update demo

Signed-off-by: dragonflylee <dragonflylee@outlook.com>
2023-11-07 10:40:16 +08:00
parent b2972195cb
commit 696f6ba425
12 changed files with 231 additions and 10 deletions
--- a/2
+++ b/2
@@ -1,6 +1,8 @@

 # Image URL to use all building/pushing image targets
 IMG ?= localhost:5000/monitor
+
+# Makefile
 CONTROLLER_GEN = bin/controller-gen

 CI_COMMIT ?= $(shell git rev-parse --short HEAD)
--- a/apis/v1/crd_types.go
+++ b/apis/v1/crd_types.go
@@ -0,0 +1 @@
+package v1
--- a/apis/v1/groupversion_info.go
+++ b/apis/v1/groupversion_info.go
@@ -0,0 +1,18 @@
+// +kubebuilder:object:generate=true
+// +groupName=demo.io
+package v1
+
+import (
+	ctrl "sigs.k8s.io/controller-runtime"
+)
+
+var (
+	// GroupVersion is group version used to register these objects
+	GroupVersion = ctrl.GroupVersion{Group: "demo.io", Version: "v1"}
+
+	// SchemeBuilder is used to add go types to the GroupVersionKind scheme
+	SchemeBuilder = &ctrl.SchemeBuilder{GroupVersion: GroupVersion}
+
+	// AddToScheme adds the types in this group-version to the given scheme.
+	AddToScheme = SchemeBuilder.AddToScheme
+)
--- a/config/kustomization.yaml
+++ b/config/kustomization.yaml
@@ -3,18 +3,15 @@ namespace: kube-system
 generatorOptions:
  disableNameSuffixHash: true

-namePrefix: monitor-
+namePrefix: demo-

 commonLabels:
-  app: monitor
+  app: demo

 resources:
 - rbac/service_account.yaml
 - rbac/role.yaml
- rbac/leader_election_role.yaml
 - rbac/role_binding.yaml
- webhook/manifests.yaml
- webhook/service.yaml
 - deployment.yaml

 patchesStrategicMerge:
@@ -27,5 +24,5 @@ apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 images:
 - name: controller
-  newName: localhost:5000/monitor
+  newName: localhost:5000/demo

--- a/docs/manager.drawio
+++ b/docs/manager.drawio
@@ -0,0 +1,22 @@
+<mxfile host="65bd71144e">
+    <diagram id="MNM1TiEP8gX_f5g81jJT" name="Manager">
+        <mxGraphModel dx="1454" dy="668" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="827" pageHeight="1169" math="0" shadow="0">
+            <root>
+                <mxCell id="0"/>
+                <mxCell id="1" parent="0"/>
+                <mxCell id="6" value="&lt;font style=&quot;font-size: 20px;&quot;&gt;ControllerManager&lt;/font&gt;" style="rounded=0;whiteSpace=wrap;html=1;fontFamily=Comic Sans MS;fontSize=12;align=center;fillColor=#d5e8d4;strokeColor=#82b366;comic=1;labelPosition=center;verticalLabelPosition=top;verticalAlign=bottom;" vertex="1" parent="1">
+                    <mxGeometry x="115" y="180" width="190" height="250" as="geometry"/>
+                </mxCell>
+                <mxCell id="2" value="&lt;font style=&quot;font-size: 20px;&quot; face=&quot;Comic Sans MS&quot;&gt;Manager&lt;/font&gt;" style="rounded=0;whiteSpace=wrap;html=1;comic=1;" vertex="1" parent="1">
+                    <mxGeometry x="150" y="80" width="120" height="60" as="geometry"/>
+                </mxCell>
+                <mxCell id="4" value="&lt;font style=&quot;font-size: 20px;&quot; face=&quot;Comic Sans MS&quot;&gt;Runnables&lt;/font&gt;" style="rounded=0;whiteSpace=wrap;html=1;comic=1;fillColor=#f8cecc;strokeColor=#b85450;" vertex="1" parent="1">
+                    <mxGeometry x="150" y="240" width="120" height="60" as="geometry"/>
+                </mxCell>
+                <mxCell id="5" value="&lt;font style=&quot;font-size: 20px;&quot; face=&quot;Comic Sans MS&quot;&gt;Clusters&lt;/font&gt;" style="rounded=0;whiteSpace=wrap;html=1;comic=1;fillColor=#dae8fc;strokeColor=#6c8ebf;" vertex="1" parent="1">
+                    <mxGeometry x="150" y="330" width="120" height="60" as="geometry"/>
+                </mxCell>
+            </root>
+        </mxGraphModel>
+    </diagram>
+</mxfile>
--- a/go.mod
+++ b/go.mod
@@ -6,5 +6,6 @@ require (
 	go.uber.org/zap v1.19.1
 	k8s.io/api v0.23.5
 	k8s.io/apimachinery v0.23.5
+	k8s.io/client-go v0.23.5
 	sigs.k8s.io/controller-runtime v0.11.2
 )
--- a/pkg/apis/v1/groupversion_info.go
+++ b/pkg/apis/v1/groupversion_info.go
@@ -1,6 +1,6 @@
 // +kubebuilder:object:generate=true
-// +groupName=demo.io
-package v1
+// +groupName=monitor.io
+package v1alpha1

