snapshots: Handle as separate components

internal/component/extras/bookkeeping.go

@@ -0,0 +1,29 @@
+package extras
+
+import (
+	"fmt"
+	"io"
+
+	"github.com/FAU-CDI/wisski-distillery/internal/component"
+	"github.com/FAU-CDI/wisski-distillery/internal/models"
+)
+
+type Bookkeeping struct {
+	component.ComponentBase
+}
+
+func (Bookkeeping) Name() string { return "bookkeeping" }
+
+// SnapshotNeedsRunning returns if this Snapshotable requires a running instance.
+func (Bookkeeping) SnapshotNeedsRunning() bool { return false }
+
+// SnapshotName returns a new name to be used as an argument for path.
+func (Bookkeeping) SnapshotName() string { return "bookkeeping.txt" }
+
+// Snapshot creates a snapshot of this instance
+func (*Bookkeeping) Snapshot(wisski models.Instance, context component.StagingContext) error {
+	return context.AddFile(".", func(file io.Writer) error {
+		_, err := fmt.Fprintf(file, "%#v\n", wisski)
+		return err
+	})
+}

internal/component/extras/config.go

@@ -11,7 +11,7 @@ type Config struct {
 	component.ComponentBase
 }
 
-func (Config) Name() string { return "extra-config" }
+func (Config) Name() string { return "config" }
 
 func (*Config) BackupName() string {
 	return "config"

internal/component/extras/filesystem.go

@@ -0,0 +1,24 @@
+package extras
+
+import (
+	"github.com/FAU-CDI/wisski-distillery/internal/component"
+	"github.com/FAU-CDI/wisski-distillery/internal/models"
+)
+
+// Filesystem implements snapshotting an instnace filesystem
+type Filesystem struct {
+	component.ComponentBase
+}
+
+func (Filesystem) Name() string { return "filesystem" }
+
+// SnapshotNeedsRunning returns if this Snapshotable requires a running instance.
+func (Filesystem) SnapshotNeedsRunning() bool { return false }
+
+// SnapshotName returns a new name to be used as an argument for path.
+func (Filesystem) SnapshotName() string { return "data" }
+
+// Snapshot creates a snapshot of this instance
+func (*Filesystem) Snapshot(wisski models.Instance, context component.StagingContext) error {
+	return context.CopyDirectory(".", wisski.FilesystemBase)
+}

internal/component/extras/pathbuilders.go

@@ -0,0 +1,39 @@
+package extras
+
+import (
+	"io"
+
+	"github.com/FAU-CDI/wisski-distillery/internal/component"
+	"github.com/FAU-CDI/wisski-distillery/internal/component/instances"
+	"github.com/FAU-CDI/wisski-distillery/internal/models"
+)
+
+type Pathbuilders struct {
+	component.ComponentBase
+	Instances *instances.Instances
+}
+
+func (Pathbuilders) Name() string { return "pathbuilders" }
+
+func (Pathbuilders) SnapshotNeedsRunning() bool { return true }
+
+func (Pathbuilders) SnapshotName() string { return "pathbuilders" }
+
+func (pbs *Pathbuilders) Snapshot(wisski models.Instance, context component.StagingContext) error {
+	return context.AddDirectory(".", func() error {
+		builders, err := pbs.Instances.Instance(wisski).AllPathbuilders()
+		if err != nil {
+			return err
+		}
+
+		for name, bytes := range builders {
+			if err := context.AddFile(name+".xml", func(file io.Writer) error {
+				_, err := file.Write([]byte(bytes))
+				return err
+			}); err != nil {
+				return err
+			}
+		}
+		return nil
+	})
+}