130 lines
2.5 KiB
Go
130 lines
2.5 KiB
Go
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// 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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"fmt"
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"io"
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"os"
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"strings"
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"github.com/mitchellh/cli"
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"github.com/posener/complete"
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)
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var (
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_ cli.Command = (*OperatorRaftSnapshotSaveCommand)(nil)
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_ cli.CommandAutocomplete = (*OperatorRaftSnapshotSaveCommand)(nil)
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)
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type OperatorRaftSnapshotSaveCommand struct {
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*BaseCommand
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}
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func (c *OperatorRaftSnapshotSaveCommand) Synopsis() string {
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return "Saves a snapshot of the current state of the Raft cluster into a file"
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}
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func (c *OperatorRaftSnapshotSaveCommand) Help() string {
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helpText := `
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Usage: vault operator raft snapshot save <snapshot_file>
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Saves a snapshot of the current state of the Raft cluster into a file.
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$ vault operator raft snapshot save raft.snap
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` + c.Flags().Help()
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return strings.TrimSpace(helpText)
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}
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func (c *OperatorRaftSnapshotSaveCommand) Flags() *FlagSets {
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set := c.flagSet(FlagSetHTTP | FlagSetOutputFormat)
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return set
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}
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func (c *OperatorRaftSnapshotSaveCommand) AutocompleteArgs() complete.Predictor {
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return complete.PredictAnything
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}
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func (c *OperatorRaftSnapshotSaveCommand) AutocompleteFlags() complete.Flags {
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return c.Flags().Completions()
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}
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func (c *OperatorRaftSnapshotSaveCommand) Run(args []string) int {
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f := c.Flags()
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if err := f.Parse(args); 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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path := ""
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args = f.Args()
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switch len(args) {
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case 1:
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path = strings.TrimSpace(args[0])
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default:
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c.UI.Error(fmt.Sprintf("Incorrect arguments (expected 1, got %d)", len(args)))
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return 1
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}
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if len(path) == 0 {
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c.UI.Error("Output file name is required")
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return 1
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}
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w := &lazyOpenWriter{
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openFunc: func() (io.WriteCloser, error) {
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return os.OpenFile(path, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0o600)
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},
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}
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client, err := c.Client()
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if err != nil {
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w.Close()
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c.UI.Error(err.Error())
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return 2
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}
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err = client.Sys().RaftSnapshot(w)
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if err != nil {
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w.Close()
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c.UI.Error(fmt.Sprintf("Error taking the snapshot: %s", err))
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return 2
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}
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err = w.Close()
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if err != nil {
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c.UI.Error(fmt.Sprintf("Error taking the snapshot: %s", err))
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return 2
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}
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return 0
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}
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type lazyOpenWriter struct {
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openFunc func() (io.WriteCloser, error)
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writer io.WriteCloser
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}
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func (l *lazyOpenWriter) Write(p []byte) (n int, err error) {
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if l.writer == nil {
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var err error
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l.writer, err = l.openFunc()
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if err != nil {
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return 0, err
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}
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}
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return l.writer.Write(p)
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}
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func (l *lazyOpenWriter) Close() error {
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if l.writer != nil {
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return l.writer.Close()
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}
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return nil
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}
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