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[#1523] shard: Store generic storage ID in metabase

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Allow to extend blobstor with more storage sub-systems. Currently
objects stored in the FSTree have empty byte slice descriptor and object
from blobovnicza tree have the same id as earlier. Each such change in
the identifier formation should be accompanied with metabase version
increase.

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
This commit is contained in:
Evgenii Stratonikov 2022-07-06 17:09:50 +03:00 • committed by fyrchik
parent 9eb018672c
commit 73f8bb3e5f
27 changed files with 220 additions and 251 deletions
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17
pkg/local_object_storage/blobstor/iterate.go
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@ -15,7 +15,7 @@ type IterationElement struct {
addr oid.Address
blzID *blobovnicza.ID
descriptor []byte
}
// ObjectData returns the stored object in a binary representation.
@ -23,10 +23,9 @@ func (x IterationElement) ObjectData() []byte {
return x.data
}
// BlobovniczaID returns the identifier of Blobovnicza in which object is stored.
// Returns nil if the object isn't in Blobovnicza.
func (x IterationElement) BlobovniczaID() *blobovnicza.ID {
return x.blzID
// Descriptor returns the identifier of storage part where x is stored.
func (x IterationElement) Descriptor() []byte {
return x.descriptor
}
// Address returns the object address.
@ -89,7 +88,7 @@ func (b *BlobStor) Iterate(prm IteratePrm) (IterateRes, error) {
}
elem.addr = addr
elem.blzID = blobovnicza.NewIDFromBytes([]byte(p))
elem.descriptor = []byte(p)
return prm.handler(elem)
})
@ -103,7 +102,7 @@ func (b *BlobStor) Iterate(prm IteratePrm) (IterateRes, error) {
return IterateRes{}, fmt.Errorf("blobovniczas iterator failure: %w", err)
}
elem.blzID = nil
elem.descriptor = []byte{}
var fsPrm fstree.IterationPrm
fsPrm.WithIgnoreErrors(prm.ignoreErrors)
@ -136,11 +135,11 @@ func (b *BlobStor) Iterate(prm IteratePrm) (IterateRes, error) {
// IterateBinaryObjects is a helper function which iterates over BlobStor and passes binary objects to f.
// Errors related to object reading and unmarshaling are logged and skipped.
func IterateBinaryObjects(blz *BlobStor, f func(addr oid.Address, data []byte, blzID *blobovnicza.ID) error) error {
func IterateBinaryObjects(blz *BlobStor, f func(addr oid.Address, data []byte, descriptor []byte) error) error {
var prm IteratePrm
prm.SetIterationHandler(func(elem IterationElement) error {
return f(elem.Address(), elem.ObjectData(), elem.BlobovniczaID())
return f(elem.Address(), elem.ObjectData(), elem.Descriptor())
})
prm.IgnoreErrors()
prm.SetErrorHandler(func(addr oid.Address, err error) error {