mirror of
https://github.com/FairwindsOps/polaris.git
synced 2026-05-14 05:06:59 +00:00
95 lines
2.7 KiB
Go
95 lines
2.7 KiB
Go
// Copyright 2018 ReactiveOps
|
|
//
|
|
// 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 validator
|
|
|
|
import (
|
|
"context"
|
|
"net/http"
|
|
|
|
conf "github.com/reactiveops/fairwinds/pkg/config"
|
|
"github.com/reactiveops/fairwinds/pkg/report"
|
|
corev1 "k8s.io/api/core/v1"
|
|
"sigs.k8s.io/controller-runtime/pkg/client"
|
|
"sigs.k8s.io/controller-runtime/pkg/runtime/inject"
|
|
logf "sigs.k8s.io/controller-runtime/pkg/runtime/log"
|
|
"sigs.k8s.io/controller-runtime/pkg/webhook/admission"
|
|
"sigs.k8s.io/controller-runtime/pkg/webhook/admission/types"
|
|
)
|
|
|
|
var log = logf.Log.WithName("Fairwinds Validator")
|
|
|
|
// PodValidator validates Pods
|
|
type PodValidator struct {
|
|
client client.Client
|
|
decoder types.Decoder
|
|
Config conf.Configuration
|
|
}
|
|
|
|
// Implement admission.Handler so the controller can handle admission request.
|
|
var _ admission.Handler = &PodValidator{}
|
|
|
|
// Handle for PodValidator admits a pod if validation passes.
|
|
func (v *PodValidator) Handle(ctx context.Context, req types.Request) types.Response {
|
|
pod := &corev1.Pod{}
|
|
|
|
err := v.decoder.Decode(req, pod)
|
|
if err != nil {
|
|
return admission.ErrorResponse(http.StatusBadRequest, err)
|
|
}
|
|
|
|
results := validatePods(v.Config, pod, report.Results{})
|
|
allowed, reason := results.Format()
|
|
|
|
return admission.ValidationResponse(allowed, reason)
|
|
}
|
|
|
|
func validatePods(conf conf.Configuration, pod *corev1.Pod, results report.Results) report.Results {
|
|
for _, container := range pod.Spec.InitContainers {
|
|
results.InitContainers = append(
|
|
results.InitContainers,
|
|
validateContainer(conf, container),
|
|
)
|
|
}
|
|
|
|
for _, container := range pod.Spec.Containers {
|
|
results.Containers = append(
|
|
results.Containers,
|
|
validateContainer(conf, container),
|
|
)
|
|
}
|
|
|
|
return results
|
|
}
|
|
|
|
// PodValidator implements inject.Client.
|
|
// A client will be automatically injected.
|
|
var _ inject.Client = &PodValidator{}
|
|
|
|
// InjectClient injects the client.
|
|
func (v *PodValidator) InjectClient(c client.Client) error {
|
|
v.client = c
|
|
return nil
|
|
}
|
|
|
|
// PodValidator implements inject.Decoder.
|
|
// A decoder will be automatically injected.
|
|
var _ inject.Decoder = &PodValidator{}
|
|
|
|
// InjectDecoder injects the decoder.
|
|
func (v *PodValidator) InjectDecoder(d types.Decoder) error {
|
|
v.decoder = d
|
|
return nil
|
|
}
|