feat: add events entropy gvk

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

PROJECT

@@ -80,4 +80,13 @@ resources:
   kind: ApiServerOverload
   path: stackzoo.io/khaos/api/v1alpha1
   version: v1alpha1
+- api:
+    crdVersion: v1
+    namespaced: true
+  controller: true
+  domain: stackzoo.io
+  group: khaos
+  kind: EventsEntropy
+  path: stackzoo.io/khaos/api/v1alpha1
+  version: v1alpha1
 version: "3"

README.md

@@ -24,6 +24,7 @@ Currently, Khaos does not implement *cronjobs*; any scheduling of Khaos Custom R
 - [X] Inject resource constraints in pods
 - [X] Add o remove labels in pods
 - [X] Flood api server with calls
+- [X] Create custom kubernetes events
 - [X] Exec commands inside pods (**experimental**).  
 
 
@@ -85,14 +86,15 @@ Install and list the operator CRDs with the following command:
 make install && kubectl get crds
 
 NAME                                       CREATED AT
-apiserveroverloads.khaos.stackzoo.io       2023-11-30T06:25:59Z
-commandinjections.khaos.stackzoo.io        2023-11-30T06:25:59Z
-configmapdestroyers.khaos.stackzoo.io      2023-11-30T06:25:59Z
-containerresourcechaos.khaos.stackzoo.io   2023-11-30T06:25:59Z
-nodedestroyers.khaos.stackzoo.io           2023-11-30T06:25:59Z
-poddestroyers.khaos.stackzoo.io            2023-11-30T06:25:59Z
-podlabelchaos.khaos.stackzoo.io            2023-11-30T06:25:59Z
-secretdestroyers.khaos.stackzoo.io         2023-11-30T06:25:59Z
+apiserveroverloads.khaos.stackzoo.io       2023-11-30T08:43:49Z
+commandinjections.khaos.stackzoo.io        2023-11-30T08:43:49Z
+configmapdestroyers.khaos.stackzoo.io      2023-11-30T08:43:49Z
+containerresourcechaos.khaos.stackzoo.io   2023-11-30T08:43:49Z
+eventsentropies.khaos.stackzoo.io          2023-11-30T08:43:49Z
+nodedestroyers.khaos.stackzoo.io           2023-11-30T08:43:49Z
+poddestroyers.khaos.stackzoo.io            2023-11-30T08:43:49Z
+podlabelchaos.khaos.stackzoo.io            2023-11-30T08:43:49Z
+secretdestroyers.khaos.stackzoo.io         2023-11-30T08:43:49Z
 ```  
 
 In order to run the operator on your cluster (current context - i.e. whatever cluster `kubectl cluster-info` shows) run:  
@@ -122,7 +124,7 @@ In vscode you need to create a `.vscode/launch.json` file similar to the followi
 
 
 
-## Examples
+## Some Examples
 
 In order to test the following examples, you can use the local *KinD* cluster (see the `Local Testing and Debugging` section).  
 Once you have the cluster up and running, procede to create a new namespace called `prod` and apply an example deployment:  
@@ -482,6 +484,60 @@ metadata:
 
 
 
+
+
+
+
+
+
+
+
+
+
+<details>
+  <summary>CREATE CUSTOM KUBERNETES EVENTS</summary>  
+
+Apply the following `EventsEntropy` manifest:  
+
+```yaml
+apiVersion: khaos.stackzoo.io/v1alpha1
+kind: EventsEntropy
+metadata:
+  name: example-eventsentropy
+spec:
+  events:
+    - "Custom event 1 with some gibberish - dfsdfsdffdgt egeg4e 😊"
+    - "Custom event 2 - with some gibberish dfsdfsdffdgt 676565 🥴"
+    - "Custom event 3 - with some gibberish 8/ihfwgf sufdh  🤪"
+
+```  
+
+```console
+kubectl apply -f examples/events-entropy.yaml
+```  
+
+Now retrieve kubernetes events via kubectl:  
+```console
+kubectl get events | grep gibberish
+
+<unknown>               Custom event 1 with some gibberish - dfsdfsdffdgt egeg4e 😊
+<unknown>               Custom event 3 - with some gibberish 8/ihfwgf sufdh  🤪
+<unknown>               Custom event 2 - with some gibberish dfsdfsdffdgt 676565 🥴
+
+```   
+
+
+</details>  
+
+
+
+
+
+
+
+
+
+
 <br/>  
 
 

api/v1alpha1/eventsentropy_types.go

@@ -0,0 +1,60 @@
+/*
+Copyright 2023.
+
+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 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.
+
+// EventsEntropySpec defines the desired state of EventsEntropy
+type EventsEntropySpec struct {
+	Events []string `json:"events"`
+}
+
+// EventsEntropyStatus defines the observed state of EventsEntropy
+type EventsEntropyStatus 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
+
