terraform/command/workspace_delete.go

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package command
import (
"context"
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"fmt"
"strings"
"time"
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"github.com/hashicorp/terraform/command/clistate"
"github.com/hashicorp/terraform/tfdiags"
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"github.com/mitchellh/cli"
"github.com/posener/complete"
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)
type WorkspaceDeleteCommand struct {
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Meta
LegacyName bool
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}
func (c *WorkspaceDeleteCommand) Run(args []string) int {
args = c.Meta.process(args)
envCommandShowWarning(c.Ui, c.LegacyName)
var force bool
var stateLock bool
var stateLockTimeout time.Duration
cmdFlags := c.Meta.defaultFlagSet("workspace delete")
cmdFlags.BoolVar(&force, "force", false, "force removal of a non-empty workspace")
cmdFlags.BoolVar(&stateLock, "lock", true, "lock state")
cmdFlags.DurationVar(&stateLockTimeout, "lock-timeout", 0, "lock timeout")
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cmdFlags.Usage = func() { c.Ui.Error(c.Help()) }
if err := cmdFlags.Parse(args); err != nil {
c.Ui.Error(fmt.Sprintf("Error parsing command-line flags: %s\n", err.Error()))
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return 1
}
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args = cmdFlags.Args()
if len(args) == 0 {
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c.Ui.Error("expected NAME.\n")
return cli.RunResultHelp
}
configPath, err := ModulePath(args[1:])
if err != nil {
c.Ui.Error(err.Error())
return 1
}
var diags tfdiags.Diagnostics
backendConfig, backendDiags := c.loadBackendConfig(configPath)
diags = diags.Append(backendDiags)
if diags.HasErrors() {
c.showDiagnostics(diags)
return 1
}
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// Load the backend
b, backendDiags := c.Backend(&BackendOpts{
Config: backendConfig,
})
diags = diags.Append(backendDiags)
if backendDiags.HasErrors() {
c.showDiagnostics(diags)
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return 1
}
workspaces, err := b.Workspaces()
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if err != nil {
c.Ui.Error(err.Error())
return 1
}
workspace := args[0]
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exists := false
for _, ws := range workspaces {
if workspace == ws {
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exists = true
break
}
}
if !exists {
c.Ui.Error(fmt.Sprintf(strings.TrimSpace(envDoesNotExist), workspace))
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return 1
}
currentWorkspace, err := c.Workspace()
if err != nil {
c.Ui.Error(fmt.Sprintf("Error selecting workspace: %s", err))
return 1
}
if workspace == currentWorkspace {
c.Ui.Error(fmt.Sprintf(strings.TrimSpace(envDelCurrent), workspace))
return 1
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}
// we need the actual state to see if it's empty
stateMgr, err := b.StateMgr(workspace)
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if err != nil {
c.Ui.Error(err.Error())
return 1
}
var stateLocker clistate.Locker
if stateLock {
stateLocker = clistate.NewLocker(context.Background(), stateLockTimeout, c.Ui, c.Colorize())
if err := stateLocker.Lock(stateMgr, "workspace_delete"); err != nil {
c.Ui.Error(fmt.Sprintf("Error locking state: %s", err))
return 1
}
} else {
stateLocker = clistate.NewNoopLocker()
}
if err := stateMgr.RefreshState(); err != nil {
// We need to release the lock before exit
stateLocker.Unlock(nil)
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c.Ui.Error(err.Error())
return 1
}
hasResources := stateMgr.State().HasResources()
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if hasResources && !force {
// We need to release the lock before exit
stateLocker.Unlock(nil)
c.Ui.Error(fmt.Sprintf(strings.TrimSpace(envNotEmpty), workspace))
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return 1
}
// We need to release the lock just before deleting the state, in case
// the backend can't remove the resource while holding the lock. This
// is currently true for Windows local files.
//
// TODO: While there is little safety in locking while deleting the
// state, it might be nice to be able to coordinate processes around
// state deletion, i.e. in a CI environment. Adding Delete() as a
// required method of States would allow the removal of the resource to
// be delegated from the Backend to the State itself.
stateLocker.Unlock(nil)
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err = b.DeleteWorkspace(workspace)
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if err != nil {
c.Ui.Error(err.Error())
return 1
}
c.Ui.Output(
c.Colorize().Color(
fmt.Sprintf(envDeleted, workspace),
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),
)
if hasResources {
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c.Ui.Output(
c.Colorize().Color(
fmt.Sprintf(envWarnNotEmpty, workspace),
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),
)
}
return 0
}
func (c *WorkspaceDeleteCommand) AutocompleteArgs() complete.Predictor {
return completePredictSequence{
complete.PredictNothing, // the "select" subcommand itself (already matched)
c.completePredictWorkspaceName(),
complete.PredictDirs(""),
}
}
func (c *WorkspaceDeleteCommand) AutocompleteFlags() complete.Flags {
return complete.Flags{
"-force": complete.PredictNothing,
}
}
func (c *WorkspaceDeleteCommand) Help() string {
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helpText := `
Usage: terraform workspace delete [OPTIONS] NAME [DIR]
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Delete a Terraform workspace
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Options:
-force remove a non-empty workspace.
-lock=true Lock the state file when locking is supported.
-lock-timeout=0s Duration to retry a state lock.
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`
return strings.TrimSpace(helpText)
}
func (c *WorkspaceDeleteCommand) Synopsis() string {
return "Delete a workspace"
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}