96 lines
2.2 KiB
Go
96 lines
2.2 KiB
Go
// SPDX-License-Identifier: Apache-2.0
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// Copyright Authors of K9s
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package render
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import (
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"fmt"
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"strconv"
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"strings"
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"github.com/derailed/k9s/internal/client"
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"github.com/derailed/k9s/internal/model1"
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v1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
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"k8s.io/apimachinery/pkg/runtime"
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)
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// Endpoints renders a K8s Endpoints to screen.
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type Endpoints struct {
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Base
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}
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// Header returns a header row.
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func (Endpoints) Header(ns string) model1.Header {
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return model1.Header{
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model1.HeaderColumn{Name: "NAMESPACE"},
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model1.HeaderColumn{Name: "NAME"},
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model1.HeaderColumn{Name: "ENDPOINTS"},
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model1.HeaderColumn{Name: "AGE", Time: true},
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}
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}
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// Render renders a K8s resource to screen.
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func (e Endpoints) Render(o interface{}, ns string, r *model1.Row) error {
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raw, ok := o.(*unstructured.Unstructured)
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if !ok {
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return fmt.Errorf("expected Endpoints, but got %T", o)
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}
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var ep v1.Endpoints
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err := runtime.DefaultUnstructuredConverter.FromUnstructured(raw.Object, &ep)
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if err != nil {
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return err
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}
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r.ID = client.MetaFQN(ep.ObjectMeta)
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r.Fields = make(model1.Fields, 0, len(e.Header(ns)))
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r.Fields = model1.Fields{
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ep.Namespace,
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ep.Name,
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missing(toEPs(ep.Subsets)),
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ToAge(ep.GetCreationTimestamp()),
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}
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return nil
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}
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// ----------------------------------------------------------------------------
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// Helpers...
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func toEPs(ss []v1.EndpointSubset) string {
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aa := make([]string, 0, len(ss))
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for _, s := range ss {
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pp := make([]string, len(s.Ports))
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portsToStrs(s.Ports, pp)
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a := make([]string, len(s.Addresses))
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processIPs(a, pp, s.Addresses)
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aa = append(aa, strings.Join(a, ","))
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}
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return strings.Join(aa, ",")
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}
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func portsToStrs(pp []v1.EndpointPort, ss []string) {
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for i := 0; i < len(pp); i++ {
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ss[i] = strconv.Itoa(int(pp[i].Port))
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}
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}
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func processIPs(aa []string, pp []string, addrs []v1.EndpointAddress) {
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const maxIPs = 3
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var i int
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for _, a := range addrs {
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if len(a.IP) == 0 {
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continue
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}
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if len(pp) == 0 {
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aa[i], i = a.IP, i+1
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continue
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}
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if len(pp) > maxIPs {
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aa[i], i = a.IP+":"+strings.Join(pp[:maxIPs], ",")+"...", i+1
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} else {
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aa[i], i = a.IP+":"+strings.Join(pp, ","), i+1
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}
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}
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}
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