/
reconciler.go
159 lines (129 loc) · 4.12 KB
/
reconciler.go
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package trigger
import (
"context"
"encoding/json"
"fmt"
"reflect"
"github.com/go-logr/logr"
"github.com/google/wire"
"github.com/tommy351/pullup/internal/controller"
"github.com/tommy351/pullup/pkg/apis/pullup/v1beta1"
extv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
"k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/types"
"k8s.io/client-go/tools/record"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/manager"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
)
// +kubebuilder:rbac:groups=pullup.dev,resources=resourcetemplates,verbs=get;list;watch;patch
// +kubebuilder:rbac:groups=pullup.dev,resources=triggers,verbs=get;list;watch
const (
ReasonPatched = "Patched"
ReasonPatchFailed = "PatchFailed"
)
const triggerRefField = "spec.triggerRef"
// ReconcilerConfigSet provides a ReconcilerConfig.
// nolint: gochecknoglobals
var ReconcilerConfigSet = wire.NewSet(
wire.Struct(new(ReconcilerConfig), "*"),
)
// ReconcilerSet provides a Reconciler.
// nolint: gochecknoglobals
var ReconcilerSet = wire.NewSet(
ReconcilerConfigSet,
NewReconciler,
)
type ReconcilerConfig struct {
Client client.Client
Recorder record.EventRecorder
}
type Reconciler struct {
ReconcilerConfig
}
func NewReconciler(conf ReconcilerConfig, mgr manager.Manager) (*Reconciler, error) {
err := mgr.GetFieldIndexer().IndexField(context.Background(), &v1beta1.ResourceTemplate{}, triggerRefField, func(obj client.Object) []string {
var result []string
if ref := obj.(*v1beta1.ResourceTemplate).Spec.TriggerRef; ref != nil {
result = append(result, ref.String())
}
return result
})
if err != nil {
return nil, fmt.Errorf("failed to build ResourceTemplate index: %w", err)
}
return &Reconciler{
ReconcilerConfig: conf,
}, nil
}
func (r *Reconciler) Reconcile(ctx context.Context, req reconcile.Request) (reconcile.Result, error) {
trigger := new(v1beta1.Trigger)
if err := r.Client.Get(ctx, req.NamespacedName, trigger); err != nil {
if errors.IsNotFound(err) {
return reconcile.Result{}, nil
}
return reconcile.Result{}, fmt.Errorf("failed to get Trigger: %w", err)
}
logger := logr.FromContextOrDiscard(ctx)
list := new(v1beta1.ResourceTemplateList)
ref := &v1beta1.ObjectReference{
APIVersion: trigger.APIVersion,
Kind: trigger.Kind,
Namespace: trigger.Namespace,
Name: trigger.Name,
}
err := r.Client.List(ctx, list, client.InNamespace(trigger.Namespace), client.MatchingFields(map[string]string{
triggerRefField: ref.String(),
}))
if err != nil {
return reconcile.Result{Requeue: true}, fmt.Errorf("failed to list ResourceTemplate: %w", err)
}
for _, rt := range list.Items {
rt := rt
if reflect.DeepEqual(trigger.Spec.Patches, rt.Spec.Patches) {
logger.Info("Skipped because patches are not changed")
continue
}
result := r.patchResource(ctx, trigger, &rt)
result.RecordEvent(r.Recorder, trigger)
if err := result.Error; err != nil {
logger.Error(err, result.GetMessage())
return reconcile.Result{Requeue: result.Requeue}, err
}
logger.Info(result.GetMessage())
}
return reconcile.Result{}, nil
}
func (r *Reconciler) patchResource(ctx context.Context, trigger *v1beta1.Trigger, rt *v1beta1.ResourceTemplate) controller.Result {
patchesBuf, err := json.Marshal(trigger.Spec.Patches)
if err != nil {
return controller.Result{
Error: fmt.Errorf("failed to marshal patches: %w", err),
Reason: ReasonPatchFailed,
}
}
patch, err := json.Marshal([]v1beta1.JSONPatch{
{
Operation: v1beta1.JSONPatchOpReplace,
Path: "/spec/patches",
Value: &extv1.JSON{Raw: patchesBuf},
},
})
if err != nil {
return controller.Result{
Error: fmt.Errorf("failed to marshal json patch: %w", err),
Reason: ReasonPatchFailed,
}
}
if err := r.Client.Patch(ctx, rt, client.RawPatch(types.JSONPatchType, patch)); err != nil {
return controller.Result{
Error: fmt.Errorf("failed to patch resource template: %w", err),
Reason: ReasonPatchFailed,
Requeue: true,
}
}
return controller.Result{
Message: fmt.Sprintf("Patched resource template: %s", rt.Name),
Reason: ReasonPatched,
}
}