client/pkg/commands/domain/describe.go

107 lines
3.4 KiB
Go

// Copyright © 2019 The Knative 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 domain
import (
"errors"
"fmt"
"io"
"strings"
"github.com/spf13/cobra"
"k8s.io/cli-runtime/pkg/genericclioptions"
"knative.dev/client/pkg/commands"
"knative.dev/client/pkg/printers"
"knative.dev/serving/pkg/apis/serving/v1beta1"
)
// NewDomainMappingDescribeCommand represents 'kn route describe' command
func NewDomainMappingDescribeCommand(p *commands.KnParams) *cobra.Command {
// For machine readable output
machineReadablePrintFlags := genericclioptions.NewPrintFlags("")
cmd := &cobra.Command{
Use: "describe NAME",
Short: "Show details of a domain mapping",
Example: `
# Show details of for the domain 'hello.example.com'
kn domain describe hello.example.com`,
ValidArgsFunction: commands.ResourceNameCompletionFunc(p),
RunE: func(cmd *cobra.Command, args []string) error {
if len(args) != 1 {
return errors.New("'kn domain describe' requires name of the domain mapping as single argument")
}
namespace, err := p.GetNamespace(cmd)
if err != nil {
return err
}
client, err := p.NewServingV1beta1Client(namespace)
if err != nil {
return err
}
domainMapping, err := client.GetDomainMapping(cmd.Context(), args[0])
if err != nil {
return err
}
if machineReadablePrintFlags.OutputFlagSpecified() {
if strings.ToLower(*machineReadablePrintFlags.OutputFormat) == "url" {
fmt.Fprintf(cmd.OutOrStdout(), "%s\n", domainMapping.Status.URL)
return nil
}
printer, err := machineReadablePrintFlags.ToPrinter()
if err != nil {
return err
}
return printer.PrintObj(domainMapping, cmd.OutOrStdout())
}
printDetails, err := cmd.Flags().GetBool("verbose")
if err != nil {
return err
}
return describe(cmd.OutOrStdout(), domainMapping, printDetails)
},
}
flags := cmd.Flags()
commands.AddNamespaceFlags(flags, false)
machineReadablePrintFlags.AddFlags(cmd)
cmd.Flag("output").Usage = fmt.Sprintf("Output format. One of: %s.", strings.Join(append(machineReadablePrintFlags.AllowedFormats(), "url"), "|"))
flags.BoolP("verbose", "v", false, "More output.")
return cmd
}
func describe(w io.Writer, domainMapping *v1beta1.DomainMapping, printDetails bool) error {
dw := printers.NewPrefixWriter(w)
commands.WriteMetadata(dw, &domainMapping.ObjectMeta, printDetails)
dw.WriteLine()
dw.WriteAttribute("URL", domainMapping.Status.URL.String())
dw.WriteLine()
ref := dw.WriteAttribute("Reference", "")
ref.WriteAttribute("APIVersion", domainMapping.Spec.Ref.APIVersion)
ref.WriteAttribute("Kind", domainMapping.Spec.Ref.Kind)
ref.WriteAttribute("Name", domainMapping.Spec.Ref.Name)
if domainMapping.Namespace != domainMapping.Spec.Ref.Namespace {
ref.WriteAttribute("Namespace", domainMapping.Spec.Ref.Namespace)
}
dw.WriteLine()
commands.WriteConditions(dw, domainMapping.Status.Conditions, printDetails)
if err := dw.Flush(); err != nil {
return err
}
return nil
}