open-consul/command/intention/list/intention_list.go

88 lines
1.7 KiB
Go

package list
import (
"flag"
"fmt"
"github.com/hashicorp/consul/command/flags"
"github.com/mitchellh/cli"
"github.com/ryanuber/columnize"
)
func New(ui cli.Ui) *cmd {
c := &cmd{UI: ui}
c.init()
return c
}
type cmd struct {
UI cli.Ui
flags *flag.FlagSet
http *flags.HTTPFlags
help string
}
func (c *cmd) init() {
c.flags = flag.NewFlagSet("", flag.ContinueOnError)
c.http = &flags.HTTPFlags{}
flags.Merge(c.flags, c.http.ClientFlags())
flags.Merge(c.flags, c.http.ServerFlags())
flags.Merge(c.flags, c.http.MultiTenancyFlags())
c.help = flags.Usage(help, c.flags)
}
func (c *cmd) Run(args []string) int {
if err := c.flags.Parse(args); err != nil {
return 1
}
client, err := c.http.APIClient()
if err != nil {
c.UI.Error(fmt.Sprintf("Error connecting to Consul agent: %s", err))
return 1
}
ixns, _, err := client.Connect().Intentions(nil)
if err != nil {
c.UI.Error(fmt.Sprintf("Failed to retrieve the intentions list: %s", err))
return 1
}
if len(ixns) == 0 {
c.UI.Error(fmt.Sprintf("There are no intentions."))
return 2
}
result := make([]string, 0, len(ixns))
header := "ID\x1fSource\x1fAction\x1fDestination\x1fPrecedence"
result = append(result, header)
for _, ixn := range ixns {
line := fmt.Sprintf("%s\x1f%s\x1f%s\x1f%s\x1f%d",
ixn.ID, ixn.SourceName, ixn.Action, ixn.DestinationName, ixn.Precedence)
result = append(result, line)
}
output := columnize.Format(result, &columnize.Config{Delim: string([]byte{0x1f})})
c.UI.Output(output)
return 0
}
func (c *cmd) Synopsis() string {
return synopsis
}
func (c *cmd) Help() string {
return c.help
}
const (
synopsis = "List intentions."
help = `
Usage: consul intention list
List all intentions.
`
)