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[#1523] blobstor: Unify request dispatch logic

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Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
This commit is contained in:
Evgenii Stratonikov 2022-07-08 14:33:49 +03:00 • committed by fyrchik
parent 266458fe5c
commit 0c9e4e6a35
15 changed files with 161 additions and 195 deletions
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59
pkg/local_object_storage/blobstor/get_range.go
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@ -12,57 +12,18 @@ import (
// Otherwise, each sub-storage is tried in order.
func (b *BlobStor) GetRange(prm common.GetRangePrm) (common.GetRangeRes, error) {
if prm.StorageID == nil {
// Nothing specified, try everything.
res, err := b.getRangeBig(prm)
if err == nil || !errors.As(err, new(apistatus.ObjectNotFound)) {
return res, err
for i := range b.storage {
res, err := b.storage[i].Storage.GetRange(prm)
if err == nil || !errors.As(err, new(apistatus.ObjectNotFound)) {
return res, err
}
}
return b.getRangeSmall(prm)
var errNotFound apistatus.ObjectNotFound
return common.GetRangeRes{}, errNotFound
}
if len(prm.StorageID) == 0 {
return b.getRangeBig(prm)
return b.storage[1].Storage.GetRange(prm)
}
return b.getRangeSmall(prm)
}
// getRangeBig reads data of object payload range from shallow dir of BLOB storage.
//
// Returns any error encountered that
// did not allow to completely read the object payload range.
//
// Returns ErrRangeOutOfBounds if the requested object range is out of bounds.
// Returns an error of type apistatus.ObjectNotFound if object is missing.
func (b *BlobStor) getRangeBig(prm common.GetRangePrm) (common.GetRangeRes, error) {
// get compressed object data
res, err := b.fsTree.Get(common.GetPrm{Address: prm.Address})
if err != nil {
return common.GetRangeRes{}, err
}
payload := res.Object.Payload()
ln, off := prm.Range.GetLength(), prm.Range.GetOffset()
if pLen := uint64(len(payload)); ln+off < off || pLen < off || pLen < ln+off {
var errOutOfRange apistatus.ObjectOutOfRange
return common.GetRangeRes{}, errOutOfRange
}
return common.GetRangeRes{
Data: payload[off : off+ln],
}, nil
}
// getRangeSmall reads data of object payload range from blobovnicza of BLOB storage.
//
// If blobovnicza ID is not set or set to nil, BlobStor tries to get payload range
// from any blobovnicza.
//
// Returns any error encountered that
// did not allow to completely read the object payload range.
//
// Returns ErrRangeOutOfBounds if the requested object range is out of bounds.
// Returns an error of type apistatus.ObjectNotFound if the requested object is missing in blobovnicza(s).
func (b *BlobStor) getRangeSmall(prm common.GetRangePrm) (common.GetRangeRes, error) {
return b.blobovniczas.GetRange(prm)
return b.storage[0].Storage.GetRange(prm)
}