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helper.go
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helper.go
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/*
Copyright 2022 The Karmada 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 resourceinterpretercustomization
import (
"context"
"fmt"
"time"
configv1alpha1 "github.com/karmada-io/karmada/pkg/apis/config/v1alpha1"
"github.com/karmada-io/karmada/pkg/resourceinterpreter/customized/declarative/luavm"
"github.com/karmada-io/karmada/pkg/util/interpreter"
)
func validateCustomizationRule(oldRules, newRules *configv1alpha1.ResourceInterpreterCustomization) error {
if oldRules.Spec.Target.APIVersion != newRules.Spec.Target.APIVersion ||
oldRules.Spec.Target.Kind != newRules.Spec.Target.Kind {
return nil
}
for _, rule := range interpreter.AllResourceInterpreterCustomizationRules {
// skip InterpretDependency operation because it supports multiple rules.
if rule.Name() == string(configv1alpha1.InterpreterOperationInterpretDependency) {
continue
}
oldScript := rule.GetScript(oldRules)
newScript := rule.GetScript(newRules)
if oldScript != "" && newScript != "" {
return fmt.Errorf("conflicting with InterpreterOperation(%s) of existing ResourceInterpreterCustomization(%s)", rule.Name(), oldRules.Name)
}
}
return nil
}
func checkCustomizationsRule(customization *configv1alpha1.ResourceInterpreterCustomization) error {
ctx, cancel := context.WithTimeout(context.TODO(), time.Second)
defer cancel()
l, err := luavm.NewWithContext(ctx)
if err != nil {
return err
}
defer l.Close()
for _, rule := range interpreter.AllResourceInterpreterCustomizationRules {
if script := rule.GetScript(customization); script != "" {
if _, err = l.LoadString(script); err != nil {
return fmt.Errorf("InterpreterOperation(%s) Lua script error: %v", rule.Name(), err)
}
}
}
return nil
}
func validateResourceInterpreterCustomizations(newConfig *configv1alpha1.ResourceInterpreterCustomization, customizations *configv1alpha1.ResourceInterpreterCustomizationList) error {
for _, config := range customizations.Items {
// skip self verification
if config.Name == newConfig.Name {
continue
}
oldConfig := config
if err := validateCustomizationRule(&oldConfig, newConfig); err != nil {
return err
}
}
return checkCustomizationsRule(newConfig)
}