k8sgpt/pkg/analyzer/rs.go

package analyzer

import (
	"fmt"

	"github.com/k8sgpt-ai/k8sgpt/pkg/common"
	"github.com/k8sgpt-ai/k8sgpt/pkg/util"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)

type ReplicaSetAnalyzer struct{}

func (ReplicaSetAnalyzer) Analyze(a common.Analyzer) ([]common.Result, error) {

	kind := "ReplicaSet"

	AnalyzerErrorsMetric.DeletePartialMatch(map[string]string{
		"analyzer_name": kind,
	})

	// search all namespaces for pods that are not running
	list, err := a.Client.GetClient().AppsV1().ReplicaSets(a.Namespace).List(a.Context, metav1.ListOptions{})
	if err != nil {
		return nil, err
	}

	var preAnalysis = map[string]common.PreAnalysis{}

	for _, rs := range list.Items {
		var failures []common.Failure

		// Check for empty rs
		if rs.Status.Replicas == 0 {

			// Check through container status to check for crashes
			for _, rsStatus := range rs.Status.Conditions {
				if rsStatus.Type == "ReplicaFailure" && rsStatus.Reason == "FailedCreate" {
					failures = append(failures, common.Failure{
						Text:      rsStatus.Message,
						Sensitive: []common.Sensitive{},
					})

				}
			}
		}
		if len(failures) > 0 {
			preAnalysis[fmt.Sprintf("%s/%s", rs.Namespace, rs.Name)] = common.PreAnalysis{
				ReplicaSet:     rs,
				FailureDetails: failures,
			}
			AnalyzerErrorsMetric.WithLabelValues(kind, rs.Name, rs.Namespace).Set(float64(len(failures)))
		}
	}

	for key, value := range preAnalysis {
		var currentAnalysis = common.Result{
			Kind:  kind,
			Name:  key,
			Error: value.FailureDetails,
		}

		parent, _ := util.GetParent(a.Client, value.ReplicaSet.ObjectMeta)
		currentAnalysis.ParentObject = parent
		a.Results = append(a.Results, currentAnalysis)
	}
	return a.Results, nil
}