/*
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/weibaohui/k8m/pkg/plugins/modules/k8sgpt/service/common"
"github.com/weibaohui/k8m/pkg/plugins/modules/k8sgpt/service/kubernetes"
"github.com/weibaohui/k8m/pkg/plugins/modules/k8sgpt/service/util"
"github.com/weibaohui/kom/kom"
v1 "k8s.io/api/core/v1"
networkingv1 "k8s.io/api/networking/v1"
"k8s.io/apimachinery/pkg/runtime/schema"
)
type IngressAnalyzer struct{}
func (IngressAnalyzer) Analyze(a common.Analyzer) ([]common.Result, error) {
kind := "Ingress"
apiDoc := kubernetes.K8sApiReference{
Kind: kind,
ApiVersion: schema.GroupVersion{
Group: "networking",
Version: "v1",
},
OpenapiSchema: a.OpenapiSchema,
}
AnalyzerErrorsMetric.DeletePartialMatch(map[string]string{
"analyzer_name": kind,
})
var list []*networkingv1.Ingress
err := kom.Cluster(a.ClusterID).WithContext(a.Context).Resource(&networkingv1.Ingress{}).Namespace(a.Namespace).List(&list).Error
if err != nil {
return nil, err
}
var preAnalysis = map[string]common.PreAnalysis{}
for _, ing := range list {
var failures []common.Failure
// get ingressClassName
ingressClassName := ing.Spec.IngressClassName
if ingressClassName == nil {
ingClassValue := ing.Annotations["kubernetes.io/ingress.class"]
if ingClassValue == "" {
doc := apiDoc.GetApiDocV2("spec.ingressClassName")
failures = append(failures, common.Failure{
Text: fmt.Sprintf("Ingress %s/%s does not specify an Ingress class.", ing.Namespace, ing.Name),
KubernetesDoc: doc,
Sensitive: []common.Sensitive{
{
Unmasked: ing.Namespace,
Masked: util.MaskString(ing.Namespace),
},
{
Unmasked: ing.Name,
Masked: util.MaskString(ing.Name),
},
},
})
} else {
ingressClassName = &ingClassValue
}
}
// check if ingressclass exist
if ingressClassName != nil {
var ingClass *networkingv1.IngressClass
err = kom.Cluster(a.ClusterID).WithContext(a.Context).Resource(&networkingv1.IngressClass{}).Name(*ingressClassName).Get(&ingClass).Error
if err != nil {
doc := apiDoc.GetApiDocV2("spec.ingressClassName")
failures = append(failures, common.Failure{
Text: fmt.Sprintf("Ingress uses the ingress class %s which does not exist.", *ingressClassName),
KubernetesDoc: doc,
Sensitive: []common.Sensitive{
{
Unmasked: *ingressClassName,
Masked: util.MaskString(*ingressClassName),
},
},
})
}
}
// loop over rules
for _, rule := range ing.Spec.Rules {
// loop over HTTP paths
if rule.HTTP != nil {
for _, path := range rule.HTTP.Paths {
if path.Backend.Service == nil {
continue
}
if path.Backend.Service.Name == "" {
continue
}
var svc *v1.Service
err = kom.Cluster(a.ClusterID).WithContext(a.Context).Resource(&v1.Service{}).Namespace(ing.Namespace).Name(path.Backend.Service.Name).Get(&svc).Error
if err != nil {
doc := apiDoc.GetApiDocV2("spec.rules.http.paths.backend.service")
failures = append(failures, common.Failure{
Text: fmt.Sprintf("Ingress uses the service %s/%s which does not exist.", ing.Namespace, path.Backend.Service.Name),
KubernetesDoc: doc,
Sensitive: []common.Sensitive{
{
Unmasked: ing.Namespace,
Masked: util.MaskString(ing.Namespace),
},
{
Unmasked: path.Backend.Service.Name,
Masked: util.MaskString(path.Backend.Service.Name),
},
},
})
}
}
}
}
for _, tls := range ing.Spec.TLS {
var secret *v1.Secret
err = kom.Cluster(a.ClusterID).WithContext(a.Context).Resource(&v1.Secret{}).Namespace(ing.Namespace).Name(tls.SecretName).Get(&secret).Error
if err != nil {
doc := apiDoc.GetApiDocV2("spec.tls.secretName")
failures = append(failures, common.Failure{
Text: fmt.Sprintf("Ingress uses the secret %s/%s as a TLS certificate which does not exist.", ing.Namespace, tls.SecretName),
KubernetesDoc: doc,
Sensitive: []common.Sensitive{
{
Unmasked: ing.Namespace,
Masked: util.MaskString(ing.Namespace),
},
{
Unmasked: tls.SecretName,
Masked: util.MaskString(tls.SecretName),
},
},
})
}
}
if len(failures) > 0 {
preAnalysis[fmt.Sprintf("%s/%s", ing.Namespace, ing.Name)] = common.PreAnalysis{
Ingress: *ing,
FailureDetails: failures,
}
AnalyzerErrorsMetric.WithLabelValues(kind, ing.Name, ing.Namespace).Set(float64(len(failures)))
}
}
for key, value := range preAnalysis {
var currentAnalysis = common.Result{
Kind: kind,
Name: key,
Error: value.FailureDetails,
}
parent, found := util.GetParent(a.Context, a.ClusterID, value.Ingress.ObjectMeta)
if found {
currentAnalysis.ParentObject = parent
}
a.Results = append(a.Results, currentAnalysis)
}
return a.Results, nil
}
