47 lines
648 B
Go
47 lines
648 B
Go
|
package shard
|
||
|
|
|
||
|
|
import (
|
||
|
|
"sync"
|
||
|
|
)
|
||
|
|
|
||
|
|
// Shard represents single shard of NeoFS Local Storage Engine.
|
||
|
|
type Shard struct {
|
||
|
|
*cfg
|
||
|
|
|
||
|
|
mtx *sync.RWMutex
|
||
|
|
|
||
|
|
weight WeightValues
|
||
|
|
}
|
||
|
|
|
||
|
|
// Option represents Shard's constructor option.
|
||
|
|
type Option func(*cfg)
|
||
|
|
|
||
|
|
type cfg struct {
|
||
|
|
id *ID
|
||
|
|
}
|
||
|
|
|
||
|
|
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),
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// WithID returns option to set shard identifier.
|
||
|
|
func WithID(id *ID) Option {
|
||
|
|
return func(c *cfg) {
|
||
|
|
c.id = id
|
||
|
|
}
|
||
|
|
}
|