forked from chaosblade-io/chaosblade-operator
/
controller.go
337 lines (315 loc) · 11.7 KB
/
controller.go
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/*
* Copyright 1999-2020 Alibaba Group Holding Ltd.
*
* 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 chaosblade
import (
"context"
"encoding/json"
"fmt"
"time"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"sigs.k8s.io/controller-runtime/pkg/client"
"github.com/sirupsen/logrus"
"k8s.io/apimachinery/pkg/runtime"
"sigs.k8s.io/controller-runtime/pkg/controller"
"sigs.k8s.io/controller-runtime/pkg/handler"
"sigs.k8s.io/controller-runtime/pkg/manager"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
"sigs.k8s.io/controller-runtime/pkg/source"
"github.com/deepsola/chaosblade-operator/channel"
"github.com/deepsola/chaosblade-operator/exec"
"github.com/deepsola/chaosblade-operator/exec/model"
"github.com/deepsola/chaosblade-operator/pkg/apis/chaosblade/v1alpha1"
runtime2 "github.com/deepsola/chaosblade-operator/pkg/runtime"
"github.com/deepsola/chaosblade-operator/pkg/runtime/chaosblade"
"github.com/deepsola/chaosblade-operator/version"
)
const chaosbladeFinalizer = "finalizer.chaosblade.io"
/**
* USER ACTION REQUIRED: This is a scaffold file intended for the user to modify with their own Controller
* business logic. Delete these comments after modifying this file.*
*/
// Add creates a new ChaosBlade Controller and adds it to the Manager. The Manager will set fields on the Controller
// and Start it when the Manager is Started.
func Add(mgr manager.Manager) error {
if err := add(mgr, newReconciler(mgr)); err != nil {
return err
}
// add periodically clean up blade ticker
return mgr.Add(manager.RunnableFunc(func(s <-chan struct{}) error {
startPeriodicallyCleanUpBlade(mgr)
return nil
}))
}
// newReconciler returns a new reconcile.Reconciler
func newReconciler(mgr manager.Manager) *ReconcileChaosBlade {
cbClient := mgr.GetClient().(*channel.Client)
return &ReconcileChaosBlade{
client: cbClient,
scheme: mgr.GetScheme(),
Executor: exec.NewDispatcherExecutor(cbClient),
}
}
// add adds a new Controller to mgr with r as the reconcile.Reconciler
func add(mgr manager.Manager, rcb *ReconcileChaosBlade) error {
// Create a new controller
c, err := controller.New("chaosblade-controller", mgr, controller.Options{
Reconciler: rcb,
MaxConcurrentReconciles: runtime2.MaxConcurrentReconciles,
})
if err != nil {
return err
}
// Watch for changes to primary resource ChaosBlade
cb := v1alpha1.ChaosBlade{}
err = c.Watch(
&source.Kind{Type: &cb},
&handler.EnqueueRequestForObject{},
&SpecUpdatedPredicateForRunningPhase{})
if err != nil {
return err
}
if chaosblade.DaemonsetEnable {
//namespace, err := k8sutil.GetOperatorNamespace()
//if err != nil {
// return err
//}
//chaosblade.DaemonsetPodNamespace = namespace
//// deploy chaosblade tool
//if err := deployChaosBladeTool(rcb); err != nil {
// logrus.WithField("product", version.Product).WithError(err).Errorln("Failed to deploy chaosblade tool")
// return err
//}
logrus.WithField("product", version.Product).WithField("daemonset.enable", chaosblade.DaemonsetEnable).
