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endpoint_config.go
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endpoint_config.go
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// Copyright 2017-2019 Authors of Cilium
//
// 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 cmd
import (
"fmt"
"os"
"github.com/cilium/cilium/pkg/command"
endpointid "github.com/cilium/cilium/pkg/endpoint/id"
"github.com/cilium/cilium/pkg/option"
"github.com/spf13/cobra"
)
var listOptions bool
// endpointConfigCmd represents the endpoint_config command
var endpointConfigCmd = &cobra.Command{
Use: "config <endpoint id> [<option>=(enable|disable) ...]",
Short: "View & modify endpoint configuration",
Example: "endpoint config 5421 DropNotification=false TraceNotification=false",
Run: func(cmd *cobra.Command, args []string) {
if listOptions {
listEndpointOptions()
return
}
requireEndpointID(cmd, args)
configEndpoint(cmd, args)
},
}
func init() {
endpointCmd.AddCommand(endpointConfigCmd)
endpointConfigCmd.Flags().BoolVarP(&listOptions, "list-options", "", false, "List available options")
command.AddJSONOutput(endpointConfigCmd)
}
var endpointMutableOptionLibrary = option.GetEndpointMutableOptionLibrary()
func listEndpointOptions() {
for k, s := range endpointMutableOptionLibrary {
fmt.Printf("%-24s %s\n", k, s.Description)
}
}
func configEndpoint(cmd *cobra.Command, args []string) {
_, id, _ := endpointid.Parse(args[0])
cfg, err := client.EndpointConfigGet(id)
if err != nil {
Fatalf("Cannot get configuration of endpoint %s: %s\n", id, err)
}
opts := args[1:]
if len(opts) == 0 {
if command.OutputJSON() {
if err := command.PrintOutput(cfg); err != nil {
os.Exit(1)
}
return
}
dumpConfig(cfg.Immutable)
dumpConfig(cfg.Realized.Options)
return
}
// modify the configuration we fetched directly since we don't need it
modifiedOptsCfg := cfg.Realized
for k := range opts {
name, value, err := option.ParseOption(opts[k], &endpointMutableOptionLibrary)
if err != nil {
Fatalf("Cannot parse option %s: %s", opts[k], err)
}
modifiedOptsCfg.Options[name] = fmt.Sprintf("%d", value)
}
err = client.EndpointConfigPatch(id, modifiedOptsCfg)
if err != nil {
Fatalf("Cannot update endpoint %s: %s", id, err)
}
fmt.Printf("Endpoint %s configuration updated successfully\n", id)
}