kubernetes protocolsforobject 源码
kubernetes protocolsforobject 代码
文件路径：/staging/src/k8s.io/kubectl/pkg/polymorphichelpers/protocolsforobject.go
/*
Copyright 2018 The Kubernetes 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 polymorphichelpers
import (
"fmt"
"strconv"
appsv1 "k8s.io/api/apps/v1"
appsv1beta1 "k8s.io/api/apps/v1beta1"
appsv1beta2 "k8s.io/api/apps/v1beta2"
corev1 "k8s.io/api/core/v1"
extensionsv1beta1 "k8s.io/api/extensions/v1beta1"
"k8s.io/apimachinery/pkg/runtime"
)
func protocolsForObject(object runtime.Object) (map[string]string, error) {
// TODO: replace with a swagger schema based approach (identify pod selector via schema introspection)
switch t := object.(type) {
case *corev1.ReplicationController:
return getProtocols(t.Spec.Template.Spec), nil
case *corev1.Pod:
return getProtocols(t.Spec), nil
case *corev1.Service:
return getServiceProtocols(t.Spec), nil
case *extensionsv1beta1.Deployment:
return getProtocols(t.Spec.Template.Spec), nil
case *appsv1.Deployment:
return getProtocols(t.Spec.Template.Spec), nil
case *appsv1beta2.Deployment:
return getProtocols(t.Spec.Template.Spec), nil
case *appsv1beta1.Deployment:
return getProtocols(t.Spec.Template.Spec), nil
case *extensionsv1beta1.ReplicaSet:
return getProtocols(t.Spec.Template.Spec), nil
case *appsv1.ReplicaSet:
return getProtocols(t.Spec.Template.Spec), nil
case *appsv1beta2.ReplicaSet:
return getProtocols(t.Spec.Template.Spec), nil
default:
return nil, fmt.Errorf("cannot extract protocols from %T", object)
}
}
func getProtocols(spec corev1.PodSpec) map[string]string {
result := make(map[string]string)
for _, container := range spec.Containers {
for _, port := range container.Ports {
// Empty protocol must be defaulted (TCP)
if len(port.Protocol) == 0 {
port.Protocol = corev1.ProtocolTCP
}
result[strconv.Itoa(int(port.ContainerPort))] = string(port.Protocol)
}
}
return result
}
// Extracts the protocols exposed by a service from the given service spec.
func getServiceProtocols(spec corev1.ServiceSpec) map[string]string {
result := make(map[string]string)
for _, servicePort := range spec.Ports {
// Empty protocol must be defaulted (TCP)
if len(servicePort.Protocol) == 0 {
servicePort.Protocol = corev1.ProtocolTCP
}
result[strconv.Itoa(int(servicePort.Port))] = string(servicePort.Protocol)
}
return result
}
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