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-rw-r--r--src/k8splugin/internal/app/query.go108
1 files changed, 108 insertions, 0 deletions
diff --git a/src/k8splugin/internal/app/query.go b/src/k8splugin/internal/app/query.go
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+++ b/src/k8splugin/internal/app/query.go
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+/*
+ * Copyright 2018 Intel Corporation, Inc
+ * Copyright © 2021 Samsung Electronics
+ * Copyright © 2021 Orange
+ *
+ * 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 app
+
+import (
+ "github.com/onap/multicloud-k8s/src/k8splugin/internal/helm"
+ "k8s.io/apimachinery/pkg/runtime/schema"
+
+ pkgerrors "github.com/pkg/errors"
+)
+
+// QueryStatus is what is returned when status is queried for an instance
+type QueryStatus struct {
+ ResourceCount int32 `json:"resourceCount"`
+ ResourcesStatus []ResourceStatus `json:"resourcesStatus"`
+}
+
+// QueryManager is an interface exposes the instantiation functionality
+type QueryManager interface {
+ Query(namespace, cloudRegion, apiVersion, kind, name, labels, id string) (QueryStatus, error)
+}
+
+// QueryClient implements the InstanceManager interface
+// It will also be used to maintain some localized state
+type QueryClient struct {
+ storeName string
+ tagInst string
+}
+
+// NewQueryClient returns an instance of the QueryClient
+// which implements the InstanceManager
+func NewQueryClient() *QueryClient {
+ return &QueryClient{
+ storeName: "rbdef",
+ tagInst: "instance",
+ }
+}
+
+// Query returns state of instance's filtered resources
+func (v *QueryClient) Query(namespace, cloudRegion, apiVersion, kind, name, labels, id string) (QueryStatus, error) {
+
+ //Read the status from the DD
+
+ k8sClient := KubernetesClient{}
+ err := k8sClient.Init(cloudRegion, id)
+ if err != nil {
+ return QueryStatus{}, pkgerrors.Wrap(err, "Getting CloudRegion Information")
+ }
+
+ var resourcesStatus []ResourceStatus
+ if labels != "" {
+ resList, err := k8sClient.queryResources(apiVersion, kind, labels, namespace)
+ if err != nil {
+ return QueryStatus{}, pkgerrors.Wrap(err, "Querying Resources")
+ }
+ // If user specifies both label and name, we want to pick up only single resource from these matching label
+ if name != "" {
+ //Assigning 0-length, because we may actually not find matching name
+ resourcesStatus = make([]ResourceStatus, 0)
+ for _, res := range resList {
+ if res.Name == name {
+ resourcesStatus = append(resourcesStatus, res)
+ break
+ }
+ }
+ } else {
+ resourcesStatus = resList
+ }
+ } else if name != "" {
+ resIdentifier := helm.KubernetesResource{
+ Name: name,
+ GVK: schema.FromAPIVersionAndKind(apiVersion, kind),
+ }
+ res, err := k8sClient.GetResourceStatus(resIdentifier, namespace)
+ if err != nil {
+ return QueryStatus{}, pkgerrors.Wrap(err, "Querying Resource")
+ }
+ resourcesStatus = []ResourceStatus{res}
+ } else {
+ resList, err := k8sClient.queryResources(apiVersion, kind, labels, namespace)
+ if err != nil {
+ return QueryStatus{}, pkgerrors.Wrap(err, "Querying Resources")
+ }
+ resourcesStatus = resList
+ }
+
+ resp := QueryStatus{
+ ResourceCount: int32(len(resourcesStatus)),
+ ResourcesStatus: resourcesStatus,
+ }
+ return resp, nil
+}