github.com/alibaba/sealer@v0.8.6-0.20220430115802-37a2bdaa8173/pkg/checker/pod_checker.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 checker
    16  
    17  import (
    18  	"text/template"
    19  
    20  	corev1 "k8s.io/api/core/v1"
    21  
    22  	"github.com/alibaba/sealer/common"
    23  	"github.com/alibaba/sealer/logger"
    24  	"github.com/alibaba/sealer/pkg/client/k8s"
    25  	v2 "github.com/alibaba/sealer/types/api/v2"
    26  )
    27  
    28  type PodChecker struct {
    29  	client *k8s.Client
    30  }
    31  
    32  type PodNamespaceStatus struct {
    33  	NamespaceName     string
    34  	RunningCount      uint32
    35  	NotRunningCount   uint32
    36  	PodCount          uint32
    37  	NotRunningPodList []*corev1.Pod
    38  }
    39  
    40  var PodNamespaceStatusList []PodNamespaceStatus
    41  
    42  func (n *PodChecker) Check(cluster *v2.Cluster, phase string) error {
    43  	if phase != PhasePost {
    44  		return nil
    45  	}
    46  	c, err := k8s.Newk8sClient()
    47  	if err != nil {
    48  		return err
    49  	}
    50  	n.client = c
    51  
    52  	namespacePodList, err := n.client.ListAllNamespacesPods()
    53  	if err != nil {
    54  		return err
    55  	}
    56  	for _, podNamespace := range namespacePodList {
    57  		var runningCount uint32 = 0
    58  		var notRunningCount uint32 = 0
    59  		var podCount uint32
    60  		var notRunningPodList []*corev1.Pod
    61  		for _, pod := range podNamespace.PodList.Items {
    62  			if err := getPodReadyStatus(pod); err != nil {
    63  				notRunningCount++
    64  				newPod := pod
    65  				notRunningPodList = append(notRunningPodList, &newPod)
    66  			} else {
    67  				runningCount++
    68  			}
    69  		}
    70  		podCount = runningCount + notRunningCount
    71  		podNamespaceStatus := PodNamespaceStatus{
    72  			NamespaceName:     podNamespace.Namespace.Name,
    73  			RunningCount:      runningCount,
    74  			NotRunningCount:   notRunningCount,
    75  			PodCount:          podCount,
    76  			NotRunningPodList: notRunningPodList,
    77  		}
    78  		PodNamespaceStatusList = append(PodNamespaceStatusList, podNamespaceStatus)
    79  	}
    80  	err = n.Output(PodNamespaceStatusList)
    81  	if err != nil {
    82  		return err
    83  	}
    84  	return nil
    85  }
    86  
    87  func (n *PodChecker) Output(podNamespaceStatusList []PodNamespaceStatus) error {
    88  	t := template.New("pod_checker")
    89  	t, err := t.Parse(
    90  		`Cluster Pod Status
    91    {{ range . -}}
    92    Namespace: {{ .NamespaceName }}
    93    RunningPod: {{ .RunningCount }}/{{ .PodCount }}
    94    {{ if (gt .NotRunningCount 0) -}}
    95    Not Running Pod List:
    96      {{- range .NotRunningPodList }}
    97      PodName: {{ .Name }}
    98      {{- end }}
    99    {{ end }}
   100    {{- end }}
   101  `)
   102  	if err != nil {
   103  		panic(err)
   104  	}
   105  	t = template.Must(t, err)
   106  	err = t.Execute(common.StdOut, podNamespaceStatusList)
   107  	if err != nil {
   108  		logger.Error("pod checkers template can not excute %s", err)
   109  		return err
   110  	}
   111  	return nil
   112  }
   113  
   114  func getPodReadyStatus(pod corev1.Pod) error {
   115  	for _, condition := range pod.Status.Conditions {
   116  		if condition.Type == "Ready" {
   117  			if condition.Status == "True" {
   118  				return nil
   119  			}
   120  		}
   121  	}
   122  	return &NotFindReadyTypeError{}
   123  }
   124  
   125  func NewPodChecker() Interface {
   126  	return &PodChecker{}
   127  }