/
tenant.go
65 lines (56 loc) · 1.94 KB
/
tenant.go
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package k8s
import (
"context"
api "github.com/SAP/stewardci-core/pkg/apis/steward/v1alpha1"
stewardLister "github.com/SAP/stewardci-core/pkg/client/listers/steward/v1alpha1"
k8serrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/tools/cache"
)
// TenantFetcher has methods to fetch tenants from Kubernetes
type TenantFetcher interface {
// ByKey fetches Tenant resource from Kubernetes.
// key has to be "<namespace>/<name>"
// Return nil,nil if tenant with key does not exist
ByKey(ctx context.Context, key string) (*api.Tenant, error)
}
type clientBasedTenantFetcher struct {
factory ClientFactory
}
//NewClientBasedTenantFetcher returns an operative implementation of TenantFetcher
func NewClientBasedTenantFetcher(factory ClientFactory) TenantFetcher {
return &clientBasedTenantFetcher{factory: factory}
}
// ByKey implements interface TenantFetcher
func (tf *clientBasedTenantFetcher) ByKey(ctx context.Context, key string) (*api.Tenant, error) {
namespace, name, err := cache.SplitMetaNamespaceKey(key)
if err != nil {
return nil, err
}
client := tf.factory.StewardV1alpha1().Tenants(namespace)
t, err := client.Get(ctx, name, metav1.GetOptions{})
if k8serrors.IsNotFound(err) {
return nil, nil
}
return t, err
}
type listerBasedTenantFetcher struct {
lister stewardLister.TenantLister
}
// NewListerBasedTenantFetcher creates a new lister based tenant fetcher
func NewListerBasedTenantFetcher(lister stewardLister.TenantLister) TenantFetcher {
return &listerBasedTenantFetcher{lister: lister}
}
// ByKey implements interface TenantFetcher
func (l *listerBasedTenantFetcher) ByKey(ctx context.Context, key string) (*api.Tenant, error) {
namespace, name, err := cache.SplitMetaNamespaceKey(key)
if err != nil {
return nil, err
}
lister := l.lister.Tenants(namespace)
tenant, err := lister.Get(name)
if k8serrors.IsNotFound(err) {
return nil, nil
}
return tenant, err
}