mirror of
https://github.com/kubevela/kubevela.git
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124 lines
4.2 KiB
Go
124 lines
4.2 KiB
Go
/*
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Copyright 2019 The Kruise Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package metrics
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import (
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"context"
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"fmt"
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"net/http"
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admissionv1beta1 "k8s.io/api/admission/v1beta1"
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apimachineryvalidation "k8s.io/apimachinery/pkg/api/validation"
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"k8s.io/apimachinery/pkg/util/validation/field"
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"sigs.k8s.io/controller-runtime/pkg/client"
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logf "sigs.k8s.io/controller-runtime/pkg/log"
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"sigs.k8s.io/controller-runtime/pkg/runtime/inject"
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"sigs.k8s.io/controller-runtime/pkg/webhook/admission"
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"github.com/oam-dev/kubevela/api/v1alpha1"
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)
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// ValidatingHandler handles MetricsTrait
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type ValidatingHandler struct {
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Client client.Client
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// Decoder decodes objects
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Decoder *admission.Decoder
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}
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// log is for logging in this package.
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var validatelog = logf.Log.WithName("metricstrait-validate")
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var _ admission.Handler = &ValidatingHandler{}
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// Handle handles admission requests.
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func (h *ValidatingHandler) Handle(ctx context.Context, req admission.Request) admission.Response {
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obj := &v1alpha1.MetricsTrait{}
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err := h.Decoder.Decode(req, obj)
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if err != nil {
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validatelog.Error(err, "decoder failed", "req operation", req.AdmissionRequest.Operation, "req",
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req.AdmissionRequest)
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return admission.Errored(http.StatusBadRequest, err)
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}
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switch req.AdmissionRequest.Operation {
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case admissionv1beta1.Create:
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if allErrs := ValidateCreate(obj); len(allErrs) > 0 {
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validatelog.Info("create failed", "name", obj.Name, "err", allErrs.ToAggregate().Error())
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return admission.Errored(http.StatusUnprocessableEntity, allErrs.ToAggregate())
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}
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case admissionv1beta1.Update:
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oldObj := &v1alpha1.MetricsTrait{}
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if err := h.Decoder.DecodeRaw(req.AdmissionRequest.OldObject, oldObj); err != nil {
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return admission.Errored(http.StatusBadRequest, err)
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}
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if allErrs := ValidateUpdate(obj, oldObj); len(allErrs) > 0 {
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validatelog.Info("update failed", "name", obj.Name, "err", allErrs.ToAggregate().Error())
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return admission.Errored(http.StatusUnprocessableEntity, allErrs.ToAggregate())
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}
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}
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return admission.ValidationResponse(true, "")
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}
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// ValidateCreate validates the metricsTrait on creation
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func ValidateCreate(r *v1alpha1.MetricsTrait) field.ErrorList {
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validatelog.Info("validate create", "name", r.Name)
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allErrs := apimachineryvalidation.ValidateObjectMeta(&r.ObjectMeta, true,
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apimachineryvalidation.NameIsDNSSubdomain, field.NewPath("metadata"))
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fldPath := field.NewPath("spec")
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if r.Spec.ScrapeService.Format != SupportedFormat {
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allErrs = append(allErrs, field.Invalid(fldPath.Child("ScrapeService.Format"), r.Spec.ScrapeService.Format,
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fmt.Sprintf("the data format `%s` is not supported", r.Spec.ScrapeService.Format)))
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}
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if r.Spec.ScrapeService.Scheme != SupportedScheme {
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allErrs = append(allErrs, field.Invalid(fldPath.Child("ScrapeService.Format"), r.Spec.ScrapeService.Scheme,
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fmt.Sprintf("the scheme `%s` is not supported", r.Spec.ScrapeService.Scheme)))
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}
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return allErrs
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}
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// ValidateUpdate validates the metricsTrait on update
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func ValidateUpdate(r *v1alpha1.MetricsTrait, _ *v1alpha1.MetricsTrait) field.ErrorList {
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validatelog.Info("validate update", "name", r.Name)
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return ValidateCreate(r)
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}
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// ValidateDelete validates the metricsTrait on delete
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func ValidateDelete(r *v1alpha1.MetricsTrait) field.ErrorList {
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validatelog.Info("validate delete", "name", r.Name)
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return nil
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}
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var _ inject.Client = &ValidatingHandler{}
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// InjectClient injects the client into the ValidatingHandler
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func (h *ValidatingHandler) InjectClient(c client.Client) error {
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h.Client = c
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return nil
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}
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var _ admission.DecoderInjector = &ValidatingHandler{}
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// InjectDecoder injects the decoder into the ValidatingHandler
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func (h *ValidatingHandler) InjectDecoder(d *admission.Decoder) error {
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h.Decoder = d
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return nil
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}
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