frostfs-node/pkg/services/policer/policer.go

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package policer
import (
"sync"
"time"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
lru "github.com/hashicorp/golang-lru/v2"
"go.uber.org/zap"
)
type objectsInWork struct {
sync.RWMutex
objs map[oid.Address]struct{}
}
func (oiw *objectsInWork) inWork(addr oid.Address) bool {
oiw.RLock()
_, ok := oiw.objs[addr]
oiw.RUnlock()
return ok
}
func (oiw *objectsInWork) remove(addr oid.Address) {
oiw.Lock()
delete(oiw.objs, addr)
oiw.Unlock()
}
func (oiw *objectsInWork) add(addr oid.Address) bool {
oiw.Lock()
_, exists := oiw.objs[addr]
oiw.objs[addr] = struct{}{}
oiw.Unlock()
return !exists
}
// Policer represents the utility that verifies
// compliance with the object storage policy.
type Policer struct {
*cfg
cache *lru.Cache[oid.Address, time.Time]
objsInWork *objectsInWork
}
// New creates, initializes and returns Policer instance.
func New(opts ...Option) *Policer {
c := defaultCfg()
for i := range opts {
opts[i](c)
}
c.log = &logger.Logger{Logger: c.log.With(zap.String("component", "Object Policer"))}
cache, err := lru.New[oid.Address, time.Time](int(c.cacheSize))
if err != nil {
panic(err)
}
return &Policer{
cfg: c,
cache: cache,
objsInWork: &objectsInWork{
objs: make(map[oid.Address]struct{}, c.maxCapacity),
},
}
}