2016-11-14 00:18:18 -06:00
|
|
|
package command
|
|
|
|
|
|
|
|
import (
|
|
|
|
"bufio"
|
|
|
|
"fmt"
|
|
|
|
"strings"
|
|
|
|
|
2017-01-18 22:50:45 -06:00
|
|
|
"github.com/hashicorp/terraform/backend"
|
2017-05-01 16:47:53 -05:00
|
|
|
"github.com/hashicorp/terraform/config"
|
2016-11-14 02:32:01 -06:00
|
|
|
"github.com/hashicorp/terraform/helper/wrappedstreams"
|
2016-11-14 00:18:18 -06:00
|
|
|
"github.com/hashicorp/terraform/repl"
|
|
|
|
|
|
|
|
"github.com/mitchellh/cli"
|
|
|
|
)
|
|
|
|
|
|
|
|
// ConsoleCommand is a Command implementation that applies a Terraform
|
|
|
|
// configuration and actually builds or changes infrastructure.
|
|
|
|
type ConsoleCommand struct {
|
|
|
|
Meta
|
|
|
|
}
|
|
|
|
|
|
|
|
func (c *ConsoleCommand) Run(args []string) int {
|
2017-03-07 22:09:48 -06:00
|
|
|
args, err := c.Meta.process(args, true)
|
|
|
|
if err != nil {
|
|
|
|
return 1
|
|
|
|
}
|
|
|
|
|
2016-11-14 00:18:18 -06:00
|
|
|
cmdFlags := c.Meta.flagSet("console")
|
|
|
|
cmdFlags.StringVar(&c.Meta.statePath, "state", DefaultStateFilename, "path")
|
|
|
|
cmdFlags.Usage = func() { c.Ui.Error(c.Help()) }
|
|
|
|
if err := cmdFlags.Parse(args); err != nil {
|
|
|
|
return 1
|
|
|
|
}
|
|
|
|
|
2017-01-18 22:50:45 -06:00
|
|
|
configPath, err := ModulePath(cmdFlags.Args())
|
2016-11-14 00:18:18 -06:00
|
|
|
if err != nil {
|
2017-01-18 22:50:45 -06:00
|
|
|
c.Ui.Error(err.Error())
|
|
|
|
return 1
|
|
|
|
}
|
|
|
|
|
|
|
|
// Load the module
|
|
|
|
mod, err := c.Module(configPath)
|
|
|
|
if err != nil {
|
|
|
|
c.Ui.Error(fmt.Sprintf("Failed to load root config module: %s", err))
|
2016-11-14 00:18:18 -06:00
|
|
|
return 1
|
|
|
|
}
|
|
|
|
|
2017-05-01 16:47:53 -05:00
|
|
|
var conf *config.Config
|
|
|
|
if mod != nil {
|
|
|
|
conf = mod.Config()
|
|
|
|
}
|
|
|
|
|
2017-01-18 22:50:45 -06:00
|
|
|
// Load the backend
|
2017-05-01 16:47:53 -05:00
|
|
|
b, err := c.Backend(&BackendOpts{
|
|
|
|
Config: conf,
|
|
|
|
})
|
|
|
|
|
2017-01-18 22:50:45 -06:00
|
|
|
if err != nil {
|
|
|
|
c.Ui.Error(fmt.Sprintf("Failed to load backend: %s", err))
|
2016-11-14 00:18:18 -06:00
|
|
|
return 1
|
|
|
|
}
|
|
|
|
|
2017-01-18 22:50:45 -06:00
|
|
|
// We require a local backend
|
|
|
|
local, ok := b.(backend.Local)
|
|
|
|
if !ok {
|
|
|
|
c.Ui.Error(ErrUnsupportedLocalOp)
|
|
|
|
return 1
|
|
|
|
}
|
|
|
|
|
|
|
|
// Build the operation
|
|
|
|
opReq := c.Operation()
|
|
|
|
opReq.Module = mod
|
|
|
|
|
|
|
|
// Get the context
|
|
|
|
ctx, _, err := local.Context(opReq)
|
2016-11-14 00:18:18 -06:00
|
|
|
if err != nil {
|
|
|
|
c.Ui.Error(err.Error())
|
|
|
|
return 1
|
|
|
|
}
|
|
|
|
|
|
|
|
// Setup the UI so we can output directly to stdout
|
|
|
|
ui := &cli.BasicUi{
|
2016-11-14 02:32:01 -06:00
|
|
|
Writer: wrappedstreams.Stdout(),
|
|
|
|
ErrorWriter: wrappedstreams.Stderr(),
|
2016-11-14 00:18:18 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
// IO Loop
|
|
|
|
session := &repl.Session{
|
|
|
|
Interpolater: ctx.Interpolater(),
|
|
|
|
}
|
|
|
|
|
|
|
|
// Determine if stdin is a pipe. If so, we evaluate directly.
