/
svc.go
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/
svc.go
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// SPDX-License-Identifier: Apache-2.0
// Copyright Authors of K9s
package render
import (
"fmt"
"sort"
"strconv"
"strings"
"github.com/derailed/k9s/internal/client"
"github.com/derailed/k9s/internal/model1"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime"
)
// Service renders a K8s Service to screen.
type Service struct {
Base
}
// Header returns a header row.
func (Service) Header(ns string) model1.Header {
return model1.Header{
model1.HeaderColumn{Name: "NAMESPACE"},
model1.HeaderColumn{Name: "NAME"},
model1.HeaderColumn{Name: "TYPE"},
model1.HeaderColumn{Name: "CLUSTER-IP"},
model1.HeaderColumn{Name: "EXTERNAL-IP"},
model1.HeaderColumn{Name: "SELECTOR", Wide: true},
model1.HeaderColumn{Name: "PORTS", Wide: false},
model1.HeaderColumn{Name: "LABELS", Wide: true},
model1.HeaderColumn{Name: "VALID", Wide: true},
model1.HeaderColumn{Name: "AGE", Time: true},
}
}
// Render renders a K8s resource to screen.
func (s Service) Render(o interface{}, ns string, r *model1.Row) error {
raw, ok := o.(*unstructured.Unstructured)
if !ok {
return fmt.Errorf("expected Service, but got %T", o)
}
var svc v1.Service
err := runtime.DefaultUnstructuredConverter.FromUnstructured(raw.Object, &svc)
if err != nil {
return err
}
r.ID = client.MetaFQN(svc.ObjectMeta)
r.Fields = model1.Fields{
svc.Namespace,
svc.ObjectMeta.Name,
string(svc.Spec.Type),
toIP(svc.Spec.ClusterIP),
toIPs(svc.Spec.Type, getSvcExtIPS(&svc)),
mapToStr(svc.Spec.Selector),
ToPorts(svc.Spec.Ports),
mapToStr(svc.Labels),
AsStatus(s.diagnose()),
ToAge(svc.GetCreationTimestamp()),
}
return nil
}
func (Service) diagnose() error {
return nil
}
// ----------------------------------------------------------------------------
// Helpers...
func toIP(ip string) string {
if ip == "" || ip == "None" {
return ""
}
return ip
}
func getSvcExtIPS(svc *v1.Service) []string {
results := []string{}
switch svc.Spec.Type {
case v1.ServiceTypeClusterIP:
fallthrough
case v1.ServiceTypeNodePort:
return svc.Spec.ExternalIPs
case v1.ServiceTypeLoadBalancer:
lbIps := lbIngressIP(svc.Status.LoadBalancer)
if len(svc.Spec.ExternalIPs) > 0 {
if len(lbIps) > 0 {
results = append(results, lbIps)
}
return append(results, svc.Spec.ExternalIPs...)
}
if len(lbIps) > 0 {
results = append(results, lbIps)
}
case v1.ServiceTypeExternalName:
results = append(results, svc.Spec.ExternalName)
}
return results
}
func lbIngressIP(s v1.LoadBalancerStatus) string {
ingress := s.Ingress
result := []string{}
for i := range ingress {
if len(ingress[i].IP) > 0 {
result = append(result, ingress[i].IP)
} else if len(ingress[i].Hostname) > 0 {
result = append(result, ingress[i].Hostname)
}
}
return strings.Join(result, ",")
}
func toIPs(svcType v1.ServiceType, ips []string) string {
if len(ips) == 0 {
if svcType == v1.ServiceTypeLoadBalancer {
return "<pending>"
}
return ""
}
sort.Strings(ips)
return strings.Join(ips, ",")
}
// ToPorts returns service ports as a string.
func ToPorts(pp []v1.ServicePort) string {
ports := make([]string, len(pp))
for i, p := range pp {
if len(p.Name) > 0 {
ports[i] = p.Name + ":"
}
ports[i] += strconv.Itoa(int(p.Port)) +
"►" +
strconv.Itoa(int(p.NodePort))
if p.Protocol != "TCP" {
ports[i] += "╱" + string(p.Protocol)
}
}
return strings.Join(ports, " ")
}