156 lines
3.7 KiB
Go
156 lines
3.7 KiB
Go
package command
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import (
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"fmt"
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"os"
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"strings"
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"github.com/hashicorp/nomad/api/contexts"
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"github.com/posener/complete"
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)
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type JobRevertCommand struct {
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Meta
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}
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func (c *JobRevertCommand) Help() string {
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helpText := `
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Usage: nomad job revert [options] <job> <version>
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Revert is used to revert a job to a prior version of the job. The available
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versions to revert to can be found using "nomad job history" command.
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General Options:
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` + generalOptionsUsage() + `
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Revert Options:
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-detach
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Return immediately instead of entering monitor mode. After job revert,
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the evaluation ID will be printed to the screen, which can be used to
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examine the evaluation using the eval-status command.
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-vault-token
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The Vault token used to verify that the caller has access to the Vault
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policies i the targeted version of the job.
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-verbose
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Display full information.
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`
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return strings.TrimSpace(helpText)
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}
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func (c *JobRevertCommand) Synopsis() string {
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return "Revert to a prior version of the job"
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}
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func (c *JobRevertCommand) AutocompleteFlags() complete.Flags {
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return mergeAutocompleteFlags(c.Meta.AutocompleteFlags(FlagSetClient),
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complete.Flags{
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"-detach": complete.PredictNothing,
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"-verbose": complete.PredictNothing,
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})
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}
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func (c *JobRevertCommand) AutocompleteArgs() complete.Predictor {
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return complete.PredictFunc(func(a complete.Args) []string {
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client, err := c.Meta.Client()
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if err != nil {
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return nil
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}
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resp, _, err := client.Search().PrefixSearch(a.Last, contexts.Jobs, nil)
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if err != nil {
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return []string{}
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}
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return resp.Matches[contexts.Jobs]
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})
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}
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func (c *JobRevertCommand) Name() string { return "job revert" }
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func (c *JobRevertCommand) Run(args []string) int {
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var detach, verbose bool
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var vaultToken string
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flags := c.Meta.FlagSet(c.Name(), FlagSetClient)
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flags.Usage = func() { c.Ui.Output(c.Help()) }
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flags.BoolVar(&detach, "detach", false, "")
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flags.BoolVar(&verbose, "verbose", false, "")
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flags.StringVar(&vaultToken, "vault-token", "", "")
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if err := flags.Parse(args); err != nil {
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return 1
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}
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// Truncate the id unless full length is requested
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length := shortId
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if verbose {
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length = fullId
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}
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// Check that we got two args
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args = flags.Args()
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if l := len(args); l != 2 {
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c.Ui.Error("This command takes two arguments: <job> <version>")
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c.Ui.Error(commandErrorText(c))
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return 1
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}
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// Get the HTTP 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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// Parse the Vault token
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if vaultToken == "" {
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// Check the environment variable
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vaultToken = os.Getenv("VAULT_TOKEN")
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}
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jobID := args[0]
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revertVersion, ok, err := parseVersion(args[1])
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if !ok {
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c.Ui.Error("The job version to revert to must be specified using the -job-version flag")
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return 1
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}
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if err != nil {
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c.Ui.Error(fmt.Sprintf("Failed to parse job-version flag: %v", err))
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return 1
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}
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// Check if the job exists
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jobs, _, err := client.Jobs().PrefixList(jobID)
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if err != nil {
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c.Ui.Error(fmt.Sprintf("Error listing jobs: %s", err))
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return 1
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}
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if len(jobs) == 0 {
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c.Ui.Error(fmt.Sprintf("No job(s) with prefix or id %q found", jobID))
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return 1
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}
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if len(jobs) > 1 && strings.TrimSpace(jobID) != jobs[0].ID {
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c.Ui.Error(fmt.Sprintf("Prefix matched multiple jobs\n\n%s", createStatusListOutput(jobs)))
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return 1
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}
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// Prefix lookup matched a single job
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resp, _, err := client.Jobs().Revert(jobs[0].ID, revertVersion, nil, nil, vaultToken)
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if err != nil {
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c.Ui.Error(fmt.Sprintf("Error retrieving job versions: %s", err))
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return 1
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}
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// Nothing to do
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evalCreated := resp.EvalID != ""
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if detach || !evalCreated {
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return 0
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}
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mon := newMonitor(c.Ui, client, length)
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return mon.monitor(resp.EvalID, false)
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}
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