github.com/alibaba/sealer@v0.8.6-0.20220430115802-37a2bdaa8173/apply/applydriver/utils.go (about)

     1  // Copyright © 2021 Alibaba Group Holding Ltd.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package applydriver
    16  
    17  import (
    18  	"fmt"
    19  
    20  	"github.com/Masterminds/semver/v3"
    21  	corev1 "k8s.io/api/core/v1"
    22  
    23  	"github.com/alibaba/sealer/common"
    24  	"github.com/alibaba/sealer/pkg/client/k8s"
    25  	v2 "github.com/alibaba/sealer/types/api/v2"
    26  
    27  	"github.com/alibaba/sealer/logger"
    28  	"github.com/alibaba/sealer/utils"
    29  )
    30  
    31  const MasterRoleLabel = "node-role.kubernetes.io/master"
    32  
    33  func GetCurrentCluster(client *k8s.Client) (*v2.Cluster, error) {
    34  	if client == nil {
    35  		return nil, nil
    36  	}
    37  	nodes, err := client.ListNodes()
    38  	if err != nil {
    39  		return nil, err
    40  	}
    41  
    42  	cluster := &v2.Cluster{}
    43  	var masterIPList []string
    44  	var nodeIPList []string
    45  
    46  	for _, node := range nodes.Items {
    47  		addr := getNodeAddress(node)
    48  		if addr == "" {
    49  			continue
    50  		}
    51  		if _, ok := node.Labels[MasterRoleLabel]; ok {
    52  			masterIPList = append(masterIPList, addr)
    53  			continue
    54  		}
    55  		nodeIPList = append(nodeIPList, addr)
    56  	}
    57  	cluster.Spec.Hosts = []v2.Host{{IPS: masterIPList, Roles: []string{common.MASTER}}, {IPS: nodeIPList, Roles: []string{common.NODE}}}
    58  
    59  	return cluster, nil
    60  }
    61  
    62  func DeleteNodes(client *k8s.Client, nodeIPs []string) error {
    63  	logger.Info("delete nodes %s", nodeIPs)
    64  	nodes, err := client.ListNodes()
    65  	if err != nil {
    66  		return err
    67  	}
    68  	for _, node := range nodes.Items {
    69  		addr := getNodeAddress(node)
    70  		if addr == "" || utils.NotIn(addr, nodeIPs) {
    71  			continue
    72  		}
    73  		if err := client.DeleteNode(node.Name); err != nil {
    74  			return fmt.Errorf("failed to delete node %v", err)
    75  		}
    76  	}
    77  	return nil
    78  }
    79  
    80  func getNodeAddress(node corev1.Node) string {
    81  	if len(node.Status.Addresses) < 1 {
    82  		return ""
    83  	}
    84  	return node.Status.Addresses[0].Address
    85  }
    86  
    87  func VersionCompatible(version, constraint string) bool {
    88  	if constraint == "" {
    89  		return true
    90  	}
    91  	// ">= 1.19.8, <= 1.21.0"
    92  	c, err := semver.NewConstraint(constraint)
    93  	if err != nil {
    94  		return false
    95  	}
    96  
    97  	v, err := semver.NewVersion(version)
    98  	if err != nil {
    99  		return false
   100  	}
   101  
   102  	return c.Check(v)
   103  }