terraform/internal/command/state_pull.go
Sarah French 2d6eda2877
Update comments about backend interfaces, enhanced vs operations, and fix copy-paste inaccuracies (#36716)
* Fix copy-pasta

* Update some comments clarifying backend-related interfaces and "enhanced" versus "operations"

* Fix more comments that refer to types and interfaces that have moved into the backendrun package
2025-03-20 16:52:00 +00:00

98 lines
2.4 KiB
Go

// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: BUSL-1.1
package command
import (
"bytes"
"fmt"
"strings"
"github.com/hashicorp/terraform/internal/states/statefile"
"github.com/hashicorp/terraform/internal/states/statemgr"
)
// StatePullCommand is a Command implementation that allows downloading
// and outputting state information from remote state.
type StatePullCommand struct {
Meta
StateMeta
}
func (c *StatePullCommand) Run(args []string) int {
args = c.Meta.process(args)
cmdFlags := c.Meta.defaultFlagSet("state pull")
if err := cmdFlags.Parse(args); err != nil {
c.Ui.Error(fmt.Sprintf("Error parsing command-line flags: %s\n", err.Error()))
return 1
}
if diags := c.Meta.checkRequiredVersion(); diags != nil {
c.showDiagnostics(diags)
return 1
}
// Load the backend
b, backendDiags := c.Backend(nil)
if backendDiags.HasErrors() {
c.showDiagnostics(backendDiags)
return 1
}
// This is a read-only command
c.ignoreRemoteVersionConflict(b)
// Get the state manager for the current workspace
env, err := c.Workspace()
if err != nil {
c.Ui.Error(fmt.Sprintf("Error selecting workspace: %s", err))
return 1
}
stateMgr, err := b.StateMgr(env)
if err != nil {
c.Ui.Error(fmt.Sprintf(errStateLoadingState, err))
return 1
}
if err := stateMgr.RefreshState(); err != nil {
c.Ui.Error(fmt.Sprintf("Failed to refresh state: %s", err))
return 1
}
// Get a statefile object representing the latest snapshot
stateFile := statemgr.Export(stateMgr)
if stateFile != nil { // we produce no output if the statefile is nil
var buf bytes.Buffer
err = statefile.Write(stateFile, &buf)
if err != nil {
c.Ui.Error(fmt.Sprintf("Failed to write state: %s", err))
return 1
}
c.Ui.Output(buf.String())
}
return 0
}
func (c *StatePullCommand) Help() string {
helpText := `
Usage: terraform [global options] state pull [options]
Pull the state from its location, upgrade the local copy, and output it
to stdout.
This command "pulls" the current state and outputs it to stdout.
As part of this process, Terraform will upgrade the state format of the
local copy to the current version.
The primary use of this is for state stored remotely. This command
will still work with local state but is less useful for this.
`
return strings.TrimSpace(helpText)
}
func (c *StatePullCommand) Synopsis() string {
return "Pull current state and output to stdout"
}