forked from kyma-project/kyma
/
servicebindingusage_service.go
157 lines (126 loc) · 4.92 KB
/
servicebindingusage_service.go
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package servicecatalogaddons
import (
"fmt"
"strings"
"github.com/kyma-project/kyma/components/console-backend-service/internal/domain/shared"
"github.com/kyma-project/kyma/components/console-backend-service/pkg/resource"
api "github.com/kyma-project/kyma/components/service-binding-usage-controller/pkg/apis/servicecatalog/v1alpha1"
"github.com/kyma-project/kyma/components/service-binding-usage-controller/pkg/client/clientset/versioned/typed/servicecatalog/v1alpha1"
"github.com/pkg/errors"
v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/tools/cache"
)
type notifier interface {
AddListener(observer resource.Listener)
DeleteListener(observer resource.Listener)
}
type serviceBindingUsageService struct {
client v1alpha1.ServicecatalogV1alpha1Interface
informer cache.SharedIndexInformer
scRetriever shared.ServiceCatalogRetriever
notifier notifier
nameFunc func() string
}
func newServiceBindingUsageService(client v1alpha1.ServicecatalogV1alpha1Interface, informer cache.SharedIndexInformer, scRetriever shared.ServiceCatalogRetriever, nameFunc func() string) (*serviceBindingUsageService, error) {
svc := &serviceBindingUsageService{
client: client,
informer: informer,
scRetriever: scRetriever,
nameFunc: nameFunc,
}
err := informer.AddIndexers(cache.Indexers{
"usedBy": func(obj interface{}) ([]string, error) {
serviceBindingUsage, err := svc.toServiceBindingUsage(obj)
if err != nil {
return nil, errors.New("while indexing by `usedBy`")
}
key := fmt.Sprintf("%s/%s/%s", serviceBindingUsage.Namespace, strings.ToLower(serviceBindingUsage.Spec.UsedBy.Kind), serviceBindingUsage.Spec.UsedBy.Name)
return []string{key}, nil
},
})
if err != nil {
return nil, errors.Wrap(err, "while adding indexers")
}
notifier := resource.NewNotifier()
informer.AddEventHandler(notifier)
svc.notifier = notifier
return svc, nil
}
func (f *serviceBindingUsageService) Create(namespace string, sb *api.ServiceBindingUsage) (*api.ServiceBindingUsage, error) {
if sb.Name == "" {
sb.Name = f.nameFunc()
}
return f.client.ServiceBindingUsages(namespace).Create(sb)
}
func (f *serviceBindingUsageService) Delete(namespace string, name string) error {
return f.client.ServiceBindingUsages(namespace).Delete(name, &v1.DeleteOptions{})
}
func (f *serviceBindingUsageService) Find(namespace string, name string) (*api.ServiceBindingUsage, error) {
key := fmt.Sprintf("%s/%s", namespace, name)
item, exists, err := f.informer.GetStore().GetByKey(key)
if err != nil || !exists {
return nil, err
}
return f.toServiceBindingUsage(item)
}
func (f *serviceBindingUsageService) List(namespace string) ([]*api.ServiceBindingUsage, error) {
items, err := f.informer.GetIndexer().ByIndex("namespace", namespace)
if err != nil {
return nil, err
}
return f.toServiceBindingUsages(items)
}
func (f *serviceBindingUsageService) ListForServiceInstance(namespace string, instanceName string) ([]*api.ServiceBindingUsage, error) {
bindings, err := f.scRetriever.ServiceBinding().ListForServiceInstance(namespace, instanceName)
if err != nil {
return nil, errors.Wrapf(err, "while getting ServiceBindings for instance [namespace: %s, name: %s]", namespace, instanceName)
}
bindingNames := make(map[string]struct{})
for _, binding := range bindings {
bindingNames[binding.Name] = struct{}{}
}
usages, err := f.List(namespace)
if err != nil {
return nil, errors.Wrapf(err, "while getting all ServiceBindingUsages from namespace: %s", namespace)
}
filteredUsages := make([]*api.ServiceBindingUsage, 0)
for _, usage := range usages {
if _, ex := bindingNames[usage.Spec.ServiceBindingRef.Name]; ex {
filteredUsages = append(filteredUsages, usage)
}
}
return filteredUsages, nil
}
func (f *serviceBindingUsageService) ListForDeployment(namespace, kind, deploymentName string) ([]*api.ServiceBindingUsage, error) {
key := fmt.Sprintf("%s/%s/%s", namespace, strings.ToLower(kind), deploymentName)
indexer := f.informer.GetIndexer()
items, err := indexer.ByIndex("usedBy", key)
if err != nil {
return nil, err
}
return f.toServiceBindingUsages(items)
}
func (f *serviceBindingUsageService) Subscribe(listener resource.Listener) {
f.notifier.AddListener(listener)
}
func (f *serviceBindingUsageService) Unsubscribe(listener resource.Listener) {
f.notifier.DeleteListener(listener)
}
func (f *serviceBindingUsageService) toServiceBindingUsages(items []interface{}) ([]*api.ServiceBindingUsage, error) {
var usages []*api.ServiceBindingUsage
for _, item := range items {
usage, err := f.toServiceBindingUsage(item)
if err != nil {
return nil, err
}
usages = append(usages, usage)
}
return usages, nil
}
func (f *serviceBindingUsageService) toServiceBindingUsage(item interface{}) (*api.ServiceBindingUsage, error) {
usage, ok := item.(*api.ServiceBindingUsage)
if !ok {
return nil, fmt.Errorf("incorrect item type: %T, should be: *ServiceBindingUsage", item)
}
return usage, nil
}