frostfs-node/pkg/local_object_storage/writecache/delete.go

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package writecache
import (
"errors"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor/fstree"
storagelog "github.com/nspcc-dev/neofs-node/pkg/local_object_storage/internal/log"
apistatus "github.com/nspcc-dev/neofs-sdk-go/client/status"
addressSDK "github.com/nspcc-dev/neofs-sdk-go/object/address"
"go.etcd.io/bbolt"
)
// Delete removes object from write-cache.
//
// Returns an error of type apistatus.ObjectNotFound if object is missing in write-cache.
func (c *cache) Delete(addr *addressSDK.Address) error {
c.modeMtx.RLock()
defer c.modeMtx.RUnlock()
if c.readOnly() {
return ErrReadOnly
}
saddr := addr.String()
// Check memory cache.
c.mtx.Lock()
for i := range c.mem {
if saddr == c.mem[i].addr {
copy(c.mem[i:], c.mem[i+1:])
c.mem = c.mem[:len(c.mem)-1]
c.curMemSize -= uint64(len(c.mem[i].data))
c.mtx.Unlock()
storagelog.Write(c.log, storagelog.AddressField(saddr), storagelog.OpField("in-mem DELETE"))
return nil
}
}
c.mtx.Unlock()
// Check disk cache.
var has int
_ = c.db.View(func(tx *bbolt.Tx) error {
b := tx.Bucket(defaultBucket)
has = len(b.Get([]byte(saddr)))
return nil
})
if 0 < has {
err := c.db.Update(func(tx *bbolt.Tx) error {
b := tx.Bucket(defaultBucket)
err := b.Delete([]byte(saddr))
return err
})
if err != nil {
return err
}
storagelog.Write(c.log, storagelog.AddressField(saddr), storagelog.OpField("db DELETE"))
c.objCounters.DecDB()
return nil
}
err := c.fsTree.Delete(addr)
if errors.Is(err, fstree.ErrFileNotFound) {
var errNotFound apistatus.ObjectNotFound
err = errNotFound
}
if err == nil {
storagelog.Write(c.log, storagelog.AddressField(saddr), storagelog.OpField("fstree DELETE"))
c.objCounters.DecFS()
}
return err
}