketInfo(ctx context.Context, name string) (*data.BucketInfo, error)
GetBucketACL(ctx context.Context, bktInfo *data.BucketInfo) (*BucketACL, error)
PutBucketACL(ctx context.Context, p *PutBucketACLParams) error
CreateBucket(ctx context.Context, p *CreateBucketParams) (*data.BucketInfo, error)
DeleteBucket(ctx context.Context, p *DeleteBucketParams) error
GetObject(ctx context.Context, p *GetObjectParams) error
GetObjectInfo(ctx context.Context, p *HeadObjectParams) (*data.ObjectInfo, error)
GetExtendedObjectInfo(ctx context.Context, p *HeadObjectParams) (*data.ExtendedObjectInfo, error)
GetLockInfo(ctx context.Context, obj *ObjectVersion) (*data.LockInfo, error)
PutLockInfo(ctx context.Context, p *PutLockInfoParams) error
GetBucketTagging(ctx context.Context, bktInfo *data.BucketInfo) (map[string]string, error)
PutBucketTagging(ctx context.Context, bktInfo *data.BucketInfo, tagSet map[string]string) error
DeleteBucketTagging(ctx context.Context, bktInfo *data.BucketInfo) error
GetObjectTagging(ctx context.Context, p *GetObjectTaggingParams) (string, map[string]string, error)
PutObjectTagging(ctx context.Context, p *PutObjectTaggingParams) (*data.NodeVersion, error)
DeleteObjectTagging(ctx context.Context, p *ObjectVersion) (*data.NodeVersion, error)
PutObject(ctx context.Context, p *PutObjectParams) (*data.ExtendedObjectInfo, error)
CopyObject(ctx context.Context, p *CopyObjectParams) (*data.ExtendedObjectInfo, 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, p *DeleteObjectParams) []*VersionedObject
CreateMultipartUpload(ctx context.Context, p *CreateMultipartParams) error
CompleteMultipartUpload(ctx context.Context, p *CompleteMultipartParams) (*UploadData, *data.ExtendedObjectInfo, error)
UploadPart(ctx context.Context, p *UploadPartParams) (string, error)
UploadPartCopy(ctx context.Context, p *UploadCopyParams) (*data.ObjectInfo, error)
ListMultipartUploads(ctx context.Context, p *ListMultipartUploadsParams) (*ListMultipartUploadsInfo, error)
AbortMultipartUpload(ctx context.Context, p *UploadInfoParams) error
ListParts(ctx context.Context, p *ListPartsParams) (*ListPartsInfo, error)
PutBucketNotificationConfiguration(ctx context.Context, p *PutBucketNotificationConfigurationParams) error
GetBucketNotificationConfiguration(ctx context.Context, bktInfo *data.BucketInfo) (*data.NotificationConfiguration, error)
// Compound methods for optimizations
// GetObjectTaggingAndLock unifies GetObjectTagging and GetLock methods in single tree service invocation.
GetObjectTaggingAndLock(ctx context.Context, p *ObjectVersion, nodeVersion *data.NodeVersion) (map[string]string, *data.LockInfo, error)
}
)
const (
tagPrefix = "S3-Tag-"
AESEncryptionAlgorithm = "AES256"
AESKeySize = 32
AttributeEncryptionAlgorithm = api.FrostFSSystemMetadataPrefix + "Algorithm"
AttributeDecryptedSize = api.FrostFSSystemMetadataPrefix + "Decrypted-Size"
AttributeHMACSalt = api.FrostFSSystemMetadataPrefix + "HMAC-Salt"
AttributeHMACKey = api.FrostFSSystemMetadataPrefix + "HMAC-Key"
AttributeFrostfsCopiesNumber = "frostfs-copies-number" // such format to match X-Amz-Meta-Frostfs-Copies-Number header
)
func (t *VersionedObject) String() string {
return t.Name + ":" + t.VersionID
}
func (f MsgHandlerFunc) HandleMessage(ctx context.Context, msg *nats.Msg) error {
return f(ctx, msg)
}
// NewLayer creates an instance of a layer. It checks credentials
// and establishes gRPC connection with the node.
func NewLayer(log *zap.Logger, frostFS FrostFS, config *Config) Client {
return &layer{
frostFS: frostFS,
log: log,
anonKey: config.AnonKey,
resolver: config.Resolver,
cache: NewCache(config.Caches),
treeService: config.TreeService,
}
}
func (n *layer) EphemeralKey() *keys.PublicKey {
return n.anonKey.Key.PublicKey()
}
func (n *layer) Initialize(ctx context.Context, c EventListener) error {
if n.IsNotificationEnabled() {
return fmt.Errorf("already initialized")
}
// todo add notification handlers (e.g. for lifecycles)
c.Listen(ctx)
n.ncontroller = c
return nil
}
func (n *layer) IsNotificationEnabled() bool {
return n.ncontroller != nil
}
// IsAuthenticatedRequest checks if access box exists in the current request.