Infoln("enable chaosblade-tool deamonset")
}
return nil
}
// if blade status is destroying
func startPeriodicallyCleanUpBlade(mgr manager.Manager) {
go func() {
cli := mgr.GetClient()
duration, err := time.ParseDuration(chaosblade.RemoveBladeInterval)
if err != nil {
logrus.Errorf("parse interval error: %v, use default interval: %s", err, chaosblade.DefaultRemoveBladeInterval)
duration, err = time.ParseDuration(chaosblade.DefaultRemoveBladeInterval)
chaosblade.RemoveBladeInterval = chaosblade.DefaultRemoveBladeInterval
if err != nil {
logrus.Fatalf("start periodically clean up blade, ticker error: %v", err)
}
}
// first clean up
periodicallyCleanUpBlade(cli, duration)
// ticker clean up
ticker := time.NewTicker(time.Second * time.Duration(duration.Seconds()))
logrus.Infof("start periodically clean up blade ticker, interval: %s", chaosblade.RemoveBladeInterval)
for range ticker.C {
periodicallyCleanUpBlade(cli, duration)
}
}()
}
func periodicallyCleanUpBlade(cli client.Client, interval time.Duration) {
results := &v1alpha1.ChaosBladeList{}
if err := cli.List(context.TODO(), results, &client.ListOptions{}); err != nil {
logrus.Errorf("periodically clean up, list blade error: %v", err)
}
logrus.Infof("periodically clean up blade, blade size: %d", len(results.Items))
for _, item := range results.Items {
if item.DeletionTimestamp == nil {
continue
}
sub := time.Now().Sub(item.DeletionTimestamp.Time)
if item.Status.Phase == v1alpha1.ClusterPhaseDestroying && sub.Seconds() > interval.Seconds() {
logrus.Infof("periodically clean up blade %s, deletion time: %s", item.Name, item.DeletionTimestamp.String())
// patch blade
if err := cli.Patch(context.TODO(),
&v1alpha1.ChaosBlade{
TypeMeta: metav1.TypeMeta{
APIVersion: "chaosblade.io/v1alpha1",
Kind: "ChaosBlade",
},
ObjectMeta: metav1.ObjectMeta{Name: item.Name},
},
client.RawPatch(types.MergePatchType, []byte(`{"metadata":{"finalizers":[]}}`)),
); err != nil {
logrus.Errorf("patch blade: %s, error: %v", item.Name, err)
}
}
}
}
// blank assignment to verify that ReconcileChaosBlade implements reconcile.Reconciler
var _ reconcile.Reconciler = &ReconcileChaosBlade{}
// ReconcileChaosBlade reconciles a ChaosBlade object
type ReconcileChaosBlade struct {
// This client, initialized using mgr.Client() above, is a split client
// that reads objects from the cache and writes to the apiserver
client *channel.Client
scheme *runtime.Scheme
Executor model.ExpController
}
// Reconcile reads that state of the cluster for a ChaosBlade object and makes changes based on the state read
// and what is in the ChaosBlade.Spec
// Note:
// The Controller will requeue the Request to be processed again if the returned error is non-nil or
// Result.Requeue is true, otherwise upon completion it will remove the work from the queue.
func (r *ReconcileChaosBlade) Reconcile(request reconcile.Request) (reconcile.Result, error) {
reqLogger := logrus.WithField("Request.Name", request.Name)
forget := reconcile.Result{}
// Fetch the RC instance
cb := &v1alpha1.ChaosBlade{}
err := r.client.Get(context.TODO(), request.NamespacedName, cb)
if err != nil {
return forget, nil
}
if len(cb.Spec.Experiments) == 0 {
return forget, nil
}
//reqLogger.Info(fmt.Sprintf("chaosblade obj: %+v", cb))
// Destroyed->delete
// Remove the Finalizer if the CR object status is destroyed to delete it
if cb.Status.Phase == v1alpha1.ClusterPhaseDestroyed {
cb.SetFinalizers(remove(cb.GetFinalizers(), chaosbladeFinalizer))
err := r.client.Update(context.TODO(), cb)
if err != nil {
reqLogger.WithError(err).Errorln("remove chaosblade finalizer failed at destroyed phase")
}
return forget, nil
}
if cb.Status.Phase == v1alpha1.ClusterPhaseDestroying || cb.GetDeletionTimestamp() != nil {
err := r.finalizeChaosBlade(reqLogger, cb)
if err != nil {
reqLogger.WithError(err).Errorln("finalize chaosblade failed at destroying phase")
}
return forget, nil
}
// Initial->Initialized
if cb.Status.Phase == v1alpha1.ClusterPhaseInitial {
if contains(cb.GetFinalizers(), chaosbladeFinalizer) {
cb.Status.Phase = v1alpha1.ClusterPhaseInitialized
cb.Status.ExpStatuses = make([]v1alpha1.ExperimentStatus, 0)
if err := r.client.Status().Update(context.TODO(), cb); err != nil {
reqLogger.WithError(err).Errorln("update chaosblade phase to Initialized failed")
}
} else {
cb.SetFinalizers(append(cb.GetFinalizers(), chaosbladeFinalizer))
// Update CR
if err := r.client.Update(context.TODO(), cb); err != nil {
reqLogger.WithError(err).Errorln("add finalizer to chaosblade failed")
}
}
return forget, nil
}
// Initialized->Running/Error
// TODO When all the master nodes are inaccessible, there is the possibility of re-execution.
