/
broker_validation.go
88 lines (71 loc) · 2.25 KB
/
broker_validation.go
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/*
Copyright 2020 The Knative 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 v1
import (
"context"
"knative.dev/pkg/apis"
"knative.dev/pkg/kmp"
)
const (
BrokerClassAnnotationKey = "eventing.knative.dev/broker.class"
)
func (b *Broker) Validate(ctx context.Context) *apis.FieldError {
withNS := apis.AllowDifferentNamespace(apis.WithinParent(ctx, b.ObjectMeta))
// Make sure a BrokerClassAnnotation exists
var errs *apis.FieldError
if bc, ok := b.GetAnnotations()[BrokerClassAnnotationKey]; !ok || bc == "" {
errs = errs.Also(apis.ErrMissingField(BrokerClassAnnotationKey))
}
errs = errs.Also(b.Spec.Validate(withNS).ViaField("spec"))
if apis.IsInUpdate(ctx) {
original := apis.GetBaseline(ctx).(*Broker)
errs = errs.Also(b.CheckImmutableFields(ctx, original))
}
return errs
}
func (bs *BrokerSpec) Validate(ctx context.Context) *apis.FieldError {
var errs *apis.FieldError
// Validate the Config
if bs.Config != nil {
if ce := bs.Config.Validate(ctx); ce != nil {
errs = errs.Also(ce.ViaField("config"))
}
}
if bs.Delivery != nil {
if de := bs.Delivery.Validate(ctx); de != nil {
errs = errs.Also(de.ViaField("delivery"))
}
}
return errs
}
func (b *Broker) CheckImmutableFields(ctx context.Context, original *Broker) *apis.FieldError {
if original == nil {
return nil
}
// Make sure you can't change the class annotation.
diff, err := kmp.ShortDiff(original.GetAnnotations()[BrokerClassAnnotationKey], b.GetAnnotations()[BrokerClassAnnotationKey])
if err != nil {
return &apis.FieldError{
Message: "couldn't diff the Broker objects",
Details: err.Error(),
}
}
if diff != "" {
return &apis.FieldError{
Message: "Immutable fields changed (-old +new)",
Paths: []string{"annotations"},
Details: diff,
}
}
return nil
}