Initialize K3OSConfig CRD

The command:
```
kubebuilder create api --group config --version v1alpha1 --kind K3OSConfig
```

PROJECT

@@ -3,4 +3,8 @@ layout: go.kubebuilder.io/v2
 multigroup: true
 projectName: k3os-config-operator
 repo: github.com/annismckenzie/k3os-config-operator
+resources:
+- group: config
+  kind: K3OSConfig
+  version: v1alpha1
 version: 3-alpha

apis/config/v1alpha1/groupversion_info.go

@@ -0,0 +1,44 @@
+/*
+MIT License
+
+Copyright (c) 2021 Daniel Lohse
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+// Package v1alpha1 contains API Schema definitions for the config v1alpha1 API group
+// +kubebuilder:object:generate=true
+// +groupName=config.operators.annismckenzie.github.com
+package v1alpha1
+
+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: "config.operators.annismckenzie.github.com", Version: "v1alpha1"}
+
+	// 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
+)

apis/config/v1alpha1/k3osconfig_types.go

@@ -0,0 +1,72 @@
+/*
+MIT License
+
+Copyright (c) 2021 Daniel Lohse
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+package v1alpha1
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+// EDIT THIS FILE!  THIS IS SCAFFOLDING FOR YOU TO OWN!
+// NOTE: json tags are required.  Any new fields you add must have json tags for the fields to be serialized.
+
+// K3OSConfigSpec defines the desired state of K3OSConfig
+type K3OSConfigSpec struct {
+	// INSERT ADDITIONAL SPEC FIELDS - desired state of cluster
+	// Important: Run "make" to regenerate code after modifying this file
+
+	// Foo is an example field of K3OSConfig. Edit K3OSConfig_types.go to remove/update
+	Foo string `json:"foo,omitempty"`
+}
+
+// K3OSConfigStatus defines the observed state of K3OSConfig
+type K3OSConfigStatus struct {
+	// INSERT ADDITIONAL STATUS FIELD - define observed state of cluster
+	// Important: Run "make" to regenerate code after modifying this file
+}
+
+// +kubebuilder:object:root=true
+// +kubebuilder:subresource:status
+
+// K3OSConfig is the Schema for the k3osconfigs API
+type K3OSConfig struct {
+	metav1.TypeMeta   `json:",inline"`
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+
+	Spec   K3OSConfigSpec   `json:"spec,omitempty"`
+	Status K3OSConfigStatus `json:"status,omitempty"`
+}
+
+// +kubebuilder:object:root=true
+
+// K3OSConfigList contains a list of K3OSConfig
+type K3OSConfigList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata,omitempty"`
+	Items           []K3OSConfig `json:"items"`
+}
+
+func init() {
+	SchemeBuilder.Register(&K3OSConfig{}, &K3OSConfigList{})
+}

config/crd/bases/config.operators.annismckenzie.github.com_k3osconfigs.yaml

@@ -0,0 +1,58 @@
+
+---
+apiVersion: apiextensions.k8s.io/v1beta1
+kind: CustomResourceDefinition
+metadata:
+  annotations:
+    controller-gen.kubebuilder.io/version: v0.2.2
+  creationTimestamp: null
+  name: k3osconfigs.config.operators.annismckenzie.github.com
+spec:
+  group: config.operators.annismckenzie.github.com
+  names:
+    kind: K3OSConfig
+    listKind: K3OSConfigList
+    plural: k3osconfigs
+    singular: k3osconfig
+  scope: ""
+  subresources:
+    status: {}
+  validation:
+    openAPIV3Schema:
+      description: K3OSConfig is the Schema for the k3osconfigs API
+      properties:
+        apiVersion:
+          description: 'APIVersion defines the versioned schema of this representation
+            of an object. Servers should convert recognized schemas to the latest
+            internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources'
+          type: string
+        kind:
+          description: 'Kind is a string value representing the REST resource this
+            object represents. Servers may infer this from the endpoint the client
+            submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds'
+          type: string
+        metadata:
+          type: object
+        spec:
+          description: K3OSConfigSpec defines the desired state of K3OSConfig
+          properties:
+            foo:
+              description: Foo is an example field of K3OSConfig. Edit K3OSConfig_types.go
+                to remove/update
+              type: string
+          type: object
+        status:
+          description: K3OSConfigStatus defines the observed state of K3OSConfig
+          type: object
+      type: object
+  version: v1alpha1
+  versions:
+  - name: v1alpha1
+    served: true
+    storage: true
+status:
+  acceptedNames:
+    kind: ""
+    plural: ""
+  conditions: []
+  storedVersions: []

config/crd/kustomization.yaml

@@ -0,0 +1,21 @@
+# This kustomization.yaml is not intended to be run by itself,
+# since it depends on service name and namespace that are out of this kustomize package.
+# It should be run by config/default
+resources:
+- bases/config.operators.annismckenzie.github.com_k3osconfigs.yaml
+# +kubebuilder:scaffold:crdkustomizeresource
+
+patchesStrategicMerge:
+# [WEBHOOK] To enable webhook, uncomment all the sections with [WEBHOOK] prefix.
+# patches here are for enabling the conversion webhook for each CRD
+#- patches/webhook_in_k3osconfigs.yaml
+# +kubebuilder:scaffold:crdkustomizewebhookpatch
+
+# [CERTMANAGER] To enable webhook, uncomment all the sections with [CERTMANAGER] prefix.
+# patches here are for enabling the CA injection for each CRD
+#- patches/cainjection_in_k3osconfigs.yaml
+# +kubebuilder:scaffold:crdkustomizecainjectionpatch
+
+# the following config is for teaching kustomize how to do kustomization for CRDs.
+configurations:
+- kustomizeconfig.yaml

config/crd/kustomizeconfig.yaml

@@ -0,0 +1,17 @@
+# This file is for teaching kustomize how to substitute name and namespace reference in CRD
+nameReference:
+- kind: Service
+  version: v1
+  fieldSpecs:
+  - kind: CustomResourceDefinition
+    group: apiextensions.k8s.io
+    path: spec/conversion/webhookClientConfig/service/name
+
+namespace:
+- kind: CustomResourceDefinition
+  group: apiextensions.k8s.io
+  path: spec/conversion/webhookClientConfig/service/namespace
+  create: false
+
+varReference:
+- path: metadata/annotations

config/crd/patches/cainjection_in_k3osconfigs.yaml

@@ -0,0 +1,8 @@
+# The following patch adds a directive for certmanager to inject CA into the CRD
+# CRD conversion requires k8s 1.13 or later.
+apiVersion: apiextensions.k8s.io/v1beta1
+kind: CustomResourceDefinition
+metadata:
+  annotations:
+    cert-manager.io/inject-ca-from: $(CERTIFICATE_NAMESPACE)/$(CERTIFICATE_NAME)
+  name: k3osconfigs.config.operators.annismckenzie.github.com

config/crd/patches/webhook_in_k3osconfigs.yaml

@@ -0,0 +1,17 @@
+# The following patch enables conversion webhook for CRD
+# CRD conversion requires k8s 1.13 or later.
+apiVersion: apiextensions.k8s.io/v1beta1
+kind: CustomResourceDefinition
+metadata:
+  name: k3osconfigs.config.operators.annismckenzie.github.com
+spec:
+  conversion:
+    strategy: Webhook
+    webhookClientConfig:
+      # this is "\n" used as a placeholder, otherwise it will be rejected by the apiserver for being blank,
+      # but we're going to set it later using the cert-manager (or potentially a patch if not using cert-manager)
+      caBundle: Cg==
+      service:
+        namespace: system
+        name: webhook-service
+        path: /convert