[nspcc-dev#1461] engine, policer: Force remove objects w/o container

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>

pkg/local_object_storage/engine/inhume.go

@@ -15,6 +15,8 @@ import (
 type InhumePrm struct {
 	tombstone *oid.Address
 	addrs     []oid.Address
+
+	forceRemoval bool
 }
 
 // InhumeRes encapsulates results of inhume operation.
@@ -42,6 +44,15 @@ func (p *InhumePrm) MarkAsGarbage(addrs ...oid.Address) {
 	}
 }
 
+// WithForceRemoval inhumes objects specified via MarkAsGarbage with GC mark
+// without any object restrictions checks.
+func (p *InhumePrm) WithForceRemoval() {
+	if p != nil {
+		p.forceRemoval = true
+		p.tombstone = nil
+	}
+}
+
 var errInhumeFailure = errors.New("inhume operation failed")
 
 // Inhume calls metabase. Inhume method to mark an object as removed. It won't be
@@ -66,6 +77,9 @@ func (e *StorageEngine) inhume(prm InhumePrm) (InhumeRes, error) {
 	}
 
 	var shPrm shard.InhumePrm
+	if prm.forceRemoval {
+		shPrm.ForceRemoval()
+	}
 
 	for i := range prm.addrs {
 		if prm.tombstone != nil {

pkg/services/policer/check.go

@@ -31,6 +31,8 @@ func (p *Policer) processObject(ctx context.Context, addr oid.Address) {
 		if container.IsErrNotFound(err) {
 			var prm engine.InhumePrm
 			prm.MarkAsGarbage(addr)
+			prm.WithForceRemoval()
+
 			_, err := p.jobQueue.localStorage.Inhume(prm)
 			if err != nil {
 				p.log.Error("could not inhume object with missing container",