mirror of https://github.com/status-im/consul.git
100 lines
2.1 KiB
Go
100 lines
2.1 KiB
Go
package operraftlist
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import (
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"flag"
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"fmt"
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"github.com/hashicorp/consul/api"
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"github.com/hashicorp/consul/command/flags"
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"github.com/mitchellh/cli"
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"github.com/ryanuber/columnize"
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)
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func New(ui cli.Ui) *cmd {
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c := &cmd{UI: ui}
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c.init()
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return c
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}
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type cmd struct {
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UI cli.Ui
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flags *flag.FlagSet
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http *flags.HTTPFlags
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usage string
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}
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func (c *cmd) init() {
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c.flags = flag.NewFlagSet("", flag.ContinueOnError)
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c.http = &flags.HTTPFlags{}
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flags.Merge(c.flags, c.http.ClientFlags())
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flags.Merge(c.flags, c.http.ServerFlags())
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c.usage = flags.Usage(usage, c.flags, c.http.ClientFlags(), c.http.ServerFlags())
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}
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func (c *cmd) Synopsis() string {
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return "Display the current Raft peer configuration"
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}
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func (c *cmd) Help() string {
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return c.usage
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}
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func (c *cmd) Run(args []string) int {
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if err := c.flags.Parse(args); err != nil {
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if err == flag.ErrHelp {
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return 0
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}
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c.UI.Error(fmt.Sprintf("Failed to parse args: %v", err))
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return 1
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}
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// Set up a client.
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client, err := c.http.APIClient()
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if err != nil {
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c.UI.Error(fmt.Sprintf("Error initializing client: %s", err))
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return 1
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}
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// Fetch the current configuration.
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result, err := raftListPeers(client, c.http.Stale())
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if err != nil {
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c.UI.Error(fmt.Sprintf("Error getting peers: %v", err))
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return 1
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}
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c.UI.Output(result)
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return 0
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}
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func raftListPeers(client *api.Client, stale bool) (string, error) {
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q := &api.QueryOptions{
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AllowStale: stale,
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}
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reply, err := client.Operator().RaftGetConfiguration(q)
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if err != nil {
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return "", fmt.Errorf("Failed to retrieve raft configuration: %v", err)
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}
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// Format it as a nice table.
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result := []string{"Node|ID|Address|State|Voter|RaftProtocol"}
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for _, s := range reply.Servers {
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raftProtocol := s.ProtocolVersion
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if raftProtocol == "" {
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raftProtocol = "<=1"
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}
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state := "follower"
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if s.Leader {
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state = "leader"
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}
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result = append(result, fmt.Sprintf("%s|%s|%s|%s|%v|%s",
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s.Node, s.ID, s.Address, state, s.Voter, raftProtocol))
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}
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return columnize.SimpleFormat(result), nil
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}
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const usage = `Usage: consul operator raft list-peers [options]
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Displays the current Raft peer configuration.`
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