|
|
|
|
if c.StdinPiped() {
|
|
|
|
return c.modePiped(session, ui)
|
|
|
|
}
|
|
|
|
|
|
|
|
return c.modeInteractive(session, ui)
|
|
|
|
}
|
|
|
|
|
|
|
|
func (c *ConsoleCommand) modePiped(session *repl.Session, ui cli.Ui) int {
|
|
|
|
var lastResult string
|
2016-11-14 02:32:01 -06:00
|
|
|
scanner := bufio.NewScanner(wrappedstreams.Stdin())
|
2016-11-14 00:18:18 -06:00
|
|
|
for scanner.Scan() {
|
|
|
|
// Handle it. If there is an error exit immediately
|
|
|
|
result, err := session.Handle(strings.TrimSpace(scanner.Text()))
|
|
|
|
if err != nil {
|
|
|
|
ui.Error(err.Error())
|
|
|
|
return 1
|
|
|
|
}
|
|
|
|
|
|
|
|
// Store the last result
|
|
|
|
lastResult = result
|
|
|
|
}
|
|
|
|
|
|
|
|
// Output the final result
|
|
|
|
ui.Output(lastResult)
|
|
|
|
|
|
|
|
return 0
|
|
|
|
}
|
|
|
|
|
|
|
|
func (c *ConsoleCommand) Help() string {
|
|
|
|
helpText := `
|
|
|
|
Usage: terraform console [options] [DIR]
|
|
|
|
|
|
|
|
Starts an interactive console for experimenting with Terraform
|
|
|
|
interpolations.
|
|
|
|
|
|
|
|
This will open an interactive console that you can use to type
|
|
|
|
interpolations into and inspect their values. This command loads the
|
|
|
|
current state. This lets you explore and test interpolations before
|
|
|
|
using them in future configurations.
|
|
|
|
|
|
|
|
This command will never modify your state.
|
|
|
|
|
|
|
|
DIR can be set to a directory with a Terraform state to load. By
|
|
|
|
default, this will default to the current working directory.
|
|
|
|
|
|
|
|
Options:
|
|
|
|
|
|
|
|
-state=path Path to read state. Defaults to "terraform.tfstate"
|
|
|
|
|
|
|
|
-var 'foo=bar' Set a variable in the Terraform configuration. This
|
|
|
|
flag can be set multiple times.
|
|
|
|
|
|
|
|
-var-file=foo Set variables in the Terraform configuration from
|
2017-06-21 20:22:07 -05:00
|
|
|
a file. If "terraform.tfvars" or any ".auto.tfvars"
|
|
|
|
files are present, they will be automatically loaded.
|
2016-11-14 00:18:18 -06:00
|
|
|
|
|
|
|
|
|
|
|
`
|
|
|
|
return strings.TrimSpace(helpText)
|
|
|
|
}
|
|
|
|
|
|
|
|
func (c *ConsoleCommand) Synopsis() string {
|
|
|
|
return "Interactive console for Terraform interpolations"
|
|
|
|
}
|