/
utils.go
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/
utils.go
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// Copyright 2019-2024 The Liqo 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 shadowendpointslicectrl
import (
corev1 "k8s.io/api/core/v1"
discoveryv1 "k8s.io/api/discovery/v1"
corev1apply "k8s.io/client-go/applyconfigurations/core/v1"
discoveryv1apply "k8s.io/client-go/applyconfigurations/discovery/v1"
)
// EndpointSliceApply forges the apply patch for the endpointslice.
func EndpointSliceApply(eps *discoveryv1.EndpointSlice) *discoveryv1apply.EndpointSliceApplyConfiguration {
return discoveryv1apply.EndpointSlice(eps.GetName(), eps.GetNamespace()).
WithLabels(eps.GetLabels()).
WithAnnotations(eps.GetAnnotations()).
WithAddressType(eps.AddressType).
WithEndpoints(EndpointsApply(eps.Endpoints)...).
WithPorts(EndpointPortsApply(eps.Ports)...)
}
// EndpointsApply forges the apply patch for the endpoints of the reflected endpointslice, given the local ones.
func EndpointsApply(endpoints []discoveryv1.Endpoint) []*discoveryv1apply.EndpointApplyConfiguration {
var output []*discoveryv1apply.EndpointApplyConfiguration
for i := range endpoints {
ep := &endpoints[i]
conditions := &discoveryv1apply.EndpointConditionsApplyConfiguration{Ready: ep.Conditions.Ready}
epApply := discoveryv1apply.Endpoint().
WithAddresses(ep.Addresses...).
WithConditions(conditions).
WithTargetRef(ObjectReferenceApply(ep.TargetRef)).
WithHints(EndpointHintsApply(ep.Hints))
epApply.NodeName = ep.NodeName
epApply.Hostname = ep.Hostname
epApply.Zone = ep.Zone
output = append(output, epApply)
}
return output
}
// ObjectReferenceApply forges the apply patch for a reflected ObjectReference.
func ObjectReferenceApply(ref *corev1.ObjectReference) *corev1apply.ObjectReferenceApplyConfiguration {
if ref == nil {
return nil
}
return corev1apply.ObjectReference().
WithAPIVersion(ref.APIVersion).WithFieldPath(ref.FieldPath).
WithKind(ref.Kind).WithName(ref.Name).WithNamespace(ref.Namespace).
WithResourceVersion(ref.ResourceVersion).WithUID(ref.UID)
}
// EndpointHintsApply forges the apply patch for the endpoint hints of the reflected endpointslice, given the local ones.
func EndpointHintsApply(hints *discoveryv1.EndpointHints) *discoveryv1apply.EndpointHintsApplyConfiguration {
if hints == nil {
return nil
}
output := discoveryv1apply.EndpointHints()
for _, zone := range hints.ForZones {
output.WithForZones(discoveryv1apply.ForZone().WithName(zone.Name))
}
return output
}
// EndpointPortsApply forges the apply patch for the ports of the reflected endpointslice, given the local ones.
func EndpointPortsApply(ports []discoveryv1.EndpointPort) []*discoveryv1apply.EndpointPortApplyConfiguration {
var output []*discoveryv1apply.EndpointPortApplyConfiguration
for i := range ports {
port := &ports[i]
output = append(output, &discoveryv1apply.EndpointPortApplyConfiguration{
Name: port.Name, Port: port.Port, Protocol: port.Protocol, AppProtocol: port.AppProtocol,
})
}
return output
}