+// EventsEntropy is the Schema for the eventsentropies API
+type EventsEntropy struct {
+	metav1.TypeMeta   `json:",inline"`
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+
+	Spec   EventsEntropySpec   `json:"spec,omitempty"`
+	Status EventsEntropyStatus `json:"status,omitempty"`
+}
+
+//+kubebuilder:object:root=true
+
+// EventsEntropyList contains a list of EventsEntropy
+type EventsEntropyList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata,omitempty"`
+	Items           []EventsEntropy `json:"items"`
+}
+
+func init() {
+	SchemeBuilder.Register(&EventsEntropy{}, &EventsEntropyList{})
+}

cmd/main.go

@@ -145,6 +145,13 @@ func main() {
 		setupLog.Error(err, "unable to create controller", "controller", "ApiServerOverload")
 		os.Exit(1)
 	}
+	if err = (&controller.EventsEntropyReconciler{
+		Client: mgr.GetClient(),
+		Scheme: mgr.GetScheme(),
+	}).SetupWithManager(mgr); err != nil {
+		setupLog.Error(err, "unable to create controller", "controller", "EventsEntropy")
+		os.Exit(1)
+	}
 	//+kubebuilder:scaffold:builder
 
 	if err := mgr.AddHealthzCheck("healthz", healthz.Ping); err != nil {

config/crd/bases/khaos.stackzoo.io_eventsentropies.yaml

@@ -0,0 +1,51 @@
+---
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  annotations:
+    controller-gen.kubebuilder.io/version: v0.13.0
+  name: eventsentropies.khaos.stackzoo.io
+spec:
+  group: khaos.stackzoo.io
+  names:
+    kind: EventsEntropy
+    listKind: EventsEntropyList
+    plural: eventsentropies
+    singular: eventsentropy
+  scope: Namespaced
+  versions:
+  - name: v1alpha1
+    schema:
+      openAPIV3Schema:
+        description: EventsEntropy is the Schema for the eventsentropies 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: EventsEntropySpec defines the desired state of EventsEntropy
+            properties:
+              events:
+                items:
+                  type: string
+                type: array
+            required:
+            - events
+            type: object
+          status:
+            description: EventsEntropyStatus defines the observed state of EventsEntropy
+            type: object
+        type: object
+    served: true
+    storage: true
+    subresources:
+      status: {}

config/crd/kustomization.yaml

@@ -10,6 +10,7 @@ resources:
 - bases/khaos.stackzoo.io_podlabelchaos.yaml
 - bases/khaos.stackzoo.io_configmapdestroyers.yaml
 - bases/khaos.stackzoo.io_apiserveroverloads.yaml
+- bases/khaos.stackzoo.io_eventsentropies.yaml
 #+kubebuilder:scaffold:crdkustomizeresource
 
 patches:
@@ -23,6 +24,7 @@ patches:
 #- path: patches/webhook_in_podlabelchaos.yaml
 #- path: patches/webhook_in_configmapdestroyers.yaml
 #- path: patches/webhook_in_apiserveroverloads.yaml
+#- path: patches/webhook_in_eventsentropies.yaml
 #+kubebuilder:scaffold:crdkustomizewebhookpatch
 
 # [CERTMANAGER] To enable cert-manager, uncomment all the sections with [CERTMANAGER] prefix.
@@ -35,6 +37,7 @@ patches:
 #- path: patches/cainjection_in_podlabelchaos.yaml
 #- path: patches/cainjection_in_configmapdestroyers.yaml
 #- path: patches/cainjection_in_apiserveroverloads.yaml
+#- path: patches/cainjection_in_eventsentropies.yaml
 #+kubebuilder:scaffold:crdkustomizecainjectionpatch
 
 # [WEBHOOK] To enable webhook, uncomment the following section

config/rbac/eventsentropy_editor_role.yaml

@@ -0,0 +1,31 @@
+# permissions for end users to edit eventsentropies.
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  labels:
+    app.kubernetes.io/name: clusterrole
+    app.kubernetes.io/instance: eventsentropy-editor-role
+    app.kubernetes.io/component: rbac
+    app.kubernetes.io/created-by: khaos
+    app.kubernetes.io/part-of: khaos
+    app.kubernetes.io/managed-by: kustomize
+  name: eventsentropy-editor-role
+rules:
+- apiGroups:
+  - khaos.stackzoo.io
+  resources:
+  - eventsentropies
+  verbs:
+  - create
+  - delete
+  - get
+  - list
+  - patch
+  - update
+  - watch
+- apiGroups:
+  - khaos.stackzoo.io
+  resources:
+  - eventsentropies/status
+  verbs:
+  - get