105 lines
2.2 KiB
Go
105 lines
2.2 KiB
Go
package command
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import (
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"flag"
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"fmt"
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"strings"
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"github.com/hashicorp/consul/api"
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"github.com/hashicorp/consul/command/base"
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"github.com/hashicorp/serf/serf"
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"github.com/ryanuber/columnize"
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)
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type OperatorRaftListCommand struct {
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base.Command
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}
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func (c *OperatorRaftListCommand) Help() string {
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helpText := `
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Usage: consul operator raft list-peers [options]
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Displays the current Raft peer configuration.
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` + c.Command.Help()
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return strings.TrimSpace(helpText)
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}
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func (c *OperatorRaftListCommand) Synopsis() string {
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return "Display the current Raft peer configuration"
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}
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func (c *OperatorRaftListCommand) Run(args []string) int {
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c.Command.NewFlagSet(c)
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if err := c.Command.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.Command.HTTPClient()
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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.Command.HTTPStale())
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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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}
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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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raftProtocols := make(map[string]string)
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members, err := client.Agent().Members(false)
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if err != nil {
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return "", err
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}
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for _, member := range members {
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if serf.MemberStatus(member.Status) == serf.StatusLeft {
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continue
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}
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if member.Tags["role"] != "consul" {
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continue
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}
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raftProtocols[member.Name] = member.Tags["raft_vsn"]
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}
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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 := raftProtocols[s.Node]
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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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