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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 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 string) (QueryStatus, error) {
//Read the status from the DD
k8sClient := KubernetesClient{}
err := k8sClient.Init(cloudRegion, "dummy") //we don't care about instance id in this request
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
}
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