Continued scaffolding and interface definitions

services/data_service/internal/control/control.go

@@ -1,2 +1,25 @@
 // Package control
 package control
+
+import (
+	"github.com/google/uuid"
+	"gitlab.michelsen.id/phillmichelsen/tessera/services/data_service/internal/node"
+	"gitlab.michelsen.id/phillmichelsen/tessera/services/data_service/internal/node/processor"
+	"gitlab.michelsen.id/phillmichelsen/tessera/services/data_service/internal/router"
+)
+
+type nodeEntry struct {
+	Template            node.Template
+	TemplateFingerprint string
+}
+
+type Controller struct {
+	router            router.Router
+	sourceRegistry    any // source.Registry
+	processorRegistry processor.Registry
+	sinkRegistry      any // sink.Registry
+
+	sourceNodes    map[uuid.UUID]any
+	processorNodes map[uuid.UUID]processor.Processor
+	sinkNodes      map[uuid.UUID]any
+}