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workflowstepdefinition_controller.go
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/
workflowstepdefinition_controller.go
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/*
Copyright 2021 The KubeVela 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 workflowstepdefinition
import (
"context"
"fmt"
"github.com/crossplane/crossplane-runtime/pkg/event"
apierrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/client-go/util/retry"
"k8s.io/klog/v2"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller"
"github.com/oam-dev/kubevela/apis/core.oam.dev/common"
"github.com/oam-dev/kubevela/apis/core.oam.dev/condition"
"github.com/oam-dev/kubevela/apis/core.oam.dev/v1beta1"
common2 "github.com/oam-dev/kubevela/pkg/controller/common"
oamctrl "github.com/oam-dev/kubevela/pkg/controller/core.oam.dev"
coredef "github.com/oam-dev/kubevela/pkg/controller/core.oam.dev/v1alpha2/core"
"github.com/oam-dev/kubevela/pkg/controller/utils"
"github.com/oam-dev/kubevela/pkg/cue/packages"
"github.com/oam-dev/kubevela/pkg/oam"
"github.com/oam-dev/kubevela/pkg/oam/discoverymapper"
"github.com/oam-dev/kubevela/pkg/oam/util"
)
// Reconciler reconciles a WorkflowStepDefinition object
type Reconciler struct {
client.Client
dm discoverymapper.DiscoveryMapper
pd *packages.PackageDiscover
Scheme *runtime.Scheme
record event.Recorder
defRevLimit int
concurrentReconciles int
}
// Reconcile is the main logic for WorkflowStepDefinition controller
func (r *Reconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
ctx, cancel := common2.NewReconcileContext(ctx)
defer cancel()
definitionName := req.NamespacedName.Name
klog.InfoS("Reconciling WorkflowStepDefinition...", "Name", definitionName, "Namespace", req.Namespace)
var wfstepdefinition v1beta1.WorkflowStepDefinition
if err := r.Get(ctx, req.NamespacedName, &wfstepdefinition); err != nil {
return ctrl.Result{}, client.IgnoreNotFound(err)
}
// this is a placeholder for finalizer here in the future
if wfstepdefinition.DeletionTimestamp != nil {
return ctrl.Result{}, nil
}
// refresh package discover when WorkflowStepDefinition is registered
if wfstepdefinition.Spec.Reference.Name != "" {
err := utils.RefreshPackageDiscover(ctx, r.Client, r.dm, r.pd, &wfstepdefinition)
if err != nil {
klog.ErrorS(err, "cannot refresh packageDiscover")
r.record.Event(&wfstepdefinition, event.Warning("cannot refresh packageDiscover", err))
return ctrl.Result{}, util.EndReconcileWithNegativeCondition(ctx, r, &wfstepdefinition,
condition.ReconcileError(fmt.Errorf(util.ErrRefreshPackageDiscover, err)))
}
}
// generate DefinitionRevision from WorkflowStepDefinition
defRev, isNewRevision, err := coredef.GenerateDefinitionRevision(ctx, r.Client, &wfstepdefinition)
if err != nil {
klog.ErrorS(err, "cannot generate DefinitionRevision", "WorkflowStepDefinitionName", wfstepdefinition.Name)
r.record.Event(&wfstepdefinition, event.Warning("cannot generate DefinitionRevision", err))
return ctrl.Result{}, util.PatchCondition(ctx, r, &wfstepdefinition,
condition.ReconcileError(fmt.Errorf(util.ErrGenerateDefinitionRevision, wfstepdefinition.Name, err)))
}
if isNewRevision {
if err = r.createWFStepDefRevision(ctx, &wfstepdefinition, defRev); err != nil {
klog.ErrorS(err, "cannot create DefinitionRevision")
