73 lines
1.6 KiB
Go
73 lines
1.6 KiB
Go
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package command
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import (
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"flag"
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"fmt"
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"strings"
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"github.com/hashicorp/terraform/config"
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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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// DiffCommand is a Command implementation that compares a Terraform
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// configuration to an actual infrastructure and shows the differences.
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type DiffCommand struct {
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TFConfig *terraform.Config
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Ui cli.Ui
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}
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func (c *DiffCommand) Run(args []string) int {
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cmdFlags := flag.NewFlagSet("diff", flag.ContinueOnError)
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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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args = cmdFlags.Args()
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if len(args) != 1 {
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c.Ui.Error(
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"The diff command expects only one argument with the path\n" +
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"to a Terraform configuration.\n")
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cmdFlags.Usage()
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return 1
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}
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b, err := config.Load(args[0])
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if err != nil {
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c.Ui.Error(fmt.Sprintf("Error loading blueprint: %s", err))
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return 1
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}
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tfconfig := c.TFConfig
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tfconfig.Config = b
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_, err = terraform.New(tfconfig)
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if err != nil {
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c.Ui.Error(fmt.Sprintf("Error initializing Terraform: %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 *DiffCommand) Help() string {
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helpText := `
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Usage: terraform diff [options] [terraform.tf]
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Shows the differences between the Terraform configuration and
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the actual state of an infrastructure.
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Options:
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-state=statefile Path to a Terraform state file to use to look
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up Terraform-managed resources.
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`
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return strings.TrimSpace(helpText)
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}
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func (c *DiffCommand) Synopsis() string {
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return "Show changes between Terraform config and infrastructure"
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}
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