if cb.Status.Phase == v1alpha1.ClusterPhaseInitialized ||
cb.Status.Phase == v1alpha1.ClusterPhaseUpdating {
originalPhase := cb.Status.Phase
expStatusList := make([]v1alpha1.ExperimentStatus, 0)
var phase = v1alpha1.ClusterPhaseError
for _, exp := range cb.Spec.Experiments {
var experimentStatus = r.Executor.Create(cb.Name, exp)
if experimentStatus.Success {
phase = v1alpha1.ClusterPhaseRunning
}
expStatusList = append(expStatusList, experimentStatus)
}
cb.Status.ExpStatuses = expStatusList
cb.Status.Phase = phase
if err := r.client.Status().Update(context.TODO(), cb); err != nil {
reqLogger.WithError(err).Errorf("Important!!!!!update phase from %s to %s failed", originalPhase, phase)
}
return forget, nil
}
// Running/Error->Updating/Destroying
if cb.Status.Phase == v1alpha1.ClusterPhaseRunning ||
cb.Status.Phase == v1alpha1.ClusterPhaseError {
// Update CR, firstly destroy it and re-create the new CR
phase := v1alpha1.ClusterPhaseUpdating
originalPhase := cb.Status.Phase
logrus.Infof("update cb: %+v", *cb)
matchersString := cb.GetAnnotations()["preSpec"]
if matchersString != "" {
var oldSpec v1alpha1.ChaosBladeSpec
err := json.Unmarshal([]byte(matchersString), &oldSpec)
if err != nil {
reqLogger.WithError(err).Errorf("unmarshal old spec failed, %s", matchersString)
return forget, nil
}
// update annotation to cb
if err = r.client.Update(context.TODO(), cb); err != nil {
reqLogger.WithError(err).Errorln("add annotation to chaosblade failed")
}
if cb.Status.ExpStatuses != nil {
for idx, expStatus := range cb.Status.ExpStatuses {
var experimentStatus = r.Executor.Destroy(cb.Name, oldSpec.Experiments[idx], expStatus)
if !experimentStatus.Success {
phase = v1alpha1.ClusterPhaseDestroying
}
cb.Status.ExpStatuses[idx] = experimentStatus
}
}
cb.Status.Phase = phase
if err := r.client.Status().Update(context.TODO(), cb); err != nil {
reqLogger.WithError(err).Errorf("update phase from %s to %s failed", originalPhase, phase)
}
return forget, nil
}
reqLogger.Errorln("can not found matchers in annotations field")
}
return forget, nil
}
// finalizeChaosBlade
func (r *ReconcileChaosBlade) finalizeChaosBlade(reqLogger *logrus.Entry, cb *v1alpha1.ChaosBlade) error {
var phase = v1alpha1.ClusterPhaseDestroyed
reqLogger.Infoln("Finalize the chaosblade")
if cb.Status.ExpStatuses != nil &&
len(cb.Spec.Experiments) == len(cb.Status.ExpStatuses) {
for idx, exp := range cb.Spec.Experiments {
oldExpStatus := cb.Status.ExpStatuses[idx]
oldExpStatus = r.Executor.Destroy(cb.Name, exp, oldExpStatus)
if !oldExpStatus.Success {
phase = v1alpha1.ClusterPhaseDestroying
}
cb.Status.ExpStatuses[idx] = oldExpStatus
}
}
cb.Status.Phase = phase
err := r.client.Status().Update(context.TODO(), cb)
if err != nil {
return fmt.Errorf("update chaosblade status failed in finalize phase, %v", err)
}
if cb.Status.Phase == v1alpha1.ClusterPhaseDestroying {
return fmt.Errorf("failed to destory, please see the experiment status")
}
reqLogger.Info("Successfully finalized chaosblade")
return nil
}
func contains(list []string, s string) bool {
for _, v := range list {
if v == s {
return true
}
}
return false
}
func remove(list []string, s string) []string {
for i, v := range list {
if v == s {
list = append(list[:i], list[i+1:]...)
}
}
return list
}