Golang storage.Interface類代碼示例

func createThirdPartyObject(s storage.Interface, path, name string, obj interface{}) error {
	data, err := encodeToThirdParty(name, obj)
	if err != nil {
		return err
	}
	return s.Create(context.TODO(), etcdtest.AddPrefix(path), data, nil, 0)
}

// CreateObj will create a single object using the storage interface
func CreateObj(t *testing.T, helper storage.Interface, name string, obj, out runtime.Object, ttl uint64) error {
	err := helper.Set(context.TODO(), name, obj, out, ttl)
	if err != nil {
		t.Errorf("Unexpected error %v", err)
	}
	return err
}

// NewREST returns a RESTStorage object that will work against access tokens
func NewREST(s storage.Interface, backends ...storage.Interface) *REST {
	store := &etcdgeneric.Etcd{
		NewFunc:     func() runtime.Object { return &api.OAuthAccessToken{} },
		NewListFunc: func() runtime.Object { return &api.OAuthAccessTokenList{} },
		KeyRootFunc: func(ctx kapi.Context) string {
			return EtcdPrefix
		},
		KeyFunc: func(ctx kapi.Context, name string) (string, error) {
			return util.NoNamespaceKeyFunc(ctx, EtcdPrefix, name)
		},
		ObjectNameFunc: func(obj runtime.Object) (string, error) {
			return obj.(*api.OAuthAccessToken).Name, nil
		},
		PredicateFunc: func(label labels.Selector, field fields.Selector) generic.Matcher {
			return oauthaccesstoken.Matcher(label, field)
		},
		TTLFunc: func(obj runtime.Object, existing uint64, update bool) (uint64, error) {
			token := obj.(*api.OAuthAccessToken)
			expires := uint64(token.ExpiresIn)
			return expires, nil
		},

		EndpointName: "oauthaccesstokens",

		Storage: s,
	}

	store.CreateStrategy = oauthaccesstoken.Strategy

	if len(backends) > 0 {
		// Build identical stores that talk to a single etcd, so we can verify the token is distributed after creation
		watchers := []rest.Watcher{}
		for i := range backends {
			watcher := *store
			watcher.Storage = backends[i]
			watchers = append(watchers, &watcher)
		}
		// Observe the cluster for the particular resource version, requiring at least one backend to succeed
		observer := observe.NewClusterObserver(s.Versioner(), watchers, 1)
		// After creation, wait for the new token to propagate
		store.AfterCreate = func(obj runtime.Object) error {
			return observer.ObserveResourceVersion(obj.(*api.OAuthAccessToken).ResourceVersion, 5*time.Second)
		}
	}

	return &REST{store}
}

func updatePod(t *testing.T, s storage.Interface, obj, old *api.Pod) *api.Pod {
	key := etcdtest.AddPrefix("pods/ns/" + obj.Name)
	result := &api.Pod{}
	if old == nil {
		if err := s.Create(context.TODO(), key, obj, result, 0); err != nil {
			t.Errorf("unexpected error: %v", err)
		}
	} else {
		// To force "update" behavior of Set() we need to set ResourceVersion of
		// previous version of object.
		obj.ResourceVersion = old.ResourceVersion
		if err := s.Set(context.TODO(), key, obj, result, 0); err != nil {
			t.Errorf("unexpected error: %v", err)
		}
		obj.ResourceVersion = ""
	}
	return result
}

func updatePod(t *testing.T, s storage.Interface, obj, old *api.Pod) *api.Pod {
	updateFn := func(input runtime.Object, res storage.ResponseMeta) (runtime.Object, *uint64, error) {
		newObj, err := api.Scheme.DeepCopy(obj)
		if err != nil {
			t.Errorf("unexpected error: %v", err)
			return nil, nil, err
		}
		return newObj.(*api.Pod), nil, nil
	}
	key := etcdtest.AddPrefix("pods/ns/" + obj.Name)
	if err := s.GuaranteedUpdate(context.TODO(), key, &api.Pod{}, old == nil, nil, updateFn); err != nil {
		t.Errorf("unexpected error: %v", err)
	}
	obj.ResourceVersion = ""
	result := &api.Pod{}
	if err := s.Get(context.TODO(), key, result, false); err != nil {
		t.Errorf("unexpected error: %v", err)
	}
	return result
}

// CreateObj will create a single object using the storage interface
func CreateObj(helper storage.Interface, name string, obj, out runtime.Object, ttl uint64) error {
	return helper.Set(context.TODO(), name, obj, out, ttl)
}