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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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40
pkg/local_object_storage/blobstor/exists.go
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@ -10,9 +10,6 @@ import (
// Returns any error encountered that did not allow
// to completely check object existence.
func (b *BlobStor) Exists(prm common.ExistsPrm) (common.ExistsRes, error) {
// check presence in shallow dir first (cheaper)
res, err := b.existsBig(prm)
// If there was an error during existence check below,
// it will be returned unless object was found in blobovnicza.
// Otherwise, it is logged and the latest error is returned.
@ -22,30 +19,25 @@ func (b *BlobStor) Exists(prm common.ExistsPrm) (common.ExistsRes, error) {
// error | found | log the error, return true, nil
// error | not found | return the error
// error | error | log the first error, return the second
if !res.Exists {
var smallErr error
res, smallErr = b.existsSmall(prm)
if err != nil && (smallErr != nil || res.Exists) {
b.log.Warn("error occured during object existence checking",
zap.Stringer("address", prm.Address),
zap.String("error", err.Error()))
err = nil
}
if err == nil {
err = smallErr
var errors []error
for i := range b.storage {
res, err := b.storage[i].Storage.Exists(prm)
if err == nil && res.Exists {
return res, nil
} else if err != nil {
errors = append(errors, err)
}
}
return res, err
}
if len(errors) == 0 {
return common.ExistsRes{}, nil
}
// checks if object is presented in shallow dir.
func (b *BlobStor) existsBig(prm common.ExistsPrm) (common.ExistsRes, error) {
return b.fsTree.Exists(prm)
}
for _, err := range errors[:len(errors)-1] {
b.log.Warn("error occured during object existence checking",
zap.Stringer("address", prm.Address),
zap.String("error", err.Error()))
}
// existsSmall checks if object is presented in blobovnicza.
func (b *BlobStor) existsSmall(prm common.ExistsPrm) (common.ExistsRes, error) {
return b.blobovniczas.Exists(prm)
return common.ExistsRes{}, errors[len(errors)-1]
}