frostfs-node/pkg/local_object_storage/blobstor/put.go

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package blobstor
import (
"fmt"
"os"
"github.com/klauspost/compress/zstd"
"github.com/nspcc-dev/neofs-node/pkg/core/object"
storagelog "github.com/nspcc-dev/neofs-node/pkg/local_object_storage/internal/log"
objectSDK "github.com/nspcc-dev/neofs-sdk-go/object"
oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
)
// PutPrm groups the parameters of Put operation.
type PutPrm struct {
rwObject
}
// PutRes groups the resulting values of Put operation.
type PutRes struct {
roBlobovniczaID
}
// Put saves the object in BLOB storage.
//
// If object is "big", BlobStor saves the object in shallow dir.
// Otherwise, BlobStor saves the object in blobonicza. In this
// case the identifier of blobovnicza is returned.
//
// Returns any error encountered that
// did not allow to completely save the object.
func (b *BlobStor) Put(prm PutPrm) (PutRes, error) {
// marshal object
data, err := prm.obj.Marshal()
if err != nil {
return PutRes{}, fmt.Errorf("could not marshal the object: %w", err)
}
return b.PutRaw(object.AddressOf(prm.obj), data, b.NeedsCompression(prm.obj))
}
// NeedsCompression returns true if the object should be compressed.
// For an object to be compressed 2 conditions must hold:
// 1. Compression is enabled in settings.
// 2. Object MIME Content-Type is allowed for compression.
func (b *BlobStor) NeedsCompression(obj *objectSDK.Object) bool {
return b.cfg.CConfig.NeedsCompression(obj)
}
// PutRaw saves an already marshaled object in BLOB storage.
func (b *BlobStor) PutRaw(addr oid.Address, data []byte, compress bool) (PutRes, error) {
big := b.isBig(data)
if big {
var err error
if compress {
err = b.fsTree.PutStream(addr, func(f *os.File) error {
enc, _ := zstd.NewWriter(f) // nil error if no options are provided
if _, err := enc.Write(data); err != nil {
return err
}
return enc.Close()
})
} else {
err = b.fsTree.Put(addr, data)
}
if err != nil {
return PutRes{}, err
}
storagelog.Write(b.log, storagelog.AddressField(addr), storagelog.OpField("fstree PUT"))
return PutRes{}, nil
}
if compress {
data = b.CConfig.Compress(data)
}
// save object in blobovnicza
res, err := b.blobovniczas.Put(addr, data)
if err != nil {
return PutRes{}, err
}
return PutRes{
roBlobovniczaID: roBlobovniczaID{
blobovniczaID: res,
},
}, nil
}
// checks if object is "big".
func (b *BlobStor) isBig(data []byte) bool {
return uint64(len(data)) > b.smallSizeLimit
}