Rework pruning to report reclaimed space

This change adds code to report the reclaimed space after a prune.
Reclaimed space from volumes, images, and containers is recorded
during the prune call in a PruneReport struct. These structs are
collected into a slice during a system prune and processed afterwards
to calculate the total reclaimed space.

Closes #8658

Signed-off-by: Baron Lenardson <lenardson.baron@gmail.com>

1 files changed, 40 insertions, 0 deletions

diff --git a/pkg/domain/entities/reports/prune.go b/pkg/domain/entities/reports/prune.go
new file mode 100644
index 000000000..5494ac3ae
--- /dev/null
+++ b/pkg/domain/entities/reports/prune.go
@@ -0,0 +1,40 @@
+package reports
+
+type PruneReport struct {
+	Id   string //nolint
+	Err  error
+	Size uint64
+}
+
+func PruneReportsIds(r []*PruneReport) []string {
+	ids := make([]string, 0, len(r))
+	for _, v := range r {
+		if v == nil || v.Id == "" {
+			continue
+		}
+		ids = append(ids, v.Id)
+	}
+	return ids
+}
+
+func PruneReportsErrs(r []*PruneReport) []error {
+	errs := make([]error, 0, len(r))
+	for _, v := range r {
+		if v == nil || v.Err == nil {
+			continue
+		}
+		errs = append(errs, v.Err)
+	}
+	return errs
+}
+
+func PruneReportsSize(r []*PruneReport) uint64 {
+	size := uint64(0)
+	for _, v := range r {
+		if v == nil {
+			continue
+		}
+		size = size + v.Size
+	}
+	return size
+}