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feat(cache): use shallow copy instead of deep copy (#11378)

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Signed-off-by: Khaled Emara <khaled.emara@nirmata.com>
This commit is contained in:
Khaled Emara 2024-10-10 13:32:38 +03:00 • committed by GitHub
parent 521e43a224
commit 8bf704edc5
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GPG key ID: B5690EEEBB952194
1 changed files with 22 additions and 10 deletions
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32
pkg/policycache/cache.go
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@ -3,7 +3,6 @@ package policycache
import (
kyvernov1 "github.com/kyverno/kyverno/api/kyverno/v1"
"github.com/kyverno/kyverno/ext/wildcard"
"github.com/kyverno/kyverno/pkg/autogen"
"github.com/kyverno/kyverno/pkg/clients/dclient"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime/schema"
@ -80,8 +79,12 @@ func filterPolicies(pkey PolicyType, result []kyvernov1.PolicyInterface, nspace
}
func checkValidationFailureActionOverrides(enforce bool, ns string, policy kyvernov1.PolicyInterface) (bool, kyvernov1.PolicyInterface) {
var filteredRules []kyvernov1.Rule
for _, rule := range autogen.ComputeRules(policy, "") {
filteredRules := make([]kyvernov1.Rule, 0, len(policy.GetSpec().Rules))
// Use pointer to avoid copying the rule in each iteration
for i := range policy.GetSpec().Rules {
rule := &policy.GetSpec().Rules[i]
if !rule.HasValidate() {
continue
}
@ -89,7 +92,8 @@ func checkValidationFailureActionOverrides(enforce bool, ns string, policy kyver
// if the field isn't set, use the higher level policy setting
validationFailureAction := rule.Validation.FailureAction
if validationFailureAction == nil {
validationFailureAction = &policy.GetSpec().ValidationFailureAction
policyAction := policy.GetSpec().ValidationFailureAction
validationFailureAction = &policyAction
}
validationFailureActionOverrides := rule.Validation.FailureActionOverrides
@ -98,21 +102,29 @@ func checkValidationFailureActionOverrides(enforce bool, ns string, policy kyver
}
if (ns == "" || len(validationFailureActionOverrides) == 0) && validationFailureAction.Enforce() == enforce {
filteredRules = append(filteredRules, rule)
filteredRules = append(filteredRules, *rule)
continue
}
for _, action := range validationFailureActionOverrides {
if action.Action.Enforce() == enforce && wildcard.CheckPatterns(action.Namespaces, ns) {
filteredRules = append(filteredRules, rule)
continue
filteredRules = append(filteredRules, *rule)
break // Changed continue to break since we found a match
}
}
}
if len(filteredRules) > 0 {
filteredPolicy := policy.CreateDeepCopy()
filteredPolicy.GetSpec().Rules = filteredRules
var filteredPolicy kyvernov1.PolicyInterface
if _, ok := policy.(*kyvernov1.Policy); ok {
shallowCopy := *policy.(*kyvernov1.Policy)
filteredPolicy = &shallowCopy
} else {
shallowCopy := *policy.(*kyvernov1.ClusterPolicy)
filteredPolicy = &shallowCopy
}
filteredPolicy.GetSpec().SetRules(filteredRules)
return true, filteredPolicy
}
return false, nil
}