airshipctl/pkg/cluster/clustermap/map.go
bijayasharma 6cacf4756f Minor fix on comment message (ClusterKubeconfigContext)
This commit fixes the minor comment message on pkg/cluster/clustermap/map.go
file and not related to any issue.

Change-Id: Ie92a7c09ada8b0983631cbcd0cd82622c068fc5b
2020-12-11 15:15:19 +00:00

132 lines
3.8 KiB
Go

/*
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
https://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 clustermap
import (
"opendev.org/airship/airshipctl/pkg/api/v1alpha1"
"opendev.org/airship/airshipctl/pkg/log"
)
// DefaultClusterAPIObjNamespace is a default namespace used for cluster-api cluster object
const DefaultClusterAPIObjNamespace = "default"
// ClusterMap interface that allows to list all clusters, find its parent, namespace,
// check if dynamic kubeconfig is enabled.
// TODO use typed cluster names
type ClusterMap interface {
ParentCluster(string) (string, error)
AllClusters() []string
DynamicKubeConfig(string) bool
ClusterNamespace(string) (string, error)
ClusterKubeconfigContext(string) (string, error)
ClusterAPIRef(string) (ClusterAPIRef, error)
}
// clusterMap allows to view clusters and relationship between them
type clusterMap struct {
apiMap *v1alpha1.ClusterMap
}
var _ ClusterMap = clusterMap{}
// NewClusterMap returns ClusterMap interface
func NewClusterMap(cMap *v1alpha1.ClusterMap) ClusterMap {
return clusterMap{apiMap: cMap}
}
// ParentCluster finds a parent cluster for provided child
func (cm clusterMap) ParentCluster(child string) (string, error) {
currentCluster, exists := cm.apiMap.Map[child]
if !exists {
return "", ErrClusterNotInMap{Child: child, Map: cm.apiMap}
}
if currentCluster.Parent == "" {
return "", ErrParentNotFound{Child: child, Map: cm.apiMap}
}
return currentCluster.Parent, nil
}
// DynamicKubeConfig check if dynamic kubeconfig is enabled for the child cluster
func (cm clusterMap) DynamicKubeConfig(child string) bool {
childCluster, exist := cm.apiMap.Map[child]
if !exist {
log.Debugf("cluster %s is not defined in cluster map %v", child, cm.apiMap)
return false
}
return childCluster.DynamicKubeConfig
}
// AllClusters returns all clusters in a map
func (cm clusterMap) AllClusters() []string {
clusters := []string{}
for k := range cm.apiMap.Map {
clusters = append(clusters, k)
}
return clusters
}
// ClusterAPIRef helps to find corresponding cluster-api Cluster object in kubernetes cluster
type ClusterAPIRef struct {
Name string
Namespace string
}
// ClusterAPIRef maps a clusterapi name and namespace for a given cluster
func (cm clusterMap) ClusterAPIRef(clusterName string) (ClusterAPIRef, error) {
clstr, ok := cm.apiMap.Map[clusterName]
if !ok {
return ClusterAPIRef{}, ErrClusterNotInMap{Child: clusterName, Map: cm.apiMap}
}
name := clstr.ClusterAPIRef.Name
namespace := clstr.ClusterAPIRef.Namespace
if name == "" {
name = clusterName
}
if namespace == "" {
namespace = DefaultClusterAPIObjNamespace
}
return ClusterAPIRef{
Name: name,
Namespace: namespace,
}, nil
}
// ClusterNamespace a namespace for given cluster
// TODO implement how to get namespace for cluster
func (cm clusterMap) ClusterNamespace(clusterName string) (string, error) {
return "default", nil
}
// ClusterKubeconfigContext returns name of the context in kubeconfig corresponding to a given cluster
func (cm clusterMap) ClusterKubeconfigContext(clusterName string) (string, error) {
cluster, exists := cm.apiMap.Map[clusterName]
if !exists {
return "", ErrClusterNotInMap{Map: cm.apiMap, Child: clusterName}
}
kubeContext := cluster.KubeconfigContext
// if kubeContext is still empty, set it to clusterName
if kubeContext == "" {
kubeContext = clusterName
}
return kubeContext, nil
}