forked from tektoncd/cli
/
list.go
152 lines (127 loc) · 4.01 KB
/
list.go
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// Copyright © 2019 The Tekton 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 eventlistener
import (
"errors"
"fmt"
"text/tabwriter"
"github.com/spf13/cobra"
"github.com/tektoncd/cli/pkg/cli"
"github.com/tektoncd/cli/pkg/eventlistener"
"github.com/tektoncd/cli/pkg/formatted"
"github.com/tektoncd/cli/pkg/printer"
"github.com/tektoncd/triggers/pkg/apis/triggers/v1beta1"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
cliopts "k8s.io/cli-runtime/pkg/genericclioptions"
)
const (
emptyMsg = "No eventlisteners found"
)
type listOptions struct {
AllNamespaces bool
NoHeaders bool
}
func listCommand(p cli.Params) *cobra.Command {
opts := &listOptions{}
f := cliopts.NewPrintFlags("list")
eg := `List all EventListeners in namespace 'bar':
tkn eventlistener list -n bar
or
tkn el ls -n bar
`
c := &cobra.Command{
Use: "list",
Aliases: []string{"ls"},
Short: "Lists EventListeners in a namespace",
Annotations: map[string]string{
"commandType": "main",
},
Example: eg,
RunE: func(cmd *cobra.Command, args []string) error {
cs, err := p.Clients()
if err != nil {
return err
}
namespace := p.Namespace()
if opts.AllNamespaces {
namespace = ""
}
els, err := eventlistener.List(cs, metav1.ListOptions{}, namespace)
if err != nil {
if opts.AllNamespaces {
return fmt.Errorf("failed to list EventListeners from all namespaces: %v", err)
}
return fmt.Errorf("failed to list EventListeners from %s namespace: %v", namespace, err)
}
output, err := cmd.LocalFlags().GetString("output")
if err != nil {
return errors.New(`output option not set properly \n`)
}
stream := &cli.Stream{
Out: cmd.OutOrStdout(),
Err: cmd.OutOrStderr(),
}
if output != "" {
return printer.PrintObject(stream.Out, els, f)
}
if err = printFormatted(stream, els, p, opts.AllNamespaces, opts.NoHeaders); err != nil {
return errors.New(`failed to print EventListeners`)
}
return nil
},
}
f.AddFlags(c)
c.Flags().BoolVarP(&opts.AllNamespaces, "all-namespaces", "A", opts.AllNamespaces, "list EventListeners from all namespaces")
c.Flags().BoolVar(&opts.NoHeaders, "no-headers", opts.NoHeaders, "do not print column headers with output (default print column headers with output)")
return c
}
func printFormatted(s *cli.Stream, els *v1beta1.EventListenerList, p cli.Params, allNamespaces bool, noHeaders bool) error {
if len(els.Items) == 0 {
fmt.Fprintln(s.Err, emptyMsg)
return nil
}
headers := "NAME\tAGE\tURL\tAVAILABLE"
if allNamespaces {
headers = "NAMESPACE\t" + headers
}
w := tabwriter.NewWriter(s.Out, 0, 5, 3, ' ', tabwriter.TabIndent)
if !noHeaders {
fmt.Fprintln(w, headers)
}
eventListeners := els.Items
for idx := range eventListeners {
status := corev1.ConditionStatus("---")
if len(eventListeners[idx].Status.Conditions) > 0 && len(eventListeners[idx].Status.Conditions[0].Status) > 0 {
status = eventListeners[idx].Status.Conditions[0].Status
}
if allNamespaces {
fmt.Fprintf(w, "%s\t%s\t%s\t%s\t%s\n",
eventListeners[idx].Namespace,
eventListeners[idx].Name,
formatted.Age(&eventListeners[idx].CreationTimestamp, p.Time()),
formatted.FormatAddress(getURL(eventListeners[idx])),
status,
)
} else {
fmt.Fprintf(w, "%s\t%s\t%s\t%s\n",
eventListeners[idx].Name,
formatted.Age(&eventListeners[idx].CreationTimestamp, p.Time()),
formatted.FormatAddress(getURL(eventListeners[idx])),
status,
)
}
}
return w.Flush()
}