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state_rm.go
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state_rm.go
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package command
import (
"context"
"fmt"
"strings"
"github.com/hashicorp/terraform/addrs"
"github.com/hashicorp/terraform/command/clistate"
"github.com/hashicorp/terraform/tfdiags"
"github.com/mitchellh/cli"
)
// StateRmCommand is a Command implementation that shows a single resource.
type StateRmCommand struct {
StateMeta
}
func (c *StateRmCommand) Run(args []string) int {
args = c.Meta.process(args)
var dryRun bool
cmdFlags := c.Meta.ignoreRemoteVersionFlagSet("state rm")
cmdFlags.BoolVar(&dryRun, "dry-run", false, "dry run")
cmdFlags.StringVar(&c.backupPath, "backup", "-", "backup")
cmdFlags.BoolVar(&c.Meta.stateLock, "lock", true, "lock state")
cmdFlags.DurationVar(&c.Meta.stateLockTimeout, "lock-timeout", 0, "lock timeout")
cmdFlags.StringVar(&c.statePath, "state", "", "path")
if err := cmdFlags.Parse(args); err != nil {
c.Ui.Error(fmt.Sprintf("Error parsing command-line flags: %s\n", err.Error()))
return 1
}
args = cmdFlags.Args()
if len(args) < 1 {
c.Ui.Error("At least one address is required.\n")
return cli.RunResultHelp
}
// Get the state
stateMgr, err := c.State()
if err != nil {
c.Ui.Error(fmt.Sprintf(errStateLoadingState, err))
return 1
}
if c.stateLock {
stateLocker := clistate.NewLocker(context.Background(), c.stateLockTimeout, c.Ui, c.Colorize())
if err := stateLocker.Lock(stateMgr, "state-rm"); err != nil {
c.Ui.Error(fmt.Sprintf("Error locking state: %s", err))
return 1
}
defer stateLocker.Unlock(nil)
}
if err := stateMgr.RefreshState(); err != nil {
c.Ui.Error(fmt.Sprintf("Failed to refresh state: %s", err))
return 1
}
state := stateMgr.State()
if state == nil {
c.Ui.Error(fmt.Sprintf(errStateNotFound))
return 1
}
// This command primarily works with resource instances, though it will
// also clean up any modules and resources left empty by actions it takes.
var addrs []addrs.AbsResourceInstance
var diags tfdiags.Diagnostics
for _, addrStr := range args {
moreAddrs, moreDiags := c.lookupResourceInstanceAddr(state, true, addrStr)
addrs = append(addrs, moreAddrs...)
diags = diags.Append(moreDiags)
}
if diags.HasErrors() {
c.showDiagnostics(diags)
return 1
}
prefix := "Removed "
if dryRun {
prefix = "Would remove "
}
var isCount int
ss := state.SyncWrapper()
for _, addr := range addrs {
isCount++
c.Ui.Output(prefix + addr.String())
if !dryRun {
ss.ForgetResourceInstanceAll(addr)
ss.RemoveResourceIfEmpty(addr.ContainingResource())
}
}
if dryRun {
if isCount == 0 {
c.Ui.Output("Would have removed nothing.")
}
return 0 // This is as far as we go in dry-run mode
}
if err := stateMgr.WriteState(state); err != nil {
c.Ui.Error(fmt.Sprintf(errStateRmPersist, err))
return 1
}
if err := stateMgr.PersistState(); err != nil {
c.Ui.Error(fmt.Sprintf(errStateRmPersist, err))
return 1
}
if len(diags) > 0 && isCount != 0 {
c.showDiagnostics(diags)
}
if isCount == 0 {
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Invalid target address",
"No matching objects found. To view the available instances, use \"terraform state list\". Please modify the address to reference a specific instance.",
))
c.showDiagnostics(diags)
return 1
}
c.Ui.Output(fmt.Sprintf("Successfully removed %d resource instance(s).", isCount))
return 0
}
func (c *StateRmCommand) Help() string {
helpText := `
Usage: terraform state rm [options] ADDRESS...
Remove one or more items from the Terraform state, causing Terraform to
"forget" those items without first destroying them in the remote system.
This command removes one or more resource instances from the Terraform state
based on the addresses given. You can view and list the available instances
with "terraform state list".
If you give the address of an entire module then all of the instances in
that module and any of its child modules will be removed from the state.
If you give the address of a resource that has "count" or "for_each" set,
all of the instances of that resource will be removed from the state.
Options:
-dry-run If set, prints out what would've been removed but
doesn't actually remove anything.
-backup=PATH Path where Terraform should write the backup
state.
-lock=true Lock the state file when locking is supported.
-lock-timeout=0s Duration to retry a state lock.
-state=PATH Path to the state file to update. Defaults to the
current workspace state.
-ignore-remote-version Continue even if remote and local Terraform versions
differ. This may result in an unusable workspace, and
should be used with extreme caution.
`
return strings.TrimSpace(helpText)
}
func (c *StateRmCommand) Synopsis() string {
return "Remove instances from the state"
}
const errStateRmPersist = `Error saving the state: %s
The state was not saved. No items were removed from the persisted
state. No backup was created since no modification occurred. Please
resolve the issue above and try again.`