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vendor/github.com/projectcalico/libcalico-go/lib/clientv3/globalnetworkpolicy.go
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vendored
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206
vendor/github.com/projectcalico/libcalico-go/lib/clientv3/globalnetworkpolicy.go
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// Copyright (c) 2017-2018 Tigera, Inc. All rights reserved.
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package clientv3
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import (
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"context"
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"strings"
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apiv3 "github.com/projectcalico/libcalico-go/lib/apis/v3"
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"github.com/projectcalico/libcalico-go/lib/options"
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validator "github.com/projectcalico/libcalico-go/lib/validator/v3"
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"github.com/projectcalico/libcalico-go/lib/watch"
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)
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// GlobalNetworkPolicyInterface has methods to work with GlobalNetworkPolicy resources.
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type GlobalNetworkPolicyInterface interface {
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Create(ctx context.Context, res *apiv3.GlobalNetworkPolicy, opts options.SetOptions) (*apiv3.GlobalNetworkPolicy, error)
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Update(ctx context.Context, res *apiv3.GlobalNetworkPolicy, opts options.SetOptions) (*apiv3.GlobalNetworkPolicy, error)
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Delete(ctx context.Context, name string, opts options.DeleteOptions) (*apiv3.GlobalNetworkPolicy, error)
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Get(ctx context.Context, name string, opts options.GetOptions) (*apiv3.GlobalNetworkPolicy, error)
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List(ctx context.Context, opts options.ListOptions) (*apiv3.GlobalNetworkPolicyList, error)
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Watch(ctx context.Context, opts options.ListOptions) (watch.Interface, error)
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}
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// globalNetworkPolicies implements GlobalNetworkPolicyInterface
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type globalNetworkPolicies struct {
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client client
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}
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// Create takes the representation of a GlobalNetworkPolicy and creates it. Returns the stored
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// representation of the GlobalNetworkPolicy, and an error, if there is any.
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func (r globalNetworkPolicies) Create(ctx context.Context, res *apiv3.GlobalNetworkPolicy, opts options.SetOptions) (*apiv3.GlobalNetworkPolicy, error) {
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if res != nil {
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// Since we're about to default some fields, take a (shallow) copy of the input data
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// before we do so.
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resCopy := *res
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res = &resCopy
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}
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defaultPolicyTypesField(res.Spec.Ingress, res.Spec.Egress, &res.Spec.Types)
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if err := validator.Validate(res); err != nil {
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return nil, err
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}
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// Properly prefix the name
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res.GetObjectMeta().SetName(convertPolicyNameForStorage(res.GetObjectMeta().GetName()))
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out, err := r.client.resources.Create(ctx, opts, apiv3.KindGlobalNetworkPolicy, res)
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if out != nil {
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// Remove the prefix out of the returned policy name.
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out.GetObjectMeta().SetName(convertPolicyNameFromStorage(out.GetObjectMeta().GetName()))
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return out.(*apiv3.GlobalNetworkPolicy), err
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}
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// Remove the prefix out of the returned policy name.
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res.GetObjectMeta().SetName(convertPolicyNameFromStorage(res.GetObjectMeta().GetName()))
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return nil, err
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}
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// Update takes the representation of a GlobalNetworkPolicy and updates it. Returns the stored
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// representation of the GlobalNetworkPolicy, and an error, if there is any.
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func (r globalNetworkPolicies) Update(ctx context.Context, res *apiv3.GlobalNetworkPolicy, opts options.SetOptions) (*apiv3.GlobalNetworkPolicy, error) {
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if res != nil {
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// Since we're about to default some fields, take a (shallow) copy of the input data
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// before we do so.
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resCopy := *res
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res = &resCopy
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}
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defaultPolicyTypesField(res.Spec.Ingress, res.Spec.Egress, &res.Spec.Types)
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if err := validator.Validate(res); err != nil {
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return nil, err
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}
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// Properly prefix the name
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res.GetObjectMeta().SetName(convertPolicyNameForStorage(res.GetObjectMeta().GetName()))
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out, err := r.client.resources.Update(ctx, opts, apiv3.KindGlobalNetworkPolicy, res)
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if out != nil {
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// Remove the prefix out of the returned policy name.
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out.GetObjectMeta().SetName(convertPolicyNameFromStorage(out.GetObjectMeta().GetName()))
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return out.(*apiv3.GlobalNetworkPolicy), err
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}
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// Remove the prefix out of the returned policy name.
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res.GetObjectMeta().SetName(convertPolicyNameFromStorage(res.GetObjectMeta().GetName()))
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return nil, err
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}
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// Delete takes name of the GlobalNetworkPolicy and deletes it. Returns an error if one occurs.
