102 lines
2.3 KiB
Go
102 lines
2.3 KiB
Go
package command
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import (
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"encoding/json"
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"fmt"
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"os"
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"strings"
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"github.com/hashicorp/nomad/helper/raftutil"
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"github.com/posener/complete"
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)
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type OperatorRaftStateCommand struct {
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Meta
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}
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func (c *OperatorRaftStateCommand) Help() string {
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helpText := `
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Usage: nomad operator raft _state <path to nomad data dir>
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Display the server state obtained by replaying raft log entries persisted in data dir in json form.
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This is a low-level debugging tool and not subject to Nomad's usual backward
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compatibility guarantees.
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If ACLs are enabled, this command requires a management token.
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Options:
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-last-index=<last_index>
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Set the last log index to be applied, to drop spurious log entries not
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properly committed. If passed last_index is zero or negative, it's perceived
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as an offset from the last index seen in raft.
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`
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return strings.TrimSpace(helpText)
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}
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func (c *OperatorRaftStateCommand) AutocompleteFlags() complete.Flags {
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return complete.Flags{}
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}
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func (c *OperatorRaftStateCommand) AutocompleteArgs() complete.Predictor {
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return complete.PredictNothing
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}
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func (c *OperatorRaftStateCommand) Synopsis() string {
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return "Display raft server state"
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}
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func (c *OperatorRaftStateCommand) Name() string { return "operator raft _state" }
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func (c *OperatorRaftStateCommand) Run(args []string) int {
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var fLastIdx int64
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flags := c.Meta.FlagSet(c.Name(), 0)
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flags.Usage = func() { fmt.Println(c.Help()) }
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flags.Int64Var(&fLastIdx, "last-index", 0, "")
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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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args = flags.Args()
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if len(args) != 1 {
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c.Ui.Error("This command takes one argument: <path>")
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c.Ui.Error(commandErrorText(c))
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return 1
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}
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// Find raft.db folder
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raftPath, err := raftutil.FindRaftDir(args[0])
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if err != nil {
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c.Ui.Error(err.Error())
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return 1
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}
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fsm, err := raftutil.NewFSM(raftPath)
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if err != nil {
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c.Ui.Error(err.Error())
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return 1
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}
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defer fsm.Close()
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_, _, err = fsm.ApplyAll()
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if err != nil {
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c.Ui.Error(err.Error())
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return 1
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}
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state := fsm.StateAsMap()
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enc := json.NewEncoder(os.Stdout)
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enc.SetIndent("", " ")
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if err := enc.Encode(state); err != nil {
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c.Ui.Error(fmt.Sprintf("failed to encode output: %v", err))
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return 1
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}
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return 0
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}
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