func IsAuthenticatedRequest(ctx context.Context) bool {
_, ok := ctx.Value(api.BoxData).(*accessbox.Box)
return ok
}
// TimeNow returns client time from request or time.Now().
func TimeNow(ctx context.Context) time.Time {
if now, ok := ctx.Value(api.ClientTime).(time.Time); ok {
return now
}
return time.Now()
}
// Owner returns owner id from BearerToken (context) or from client owner.
func (n *layer) Owner(ctx context.Context) user.ID {
if bd, ok := ctx.Value(api.BoxData).(*accessbox.Box); ok && bd != nil && bd.Gate != nil && bd.Gate.BearerToken != nil {
return bearer.ResolveIssuer(*bd.Gate.BearerToken)
}
var ownerID user.ID
user.IDFromKey(&ownerID, (ecdsa.PublicKey)(*n.EphemeralKey()))
return ownerID
}
func (n *layer) prepareAuthParameters(ctx context.Context, prm *PrmAuth, bktOwner user.ID) {
if bd, ok := ctx.Value(api.BoxData).(*accessbox.Box); ok && bd != nil && bd.Gate != nil && bd.Gate.BearerToken != nil {
if bktOwner.Equals(bearer.ResolveIssuer(*bd.Gate.BearerToken)) {
prm.BearerToken = bd.Gate.BearerToken
return
}
}
prm.PrivateKey = &n.anonKey.Key.PrivateKey
}
// GetBucketInfo returns bucket info by name.
func (n *layer) GetBucketInfo(ctx context.Context, name string) (*data.BucketInfo, error) {
name, err := url.QueryUnescape(name)
if err != nil {
return nil, fmt.Errorf("unescape bucket name: %w", err)
}
if bktInfo := n.cache.GetBucket(name); bktInfo != nil {
return bktInfo, nil
}
containerID, err := n.ResolveBucket(ctx, name)
if err != nil {
n.log.Debug("bucket not found", zap.Error(err))
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, bktInfo *data.BucketInfo) (*BucketACL, error) {
eACL, err := n.GetContainerEACL(ctx, bktInfo.CID)
if err != nil {
return nil, fmt.Errorf("get container eacl: %w", err)
}
return &BucketACL{
Info: bktInfo,
EACL: eACL,
}, nil
}
// PutBucketACL puts bucket acl by name.
func (n *layer) PutBucketACL(ctx context.Context, param *PutBucketACLParams) error {
return n.setContainerEACLTable(ctx, param.BktInfo.CID, param.EACL, param.SessionToken)
}
// ListBuckets returns all user containers. The name of the bucket is a container
// id. Timestamp is omitted since it is not saved in frostfs container.
func (n *layer) ListBuckets(ctx context.Context) ([]*data.BucketInfo, error) {
return n.containerList(ctx)
}
// GetObject from storage.
func (n *layer) GetObject(ctx context.Context, p *GetObjectParams) error {
var params getParams
params.oid = p.ObjectInfo.ID
params.bktInfo = p.BucketInfo
var decReader *encryption.Decrypter
if p.Encryption.Enabled() {
var err error
decReader, err = getDecrypter(p)
if err != nil {
return fmt.Errorf("creating decrypter: %w", err)
}
params.off = decReader.EncryptedOffset()
params.ln = decReader.EncryptedLength()
} else {
if p.Range != nil {
if p.Range.Start > p.Range.End {
panic("invalid range")
}
params.ln = p.Range.End - p.Range.Start + 1
params.off = p.Range.Start
}
}
payload, err := n.initObjectPayloadReader(ctx, params)
if err != nil {
return fmt.Errorf("init object payload reader: %w", err)
}
bufSize := uint64(32 * 1024) // configure?
if params.ln != 0 && params.ln < bufSize {
bufSize = params.ln
}
// alloc buffer for copying
buf := make([]byte, bufSize) // sync-pool it?
