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

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package blobstor
import (
"sync"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor/common"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor/compression"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor/fstree"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/shard/mode"
"github.com/nspcc-dev/neofs-node/pkg/util/logger"
objectSDK "github.com/nspcc-dev/neofs-sdk-go/object"
"go.uber.org/zap"
)
// SubStorage represents single storage component with some storage policy.
type SubStorage struct {
Storage common.Storage
Policy func(*objectSDK.Object, []byte) bool
}
// BlobStor represents NeoFS local BLOB storage.
type BlobStor struct {
cfg
modeMtx sync.RWMutex
mode mode.Mode
}
type Info = fstree.Info
// Option represents BlobStor's constructor option.
type Option func(*cfg)
type cfg struct {
compression compression.Config
log *logger.Logger
storage []SubStorage
}
func initConfig(c *cfg) {
c.log = zap.L()
}
// New creates, initializes and returns new BlobStor instance.
func New(opts ...Option) *BlobStor {
bs := new(BlobStor)
initConfig(&bs.cfg)
for i := range opts {
opts[i](&bs.cfg)
}
for i := range bs.storage {
bs.storage[i].Storage.SetCompressor(&bs.compression)
}
return bs
}
// SetLogger sets logger. It is used after the shard ID was generated to use it in logs.
func (b *BlobStor) SetLogger(l *zap.Logger) {
b.log = l
}
// WithStorages provides sub-blobstors.
func WithStorages(st []SubStorage) Option {
return func(c *cfg) {
c.storage = st
}
}
// WithLogger returns option to specify BlobStor's logger.
func WithLogger(l *logger.Logger) Option {
return func(c *cfg) {
c.log = l.With(zap.String("component", "BlobStor"))
}
}
// WithCompressObjects returns option to toggle
// compression of the stored objects.
//
// If true, Zstandard algorithm is used for data compression.
//
// If compressor (decompressor) creation failed,
// the uncompressed option will be used, and the error
// is recorded in the provided log.
func WithCompressObjects(comp bool) Option {
return func(c *cfg) {
c.compression.Enabled = comp
}
}
// WithUncompressableContentTypes returns option to disable decompression
// for specific content types as seen by object.AttributeContentType attribute.
func WithUncompressableContentTypes(values []string) Option {
return func(c *cfg) {
c.compression.UncompressableContentTypes = values
}
}