terraform/command/refresh.go

116 lines
2.6 KiB
Go

package command
import (
"flag"
"fmt"
"log"
"os"
"strings"
"github.com/hashicorp/terraform/config"
"github.com/hashicorp/terraform/terraform"
"github.com/mitchellh/cli"
)
// RefreshCommand is a cli.Command implementation that refreshes the state
// file.
type RefreshCommand struct {
ContextOpts *terraform.ContextOpts
Ui cli.Ui
}
func (c *RefreshCommand) Run(args []string) int {
var outPath string
statePath := "terraform.tfstate"
configPath := "."
cmdFlags := flag.NewFlagSet("refresh", flag.ContinueOnError)
cmdFlags.StringVar(&outPath, "out", "", "output path")
cmdFlags.Usage = func() { c.Ui.Error(c.Help()) }
if err := cmdFlags.Parse(args); err != nil {
return 1
}
args = cmdFlags.Args()
if len(args) != 2 {
// TODO(mitchellh): this is temporary until we can assume current
// dir for Terraform config.
c.Ui.Error("TEMPORARY: The refresh command requires two args.")
cmdFlags.Usage()
return 1
}
statePath = args[0]
configPath = args[1]
if outPath == "" {
outPath = statePath
}
// Load up the state
f, err := os.Open(statePath)
if err != nil {
c.Ui.Error(fmt.Sprintf("Error loading state: %s", err))
return 1
}
state, err := terraform.ReadState(f)
f.Close()
if err != nil {
c.Ui.Error(fmt.Sprintf("Error loading state: %s", err))
return 1
}
b, err := config.Load(configPath)
if err != nil {
c.Ui.Error(fmt.Sprintf("Error loading blueprint: %s", err))
return 1
}
c.ContextOpts.Config = b
c.ContextOpts.Hooks = append(c.ContextOpts.Hooks, &UiHook{Ui: c.Ui})
ctx := terraform.NewContext(c.ContextOpts)
if !validateContext(ctx, c.Ui) {
return 1
}
state, err = ctx.Refresh()
if err != nil {
c.Ui.Error(fmt.Sprintf("Error refreshing state: %s", err))
return 1
}
log.Printf("[INFO] Writing state output to: %s", outPath)
f, err = os.Create(outPath)
if err == nil {
defer f.Close()
err = terraform.WriteState(state, f)
}
if err != nil {
c.Ui.Error(fmt.Sprintf("Error writing state file: %s", err))
return 1
}
return 0
}
func (c *RefreshCommand) Help() string {
helpText := `
Usage: terraform refresh [options] [terraform.tfstate] [terraform.tf]
Refresh and update the state of your infrastructure. This is read-only
operation that will not modify infrastructure. The read-only property
is dependent on resource providers being implemented correctly.
Options:
-out=path Path to write updated state file. If this is not specified,
the existing state file will be overridden.
`
return strings.TrimSpace(helpText)
}
func (c *RefreshCommand) Synopsis() string {
return "Refresh the state of your infrastructure"
}