r := payload
if decReader != nil {
if err = decReader.SetReader(payload); err != nil {
return fmt.Errorf("set reader to decrypter: %w", err)
}
r = io.LimitReader(decReader, int64(decReader.DecryptedLength()))
}
// copy full payload
written, err := io.CopyBuffer(p.Writer, r, buf)
if err != nil {
if decReader != nil {
return fmt.Errorf("copy object payload written: '%d', decLength: '%d', params.ln: '%d' : %w", written, decReader.DecryptedLength(), params.ln, err)
}
return fmt.Errorf("copy object payload written: '%d': %w", written, err)
}
return nil
}
func getDecrypter(p *GetObjectParams) (*encryption.Decrypter, error) {
var encRange *encryption.Range
if p.Range != nil {
encRange = &encryption.Range{Start: p.Range.Start, End: p.Range.End}
}
header := p.ObjectInfo.Headers[UploadCompletedParts]
if len(header) == 0 {
return encryption.NewDecrypter(p.Encryption, uint64(p.ObjectInfo.Size), encRange)
}
decryptedObjectSize, err := strconv.ParseUint(p.ObjectInfo.Headers[AttributeDecryptedSize], 10, 64)
if err != nil {
return nil, fmt.Errorf("parse decrypted size: %w", err)
}
splits := strings.Split(header, ",")
sizes := make([]uint64, len(splits))
for i, splitInfo := range splits {
part, err := ParseCompletedPartHeader(splitInfo)
if err != nil {
return nil, fmt.Errorf("parse completed part: %w", err)
}
sizes[i] = uint64(part.Size)
}
return encryption.NewMultipartDecrypter(p.Encryption, decryptedObjectSize, sizes, encRange)
}
// GetObjectInfo returns meta information about the object.
func (n *layer) GetObjectInfo(ctx context.Context, p *HeadObjectParams) (*data.ObjectInfo, error) {
extendedObjectInfo, err := n.GetExtendedObjectInfo(ctx, p)
if err != nil {
return nil, err
}
return extendedObjectInfo.ObjectInfo, nil
}
// GetExtendedObjectInfo returns meta information and corresponding info from the tree service about the object.
func (n *layer) GetExtendedObjectInfo(ctx context.Context, p *HeadObjectParams) (*data.ExtendedObjectInfo, error) {
var objInfo *data.ExtendedObjectInfo
var err error
if len(p.VersionID) == 0 {
objInfo, err = n.headLastVersionIfNotDeleted(ctx, p.BktInfo, p.Object)
} else {
objInfo, err = n.headVersion(ctx, p.BktInfo, p)
}
if err != nil {
return nil, err
}
reqInfo := api.GetReqInfo(ctx)
n.log.Debug("get object",
zap.String("reqId", reqInfo.RequestID),
zap.String("bucket", p.BktInfo.Name),
zap.Stringer("cid", p.BktInfo.CID),
zap.String("object", objInfo.ObjectInfo.Name),
zap.Stringer("oid", objInfo.ObjectInfo.ID))
return objInfo, nil
}
// CopyObject from one bucket into another bucket.
func (n *layer) CopyObject(ctx context.Context, p *CopyObjectParams) (*data.ExtendedObjectInfo, error) {
pr, pw := io.Pipe()
go func() {
err := n.GetObject(ctx, &GetObjectParams{
ObjectInfo: p.SrcObject,
Writer: pw,
Range: p.Range,
BucketInfo: p.ScrBktInfo,
Encryption: p.Encryption,
})
if err = pw.CloseWithError(err); err != nil {
n.log.Error("could not get object", zap.Error(err))
}
}()
return n.PutObject(ctx, &PutObjectParams{
BktInfo: p.DstBktInfo,
Object: p.DstObject,
Size: p.SrcSize,
Reader: pr,
Header: p.Header,
Encryption: p.Encryption,
CopiesNumber: p.CopiesNuber,
})
}
func getRandomOID() (oid.ID, error) {
b := [32]byte{}
if _, err := rand.Read(b[:]); err != nil {
return oid.ID{}, err
}
var objID oid.ID
objID.SetSHA256(b)
return objID, nil
}
func (n *layer) deleteObject(ctx context.Context, bkt *data.BucketInfo, settings *data.BucketSettings, obj *VersionedObject) *VersionedObject {
if len(obj.VersionID) != 0 || settings.Unversioned() {
var nodeVersion *data.NodeVersion
if nodeVersion, obj.Error = n.getNodeVersionToDelete(ctx, bkt, obj); obj.Error != nil {
return n.handleNotFoundError(bkt, obj)
}
if obj.DeleteMarkVersion, obj.Error = n.removeOldVersion(ctx, bkt, nodeVersion, obj); obj.Error != nil {
return obj
}
obj.Error = n.treeService.RemoveVersion(ctx, bkt, nodeVersion.ID)
n.cache.CleanListCacheEntriesContainingObject(obj.Name, bkt.CID)
return obj
}
lastVersion, err := n.getLastNodeVersion(ctx, bkt, obj)
if err != nil {
obj.Error = err
