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

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package layer
import (
"bytes"
"context"
"crypto/ecdsa"
"fmt"
"io"
"net/url"
"sort"
"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/pkg/pool"
"go.uber.org/zap"
)
type (
layer struct {
pool pool.Pool
log *zap.Logger
listObjCache ObjectsListCache
objCache cache.ObjectsCache
}
// 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
//Bucket string
//Object string
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
}
// 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) ([]*BucketInfo, error)
GetBucketInfo(ctx context.Context, name string) (*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)
PutObject(ctx context.Context, p *PutObjectParams) (*ObjectInfo, 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
}
)
const (
unversionedObjectVersionID = "null"
bktVersionSettingsObject = ".s3-versioning-settings"
)
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,
listObjCache: newListObjectsCache(config.ListObjectsLifetime),
objCache: cache.New(config.Size, config.Lifetime),
}
}
// 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)
}
2021-05-13 19:25:32 +00:00
// 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) (*BucketInfo, error) {
name, err := url.QueryUnescape(name)
if err != nil {
return nil, err
}
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) ([]*BucketInfo, error) {
return n.containerList(ctx)
}
// GetObject from storage.
func (n *layer) GetObject(ctx context.Context, p *GetObjectParams) error {
var err error
//if bkt, err = n.GetBucketInfo(ctx, p.Bucket); err != nil {
// return fmt.Errorf("couldn't find bucket: %s : %w", p.Bucket, err)
//} else if oid, err = n.objectFindID(ctx, &findParams{cid: bkt.CID, val: p.Object}); err != nil {
// return fmt.Errorf("search of the object failed: cid: %s, val: %s : %w", bkt.CID, p.Object, err)
//}
addr := object.NewAddress()
addr.SetObjectID(p.ObjectInfo.ID())
addr.SetContainerID(p.ObjectInfo.CID())
params := &getParams{
Writer: p.Writer,
address: addr,
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(addr)
return fmt.Errorf("couldn't get object, cid: %s : %w", p.ObjectInfo.CID(), err)
}
return nil
}
//func (n *layer) checkObject(ctx context.Context, cid *cid.ID, filename string) error {
// var err error
//
// if _, err = n.objectFindID(ctx, &findParams{cid: cid, val: filename}); err == nil {
// return new(errors.ObjectAlreadyExists)
// }
//
// return err
//}
// 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 {
objInfo, err := n.headLastVersion(ctx, bkt, p.Object)
if err == nil {
if deleteMark, err2 := strconv.ParseBool(objInfo.Headers[versionsDeleteMarkAttr]); err2 == nil && deleteMark {
return nil, errors.GetAPIError(errors.ErrNoSuchKey)
}
}
return objInfo, err
}
return n.headVersion(ctx, bkt, p.VersionID)
}
func (n *layer) getSettingsObjectInfo(ctx context.Context, bkt *BucketInfo) (*ObjectInfo, error) {
oid, err := n.objectFindID(ctx, &findParams{cid: bkt.CID, val: bktVersionSettingsObject})
if err != nil {
return nil, err
}
addr := object.NewAddress()
addr.SetObjectID(oid)
addr.SetContainerID(bkt.CID)
/* todo: now we get an address via request to NeoFS and try to find the object with the address in cache
but it will be resolved after implementation of local cache with nicenames and address of objects
for get/head requests */
meta := n.objCache.Get(addr)
if meta == nil {
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.objCache.Put(addr, *meta); err != nil {
n.log.Error("couldn't cache an object", zap.Error(err))
}
}
return objectInfoFromMeta(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)
}
// 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 *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 {
if len(obj.VersionID) != 0 {
id := object.NewID()
