add federated resource api (#2725)

Signed-off-by: Jeff <zw0948@gmail.com>

pkg/models/resources/v1alpha3/federatedapplication/federatedapplications.go

@@ -0,0 +1,92 @@
+/*
+Copyright 2019 The KubeSphere Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package federatedapplication
+
+import (
+	"k8s.io/apimachinery/pkg/runtime"
+	"kubesphere.io/kubesphere/pkg/api"
+	"kubesphere.io/kubesphere/pkg/apis/types/v1beta1"
+	"kubesphere.io/kubesphere/pkg/apiserver/query"
+	informers "kubesphere.io/kubesphere/pkg/client/informers/externalversions"
+	"kubesphere.io/kubesphere/pkg/models/resources/v1alpha3"
+)
+
+type fedApplicationsGetter struct {
+	informer informers.SharedInformerFactory
+}
+
+func New(sharedInformers informers.SharedInformerFactory) v1alpha3.Interface {
+	return &fedApplicationsGetter{informer: sharedInformers}
+}
+
+func (d *fedApplicationsGetter) Get(namespace, name string) (runtime.Object, error) {
+	return d.informer.Types().V1beta1().FederatedApplications().Lister().FederatedApplications(namespace).Get(name)
+}
+
+func (d *fedApplicationsGetter) List(namespace string, query *query.Query) (*api.ListResult, error) {
+	applications, err := d.informer.Types().V1beta1().FederatedApplications().Lister().FederatedApplications(namespace).List(query.Selector())
+	if err != nil {
+		return nil, err
+	}
+
+	var result []runtime.Object
+	for _, app := range applications {
+		result = append(result, app)
+	}
+
+	return v1alpha3.DefaultList(result, query, d.compare, d.filter), nil
+}
+
+func (d *fedApplicationsGetter) compare(left runtime.Object, right runtime.Object, field query.Field) bool {
+
+	leftApplication, ok := left.(*v1beta1.FederatedApplication)
+	if !ok {
+		return false
+	}
+
+	rightApplication, ok := right.(*v1beta1.FederatedApplication)
+	if !ok {
+		return false
+	}
+	switch field {
+	case query.FieldUpdateTime:
+		fallthrough
+	case query.FieldLastUpdateTimestamp:
+		return lastUpdateTime(leftApplication) > (lastUpdateTime(rightApplication))
+	default:
+		return v1alpha3.DefaultObjectMetaCompare(leftApplication.ObjectMeta, rightApplication.ObjectMeta, field)
+	}
+}
+
+func (d *fedApplicationsGetter) filter(object runtime.Object, filter query.Filter) bool {
+	application, ok := object.(*v1beta1.FederatedApplication)
+	if !ok {
+		return false
+	}
+
+	return v1alpha3.DefaultObjectMetaFilter(application.ObjectMeta, filter)
+}
+
+func lastUpdateTime(application *v1beta1.FederatedApplication) string {
+	lut := application.CreationTimestamp.Time.String()
+	for _, condition := range application.Status.Conditions {
+		if condition.LastUpdateTime > lut {
+			lut = condition.LastUpdateTime
+		}
+	}
+	return lut
+}