r.record.Event(&(wfstepdefinition), event.Warning("cannot create DefinitionRevision", err))
return ctrl.Result{}, util.PatchCondition(ctx, r, &(wfstepdefinition),
condition.ReconcileError(fmt.Errorf(util.ErrCreateDefinitionRevision, defRev.Name, err)))
}
klog.InfoS("Successfully created WFStepDefRevision", "name", defRev.Name)
wfstepdefinition.Status.LatestRevision = &common.Revision{
Name: defRev.Name,
Revision: defRev.Spec.Revision,
RevisionHash: defRev.Spec.RevisionHash,
}
if err := r.UpdateStatus(ctx, &wfstepdefinition); err != nil {
klog.ErrorS(err, "cannot update WorkflowStepDefinition Status")
r.record.Event(&(wfstepdefinition), event.Warning("cannot update WorkflowStepDefinition Status", err))
return ctrl.Result{}, util.PatchCondition(ctx, r, &(wfstepdefinition),
condition.ReconcileError(fmt.Errorf(util.ErrUpdateWorkflowStepDefinition, wfstepdefinition.Name, err)))
}
klog.InfoS("Successfully updated the status.latestRevision of the WorkflowStepDefinition", "WorkflowStepDefinition", klog.KRef(req.Namespace, req.Name),
"Name", defRev.Name, "Revision", defRev.Spec.Revision, "RevisionHash", defRev.Spec.RevisionHash)
}
if err := coredef.CleanUpDefinitionRevision(ctx, r.Client, &wfstepdefinition, r.defRevLimit); err != nil {
klog.Error("[Garbage collection]")
r.record.Event(&wfstepdefinition, event.Warning("failed to garbage collect DefinitionRevision of type WorkflowStepDefinition", err))
}
return ctrl.Result{}, nil
}
func (r *Reconciler) createWFStepDefRevision(ctx context.Context, def *v1beta1.WorkflowStepDefinition, defRev *v1beta1.DefinitionRevision) error {
namespace := def.GetNamespace()
defRev.SetLabels(def.GetLabels())
defRev.SetLabels(util.MergeMapOverrideWithDst(defRev.Labels,
map[string]string{oam.LabelWorkflowStepDefinitionName: def.Name}))
defRev.SetNamespace(namespace)
rev := &v1beta1.DefinitionRevision{}
err := r.Client.Get(ctx, client.ObjectKey{Namespace: namespace, Name: defRev.Name}, rev)
if apierrors.IsNotFound(err) {
err = r.Create(ctx, defRev)
if apierrors.IsAlreadyExists(err) {
return nil
}
}
return err
}
// UpdateStatus updates v1beta1.WorkflowStepDefinition's Status with retry.RetryOnConflict
func (r *Reconciler) UpdateStatus(ctx context.Context, def *v1beta1.WorkflowStepDefinition, opts ...client.UpdateOption) error {
status := def.DeepCopy().Status
return retry.RetryOnConflict(retry.DefaultBackoff, func() (err error) {
if err = r.Get(ctx, client.ObjectKey{Namespace: def.Namespace, Name: def.Name}, def); err != nil {
return
}
def.Status = status
return r.Status().Update(ctx, def, opts...)
})
}
// SetupWithManager will setup with event recorder
func (r *Reconciler) SetupWithManager(mgr ctrl.Manager) error {
r.record = event.NewAPIRecorder(mgr.GetEventRecorderFor("WorkflowStepDefinition")).
WithAnnotations("controller", "WorkflowStepDefinition")
return ctrl.NewControllerManagedBy(mgr).
WithOptions(controller.Options{
MaxConcurrentReconciles: r.concurrentReconciles,
}).
For(&v1beta1.WorkflowStepDefinition{}).
Complete(r)
}
// Setup adds a controller that reconciles WorkflowStepDefinition.
func Setup(mgr ctrl.Manager, args oamctrl.Args) error {
r := Reconciler{
Client: mgr.GetClient(),
Scheme: mgr.GetScheme(),
dm: args.DiscoveryMapper,
pd: args.PackageDiscover,
defRevLimit: args.DefRevisionLimit,
}
return r.SetupWithManager(mgr)
}