terraform/command/import.go

154 lines
5.0 KiB
Go

package command
import (
"fmt"
"log"
"os"
"strings"
"github.com/hashicorp/terraform/terraform"
)
// ImportCommand is a cli.Command implementation that imports resources
// into the Terraform state.
type ImportCommand struct {
Meta
}
func (c *ImportCommand) Run(args []string) int {
// Get the pwd since its our default -config flag value
pwd, err := os.Getwd()
if err != nil {
c.Ui.Error(fmt.Sprintf("Error getting pwd: %s", err))
return 1
}
var configPath string
args = c.Meta.process(args, true)
cmdFlags := c.Meta.flagSet("import")
cmdFlags.IntVar(&c.Meta.parallelism, "parallelism", 0, "parallelism")
cmdFlags.StringVar(&c.Meta.statePath, "state", DefaultStateFilename, "path")
cmdFlags.StringVar(&c.Meta.stateOutPath, "state-out", "", "path")
cmdFlags.StringVar(&c.Meta.backupPath, "backup", "", "path")
cmdFlags.StringVar(&configPath, "config", pwd, "path")
cmdFlags.StringVar(&c.Meta.provider, "provider", "", "provider")
cmdFlags.Usage = func() { c.Ui.Error(c.Help()) }
if err := cmdFlags.Parse(args); err != nil {
return 1
}
args = cmdFlags.Args()
if len(args) != 2 {
c.Ui.Error("The import command expects two arguments.")
cmdFlags.Usage()
return 1
}
// Build the context based on the arguments given
ctx, _, err := c.Context(contextOpts{
Path: configPath,
PathEmptyOk: true,
StatePath: c.Meta.statePath,
Parallelism: c.Meta.parallelism,
})
if err != nil {
c.Ui.Error(err.Error())
return 1
}
// Perform the import. Note that as you can see it is possible for this
// API to import more than one resource at once. For now, we only allow
// one while we stabilize this feature.
newState, err := ctx.Import(&terraform.ImportOpts{
Targets: []*terraform.ImportTarget{
&terraform.ImportTarget{
Addr: args[0],
ID: args[1],
Provider: c.Meta.provider,
},
},
})
if err != nil {
c.Ui.Error(fmt.Sprintf("Error importing: %s", err))
return 1
}
// Persist the final state
log.Printf("[INFO] Writing state output to: %s", c.Meta.StateOutPath())
if err := c.Meta.PersistState(newState); err != nil {
c.Ui.Error(fmt.Sprintf("Error writing state file: %s", err))
return 1
}
c.Ui.Output(c.Colorize().Color(fmt.Sprintf(
"[reset][green]\n" +
"Import success! The resources imported are shown above. These are\n" +
"now in your Terraform state. Import does not currently generate\n" +
"configuration, so you must do this next. If you do not create configuration\n" +
"for the above resources, then the next `terraform plan` will mark\n" +
"them for destruction.")))
return 0
}
func (c *ImportCommand) Help() string {
helpText := `
Usage: terraform import [options] ADDR ID
Import existing infrastructure into your Terraform state.
This will find and import the specified resource into your Terraform
state, allowing existing infrastructure to come under Terraform
management without having to be initially created by Terraform.
The ADDR specified is the address to import the resource to. Please
see the documentation online for resource addresses. The ID is a
resource-specific ID to identify that resource being imported. Please
reference the documentation for the resource type you're importing to
determine the ID syntax to use. It typically matches directly to the ID
that the provider uses.
In the current state of Terraform import, the resource is only imported
into your state file. Once it is imported, you must manually write
configuration for the new resource or Terraform will mark it for destruction.
Future versions of Terraform will expand the functionality of Terraform
import.
This command will not modify your infrastructure, but it will make
network requests to inspect parts of your infrastructure relevant to
the resource being imported.
Options:
-backup=path Path to backup the existing state file before
modifying. Defaults to the "-state-out" path with
".backup" extension. Set to "-" to disable backup.
-config=path Path to a directory of Terraform configuration files
to use to configure the provider. Defaults to pwd.
If no config files are present, they must be provided
via the input prompts or env vars.
-input=true Ask for input for variables if not directly set.
-no-color If specified, output won't contain any color.
-provider=provider Specific provider to use for import. This is used for
specifying aliases, such as "aws.eu". Defaults to the
normal provider prefix of the resource being imported.
-state=path Path to read and save state (unless state-out
is specified). Defaults to "terraform.tfstate".
-state-out=path Path to write updated state file. By default, the
"-state" path will be used.
`
return strings.TrimSpace(helpText)
}
func (c *ImportCommand) Synopsis() string {
return "Import existing infrastructure into Terraform"
}