✨ add exp folder to prepare for aks/machinepool

Author: alexeldeib

.dockerignore

@@ -5,6 +5,7 @@
 !/api/**
 !/cloud/**
 !/controllers/**
+!/exp/**
 !/pkg/**
 !/main.go
 !/go.mod

Makefile

@@ -50,6 +50,7 @@ KUBECTL=$(TOOLS_BIN_DIR)/kubectl
 KUSTOMIZE := $(abspath $(TOOLS_BIN_DIR)/kustomize)
 MOCKGEN := $(TOOLS_BIN_DIR)/mockgen
 RELEASE_NOTES := $(TOOLS_DIR)/$(RELEASE_NOTES_BIN)
+EXP_DIR := exp
 
 # Define Docker related variables. Releases should modify and double check these vars.
 REGISTRY ?= gcr.io/$(shell gcloud config get-value project)
@@ -174,6 +175,7 @@ generate: ## Generate code
 generate-go: $(CONTROLLER_GEN) $(MOCKGEN) $(CONVERSION_GEN) ## Runs Go related generate targets
 	$(CONTROLLER_GEN) \
 		paths=./api/... \
+		paths=./$(EXP_DIR)/api/... \
 		object:headerFile=./hack/boilerplate/boilerplate.generatego.txt
 
 	$(CONVERSION_GEN) \
@@ -186,12 +188,14 @@ generate-go: $(CONTROLLER_GEN) $(MOCKGEN) $(CONVERSION_GEN) ## Runs Go related g
 generate-manifests: $(CONTROLLER_GEN) ## Generate manifests e.g. CRD, RBAC etc.
 	$(CONTROLLER_GEN) \
 		paths=./api/... \
+		paths=./$(EXP_DIR)/api/... \
 		crd:crdVersions=v1 \
 		output:crd:dir=$(CRD_ROOT) \
 		output:webhook:dir=$(WEBHOOK_ROOT) \
 		webhook
 	$(CONTROLLER_GEN) \
 		paths=./controllers/... \
+		paths=./$(EXP_DIR)/controllers/... \
 		output:rbac:dir=$(RBAC_ROOT) \
 		rbac:roleName=manager-role
 

exp/PROJECT

@@ -0,0 +1,4 @@
+domain: exp.infrastructure.x-k8s.io
+repo: sigs.k8s.io/cluster-api-provider-azure/exp
+version: "2"
+resources: []

exp/README.md

@@ -0,0 +1,9 @@
+# exp
+
+This subrepository holds experimental code and API types.
+
+**Warning**: Packages here are experimental and unreliable. Some may one day be promoted to the main repository, or they may be modified arbitrarily or even disappear altogether.
+
+In short, code in this subrepository is not subject to any compatibility or deprecation promise.
+
+For policy around graduation timeline, see [Cluster API Exp](https://github.com/kubernetes-sigs/cluster-api/tree/master/exp).

exp/api/v1alpha3/groupversion_info.go

@@ -0,0 +1,36 @@
+/*
+Copyright 2020 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package v1alpha3 contains API Schema definitions for the exp v1alpha3 API group
+// +kubebuilder:object:generate=true
+// +groupName=exp.infrastructure.cluster.x-k8s.io
+package v1alpha3
+
+import (
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"sigs.k8s.io/controller-runtime/pkg/scheme"
+)
+
+var (
+	// GroupVersion is group version used to register these objects
+	GroupVersion = schema.GroupVersion{Group: "exp.infrastructure.cluster.x-k8s.io", Version: "v1alpha3"}
+
+	// SchemeBuilder is used to add go types to the GroupVersionKind scheme
+	SchemeBuilder = &scheme.Builder{GroupVersion: GroupVersion}
+
+	// AddToScheme adds the types in this group-version to the given scheme.
+	AddToScheme = SchemeBuilder.AddToScheme
+)

exp/controllers/.gitkeep

@@ -0,0 +1,17 @@
+/*
+Copyright 2020 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package exp