95 lines
2.2 KiB
Go
95 lines
2.2 KiB
Go
package command
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import (
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"fmt"
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"strings"
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"github.com/hashicorp/nomad/api"
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"github.com/posener/complete"
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"github.com/ryanuber/columnize"
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)
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type OperatorRaftListCommand struct {
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Meta
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}
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func (c *OperatorRaftListCommand) Help() string {
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helpText := `
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Usage: nomad operator raft list-peers [options]
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Displays the current Raft peer configuration.
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General Options:
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` + generalOptionsUsage() + `
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List Peers Options:
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-stale=[true|false]
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The -stale argument defaults to "false" which means the leader provides the
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result. If the cluster is in an outage state without a leader, you may need
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to set -stale to "true" to get the configuration from a non-leader server.
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`
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return strings.TrimSpace(helpText)
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}
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func (c *OperatorRaftListCommand) AutocompleteFlags() complete.Flags {
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return mergeAutocompleteFlags(c.Meta.AutocompleteFlags(FlagSetClient),
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complete.Flags{
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"-stale": complete.PredictAnything,
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})
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}
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func (c *OperatorRaftListCommand) AutocompleteArgs() complete.Predictor {
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return complete.PredictNothing
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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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var stale bool
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flags := c.Meta.FlagSet("raft", FlagSetClient)
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flags.Usage = func() { c.Ui.Output(c.Help()) }
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flags.BoolVar(&stale, "stale", false, "")
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if err := flags.Parse(args); err != nil {
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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.Meta.Client()
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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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operator := client.Operator()
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// Fetch the current configuration.
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q := &api.QueryOptions{
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AllowStale: stale,
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}
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reply, err := operator.RaftGetConfiguration(q)
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if err != nil {
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c.Ui.Error(fmt.Sprintf("Failed to retrieve raft configuration: %v", err))
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return 1
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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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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, s.RaftProtocol))
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}
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c.Ui.Output(columnize.SimpleFormat(result))
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return 0
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}
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