chore: add helm chart to repo

Signed-off-by: r3drun3 <simone.ragonesi@sighup.io>

Makefile

@@ -1,3 +1,5 @@
+# Set the shell to bash always
+SHELL := /bin/bash
 
 # Image URL to use all building/pushing image targets
 IMG ?= controller:latest
@@ -151,6 +153,19 @@ deploy: manifests kustomize ## Deploy controller to the K8s cluster specified in
 undeploy: ## Undeploy controller from the K8s cluster specified in ~/.kube/config. Call with ignore-not-found=true to ignore resource not found errors during deletion.
 	$(KUSTOMIZE) build config/default | $(KUBECTL) delete --ignore-not-found=$(ignore-not-found) -f -
 
+
+######################### Helmify #########################
+HELMIFY=$(shell which helmify)
+
+.PHONY: helmify
+helmify: $(HELMIFY) ## Download helmify locally if necessary.
+$(HELMIFY): $(LOCALBIN)
+	test -s $(LOCALBIN)/helmify || GOBIN=$(LOCALBIN) go install github.com/arttor/helmify/cmd/helmify@v0.4.5
+
+.PHONY: helm
+helm: manifests kustomize helmify ## Produce operator helm charts
+	$(KUSTOMIZE) build config/default | $(HELMIFY) ./charts
+
 ##@ Build Dependencies
 
 ## Location to install dependencies to

README.md

@@ -74,6 +74,8 @@ Deployment
   uninstall        Uninstall CRDs from the K8s cluster specified in ~/.kube/config. Call with ignore-not-found=true to ignore resource not found errors during deletion.
   deploy           Deploy controller to the K8s cluster specified in ~/.kube/config.
   undeploy         Undeploy controller from the K8s cluster specified in ~/.kube/config. Call with ignore-not-found=true to ignore resource not found errors during deletion.
+  helmify          Download helmify locally if necessary.
+  helm             Produce operator helm charts
 
