internal/component => internal/dis/component

internal/dis/component/triplestore/backup.go

@@ -0,0 +1,44 @@
+package triplestore
+
+import (
+	"encoding/json"
+	"io"
+
+	"github.com/FAU-CDI/wisski-distillery/internal/dis/component"
+)
+
+func (ts *Triplestore) BackupName() string { return "triplestore" }
+
+// Backup makes a backup of all Triplestore repositories databases into the path dest.
+func (ts *Triplestore) Backup(context component.StagingContext) error {
+
+	// list all the directories
+	repos, err := ts.listRepositories()
+	if err != nil {
+		return err
+	}
+
+	// then backup each file separatly
+	return context.AddDirectory("", func() error {
+		for _, repo := range repos {
+			if err := context.AddFile(repo.ID+".nq", func(file io.Writer) error {
+				_, err := ts.SnapshotDB(file, repo.ID)
+				return err
+			}); err != nil {
+				return err
+			}
+		}
+		return nil
+	})
+}
+
+func (ts Triplestore) listRepositories() (repos []Repository, err error) {
+	res, err := ts.OpenRaw("GET", "/rest/repositories", nil, "", "application/json")
+	if err != nil {
+		return nil, err
+	}
+	defer res.Body.Close()
+
+	err = json.NewDecoder(res.Body).Decode(&repos)
+	return
+}