return n.handleNotFoundError(bkt, obj)
}
if settings.VersioningSuspended() {
obj.VersionID = data.UnversionedObjectVersionID
var nullVersionToDelete *data.NodeVersion
if lastVersion.IsUnversioned {
if !lastVersion.IsDeleteMarker() {
nullVersionToDelete = lastVersion
}
} else if nullVersionToDelete, obj.Error = n.getNodeVersionToDelete(ctx, bkt, obj); obj.Error != nil {
if !isNotFoundError(obj.Error) {
return obj
}
}
if nullVersionToDelete != nil {
if obj.DeleteMarkVersion, obj.Error = n.removeOldVersion(ctx, bkt, nullVersionToDelete, obj); obj.Error != nil {
return obj
}
}
}
if lastVersion.IsDeleteMarker() {
obj.DeleteMarkVersion = lastVersion.OID.EncodeToString()
return obj
}
randOID, err := getRandomOID()
if err != nil {
obj.Error = fmt.Errorf("couldn't get random oid: %w", err)
return obj
}
obj.DeleteMarkVersion = randOID.EncodeToString()
newVersion := &data.NodeVersion{
BaseNodeVersion: data.BaseNodeVersion{
OID: randOID,
FilePath: obj.Name,
},
DeleteMarker: &data.DeleteMarkerInfo{
Created: TimeNow(ctx),
Owner: n.Owner(ctx),
},
IsUnversioned: settings.VersioningSuspended(),
}
if _, obj.Error = n.treeService.AddVersion(ctx, bkt, newVersion); obj.Error != nil {
return obj
}
n.cache.DeleteObjectName(bkt.CID, bkt.Name, obj.Name)
return obj
}
func (n *layer) handleNotFoundError(bkt *data.BucketInfo, obj *VersionedObject) *VersionedObject {
if isNotFoundError(obj.Error) {
obj.Error = nil
n.cache.CleanListCacheEntriesContainingObject(obj.Name, bkt.CID)
n.cache.DeleteObjectName(bkt.CID, bkt.Name, obj.Name)
}
return obj
}
func isNotFoundError(err error) bool {
return errors.IsS3Error(err, errors.ErrNoSuchKey) ||
errors.IsS3Error(err, errors.ErrNoSuchVersion)
}
func (n *layer) getNodeVersionToDelete(ctx context.Context, bkt *data.BucketInfo, obj *VersionedObject) (*data.NodeVersion, error) {
objVersion := &ObjectVersion{
BktInfo: bkt,
ObjectName: obj.Name,
VersionID: obj.VersionID,
NoErrorOnDeleteMarker: true,
}
return n.getNodeVersion(ctx, objVersion)
}
func (n *layer) getLastNodeVersion(ctx context.Context, bkt *data.BucketInfo, obj *VersionedObject) (*data.NodeVersion, error) {
objVersion := &ObjectVersion{
BktInfo: bkt,
ObjectName: obj.Name,
VersionID: "",
NoErrorOnDeleteMarker: true,
}
return n.getNodeVersion(ctx, objVersion)
}
func (n *layer) removeOldVersion(ctx context.Context, bkt *data.BucketInfo, nodeVersion *data.NodeVersion, obj *VersionedObject) (string, error) {
if nodeVersion.IsDeleteMarker() {
return obj.VersionID, nil
}
return "", n.objectDelete(ctx, bkt, nodeVersion.OID)
}
// DeleteObjects from the storage.
func (n *layer) DeleteObjects(ctx context.Context, p *DeleteObjectParams) []*VersionedObject {
for i, obj := range p.Objects {
p.Objects[i] = n.deleteObject(ctx, p.BktInfo, p.Settings, obj)
}
return p.Objects
}
func (n *layer) CreateBucket(ctx context.Context, p *CreateBucketParams) (*data.BucketInfo, error) {
bktInfo, err := n.GetBucketInfo(ctx, p.Name)
if err != nil {
if errors.IsS3Error(err, errors.ErrNoSuchBucket) {
return n.createContainer(ctx, p)
}
return nil, err
}
if p.SessionContainerCreation != nil && session.IssuedBy(*p.SessionContainerCreation, bktInfo.Owner) {
return nil, errors.GetAPIError(errors.ErrBucketAlreadyOwnedByYou)
}
return nil, errors.GetAPIError(errors.ErrBucketAlreadyExists)
}
func (n *layer) ResolveBucket(ctx context.Context, name string) (cid.ID, error) {
var cnrID cid.ID
if err := cnrID.DecodeString(name); err != nil {
if cnrID, err = n.resolver.Resolve(ctx, name); err != nil {
return cid.ID{}, err
}
reqInfo := api.GetReqInfo(ctx)
n.log.Info("resolve bucket", zap.String("reqId", reqInfo.RequestID), zap.String("bucket", name), zap.Stringer("cid", cnrID))
}
return cnrID, nil
}
func (n *layer) DeleteBucket(ctx context.Context, p *DeleteBucketParams) error {
nodeVersions, err := n.bucketNodeVersions(ctx, p.BktInfo, "")
if err != nil {
return err
}
if len(nodeVersions) != 0 {
return errors.GetAPIError(errors.ErrBucketNotEmpty)
}
n.cache.DeleteBucket(p.BktInfo.Name)
return n.frostFS.DeleteContainer(ctx, p.BktInfo.CID, p.SessionToken)
}