if err := id.Parse(obj.VersionID); err != nil {
return &errors.DeleteError{Err: errors.GetAPIError(errors.ErrInvalidVersion), Object: obj.String()}
}
ids = []*object.ID{id}
lastObject, err := n.headLastVersion(ctx, bkt, obj.Name)
if err != nil {
return &errors.DeleteError{Err: err, Object: obj.String()}
}
if !strings.Contains(lastObject.Headers[versionsAddAttr], obj.VersionID) ||
strings.Contains(lastObject.Headers[versionsDelAttr], obj.VersionID) {
return &errors.DeleteError{Err: errors.GetAPIError(errors.ErrInvalidVersion), Object: obj.String()}
}
if lastObject.ID().String() == obj.VersionID {
if added := lastObject.Headers[versionsAddAttr]; len(added) > 0 {
addedVersions := strings.Split(added, ",")
sourceCopyVersion, err := n.headVersion(ctx, bkt, addedVersions[len(addedVersions)-1])
if err != nil {
return &errors.DeleteError{Err: err, Object: obj.String()}
}
p := &CopyObjectParams{
SrcObject: sourceCopyVersion,
DstBucket: bkt.Name,
DstObject: obj.Name,
SrcSize: sourceCopyVersion.Size,
Header: map[string]string{versionsDelAttr: obj.VersionID},
}
if _, err := n.CopyObject(ctx, p); err != nil {
return err
}
} else {
p := &PutObjectParams{
Object: obj.Name,
Reader: bytes.NewReader(nil),
Header: map[string]string{
versionsDelAttr: obj.VersionID,
versionsDeleteMarkAttr: strconv.FormatBool(true),
},
}
if _, err := n.objectPut(ctx, bkt, p); err != nil {
return &errors.DeleteError{Err: err, Object: obj.String()}
}
}
} else {
p := &CopyObjectParams{
SrcObject: lastObject,
DstBucket: bkt.Name,
DstObject: obj.Name,
SrcSize: lastObject.Size,
Header: map[string]string{versionsDelAttr: obj.VersionID},
}
if _, err := n.CopyObject(ctx, p); err != nil {
return err
}
}
} else {
p := &PutObjectParams{
Object: obj.Name,
Reader: bytes.NewReader(nil),
Header: map[string]string{versionsDeleteMarkAttr: strconv.FormatBool(true)},
}
if _, err := n.objectPut(ctx, bkt, p); err != nil {
return &errors.DeleteError{Err: err, Object: obj.String()}
}
}
} else {
ids, err = n.objectSearch(ctx, &findParams{cid: bkt.CID, val: obj.Name})
if err != nil {
return &errors.DeleteError{Err: err, Object: obj.String()}
}
}
for _, id := range ids {
if err = n.objectDelete(ctx, bkt.CID, id); err != nil {
return &errors.DeleteError{Err: err, Object: obj.String()}
}
}
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 i := range objects {
if err := n.deleteObject(ctx, bkt, objects[i]); err != nil {
errs = append(errs, err)
}
}
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
}
ids, err := n.objectSearch(ctx, &findParams{cid: bucketInfo.CID})
if err != nil {
return err
}
if len(ids) != 0 {
return errors.GetAPIError(errors.ErrBucketNotEmpty)
}
return n.deleteContainer(ctx, bucketInfo.CID)
}
func (n *layer) ListObjectVersions(ctx context.Context, p *ListObjectVersionsParams) (*ListObjectVersionsInfo, error) {
var (
res = ListObjectVersionsInfo{}
err error
bkt *BucketInfo
ids []*object.ID
latest = make(map[string]*ObjectVersionInfo)
)
if bkt, err = n.GetBucketInfo(ctx, p.Bucket); err != nil {
return nil, err
} else if ids, err = n.objectSearch(ctx, &findParams{cid: bkt.CID}); err != nil {
return nil, err
}
versions := make([]*ObjectVersionInfo, 0, len(ids))
deleted := make([]*DeletedObjectInfo, 0, len(ids))
deletedVersions := []string{}
for _, id := range ids {
meta, err := n.objectHead(ctx, bkt.CID, id)
if err != nil {
n.log.Warn("could not fetch object meta", zap.Error(err))
continue
}
if ov := objectVersionInfoFromMeta(bkt, meta, p.Prefix, p.Delimiter); ov != nil {
if ov.Object.Name <= p.KeyMarker {
continue
}
if currentLatest, ok := latest[ov.Object.Name]; ok {
if less(currentLatest, ov) {
latest[ov.Object.Name] = ov
}
} else {
latest[ov.Object.Name] = ov
}
if del := ov.Object.Headers[versionsDelAttr]; len(del) != 0 {
deletedVersions = append(deletedVersions, strings.Split(del, ",")...)
