[#176] localstore: Implement shard methods via Metabase and BlobStor

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
This commit is contained in:
Leonard Lyubich 2020-11-17 20:39:43 +03:00 committed by Alex Vanin
parent b127607ac6
commit 46e455dcae
6 changed files with 154 additions and 8 deletions

View file

@ -0,0 +1,21 @@
package meta
import (
"github.com/nspcc-dev/neofs-api-go/pkg/object"
"github.com/pkg/errors"
)
// Exists checks if object is presented in metabase.
func (db *DB) Exists(addr *object.Address) (bool, error) {
// FIXME: temp solution, avoid direct Get usage
_, err := db.Get(addr)
if err != nil {
if errors.Is(err, errNotFound) {
return false, nil
}
return false, err
}
return true, nil
}

View file

@ -2,6 +2,9 @@ package shard
import (
objectSDK "github.com/nspcc-dev/neofs-api-go/pkg/object"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor"
"github.com/pkg/errors"
"go.uber.org/zap"
)
// DeletePrm groups the parameters of Delete operation.
@ -31,7 +34,19 @@ func (s *Shard) Delete(prm *DeletePrm) (*DeleteRes, error) {
s.mtx.Lock()
defer s.mtx.Unlock()
// FIXME: implement me
// mark object to delete in metabase
if err := s.metaBase.Delete(prm.addr); err != nil {
s.log.Warn("could not mark object to delete in metabase",
zap.String("error", err.Error()),
)
}
if _, err := s.blobStor.Delete(
new(blobstor.DeletePrm).
WithAddress(prm.addr),
); err != nil {
return nil, errors.Wrap(err, "could not remove object from BLOB storage")
}
return nil, nil
}

View file

@ -5,6 +5,7 @@ import (
objectSDK "github.com/nspcc-dev/neofs-api-go/pkg/object"
"github.com/nspcc-dev/neofs-node/pkg/core/object"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor"
)
// GetPrm groups the parameters of Get operation.
@ -73,7 +74,47 @@ func (s *Shard) Get(prm *GetPrm) (*GetRes, error) {
s.mtx.RLock()
defer s.mtx.RUnlock()
// FIXME: implement me
if prm.ln < 0 {
// try to read from WriteCache
// TODO: implement
return nil, nil
res, err := s.blobStor.Get(
new(blobstor.GetPrm).
WithAddress(prm.addr),
)
if err != nil {
if errors.Is(err, blobstor.ErrObjectNotFound) {
err = ErrObjectNotFound
}
return nil, err
}
return &GetRes{
obj: res.Object(),
}, nil
}
// try to read from WriteCache
// TODO: implement
res, err := s.blobStor.GetRange(
new(blobstor.GetRangePrm).
WithAddress(prm.addr).
WithPayloadRange(prm.off, uint64(prm.ln)),
)
if err != nil {
if errors.Is(err, blobstor.ErrObjectNotFound) {
err = ErrObjectNotFound
}
return nil, err
}
obj := object.NewRaw()
obj.SetPayload(res.RangeData())
return &GetRes{
obj: obj.Object(),
}, nil
}

View file

@ -2,6 +2,8 @@ package shard
import (
"github.com/nspcc-dev/neofs-node/pkg/core/object"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor"
"github.com/pkg/errors"
)
// PutPrm groups the parameters of Put operation.
@ -29,7 +31,31 @@ func (s *Shard) Put(prm *PutPrm) (*PutRes, error) {
s.mtx.Lock()
defer s.mtx.Unlock()
// FIXME: implement me
// check object existence
ex, err := s.metaBase.Exists(prm.obj.Address())
if err != nil {
return nil, errors.Wrap(err, "could not check object existence")
} else if ex {
return nil, nil
}
// try to put to WriteCache
// TODO: implement
// put to BlobStor
if _, err := s.blobStor.Put(
new(blobstor.PutPrm).
WithObject(prm.obj),
); err != nil {
return nil, errors.Wrap(err, "could not put object to BLOB storage")
}
// put to metabase
if err := s.metaBase.Put(prm.obj); err != nil {
// may we need to handle this case in a special way
// since the object has been successfully written to BlobStor
return nil, errors.Wrap(err, "could not put object to metabase")
}
return nil, nil
}

View file

@ -2,6 +2,7 @@ package shard
import (
objectSDK "github.com/nspcc-dev/neofs-api-go/pkg/object"
"github.com/pkg/errors"
)
// SelectPrm groups the parameters of Select operation.
@ -36,7 +37,12 @@ func (s *Shard) Select(prm *SelectPrm) (*SelectRes, error) {
s.mtx.RLock()
defer s.mtx.RUnlock()
// FIXME: implement me
addrList, err := s.metaBase.Select(prm.filters)
if err != nil {
return nil, errors.Wrap(err, "could not select objects from metabase")
}
return nil, nil
return &SelectRes{
addrList: addrList,
}, nil
}

View file

@ -2,6 +2,10 @@ package shard
import (
"sync"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor"
meta "github.com/nspcc-dev/neofs-node/pkg/local_object_storage/metabase"
"github.com/nspcc-dev/neofs-node/pkg/util/logger"
)
// Shard represents single shard of NeoFS Local Storage Engine.
@ -11,6 +15,10 @@ type Shard struct {
mtx *sync.RWMutex
weight WeightValues
blobStor *blobstor.BlobStor
metaBase *meta.DB
}
// Option represents Shard's constructor option.
@ -18,6 +26,12 @@ type Option func(*cfg)
type cfg struct {
id *ID
blobOpts []blobstor.Option
metaOpts []meta.Option
log *logger.Logger
}
func defaultCfg() *cfg {
@ -35,6 +49,8 @@ func New(opts ...Option) *Shard {
return &Shard{
cfg: c,
mtx: new(sync.RWMutex),
blobStor: blobstor.New(c.blobOpts...),
metaBase: meta.NewDB(c.metaOpts...),
}
}
@ -44,3 +60,24 @@ func WithID(id *ID) Option {
c.id = id
}
}
// WithBlobStorOptions returns option to set internal BlobStor options.
func WithBlobStorOptions(opts []blobstor.Option) Option {
return func(c *cfg) {
c.blobOpts = opts
}
}
// WithMetaBaseOptions returns option to set internal metabase options.
func WithMetaBaseOptions(opts []meta.Option) Option {
return func(c *cfg) {
c.metaOpts = opts
}
}
// WithLogger returns option to set Shard's logger.
func WithLogger(l *logger.Logger) Option {
return func(c *cfg) {
c.log = l
}
}