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cluster.go
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cluster.go
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/*
* Tencent is pleased to support the open source community by making TKEStack
* available.
*
* Copyright (C) 2012-2021 Tencent. All Rights Reserved.
*
* 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://opensource.org/licenses/Apache-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 OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*
*/
package util
import (
"context"
"sync"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes"
platformversionedclient "tkestack.io/tke/api/client/clientset/versioned/typed/platform/v1"
"tkestack.io/tke/pkg/platform/util"
)
const (
// ProjectDatabaseName defines database name for project metrics
ProjectDatabaseName = "projects"
)
// ClusterNameToClient mapping cluster to kubernetes client
// clusterName => kubernetes.Interface
var ClusterNameToClient sync.Map
// ClusterNameToMonitor mapping cluster to monitoring client
// clusterName => monitoringclient.Clientset
var ClusterNameToMonitor sync.Map
// GetClusterClient get kubernetes client via cluster name
func GetClusterClient(ctx context.Context, clusterName string, platformClient platformversionedclient.PlatformV1Interface) (kubernetes.Interface, error) {
// First check from cache
if item, ok := ClusterNameToClient.Load(clusterName); ok {
// Check if is available
kubeClient := item.(kubernetes.Interface)
_, err := kubeClient.CoreV1().Services(metav1.NamespaceSystem).List(ctx, metav1.ListOptions{})
if err == nil {
return kubeClient, nil
}
ClusterNameToClient.Delete(clusterName)
}
kubeClient, err := util.BuildExternalClientSetWithName(ctx, platformClient, clusterName)
if err != nil {
return nil, err
}
ClusterNameToClient.Store(clusterName, kubeClient)
return kubeClient, nil
}