k8sgpt/pkg/analyzer/pdb.go
Alex Jones 3277b2ad4b
fix: pdb panic error guard (#664)
Signed-off-by: Alex Jones <alexsimonjones@gmail.com>
Co-authored-by: Aris Boutselis <aris.boutselis@senseon.io>
2023-09-17 12:12:28 +01:00

104 lines
2.9 KiB
Go

/*
Copyright 2023 The K8sGPT Authors.
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
http://www.apache.org/licenses/LICENSE-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 OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package analyzer
import (
"fmt"
"github.com/k8sgpt-ai/k8sgpt/pkg/common"
"github.com/k8sgpt-ai/k8sgpt/pkg/kubernetes"
"github.com/k8sgpt-ai/k8sgpt/pkg/util"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime/schema"
)
type PdbAnalyzer struct{}
func (PdbAnalyzer) Analyze(a common.Analyzer) ([]common.Result, error) {
kind := "PodDisruptionBudget"
apiDoc := kubernetes.K8sApiReference{
Kind: kind,
ApiVersion: schema.GroupVersion{
Group: "policy",
Version: "v1",
},
OpenapiSchema: a.OpenapiSchema,
}
AnalyzerErrorsMetric.DeletePartialMatch(map[string]string{
"analyzer_name": kind,
})
list, err := a.Client.GetClient().PolicyV1().PodDisruptionBudgets(a.Namespace).List(a.Context, metav1.ListOptions{})
if err != nil {
return nil, err
}
var preAnalysis = map[string]common.PreAnalysis{}
for _, pdb := range list.Items {
var failures []common.Failure
if pdb.Status.Conditions[0].Type == "DisruptionAllowed" && pdb.Status.Conditions[0].Status == "False" {
var doc string
if pdb.Spec.MaxUnavailable != nil {
doc = apiDoc.GetApiDocV2("spec.maxUnavailable")
}
if pdb.Spec.MinAvailable != nil {
doc = apiDoc.GetApiDocV2("spec.minAvailable")
}
if pdb.Spec.Selector != nil && pdb.Spec.Selector.MatchLabels != nil {
for k, v := range pdb.Spec.Selector.MatchLabels {
failures = append(failures, common.Failure{
Text: fmt.Sprintf("%s, expected pdb pod label %s=%s", pdb.Status.Conditions[0].Reason, k, v),
KubernetesDoc: doc,
Sensitive: []common.Sensitive{
{
Unmasked: k,
Masked: util.MaskString(k),
},
{
Unmasked: v,
Masked: util.MaskString(v),
},
},
})
}
}
}
if len(failures) > 0 {
preAnalysis[fmt.Sprintf("%s/%s", pdb.Namespace, pdb.Name)] = common.PreAnalysis{
PodDisruptionBudget: pdb,
FailureDetails: failures,
}
AnalyzerErrorsMetric.WithLabelValues(kind, pdb.Name, pdb.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.PodDisruptionBudget.ObjectMeta)
currentAnalysis.ParentObject = parent
a.Results = append(a.Results, currentAnalysis)
}
return a.Results, err
}