Initial commit

Initial public review release v0.10.0

lib/localstore/list.go

@@ -0,0 +1,41 @@
+package localstore
+
+import (
+	"context"
+
+	"go.uber.org/zap"
+)
+
+func (l *localstore) Iterate(filter FilterPipeline, handler MetaHandler) error {
+	if handler == nil {
+		return ErrEmptyMetaHandler
+	} else if filter == nil {
+		filter = NewFilter(&FilterParams{
+			Name:       "SKIPPING_FILTER",
+			FilterFunc: SkippingFilterFunc,
+		})
+	}
+
+	return l.metaBucket.Iterate(func(_, v []byte) bool {
+		meta := new(ObjectMeta)
+		if err := meta.Unmarshal(v); err != nil {
+			l.log.Error("unmarshal meta bucket item failure", zap.Error(err))
+		} else if filter.Pass(context.TODO(), meta).Code() == CodePass {
+			return !handler(meta)
+		}
+		return true
+	})
+}
+
+// ListItems iterates over Iterator with FilterPipeline and returns all passed items.
+func ListItems(it Iterator, f FilterPipeline) ([]ListItem, error) {
+	res := make([]ListItem, 0)
+	err := it.Iterate(f, func(meta *ObjectMeta) (stop bool) {
+		res = append(res, ListItem{
+			ObjectMeta: *meta,
+		})
+		return
+	})
+
+	return res, err
+}