sigs.k8s.io/cluster-api@v1.6.3/cmd/clusterctl/client/cluster/workload_cluster.go (about)

     1  /*
     2  Copyright 2020 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package cluster
    18  
    19  import (
    20  	"context"
    21  
    22  	"github.com/pkg/errors"
    23  	"sigs.k8s.io/controller-runtime/pkg/client"
    24  
    25  	utilkubeconfig "sigs.k8s.io/cluster-api/util/kubeconfig"
    26  )
    27  
    28  // WorkloadCluster has methods for fetching kubeconfig of workload cluster from management cluster.
    29  type WorkloadCluster interface {
    30  	// GetKubeconfig returns the kubeconfig of the workload cluster.
    31  	GetKubeconfig(ctx context.Context, workloadClusterName string, namespace string) (string, error)
    32  }
    33  
    34  // workloadCluster implements WorkloadCluster.
    35  type workloadCluster struct {
    36  	proxy Proxy
    37  }
    38  
    39  // newWorkloadCluster returns a workloadCluster.
    40  func newWorkloadCluster(proxy Proxy) *workloadCluster {
    41  	return &workloadCluster{
    42  		proxy: proxy,
    43  	}
    44  }
    45  
    46  func (p *workloadCluster) GetKubeconfig(ctx context.Context, workloadClusterName string, namespace string) (string, error) {
    47  	cs, err := p.proxy.NewClient()
    48  	if err != nil {
    49  		return "", err
    50  	}
    51  
    52  	obj := client.ObjectKey{
    53  		Namespace: namespace,
    54  		Name:      workloadClusterName,
    55  	}
    56  	dataBytes, err := utilkubeconfig.FromSecret(ctx, cs, obj)
    57  	if err != nil {
    58  		return "", errors.Wrapf(err, "\"%s-kubeconfig\" not found in namespace %q", workloadClusterName, namespace)
    59  	}
    60  	return string(dataBytes), nil
    61  }