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a49711b8bf
This patch refactors the commands that use the mitchellh/cli library to populate the command line flag set in both the Run() and the Help() method. Earlier versions of the mitchellh/cli library relied on the Run() method to populuate the flagset for generating the usage screen. This has changed in later versions and was previously solved with a small monkey patch to the library to restore the old behavior. However, this makes upgrading the library difficult since the patch has to be restored every time. This patch addresses this by moving the command line flags into an initFlags() method where appropriate and also moving all variables for the flags from the Run() method into the command itself. Fixes #3536
85 lines
1.8 KiB
Go
85 lines
1.8 KiB
Go
package command
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import (
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"bytes"
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"fmt"
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"os"
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"text/tabwriter"
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"github.com/hashicorp/consul/snapshot"
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)
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// SnapshotInspectCommand is a Command implementation that is used to display
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// metadata about a snapshot file
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type SnapshotInspectCommand struct {
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BaseCommand
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}
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func (c *SnapshotInspectCommand) Help() string {
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c.InitFlagSet()
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return c.HelpCommand(`
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Usage: consul snapshot inspect [options] FILE
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Displays information about a snapshot file on disk.
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To inspect the file "backup.snap":
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$ consul snapshot inspect backup.snap
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For a full list of options and examples, please see the Consul documentation.
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`)
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}
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func (c *SnapshotInspectCommand) Run(args []string) int {
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c.InitFlagSet()
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if err := c.FlagSet.Parse(args); err != nil {
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return 1
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}
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var file string
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args = c.FlagSet.Args()
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switch len(args) {
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case 0:
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c.UI.Error("Missing FILE argument")
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return 1
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case 1:
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file = args[0]
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default:
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c.UI.Error(fmt.Sprintf("Too many arguments (expected 1, got %d)", len(args)))
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return 1
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}
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// Open the file.
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f, err := os.Open(file)
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if err != nil {
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c.UI.Error(fmt.Sprintf("Error opening snapshot file: %s", err))
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return 1
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}
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defer f.Close()
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meta, err := snapshot.Verify(f)
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if err != nil {
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c.UI.Error(fmt.Sprintf("Error verifying snapshot: %s", err))
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}
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var b bytes.Buffer
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tw := tabwriter.NewWriter(&b, 0, 2, 6, ' ', 0)
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fmt.Fprintf(tw, "ID\t%s\n", meta.ID)
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fmt.Fprintf(tw, "Size\t%d\n", meta.Size)
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fmt.Fprintf(tw, "Index\t%d\n", meta.Index)
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fmt.Fprintf(tw, "Term\t%d\n", meta.Term)
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fmt.Fprintf(tw, "Version\t%d\n", meta.Version)
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if err = tw.Flush(); err != nil {
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c.UI.Error(fmt.Sprintf("Error rendering snapshot info: %s", err))
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}
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c.UI.Info(b.String())
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return 0
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}
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func (c *SnapshotInspectCommand) Synopsis() string {
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return "Displays information about a Consul snapshot file"
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}
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