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func (r globalNetworkPolicies) Delete(ctx context.Context, name string, opts options.DeleteOptions) (*apiv3.GlobalNetworkPolicy, error) {
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out, err := r.client.resources.Delete(ctx, opts, apiv3.KindGlobalNetworkPolicy, noNamespace, convertPolicyNameForStorage(name))
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if out != nil {
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// Remove the prefix out of the returned policy name.
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out.GetObjectMeta().SetName(convertPolicyNameFromStorage(out.GetObjectMeta().GetName()))
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return out.(*apiv3.GlobalNetworkPolicy), err
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}
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return nil, err
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}
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// Get takes name of the GlobalNetworkPolicy, and returns the corresponding GlobalNetworkPolicy object,
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// and an error if there is any.
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func (r globalNetworkPolicies) Get(ctx context.Context, name string, opts options.GetOptions) (*apiv3.GlobalNetworkPolicy, error) {
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out, err := r.client.resources.Get(ctx, opts, apiv3.KindGlobalNetworkPolicy, noNamespace, convertPolicyNameForStorage(name))
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if out != nil {
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// Remove the prefix out of the returned policy name.
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out.GetObjectMeta().SetName(convertPolicyNameFromStorage(out.GetObjectMeta().GetName()))
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return out.(*apiv3.GlobalNetworkPolicy), err
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}
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return nil, err
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}
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// List returns the list of GlobalNetworkPolicy objects that match the supplied options.
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func (r globalNetworkPolicies) List(ctx context.Context, opts options.ListOptions) (*apiv3.GlobalNetworkPolicyList, error) {
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res := &apiv3.GlobalNetworkPolicyList{}
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// Add the name prefix if name is provided
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if opts.Name != "" {
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opts.Name = convertPolicyNameForStorage(opts.Name)
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}
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if err := r.client.resources.List(ctx, opts, apiv3.KindGlobalNetworkPolicy, apiv3.KindGlobalNetworkPolicyList, res); err != nil {
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return nil, err
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}
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// Remove the prefix off of each policy name
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for i, _ := range res.Items {
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name := res.Items[i].GetObjectMeta().GetName()
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res.Items[i].GetObjectMeta().SetName(convertPolicyNameFromStorage(name))
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}
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return res, nil
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}
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// Watch returns a watch.Interface that watches the globalNetworkPolicies that match the
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// supplied options.
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func (r globalNetworkPolicies) Watch(ctx context.Context, opts options.ListOptions) (watch.Interface, error) {
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// Add the name prefix if name is provided
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if opts.Name != "" {
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opts.Name = convertPolicyNameForStorage(opts.Name)
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}
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return r.client.resources.Watch(ctx, opts, apiv3.KindGlobalNetworkPolicy, &policyConverter{})
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}
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func defaultPolicyTypesField(ingressRules, egressRules []apiv3.Rule, types *[]apiv3.PolicyType) {
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if len(*types) == 0 {
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// Default the Types field according to what inbound and outbound rules are present
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// in the policy.
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if len(egressRules) == 0 {
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// Policy has no egress rules, so apply this policy to ingress only. (Note:
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// intentionally including the case where the policy also has no ingress
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// rules.)
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*types = []apiv3.PolicyType{apiv3.PolicyTypeIngress}
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} else if len(ingressRules) == 0 {
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// Policy has egress rules but no ingress rules, so apply this policy to
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// egress only.
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*types = []apiv3.PolicyType{apiv3.PolicyTypeEgress}
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} else {
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// Policy has both ingress and egress rules, so apply this policy to both
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// ingress and egress.
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*types = []apiv3.PolicyType{apiv3.PolicyTypeIngress, apiv3.PolicyTypeEgress}
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}
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}
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}
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func convertPolicyNameForStorage(name string) string {
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// Do nothing on names prefixed with "knp."
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if strings.HasPrefix(name, "knp.") {
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return name
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}
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// Similarly for "ossg."
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if strings.HasPrefix(name, "ossg.") {
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return name
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}
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return "default." + name
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}
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func convertPolicyNameFromStorage(name string) string {
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// Do nothing on names prefixed with "knp."
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if strings.HasPrefix(name, "knp.") {
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return name
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}
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// Similarly for "ossg."
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if strings.HasPrefix(name, "ossg.") {
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return name
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}
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parts := strings.SplitN(name, ".", 2)
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return parts[len(parts)-1]
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}
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type policyConverter struct{}
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func (pc *policyConverter) Convert(r resource) resource {
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r.GetObjectMeta().SetName(convertPolicyNameFromStorage(r.GetObjectMeta().GetName()))
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return r
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}
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