 import (
 	ctrl "sigs.k8s.io/controller-runtime"
@@ -8,7 +8,7 @@ import (

 var (
 	// GroupVersion is group version used to register these objects
-	GroupVersion = ctrl.GroupVersion{Group: "demo.io", Version: "v1"}
+	GroupVersion = ctrl.GroupVersion{Group: "monitor.io", Version: "v1"}

 	// SchemeBuilder is used to add go types to the GroupVersionKind scheme
 	SchemeBuilder = &ctrl.SchemeBuilder{GroupVersion: GroupVersion}
--- a/pkg/k8s/k8s.go
+++ b/pkg/k8s/k8s.go
@@ -5,7 +5,7 @@ import (
 	"net/http"
 	"net/http/pprof"

-	v1 "monitor/pkg/apis/v1"
+	v1 "monitor/apis/v1"

 	corev1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/runtime"
--- a/tests/README.md
+++ b/tests/README.md
@@ -0,0 +1,11 @@
+
+```bash
+
+docker build --network host -t devkitpro/devkita64 - << EOF
+FROM devkitpro/devkita64:20231108
+RUN sed -i 's/deb.debian.org/mirrors.aliyun.com/g' /etc/apt/sources.list \
+  && apt-get update && apt-get install -y --no-install-recommends nodejs \
+  && rm -rf /var/lib/apt/lists/* /usr/share/man/*
+EOF
+
+```
--- a/tests/ctrl/main.go
+++ b/tests/ctrl/main.go
@@ -0,0 +1,62 @@
+package tests
+
+import (
+	"context"
+	"os"
+
+	appsv1 "k8s.io/api/apps/v1"
+	corev1 "k8s.io/api/core/v1"
+	ctrl "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+	"sigs.k8s.io/controller-runtime/pkg/client/config"
+	"sigs.k8s.io/controller-runtime/pkg/handler"
+	"sigs.k8s.io/controller-runtime/pkg/source"
+)
+
+type podReconcile struct {
+	client.Client
+}
+
+func (r *podReconcile) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
+	rs := &appsv1.ReplicaSet{}
+	err := r.Get(ctx, req.NamespacedName, rs)
+	if err != nil {
+		return ctrl.Result{}, err
+	}
+	// DoSometing
+	return ctrl.Result{}, nil
+}
+
+func (r *podReconcile) InjectClient(c client.Client) error {
+	r.Client = c
+	return nil
+}
+
+func main() {
+	log := ctrl.Log.WithName("entrypoint")
+
+	// 初始化 manager，同时生成一个默认配置的 Cache
+	mgr, err := ctrl.NewManager(config.GetConfigOrDie(), ctrl.Options{})
+	if err != nil {
+		log.Error(err, "unable to set up overall controller manager")
+	}
+	// 注册 scheme
+	if err = corev1.AddToScheme(mgr.GetScheme()); err != nil {
+		log.Error(err, "unable to add scheme")
+	}
+
+	// 创建新的 controller
+	err = ctrl.NewControllerManagedBy(mgr).For(&appsv1.ReplicaSet{}).
+		// 当 Pod 变更时，也触发 ReplicaSet
+		Watches(&source.Kind{Type: &corev1.Pod{}}, &handler.EnqueueRequestForObject{}).
+		Complete(&podReconcile{})
+	if err != nil {
+		log.Error(err, "unable to add controller")
+	}
+
+	// 启动 manager
+	if err = mgr.Start(ctrl.SetupSignalHandler()); err != nil {
+		log.Error(err, "unable to run manager")
+		os.Exit(1)
+	}
+}
--- a/tests/informer/informer.go
+++ b/tests/informer/informer.go
