127 lines
4.4 KiB
Go
127 lines
4.4 KiB
Go
/*
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Copyright 2021 The Karmada 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 detector
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import (
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"math"
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"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
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"k8s.io/klog/v2"
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policyv1alpha1 "github.com/karmada-io/karmada/pkg/apis/policy/v1alpha1"
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"github.com/karmada-io/karmada/pkg/util"
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"github.com/karmada-io/karmada/pkg/util/fedinformer/keys"
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)
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func getHighestPriorityPropagationPolicy(policies []*policyv1alpha1.PropagationPolicy, resource *unstructured.Unstructured, objectKey keys.ClusterWideKey) *policyv1alpha1.PropagationPolicy {
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matchedPolicyImplicitPriority := util.PriorityMisMatch
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matchedPolicyExplicitPriority := int32(math.MinInt32)
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var matchedPolicy *policyv1alpha1.PropagationPolicy
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for _, policy := range policies {
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implicitPriority := util.ResourceMatchSelectorsPriority(resource, policy.Spec.ResourceSelectors...)
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if implicitPriority <= util.PriorityMisMatch {
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continue
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}
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explicitPriority := policy.ExplicitPriority()
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if matchedPolicyExplicitPriority < explicitPriority {
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matchedPolicyImplicitPriority = implicitPriority
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matchedPolicyExplicitPriority = explicitPriority
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matchedPolicy = policy
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continue
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}
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if matchedPolicyExplicitPriority == explicitPriority {
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if implicitPriority > matchedPolicyImplicitPriority {
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matchedPolicyImplicitPriority = implicitPriority
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matchedPolicy = policy
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} else if implicitPriority == matchedPolicyImplicitPriority {
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matchedPolicy = getHigherPriorityPropagationPolicy(matchedPolicy, policy)
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}
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}
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}
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if matchedPolicy == nil {
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klog.V(2).Infof("No propagationpolicy match for resource(%s)", objectKey)
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return nil
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}
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klog.V(2).Infof("Matched policy(%s/%s) for resource(%s)", matchedPolicy.Namespace, matchedPolicy.Name, objectKey)
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return matchedPolicy
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}
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func getHighestPriorityClusterPropagationPolicy(policies []*policyv1alpha1.ClusterPropagationPolicy, resource *unstructured.Unstructured, objectKey keys.ClusterWideKey) *policyv1alpha1.ClusterPropagationPolicy {
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matchedClusterPolicyImplicitPriority := util.PriorityMisMatch
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matchedClusterPolicyExplicitPriority := int32(math.MinInt32)
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var matchedClusterPolicy *policyv1alpha1.ClusterPropagationPolicy
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for _, policy := range policies {
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implicitPriority := util.ResourceMatchSelectorsPriority(resource, policy.Spec.ResourceSelectors...)
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if implicitPriority <= util.PriorityMisMatch {
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continue
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}
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explicitPriority := policy.ExplicitPriority()
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if matchedClusterPolicyExplicitPriority < explicitPriority {
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matchedClusterPolicyImplicitPriority = implicitPriority
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matchedClusterPolicyExplicitPriority = explicitPriority
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matchedClusterPolicy = policy
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continue
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}
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if matchedClusterPolicyExplicitPriority == explicitPriority {
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if implicitPriority > matchedClusterPolicyImplicitPriority {
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matchedClusterPolicyImplicitPriority = implicitPriority
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matchedClusterPolicy = policy
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} else if implicitPriority == matchedClusterPolicyImplicitPriority {
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matchedClusterPolicy = getHigherPriorityClusterPropagationPolicy(matchedClusterPolicy, policy)
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}
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}
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}
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if matchedClusterPolicy == nil {
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klog.V(2).Infof("No clusterpropagationpolicy match for resource(%s)", objectKey)
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return nil
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}
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klog.V(2).Infof("Matched cluster policy(%s) for resource(%s)", matchedClusterPolicy.Name, objectKey)
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return matchedClusterPolicy
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}
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// getHigherPriorityPropagationPolicy compare two PropagationPolicies with some priority comparison logic
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func getHigherPriorityPropagationPolicy(a, b *policyv1alpha1.PropagationPolicy) *policyv1alpha1.PropagationPolicy {
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if a == nil {
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return b
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}
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// logic of priority comparison
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if a.Name < b.Name {
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return a
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}
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return b
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}
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// getHigherPriorityClusterPropagationPolicy compare two ClusterPropagationPolicies with some priority comparison logic
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func getHigherPriorityClusterPropagationPolicy(a, b *policyv1alpha1.ClusterPropagationPolicy) *policyv1alpha1.ClusterPropagationPolicy {
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if a == nil {
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return b
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}
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// logic of priority comparison
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if a.Name < b.Name {
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return a
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}
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return b
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}
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