118 lines
2.6 KiB
Go
118 lines
2.6 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: MPL-2.0
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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 OperatorRaftLogsCommand struct {
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Meta
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}
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func (c *OperatorRaftLogsCommand) Help() string {
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helpText := `
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Usage: nomad operator raft logs <path to nomad data dir>
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Display the log entries persisted in the Nomad data directory in JSON
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format.
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This command requires file system permissions to access the data directory on
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disk. The Nomad server locks access to the data directory, so this command
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cannot be run on a data directory that is being used by a running Nomad server.
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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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Raft Logs Options:
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-pretty
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By default this command outputs newline delimited JSON. If the -pretty flag
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is passed, each entry will be pretty-printed.
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`
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return strings.TrimSpace(helpText)
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}
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func (c *OperatorRaftLogsCommand) AutocompleteFlags() complete.Flags {
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return complete.Flags{}
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}
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func (c *OperatorRaftLogsCommand) AutocompleteArgs() complete.Predictor {
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return complete.PredictNothing
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}
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func (c *OperatorRaftLogsCommand) Synopsis() string {
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return "Display raft log content"
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}
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func (c *OperatorRaftLogsCommand) Name() string { return "operator raft logs" }
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func (c *OperatorRaftLogsCommand) Run(args []string) int {
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var pretty bool
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flagSet := c.Meta.FlagSet(c.Name(), FlagSetClient)
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flagSet.Usage = func() { c.Ui.Output(c.Help()) }
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flagSet.BoolVar(&pretty, "pretty", false, "")
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if err := flagSet.Parse(args); err != nil {
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return 1
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}
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args = flagSet.Args()
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if l := len(args); l != 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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raftPath, err := raftutil.FindRaftFile(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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enc := json.NewEncoder(os.Stdout)
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if pretty {
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enc.SetIndent("", " ")
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}
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logChan, warningsChan, err := raftutil.LogEntries(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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// so that the warnings don't end up mixed into the JSON stream,
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// collect them and print them once we're done
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warnings := []error{}
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DONE:
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for {
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select {
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case log := <-logChan:
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if log == nil {
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break DONE // no more logs, but break to print warnings
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}
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if err := enc.Encode(log); 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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case warning := <-warningsChan:
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warnings = append(warnings, warning)
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}
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}
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for _, warning := range warnings {
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c.Ui.Error(warning.Error())
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}
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return 0
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}
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