detect local cluster states

clitools/pkg/node/context.go

@@ -7,9 +7,46 @@ import (
 	"undecided.project/monok8s/pkg/system"
 )
 
+type Step func(context.Context, *NodeContext) error
+
 type NodeContext struct {
-	Config *monov1alpha1.MonoKSConfig
-	SystemRunner *system.Runner
+	Config            *monov1alpha1.MonoKSConfig
+	SystemRunner      *system.Runner
+	LocalClusterState *LocalClusterState
+	BootstrapState    *BootstrapState
 }
 
-type Step func(context.Context, *NodeContext) error
+type LocalMembershipKind string
+
+const (
+	LocalMembershipFresh                LocalMembershipKind = "fresh"
+	LocalMembershipExistingWorker       LocalMembershipKind = "existing-worker"
+	LocalMembershipExistingControlPlane LocalMembershipKind = "existing-control-plane"
+	LocalMembershipPartial              LocalMembershipKind = "partial"
+)
+
+type LocalClusterState struct {
+	HasAdminKubeconfig   bool
+	HasKubeletKubeconfig bool
+	MembershipKind       LocalMembershipKind
+}
+
+type BootstrapAction string
+
+const (
+	BootstrapActionInitControlPlane      BootstrapAction = "init-control-plane"
+	BootstrapActionJoinWorker            BootstrapAction = "join-worker"
+	BootstrapActionJoinControlPlane      BootstrapAction = "join-control-plane"
+	BootstrapActionReconcileWorker       BootstrapAction = "reconcile-worker"
+	BootstrapActionReconcileControlPlane BootstrapAction = "reconcile-control-plane"
+	BootstrapActionUpgradeWorker         BootstrapAction = "upgrade-worker"
+	BootstrapActionUpgradeControlPlane   BootstrapAction = "upgrade-control-plane"
+)
+
+type BootstrapState struct {
+	Action                 BootstrapAction
+	DetectedClusterVersion string
+
+	UnsupportedWorkerVersionSkew bool
+	VersionSkewReason            string
+}