42 lines
1 KiB
Go
42 lines
1 KiB
Go
package writecache
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
|
|
"github.com/nspcc-dev/neofs-sdk-go/object"
|
|
"go.etcd.io/bbolt"
|
|
)
|
|
|
|
// ErrNoDefaultBucket is returned by IterateDB when default bucket for objects is missing.
|
|
var ErrNoDefaultBucket = errors.New("no default bucket")
|
|
|
|
// IterateDB iterates over all objects stored in bbolt.DB instance and passes them to f until error return.
|
|
// It is assumed that db is an underlying database of some WriteCache instance.
|
|
//
|
|
// Returns ErrNoDefaultBucket if there is no default bucket in db.
|
|
//
|
|
// DB must not be nil and should be opened.
|
|
func IterateDB(db *bbolt.DB, f func(*object.Address) error) error {
|
|
return db.View(func(tx *bbolt.Tx) error {
|
|
b := tx.Bucket(defaultBucket)
|
|
if b == nil {
|
|
return ErrNoDefaultBucket
|
|
}
|
|
|
|
var addr *object.Address
|
|
|
|
return b.ForEach(func(k, v []byte) error {
|
|
if addr == nil {
|
|
addr = object.NewAddress()
|
|
}
|
|
|
|
err := addr.Parse(string(k))
|
|
if err != nil {
|
|
return fmt.Errorf("could not parse object address: %w", err)
|
|
}
|
|
|
|
return f(addr)
|
|
})
|
|
})
|
|
}
|