[#241] object/search: Refactor service processing

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

pkg/services/object/search/local.go

@@ -1,41 +1,22 @@
 package searchsvc
 
 import (
-	"context"
-
-	"github.com/nspcc-dev/neofs-api-go/pkg/container"
-	objectSDK "github.com/nspcc-dev/neofs-api-go/pkg/object"
-	"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/engine"
-	"github.com/nspcc-dev/neofs-node/pkg/services/object/search/query"
-	"github.com/pkg/errors"
+	"go.uber.org/zap"
 )
 
-type localStream struct {
-	query query.Query
+func (exec *execCtx) executeLocal() {
+	ids, err := exec.svc.localStorage.search(exec)
 
-	storage *engine.StorageEngine
-
-	cid *container.ID
-}
-
-func (s *localStream) stream(ctx context.Context, ch chan<- []*objectSDK.ID) error {
-	fs := s.query.ToSearchFilters()
-
-	addrList, err := engine.Select(s.storage, s.cid, fs)
 	if err != nil {
-		return errors.Wrapf(err, "(%T) could not select objects from local storage", s)
+		exec.status = statusUndefined
+		exec.err = err
+
+		exec.log.Debug("local operation failed",
+			zap.String("error", err.Error()),
+		)
+
+		return
 	}
 
-	idList := make([]*objectSDK.ID, 0, len(addrList))
-
-	for i := range addrList {
-		idList = append(idList, addrList[i].ObjectID())
-	}
-
-	select {
-	case <-ctx.Done():
-		return ctx.Err()
-	case ch <- idList:
-		return nil
-	}
+	exec.writeIDList(ids)
 }