 Build Dependencies
   kustomize        Download kustomize locally if necessary. If wrong version is installed, it will be removed before downloading.
@@ -234,7 +236,7 @@ spec:
     matchLabels:
       app: nginx
 status:
-  numPodsDestroyed: 9
+  numPodsDestroyed: 7
 ```  
 
 The `status` spec tells you how many pods have been successfully destroyed.  
@@ -854,6 +856,14 @@ khaos-controller-manager-8887957bf-5b8g9   2/2     Running               0
 > [!NOTE]  
 > If you encounter RBAC errors, you may need to grant yourself cluster-admin privileges or be logged in as admin.  
 
+The *Makefile* also contains a target to build the operator's *Helm chart* with [*helmify*](https://github.com/arttor/helmify).  
+You can build the helm chart with the following command (once you are inside the project's root):  
+```console
+make helm
+```  
+As of right now, the charts are put inside the `charts` folder and not published to a registry or a repo.  
+
+
 
 ## Operator Image Signature Verification
 The `realease` pipeline sign the operator's *OCI image* with [cosign](https://docs.sigstore.dev/signing/quickstart/).  

charts/.helmignore

@@ -0,0 +1,23 @@
+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

charts/Chart.yaml

@@ -0,0 +1,21 @@
+apiVersion: v2
+name: charts
+description: A Helm chart for Kubernetes
+# A chart can be either an 'application' or a 'library' chart.
+#
+# Application charts are a collection of templates that can be packaged into versioned archives
+# to be deployed.
+#
+# Library charts provide useful utilities or functions for the chart developer. They're included as
+# a dependency of application charts to inject those utilities and functions into the rendering
+# pipeline. Library charts do not define any templates and therefore cannot be deployed.
+type: application
+# This is the chart version. This version number should be incremented each time you make changes
+# to the chart and its templates, including the app version.
+# Versions are expected to follow Semantic Versioning (https://semver.org/)
+version: 0.1.0
+# This is the version number of the application being deployed. This version number should be
+# incremented each time you make changes to the application. Versions are not expected to
+# follow Semantic Versioning. They should reflect the version the application is using.
+# It is recommended to use it with quotes.
+appVersion: "0.1.0"

charts/templates/_helpers.tpl

@@ -0,0 +1,62 @@
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "charts.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "charts.fullname" -}}
+{{- if .Values.fullnameOverride }}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- $name := default .Chart.Name .Values.nameOverride }}
+{{- if contains $name .Release.Name }}
+{{- .Release.Name | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+{{- end }}
+{{- end }}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "charts.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "charts.labels" -}}
+helm.sh/chart: {{ include "charts.chart" . }}
+{{ include "charts.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "charts.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "charts.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "charts.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "charts.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}

charts/templates/apiserveroverload-crd.yaml

@@ -0,0 +1,54 @@
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  name: apiserveroverloads.khaos.stackzoo.io
+  annotations:
+    controller-gen.kubebuilder.io/version: v0.13.0
+  labels:
+  {{- include "charts.labels" . | nindent 4 }}
+spec:
+  group: khaos.stackzoo.io
+  names:
+    kind: ApiServerOverload
+    listKind: ApiServerOverloadList
+    plural: apiserveroverloads
+    singular: apiserveroverload
+  scope: Namespaced
+  versions:
+  - name: v1alpha1
+    schema:
+      openAPIV3Schema:
+        description: ApiServerOverload is the Schema for the apiserveroverloads 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: ApiServerOverloadSpec defines the desired state of ApiServerOverload
+            type: object
+          status:
+            description: ApiServerOverloadStatus defines the observed state of ApiServerOverload
+            properties:
+              executedTimestamp:
+                type: string
+            type: object
+        type: object
+    served: true
+    storage: true
+    subresources:
+      status: {}
+status:
+  acceptedNames:
+    kind: ""
+    plural: ""
+  conditions: []
+  storedVersions: []

charts/templates/commandinjection-crd.yaml

@@ -0,0 +1,62 @@
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  name: commandinjections.khaos.stackzoo.io
+  annotations:
+    controller-gen.kubebuilder.io/version: v0.13.0
+  labels:
+  {{- include "charts.labels" . | nindent 4 }}
+spec:
+  group: khaos.stackzoo.io
+  names:
+    kind: CommandInjection
+    listKind: CommandInjectionList
+    plural: commandinjections
+    singular: commandinjection
+  scope: Namespaced
+  versions:
+  - name: v1alpha1
+    schema:
+      openAPIV3Schema:
+        description: CommandInjection is the Schema for the commandinjections 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: CommandInjectionSpec defines the desired state of CommandInjection
+            properties:
+              command:
+                type: string
+              deployment:
+                type: string
+              namespace:
+                type: string
+            type: object
+          status:
+            description: CommandInjectionStatus defines the observed state of CommandInjection
+            properties:
+              numPodsInjected:
+                format: int32
+                type: integer
+            type: object
+        type: object
+    served: true
+    storage: true
+    subresources:
+      status: {}
+status:
+  acceptedNames:
+    kind: ""
+    plural: ""
+  conditions: []
+  storedVersions: []

charts/templates/configmapdestroyer-crd.yaml

@@ -0,0 +1,62 @@
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  name: configmapdestroyers.khaos.stackzoo.io
+  annotations:
+    controller-gen.kubebuilder.io/version: v0.13.0
+  labels:
+  {{- include "charts.labels" . | nindent 4 }}
+spec:
+  group: khaos.stackzoo.io
+  names:
+    kind: ConfigMapDestroyer
+    listKind: ConfigMapDestroyerList
+    plural: configmapdestroyers
+    singular: configmapdestroyer
+  scope: Namespaced
+  versions:
+  - name: v1alpha1
+    schema:
+      openAPIV3Schema:
+        description: ConfigMapDestroyer is the Schema for the configmapdestroyers 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: ConfigMapDestroyerSpec defines the desired state of ConfigMapDestroyer
+            properties:
+              configMapNames:
+                items:
+                  type: string
+                type: array
+              namespace:
+                type: string
+            type: object
+          status:
+            description: ConfigMapDestroyerStatus defines the observed state of ConfigMapDestroyer
+            properties:
+              numConfigMapsDestroyed:
+                format: int32
+                type: integer
+            type: object
+        type: object
+    served: true
+    storage: true
+    subresources:
+      status: {}
+status:
+  acceptedNames:
+    kind: ""
+    plural: ""
+  conditions: []
+  storedVersions: []