terraform/command/env_command.go

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package command
import (
"fmt"
"strings"
"github.com/hashicorp/terraform/backend"
"github.com/mitchellh/cli"
)
// EnvCommand is a Command Implementation that manipulates local state
// environments.
type EnvCommand struct {
Meta
}
func (c *EnvCommand) Run(args []string) int {
args = c.Meta.process(args, true)
cmdFlags := c.Meta.flagSet("env")
cmdFlags.Usage = func() { c.Ui.Error(c.Help()) }
if err := cmdFlags.Parse(args); err != nil {
return 1
}
args = cmdFlags.Args()
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if len(args) > 0 {
c.Ui.Error("0 arguments expected.\n")
return cli.RunResultHelp
}
// Load the backend
b, err := c.Backend(nil)
if err != nil {
c.Ui.Error(fmt.Sprintf("Failed to load backend: %s", err))
return 1
}
multi, ok := b.(backend.MultiState)
if !ok {
c.Ui.Error(envNotSupported)
return 1
}
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_, current, err := multi.States()
if err != nil {
c.Ui.Error(err.Error())
return 1
}
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c.Ui.Output(fmt.Sprintf("Current environment is %q\n", current))
c.Ui.Output(c.Help())
return 0
}
func (c *EnvCommand) Help() string {
helpText := `
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Usage: terraform env
Create, change and delete Terraform environments.
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Subcommands:
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list List environments.
select Select an environment.
new Create a new environment.
delete Delete an existing environment.
`
return strings.TrimSpace(helpText)
}
func (c *EnvCommand) Synopsis() string {
return "Environment management"
}
const (
envNotSupported = `Backend does not support environments`
envExists = `Environment %q already exists`
envDoesNotExist = `Environment %q doesn't exist!
You can create this environment with the "-new" option.`
envChanged = `[reset][green]Switched to environment %q!`
envCreated = `[reset][green]Created environment %q!`
envDeleted = `[reset][green]Deleted environment %q!`
envNotEmpty = `Environment %[1]q is not empty!
Deleting %[1]q can result in dangling resources: resources that
exist but are no longer manageable by Terraform. Please destroy
these resources first. If you want to delete this environment
anyways and risk dangling resources, use the '-force' flag.
`
envWarnNotEmpty = `[reset][yellow]WARNING: %q was non-empty.
The resources managed by the deleted environment may still exist,
but are no longer manageable by Terraform since the state has
been deleted.
`
)