github.com/fafucoder/cilium@v1.6.11/cilium/cmd/endpoint_labels.go (about)

     1  // Copyright 2017 Authors of Cilium
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package cmd
    16  
    17  import (
    18  	"fmt"
    19  	"os"
    20  	"text/tabwriter"
    21  
    22  	"github.com/cilium/cilium/pkg/color"
    23  	endpointid "github.com/cilium/cilium/pkg/endpoint/id"
    24  	"github.com/cilium/cilium/pkg/labels"
    25  	"github.com/cilium/cilium/pkg/labels/model"
    26  	"github.com/cilium/cilium/pkg/logging/logfields"
    27  
    28  	"github.com/spf13/cobra"
    29  )
    30  
    31  var (
    32  	toAdd    []string
    33  	toDelete []string
    34  )
    35  
    36  // endpointLabelsCmd represents the endpoint_labels command
    37  var endpointLabelsCmd = &cobra.Command{
    38  	Use:    "labels",
    39  	Short:  "Manage label configuration of endpoint",
    40  	PreRun: requireEndpointID,
    41  	Run: func(cmd *cobra.Command, args []string) {
    42  		_, id, _ := endpointid.Parse(args[0])
    43  		addLabels := labels.NewLabelsFromModel(toAdd).GetModel()
    44  
    45  		deleteLabels := labels.NewLabelsFromModel(toDelete).GetModel()
    46  
    47  		if len(addLabels) > 0 || len(deleteLabels) > 0 {
    48  			if err := client.EndpointLabelsPatch(id, addLabels, deleteLabels); err != nil {
    49  				Fatalf("Cannot modifying labels %s", err)
    50  			}
    51  		}
    52  
    53  		lbls, err := client.EndpointLabelsGet(id)
    54  		switch {
    55  		case err != nil:
    56  			Fatalf("Cannot get endpoint labels: %s", err)
    57  		case lbls == nil || lbls.Status == nil:
    58  			Fatalf("Cannot get endpoint labels: empty response")
    59  		default:
    60  			printEndpointLabels(model.NewOplabelsFromModel(lbls.Status))
    61  		}
    62  	},
    63  }
    64  
    65  func init() {
    66  	endpointCmd.AddCommand(endpointLabelsCmd)
    67  	endpointLabelsCmd.Flags().StringSliceVarP(&toAdd, "add", "a", []string{}, "Add/enable labels")
    68  	endpointLabelsCmd.Flags().StringSliceVarP(&toDelete, "delete", "d", []string{}, "Delete/disable labels")
    69  }
    70  
    71  // printEndpointLabels pretty prints labels with tabs
    72  func printEndpointLabels(lbls *labels.OpLabels) {
    73  	log.WithField(logfields.Labels, logfields.Repr(*lbls)).Debug("All Labels")
    74  	w := tabwriter.NewWriter(os.Stdout, 2, 0, 3, ' ', 0)
    75  
    76  	for _, v := range lbls.IdentityLabels() {
    77  		text := color.Green("Enabled")
    78  		fmt.Fprintf(w, "%s\t%s\n", v, text)
    79  	}
    80  
    81  	for _, v := range lbls.Disabled {
    82  		text := color.Red("Disabled")
    83  		fmt.Fprintf(w, "%s\t%s\n", v, text)
    84  	}
    85  	w.Flush()
    86  }