137 lines
3.6 KiB
Go
137 lines
3.6 KiB
Go
package command
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import (
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"flag"
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"fmt"
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"log"
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"os"
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"strings"
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"github.com/hashicorp/terraform/terraform"
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"github.com/mitchellh/cli"
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)
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// RefreshCommand is a cli.Command implementation that refreshes the state
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// file.
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type RefreshCommand struct {
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ContextOpts *terraform.ContextOpts
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Ui cli.Ui
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}
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func (c *RefreshCommand) Run(args []string) int {
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var statePath, stateOutPath string
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cmdFlags := flag.NewFlagSet("refresh", flag.ContinueOnError)
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cmdFlags.StringVar(&statePath, "state", DefaultStateFilename, "path")
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cmdFlags.StringVar(&stateOutPath, "state-out", "", "path")
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cmdFlags.Usage = func() { c.Ui.Error(c.Help()) }
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if err := cmdFlags.Parse(args); err != nil {
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return 1
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}
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var configPath string
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args = cmdFlags.Args()
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if len(args) > 1 {
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c.Ui.Error("The apply command expacts at most one argument.")
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cmdFlags.Usage()
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return 1
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} else if len(args) == 1 {
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configPath = args[0]
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} else {
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var err error
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configPath, err = os.Getwd()
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if err != nil {
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c.Ui.Error(fmt.Sprintf("Error getting pwd: %s", err))
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}
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}
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// If we don't specify an output path, default to out normal state
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// path.
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if stateOutPath == "" {
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stateOutPath = statePath
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}
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// Verify that the state path exists. The "ContextArg" function below
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// will actually do this, but we want to provide a richer error message
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// if possible.
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if _, err := os.Stat(statePath); err != nil {
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if os.IsNotExist(err) {
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c.Ui.Error(fmt.Sprintf(
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"The Terraform state file for your infrastructure does not\n"+
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"exist. The 'refresh' command only works and only makes sense\n"+
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"when there is existing state that Terraform is managing. Please\n"+
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"double-check the value given below and try again. If you\n"+
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"haven't created infrastructure with Terraform yet, use the\n"+
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"'terraform apply' command.\n\n"+
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"Path: %s",
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statePath))
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return 1
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}
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c.Ui.Error(fmt.Sprintf(
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"There was an error reading the Terraform state that is needed\n"+
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"for refreshing. The path and error are shown below.\n\n"+
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"Path: %s\n\nError: %s",
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statePath,
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err))
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return 1
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}
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// Build the context based on the arguments given
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c.ContextOpts.Hooks = append(c.ContextOpts.Hooks, &UiHook{Ui: c.Ui})
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ctx, err := ContextArg(configPath, statePath, c.ContextOpts)
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if err != nil {
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c.Ui.Error(err.Error())
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return 1
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}
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if !validateContext(ctx, c.Ui) {
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return 1
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}
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state, err := ctx.Refresh()
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if err != nil {
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c.Ui.Error(fmt.Sprintf("Error refreshing state: %s", err))
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return 1
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}
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log.Printf("[INFO] Writing state output to: %s", stateOutPath)
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f, err := os.Create(stateOutPath)
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if err == nil {
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defer f.Close()
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err = terraform.WriteState(state, f)
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}
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if err != nil {
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c.Ui.Error(fmt.Sprintf("Error writing state file: %s", err))
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return 1
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}
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return 0
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}
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func (c *RefreshCommand) Help() string {
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helpText := `
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Usage: terraform refresh [options] [dir]
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Update the state file of your infrastructure with metadata that matches
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the physical resources they are tracking.
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This will not modify your infrastructure, but it can modify your
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state file to update metadata. This metadata might cause new changes
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to occur when you generate a plan or call apply next.
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Options:
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-state=path Path to read and save state (unless state-out
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is specified). Defaults to "terraform.tfstate".
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-state-out=path Path to write updated state file. By default, the
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"-state" path will be used.
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`
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return strings.TrimSpace(helpText)
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}
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func (c *RefreshCommand) Synopsis() string {
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return "Refresh the local state of your infrastructure"
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}
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