}
if parsed, err := strconv.ParseBool(ov.Object.Headers[versionsDeleteMarkAttr]); err == nil && parsed {
deleted = append(deleted, &DeletedObjectInfo{
Owner: ov.Object.Owner,
Key: ov.Object.Name,
VersionID: ov.VersionID,
LastModified: ov.Object.Created.Format(time.RFC3339),
})
} else {
versions = append(versions, ov)
}
}
}
sort.Slice(versions, func(i, j int) bool {
if contains(deletedVersions, versions[i].VersionID) {
return true
}
if contains(deletedVersions, versions[j].VersionID) {
return false
}
if versions[i].Object.Name == versions[j].Object.Name {
if versions[i].CreationEpoch == versions[j].CreationEpoch {
return versions[i].VersionID < versions[j].VersionID
}
return versions[i].CreationEpoch < versions[j].CreationEpoch
}
return versions[i].Object.Name < versions[j].Object.Name
})
for i, objVersion := range versions {
if i == len(versions)-1 || objVersion.Object.Name != versions[i+1].Object.Name {
objVersion.IsLatest = true
}
}
for i, objVersion := range versions {
if !contains(deletedVersions, objVersion.VersionID) {
versions = versions[i:]
break
}
}
for i, objVersion := range deleted {
if !contains(deletedVersions, objVersion.VersionID) {
deleted = deleted[i:]
break
}
}
//if len(versions) > p.MaxKeys {
// res.IsTruncated = true
//
// lastVersion := versions[p.MaxKeys-1]
// res.KeyMarker = lastVersion.Object.Name
// res.VersionIDMarker = lastVersion.VersionID
//
// nextVersion := versions[p.MaxKeys]
// res.NextKeyMarker = nextVersion.Object.Name
// res.NextVersionIDMarker = nextVersion.VersionID
//
// versions = versions[:p.MaxKeys]
//}
//
//for _, ov := range versions {
// if isDir := uniqNames[ov.Object.Name]; isDir {
// res.CommonPrefixes = append(res.CommonPrefixes, &ov.Object.Name)
// } else {
// res.Version = append(res.Version, ov)
// }
//}
res.Version = versions
res.DeleteMarker = deleted
return &res, nil
}
func less(ov1, ov2 *ObjectVersionInfo) bool {
if ov1.CreationEpoch == ov2.CreationEpoch {
return ov1.VersionID < ov2.VersionID
}
return ov1.CreationEpoch < ov2.CreationEpoch
}
func contains(list []string, elem string) bool {
for _, item := range list {
if elem == item {
return true
}
}
return false
}
func (n *layer) PutBucketVersioning(ctx context.Context, p *PutVersioningParams) (*ObjectInfo, error) {
bucketInfo, err := n.GetBucketInfo(ctx, p.Bucket)
if err != nil {
return nil, err
}
objectInfo, err := n.getSettingsObjectInfo(ctx, bucketInfo)
if err != nil {
n.log.Warn("couldn't get bucket version settings object, new one will be created",
zap.String("bucket_name", bucketInfo.Name),
zap.Stringer("cid", bucketInfo.CID),
zap.Error(err))
}
attributes := make([]*object.Attribute, 0, 3)
filename := object.NewAttribute()
filename.SetKey(object.AttributeFileName)
filename.SetValue(bktVersionSettingsObject)
createdAt := object.NewAttribute()
createdAt.SetKey(object.AttributeTimestamp)
createdAt.SetValue(strconv.FormatInt(time.Now().UTC().Unix(), 10))
versioningIgnore := object.NewAttribute()
versioningIgnore.SetKey("S3-Versions-ignore")
versioningIgnore.SetValue(strconv.FormatBool(true))
settingsVersioningEnabled := object.NewAttribute()
settingsVersioningEnabled.SetKey("S3-Settings-Versioning-enabled")
settingsVersioningEnabled.SetValue(strconv.FormatBool(p.Settings.VersioningEnabled))
attributes = append(attributes, filename, createdAt, versioningIgnore, settingsVersioningEnabled)
raw := object.NewRaw()
raw.SetOwnerID(bucketInfo.Owner)
raw.SetContainerID(bucketInfo.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
}
meta, err := n.objectHead(ctx, bucketInfo.CID, oid)
if err != nil {
return nil, err
}
if objectInfo != nil {
if err = n.objectDelete(ctx, bucketInfo.CID, objectInfo.ID()); err != nil {
return nil, err
}
}
return objectInfoFromMeta(bucketInfo, meta, "", ""), nil
}
func (n *layer) GetBucketVersioning(ctx context.Context, bucketName string) (*BucketSettings, error) {
bktInfo, err := n.GetBucketInfo(ctx, bucketName)
if err != nil {
return nil, err
}
return n.getBucketSettings(ctx, bktInfo)
}
func (n *layer) getBucketSettings(ctx context.Context, bktInfo *BucketInfo) (*BucketSettings, error) {
objInfo, err := n.getSettingsObjectInfo(ctx, bktInfo)
if err != nil {
return nil, err
}
return objectInfoToBucketSettings(objInfo), nil
}
func objectInfoToBucketSettings(info *ObjectInfo) *BucketSettings {
res := &BucketSettings{}
enabled, ok := info.Headers["S3-Settings-Versioning-enabled"]
if ok {
if parsed, err := strconv.ParseBool(enabled); err == nil {
res.VersioningEnabled = parsed
}
}
return res
}