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

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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.
type Shard struct {
*cfg
mtx *sync.RWMutex
weight WeightValues
blobStor *blobstor.BlobStor
metaBase *meta.DB
}
// Option represents Shard's constructor option.
type Option func(*cfg)
type cfg struct {
id *ID
blobOpts []blobstor.Option
metaOpts []meta.Option
log *logger.Logger
}
func defaultCfg() *cfg {
return new(cfg)
}
// New creates, initializes and returns new Shard instance.
func New(opts ...Option) *Shard {
c := defaultCfg()
for i := range opts {
opts[i](c)
}
return &Shard{
cfg: c,
mtx: new(sync.RWMutex),
blobStor: blobstor.New(c.blobOpts...),
metaBase: meta.NewDB(c.metaOpts...),
}
}
// WithID returns option to set shard identifier.
func WithID(id *ID) Option {
return func(c *cfg) {
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
}
}