internal/component => internal/dis/component

internal/dis/component/sql/snapshot.go

@@ -0,0 +1,35 @@
+package sql
+
+import (
+	"io"
+
+	"github.com/FAU-CDI/wisski-distillery/internal/dis/component"
+	"github.com/FAU-CDI/wisski-distillery/internal/models"
+	"github.com/tkw1536/goprogram/stream"
+)
+
+func (*SQL) SnapshotNeedsRunning() bool { return false }
+
+func (*SQL) SnapshotName() string { return "sql" }
+
+func (sql *SQL) Snapshot(wisski models.Instance, context component.StagingContext) error {
+	return context.AddDirectory(".", func() error {
+		return context.AddFile(wisski.SqlDatabase+".sql", func(file io.Writer) error {
+			return sql.SnapshotDB(context.IO(), file, wisski.SqlDatabase)
+		})
+	})
+}
+
+// SnapshotDB makes a backup of the sql database into dest.
+func (sql *SQL) SnapshotDB(io stream.IOStream, dest io.Writer, database string) error {
+	io = io.Streams(dest, nil, nil, 0).NonInteractive()
+
+	code, err := sql.Stack(sql.Environment).Exec(io, "sql", "mysqldump", "--databases", database)
+	if err != nil {
+		return err
+	}
+	if code != 0 {
+		return errSQLBackup
+	}
+	return nil
+}