Ejemplo n.º 1
0
// DeleteResource returns a function that will handle a resource deletion
func DeleteResource(r rest.GracefulDeleter, checkBody bool, scope RequestScope, admit admission.Interface) restful.RouteFunction {
	return func(req *restful.Request, res *restful.Response) {
		w := res.ResponseWriter

		// TODO: we either want to remove timeout or document it (if we document, move timeout out of this function and declare it in api_installer)
		timeout := parseTimeout(req.Request.URL.Query().Get("timeout"))

		namespace, name, err := scope.Namer.Name(req)
		if err != nil {
			errorJSON(err, scope.Codec, w)
			return
		}
		ctx := scope.ContextFunc(req)
		ctx = api.WithNamespace(ctx, namespace)

		options := &api.DeleteOptions{}
		if checkBody {
			body, err := readBody(req.Request)
			if err != nil {
				errorJSON(err, scope.Codec, w)
				return
			}
			if len(body) > 0 {
				if err := scope.Codec.DecodeInto(body, options); err != nil {
					errorJSON(err, scope.Codec, w)
					return
				}
			}
		}

		if admit != nil && admit.Handles(admission.Delete) {
			userInfo, _ := api.UserFrom(ctx)

			err = admit.Admit(admission.NewAttributesRecord(nil, scope.Kind, namespace, name, scope.Resource, scope.Subresource, admission.Delete, userInfo))
			if err != nil {
				errorJSON(err, scope.Codec, w)
				return
			}
		}

		result, err := finishRequest(timeout, func() (runtime.Object, error) {
			return r.Delete(ctx, name, options)
		})
		if err != nil {
			errorJSON(err, scope.Codec, w)
			return
		}

		// if the rest.Deleter returns a nil object, fill out a status. Callers may return a valid
		// object with the response.
		if result == nil {
			result = &unversioned.Status{
				Status: unversioned.StatusSuccess,
				Code:   http.StatusOK,
				Details: &unversioned.StatusDetails{
					Name: name,
					Kind: scope.Kind,
				},
			}
		} else {
			// when a non-status response is returned, set the self link
			if _, ok := result.(*unversioned.Status); !ok {
				if err := setSelfLink(result, req, scope.Namer); err != nil {
					errorJSON(err, scope.Codec, w)
					return
				}
			}
		}
		write(http.StatusOK, scope.APIVersion, scope.Codec, result, w, req.Request)
	}
}
Ejemplo n.º 2
0
// DeleteResource returns a function that will handle a resource deletion
func DeleteResource(r rest.GracefulDeleter, checkBody bool, scope RequestScope, admit admission.Interface) restful.RouteFunction {
	return func(req *restful.Request, res *restful.Response) {
		// For performance tracking purposes.
		trace := util.NewTrace("Delete " + req.Request.URL.Path)
		defer trace.LogIfLong(250 * time.Millisecond)

		w := res.ResponseWriter

		// TODO: we either want to remove timeout or document it (if we document, move timeout out of this function and declare it in api_installer)
		timeout := parseTimeout(req.Request.URL.Query().Get("timeout"))

		namespace, name, err := scope.Namer.Name(req)
		if err != nil {
			scope.err(err, res.ResponseWriter, req.Request)
			return
		}
		ctx := scope.ContextFunc(req)
		ctx = api.WithNamespace(ctx, namespace)

		options := &api.DeleteOptions{}
		if checkBody {
			body, err := readBody(req.Request)
			if err != nil {
				scope.err(err, res.ResponseWriter, req.Request)
				return
			}
			if len(body) > 0 {
				s, err := negotiateInputSerializer(req.Request, scope.Serializer)
				if err != nil {
					scope.err(err, res.ResponseWriter, req.Request)
					return
				}
				defaultGVK := scope.Kind.GroupVersion().WithKind("DeleteOptions")
				obj, _, err := scope.Serializer.DecoderToVersion(s, defaultGVK.GroupVersion()).Decode(body, &defaultGVK, options)
				if err != nil {
					scope.err(err, res.ResponseWriter, req.Request)
					return
				}
				if obj != options {
					scope.err(fmt.Errorf("decoded object cannot be converted to DeleteOptions"), res.ResponseWriter, req.Request)
					return
				}
			}
		}

		if admit != nil && admit.Handles(admission.Delete) {
			userInfo, _ := api.UserFrom(ctx)

			err = admit.Admit(admission.NewAttributesRecord(nil, scope.Kind, namespace, name, scope.Resource, scope.Subresource, admission.Delete, userInfo))
			if err != nil {
				scope.err(err, res.ResponseWriter, req.Request)
				return
			}
		}

		trace.Step("About do delete object from database")
		result, err := finishRequest(timeout, func() (runtime.Object, error) {
			return r.Delete(ctx, name, options)
		})
		if err != nil {
			scope.err(err, res.ResponseWriter, req.Request)
			return
		}
		trace.Step("Object deleted from database")

		// if the rest.Deleter returns a nil object, fill out a status. Callers may return a valid
		// object with the response.
		if result == nil {
			result = &unversioned.Status{
				Status: unversioned.StatusSuccess,
				Code:   http.StatusOK,
				Details: &unversioned.StatusDetails{
					Name: name,
					Kind: scope.Kind.Kind,
				},
			}
		} else {
			// when a non-status response is returned, set the self link
			if _, ok := result.(*unversioned.Status); !ok {
				if err := setSelfLink(result, req, scope.Namer); err != nil {
					scope.err(err, res.ResponseWriter, req.Request)
					return
				}
			}
		}
		write(http.StatusOK, scope.Kind.GroupVersion(), scope.Serializer, result, w, req.Request)
	}
}