mirror of https://github.com/knative/client.git
127 lines
3.6 KiB
Go
127 lines
3.6 KiB
Go
// Copyright © 2019 The Knative Authors
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//
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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 route
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import (
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"errors"
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"fmt"
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"io"
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"github.com/spf13/cobra"
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"k8s.io/cli-runtime/pkg/genericclioptions"
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servingv1 "knative.dev/serving/pkg/apis/serving/v1"
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"knative.dev/client/pkg/kn/commands"
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"knative.dev/client/pkg/printers"
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)
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// NewRouteDescribeCommand represents 'kn route describe' command
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func NewRouteDescribeCommand(p *commands.KnParams) *cobra.Command {
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// For machine readable output
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machineReadablePrintFlags := genericclioptions.NewPrintFlags("")
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command := &cobra.Command{
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Use: "describe NAME",
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Short: "Show details of a route",
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RunE: func(cmd *cobra.Command, args []string) error {
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if len(args) != 1 {
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return errors.New("'kn route describe' requires name of the route as single argument")
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}
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namespace, err := p.GetNamespace(cmd)
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if err != nil {
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return err
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}
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client, err := p.NewServingClient(namespace)
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if err != nil {
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return err
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}
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route, err := client.GetRoute(args[0])
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if err != nil {
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return err
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}
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if machineReadablePrintFlags.OutputFlagSpecified() {
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printer, err := machineReadablePrintFlags.ToPrinter()
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if err != nil {
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return err
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}
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return printer.PrintObj(route, cmd.OutOrStdout())
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}
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printDetails, err := cmd.Flags().GetBool("verbose")
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if err != nil {
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return err
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}
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return describe(cmd.OutOrStdout(), route, printDetails)
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},
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}
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flags := command.Flags()
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commands.AddNamespaceFlags(flags, false)
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machineReadablePrintFlags.AddFlags(command)
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flags.BoolP("verbose", "v", false, "More output.")
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return command
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}
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func describe(w io.Writer, route *servingv1.Route, printDetails bool) error {
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dw := printers.NewPrefixWriter(w)
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commands.WriteMetadata(dw, &route.ObjectMeta, printDetails)
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dw.WriteAttribute("URL", route.Status.URL.String())
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writeService(dw, route, printDetails)
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dw.WriteLine()
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writeTraffic(dw, route)
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dw.WriteLine()
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commands.WriteConditions(dw, route.Status.Conditions, printDetails)
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if err := dw.Flush(); err != nil {
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return err
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}
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return nil
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}
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func writeService(dw printers.PrefixWriter, route *servingv1.Route, printDetails bool) {
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svcName := ""
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for _, owner := range route.ObjectMeta.OwnerReferences {
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if owner.Kind == "Service" {
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svcName = owner.Name
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if printDetails {
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svcName = fmt.Sprintf("%s (%s)", svcName, owner.APIVersion)
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}
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}
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dw.WriteAttribute("Service", svcName)
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}
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}
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func writeTraffic(dw printers.PrefixWriter, route *servingv1.Route) {
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trafficSection := dw.WriteAttribute("Traffic Targets", "")
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dw.Flush()
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for _, target := range route.Status.Traffic {
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section := trafficSection.WriteColsLn(fmt.Sprintf("%3d%%", *target.Percent), formatTarget(target))
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if target.Tag != "" {
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section.WriteAttribute("URL", target.URL.String())
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}
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}
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}
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func formatTarget(target servingv1.TrafficTarget) string {
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targetHeader := target.RevisionName
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if target.LatestRevision != nil && *target.LatestRevision {
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targetHeader = fmt.Sprintf("@latest (%s)", target.RevisionName)
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}
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if target.Tag != "" {
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targetHeader = fmt.Sprintf("%s #%s", targetHeader, target.Tag)
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}
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return targetHeader
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}
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