@@ -0,0 +1,52 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"log"
+	"path/filepath"
+
+	"k8s.io/client-go/informers"
+	"k8s.io/client-go/kubernetes"
+	"k8s.io/client-go/tools/cache"
+	"k8s.io/client-go/tools/clientcmd"
+	"k8s.io/client-go/util/homedir"
+)
+
+func main() {
+	var kubeconfig string
+
+	flag.StringVar(&kubeconfig, "kubeconfig", filepath.Join(homedir.HomeDir(), ".kube", "config"), "(optional) absolute path to the kubeconfig file")
+	flag.Parse()
+	// use the current context in kubeconfig
+	config, err := clientcmd.BuildConfigFromFlags("", kubeconfig)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	ctx := context.Background()
+
+	AddPod := func(obj interface{}) {
+
+	}
+	DeletePod := func(obj interface{}) {
+
+	}
+	UpdatePod := func(oldObj, newObj interface{}) {
+
+	}
+
+	clientset := kubernetes.NewForConfigOrDie(config)
+	// 基于GVK 操作资源，假设需要操作数十种不同资源时，我们需要为每一种资源实现各自的函数
+	podInformer := informers.NewSharedInformerFactory(clientset, 0).
+		Core().V1().Pods().Informer()
+	podInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{
+		AddFunc:    AddPod,
+		DeleteFunc: DeletePod,
+		UpdateFunc: UpdatePod,
+	})
+	// 启动informer
+	podInformer.Run(ctx.Done())
+	cache.WaitForCacheSync(ctx.Done(), podInformer.HasSynced)
+	// 此处没有使用workqueue，但一般都是会用workqueue 增强处理逻辑的
+}
--- a/tests/watch/watch.go
+++ b/tests/watch/watch.go
@@ -0,0 +1,55 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"log"
+	"path/filepath"
+
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/watch"
+	"k8s.io/client-go/kubernetes"
+	"k8s.io/client-go/tools/clientcmd"
+	"k8s.io/client-go/util/homedir"
+)
+
+func main() {
+	var kubeconfig string
+
+	flag.StringVar(&kubeconfig, "kubeconfig", filepath.Join(homedir.HomeDir(), ".kube", "config"), "(optional) absolute path to the kubeconfig file")
+	flag.Parse()
+	// use the current context in kubeconfig
+	config, err := clientcmd.BuildConfigFromFlags("", kubeconfig)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	ctx := context.Background()
+	// 创建 clientset
+	clientset, err := kubernetes.NewForConfig(config)
+	if err != nil {
+		log.Fatal(err)
+	}
+	// 使用 clientsent 监听 kube-system 下 Pod 对象
+	list, err := clientset.CoreV1().Pods("kube-system").
+		Watch(ctx, metav1.ListOptions{Watch: true})
+	if err != nil {
+		log.Fatal(err)
+	}
+	for event := range list.ResultChan() {
+		pod := event.Object.(*corev1.Pod)
+		switch event.Type {
+		case watch.Added:
+			fmt.Printf("Pod %s added\n", pod.Name)
+			// todo: reconcile logic goes here
+		case watch.Modified:
+			fmt.Printf("Pod %s modified\n", pod.Name)
+			// todo: reconcile logic goes here
+		case watch.Deleted:
+			fmt.Printf("Pod %s deleted\n", pod.Name)
+			// todo: reconcile logic goes here
+		}
+	}
+}