138 lines
2.9 KiB
Go
138 lines
2.9 KiB
Go
package command
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import (
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"flag"
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"fmt"
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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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// ApplyCommand is a Command implementation that applies a Terraform
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// configuration and actually builds or changes infrastructure.
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type ApplyCommand struct {
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ShutdownCh <-chan 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 *ApplyCommand) Run(args []string) int {
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var init bool
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var stateOutPath string
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cmdFlags := flag.NewFlagSet("apply", flag.ContinueOnError)
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cmdFlags.BoolVar(&init, "init", false, "init")
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cmdFlags.StringVar(&stateOutPath, "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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args = cmdFlags.Args()
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if len(args) != 2 {
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c.Ui.Error("The apply command expects two arguments.\n")
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cmdFlags.Usage()
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return 1
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}
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statePath := args[0]
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configPath := args[1]
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if stateOutPath == "" {
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stateOutPath = statePath
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}
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planStatePath := statePath
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if init {
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planStatePath = ""
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}
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// Initialize Terraform right away
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c.ContextOpts.Hooks = append(c.ContextOpts.Hooks, &UiHook{Ui: c.Ui})
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ctx, err := ContextArg(configPath, planStatePath, 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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errCh := make(chan error)
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stateCh := make(chan *terraform.State)
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go func() {
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state, err := ctx.Apply()
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if err != nil {
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errCh <- err
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return
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}
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stateCh <- state
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}()
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err = nil
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var state *terraform.State
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select {
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case <-c.ShutdownCh:
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c.Ui.Output("Interrupt received. Gracefully shutting down...")
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// Stop execution
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ctx.Stop()
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// Still get the result, since there is still one
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select {
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case <-c.ShutdownCh:
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c.Ui.Error(
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"Two interrupts received. Exiting immediately. Note that data\n" +
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"loss may have occurred.")
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return 1
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case state = <-stateCh:
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case err = <-errCh:
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}
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case state = <-stateCh:
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case err = <-errCh:
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}
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if err != nil {
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c.Ui.Error(fmt.Sprintf("Error applying plan: %s", err))
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return 1
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}
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// Write state out to the file
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f, err := os.Create(stateOutPath)
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if err == nil {
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err = terraform.WriteState(state, f)
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f.Close()
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}
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if err != nil {
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c.Ui.Error(fmt.Sprintf("Failed to save state: %s", err))
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return 1
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}
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c.Ui.Output(strings.TrimSpace(state.String()))
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return 0
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}
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func (c *ApplyCommand) Help() string {
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helpText := `
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Usage: terraform apply [options] STATE PATH
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Builds or changes infrastructure according to the Terraform configuration
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file.
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Options:
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-init If specified, it is okay to build brand new
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infrastructure (with no state file specified).
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-out=file.tfstate Path to save the new state. If not specified, the
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state path argument 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 *ApplyCommand) Synopsis() string {
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return "Builds or changes infrastructure"
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}
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