/
hotplug_controller.go
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/
hotplug_controller.go
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/*
Copyright 2021 KubeCube 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 hotplug
import (
"context"
"fmt"
"sigs.k8s.io/controller-runtime/pkg/manager"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
hotplugv1 "github.com/kubecube-io/kubecube/pkg/apis/hotplug/v1"
"github.com/kubecube-io/kubecube/pkg/warden/utils"
"k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/types"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"github.com/kubecube-io/kubecube/pkg/clog"
)
const (
common = "common"
fail = "fail"
success = "success"
enabled = "enabled"
disabled = "disabled"
)
var _ reconcile.Reconciler = &HotplugReconciler{}
// HotplugReconciler reconciles a Hotplug object
type HotplugReconciler struct {
client.Client
Scheme *runtime.Scheme
isMemberCluster bool
clusterName string
}
func newReconciler(mgr manager.Manager, isMemberCluster bool, clusterName string) (*HotplugReconciler, error) {
r := &HotplugReconciler{
Client: mgr.GetClient(),
Scheme: mgr.GetScheme(),
isMemberCluster: isMemberCluster,
clusterName: clusterName,
}
return r, nil
}
//+kubebuilder:rbac:groups=hotplug.kubecube.io,resources=hotplugs,verbs=get;list;watch;create;update;patch;delete
//+kubebuilder:rbac:groups=hotplug.kubecube.io,resources=hotplugs/status,verbs=get;update;patch
//+kubebuilder:rbac:groups=hotplug.kubecube.io,resources=hotplugs/finalizers,verbs=update
// list/watch hotplug config and helm install/upgrade components
// 1、get change config and parse
// 2、judge is change
// 3、install/upgrade component
func (h *HotplugReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
log := clog.WithName("controller").WithValues("hotplug", req.NamespacedName)
// get hotplug info
commonConfig := hotplugv1.Hotplug{}
clusterConfig := hotplugv1.Hotplug{}
hotplugConfig := hotplugv1.Hotplug{}
switch req.Name {
case common:
err := h.Client.Get(ctx, req.NamespacedName, &commonConfig)
if err != nil {
if errors.IsNotFound(err) {
return ctrl.Result{}, nil
}
log.Error("get common hotplug fail, %v", err)
return ctrl.Result{}, err
}
err = h.Client.Get(ctx, types.NamespacedName{Name: utils.Cluster}, &clusterConfig)
if err != nil {
if !errors.IsNotFound(err) {
log.Error("get cluster hotplug fail, %v", err)
return ctrl.Result{}, err
}
// cluster config is nil
hotplugConfig = MergeHotplug(commonConfig, clusterConfig)
} else {
hotplugConfig = MergeHotplug(commonConfig, clusterConfig)
}
case utils.Cluster:
err := h.Client.Get(ctx, req.NamespacedName, &clusterConfig)
if err != nil {
if errors.IsNotFound(err) {
return ctrl.Result{}, nil
}
log.Error("get cluster hotplug fail, %v", err)
return ctrl.Result{}, err
}
err = h.Client.Get(ctx, types.NamespacedName{Name: common}, &commonConfig)
if err != nil {
log.Warn("get common hotplug fail, %v", err)
return ctrl.Result{}, err
}
hotplugConfig = MergeHotplug(commonConfig, clusterConfig)
default:
log.Warn("this hotplug not match this cluster, %s != %s", req.Name, utils.Cluster)
return ctrl.Result{}, nil
}
// helm do
results := []*hotplugv1.DeployResult{}
helm := NewHelm()
for _, c := range hotplugConfig.Spec.Component {
namespace := c.Namespace
name := c.Name
result := &hotplugv1.DeployResult{Name: name, Status: c.Status}
results = append(results, result)
// audit not use helm
if name == "audit" {
addSuccessResult(result, fmt.Sprintf("audit is %v", c.Status))
continue
}
// release status
isReleaseExist := false
release, err := helm.Status(namespace, name)
if err != nil {
log.Info("%v can not get status from release info, %v", name, err)
isReleaseExist = false
} else {
if release.Info.Status == "deployed" {
isReleaseExist = true
}
}
// start helm doing
if !isReleaseExist {
if c.Status != enabled {
// release no exist & disabled, do nothing
addSuccessResult(result, "uninstalled")
continue
} else {
// release no exist & enable, need install
envs, err := YamlStringToJson(c.Env)
if err != nil {
addFailResult(result, fmt.Sprintf("parse env yaml fail, %v", err))
continue
}
_, err = helm.Install(namespace, name, c.PkgName, envs)
if err != nil {
addFailResult(result, fmt.Sprintf("helm install fail, %v", err))
continue
}
addSuccessResult(result, "helm install success")
}
} else {
if c.Status != enabled {
// release exist & disabled, need uninstall
err := helm.Uninstall(namespace, name)
if err != nil {
addFailResult(result, fmt.Sprintf("helm uninstall fail, %v", err))
continue
}
addSuccessResult(result, "helm uninstall success")
} else {
// release exist & enabled, need upgrade
envs, err := YamlStringToJson(c.Env)
if err != nil {
addFailResult(result, fmt.Sprintf("parse env yaml fail, %v", err))
continue
}
// get release values
values, err := helm.GetValues(namespace, name)
if err != nil {
addFailResult(result, fmt.Sprintf("helm get values fail, %v", err))
continue
}
if JudgeJsonEqual(envs, values) {
addSuccessResult(result, "release is running")
continue
}
_, err = helm.Upgrade(namespace, name, c.PkgName, envs)
if err != nil {
addFailResult(result, fmt.Sprintf("helm upgrade fail, %v", err))
continue
}
addSuccessResult(result, "upgrade success")
}
}
}
phase := success
for _, r := range results {
if r.Result == fail {
phase = fail
continue
}
if !h.isMemberCluster {
updateConfigMap(ctx, h.Client, r)
}
}
// update status
commonConfig.Status.Phase = phase
commonConfig.Status.Results = results
err := h.Client.Status().Update(ctx, &commonConfig)
if err != nil {
log.Error("update common hotplug fail, %v", err)
return ctrl.Result{}, err
}
if req.Name == utils.Cluster {
clusterConfig.Status.Phase = phase
clusterConfig.Status.Results = results
err := h.Client.Status().Update(ctx, &clusterConfig)
if err != nil {
log.Error("update cluster %v hotplug fail, %v", req.Name, err)
return ctrl.Result{}, err
}
}
return ctrl.Result{}, nil
}
func addSuccessResult(result *hotplugv1.DeployResult, message string) {
clog.Info("component:%s, message:%s", result.Name, message)
result.Result = success
result.Message = message
}
func addFailResult(result *hotplugv1.DeployResult, message string) {
clog.Warn("component:%s, message:%s", result.Name, message)
result.Result = fail
result.Message = message
}
// SetupWithManager sets up the controller with the Manager.
func SetupWithManager(mgr ctrl.Manager, isMemberCluster bool, clusterName string) error {
r, err := newReconciler(mgr, isMemberCluster, clusterName)
if err != nil {
return err
}
return ctrl.NewControllerManagedBy(mgr).
For(&hotplugv1.Hotplug{}).
Complete(r)
}