436 lines
12 KiB
Go
436 lines
12 KiB
Go
package command
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import (
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"bytes"
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"context"
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"fmt"
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"os"
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"sort"
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"strings"
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"github.com/hashicorp/go-getter"
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"github.com/hashicorp/terraform/backend"
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"github.com/hashicorp/terraform/config"
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"github.com/hashicorp/terraform/config/module"
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"github.com/hashicorp/terraform/terraform"
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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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Meta
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// If true, then this apply command will become the "destroy"
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// command. It is just like apply but only processes a destroy.
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Destroy bool
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// When this channel is closed, the apply will be cancelled.
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ShutdownCh <-chan struct{}
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}
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func (c *ApplyCommand) Run(args []string) int {
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var destroyForce, refresh bool
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args = c.Meta.process(args, true)
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cmdName := "apply"
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if c.Destroy {
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cmdName = "destroy"
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}
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cmdFlags := c.Meta.flagSet(cmdName)
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if c.Destroy {
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cmdFlags.BoolVar(&destroyForce, "force", false, "force")
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}
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cmdFlags.BoolVar(&refresh, "refresh", true, "refresh")
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cmdFlags.IntVar(
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&c.Meta.parallelism, "parallelism", DefaultParallelism, "parallelism")
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cmdFlags.StringVar(&c.Meta.statePath, "state", "", "path")
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cmdFlags.StringVar(&c.Meta.stateOutPath, "state-out", "", "path")
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cmdFlags.StringVar(&c.Meta.backupPath, "backup", "", "path")
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cmdFlags.BoolVar(&c.Meta.stateLock, "lock", true, "lock state")
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cmdFlags.DurationVar(&c.Meta.stateLockTimeout, "lock-timeout", 0, "lock timeout")
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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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// Get the args. The "maybeInit" flag tracks whether we may need to
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// initialize the configuration from a remote path. This is true as long
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// as we have an argument.
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args = cmdFlags.Args()
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maybeInit := len(args) == 1
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configPath, err := ModulePath(args)
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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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// Check for user-supplied plugin path
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if c.pluginPath, err = c.loadPluginPath(); err != nil {
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c.Ui.Error(fmt.Sprintf("Error loading plugin path: %s", err))
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return 1
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}
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if !c.Destroy && maybeInit {
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// We need the pwd for the getter operation below
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pwd, 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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return 1
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}
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// Do a detect to determine if we need to do an init + apply.
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if detected, err := getter.Detect(configPath, pwd, getter.Detectors); err != nil {
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c.Ui.Error(fmt.Sprintf(
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"Invalid path: %s", err))
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return 1
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} else if !strings.HasPrefix(detected, "file") {
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// If this isn't a file URL then we're doing an init +
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// apply.
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var init InitCommand
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init.Meta = c.Meta
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if code := init.Run([]string{detected}); code != 0 {
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return code
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}
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// Change the config path to be the cwd
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configPath = pwd
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}
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}
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// Check if the path is a plan
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plan, err := c.Plan(configPath)
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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 c.Destroy && plan != nil {
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c.Ui.Error(fmt.Sprintf(
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"Destroy can't be called with a plan file."))
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return 1
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}
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if plan != nil {
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// Reset the config path for backend loading
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configPath = ""
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}
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// Load the module if we don't have one yet (not running from plan)
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var mod *module.Tree
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if plan == nil {
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mod, err = c.Module(configPath)
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if err != nil {
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c.Ui.Error(fmt.Sprintf("Failed to load root config module: %s", err))
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return 1
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}
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}
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/*
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terraform.SetDebugInfo(DefaultDataDir)
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// Check for the legacy graph
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if experiment.Enabled(experiment.X_legacyGraph) {
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c.Ui.Output(c.Colorize().Color(
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"[reset][bold][yellow]" +
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"Legacy graph enabled! This will use the graph from Terraform 0.7.x\n" +
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"to execute this operation. This will be removed in the future so\n" +
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"please report any issues causing you to use this to the Terraform\n" +
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"project.\n\n"))
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}
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*/
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var conf *config.Config
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if mod != nil {
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conf = mod.Config()
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}
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// Load the backend
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b, err := c.Backend(&BackendOpts{
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Config: conf,
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Plan: plan,
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})
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if err != nil {
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c.Ui.Error(fmt.Sprintf("Failed to load backend: %s", err))
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return 1
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}
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// If we're not forcing and we're destroying, verify with the
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// user at this point.
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if !destroyForce && c.Destroy {
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// Default destroy message
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desc := "Terraform will delete all your managed infrastructure.\n" +
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"There is no undo. Only 'yes' will be accepted to confirm."
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// If targets are specified, list those to user
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if c.Meta.targets != nil {
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var descBuffer bytes.Buffer
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descBuffer.WriteString("Terraform will delete the following infrastructure:\n")
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for _, target := range c.Meta.targets {
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descBuffer.WriteString("\t")
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descBuffer.WriteString(target)
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descBuffer.WriteString("\n")
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}
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descBuffer.WriteString("There is no undo. Only 'yes' will be accepted to confirm")
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desc = descBuffer.String()
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}
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v, err := c.UIInput().Input(&terraform.InputOpts{
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Id: "destroy",
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Query: "Do you really want to destroy?",
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Description: desc,
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})
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if err != nil {
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c.Ui.Error(fmt.Sprintf("Error asking for confirmation: %s", err))
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return 1
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}
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if v != "yes" {
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c.Ui.Output("Destroy cancelled.")
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return 1
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}
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}
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// Build the operation
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opReq := c.Operation()
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opReq.Destroy = c.Destroy
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opReq.Module = mod
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opReq.Plan = plan
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opReq.PlanRefresh = refresh
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opReq.Type = backend.OperationTypeApply
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// Perform the operation
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ctx, ctxCancel := context.WithCancel(context.Background())
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defer ctxCancel()
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op, err := b.Operation(ctx, opReq)
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if err != nil {
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c.Ui.Error(fmt.Sprintf("Error starting operation: %s", err))
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return 1
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}
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// Wait for the operation to complete or an interrupt to occur
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select {
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case <-c.ShutdownCh:
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// Cancel our context so we can start gracefully exiting
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ctxCancel()
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// Notify the user
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c.Ui.Output(outputInterrupt)
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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 <-op.Done():
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}
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case <-op.Done():
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if err := op.Err; 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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}
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if !c.Destroy {
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// Get the right module that we used. If we ran a plan, then use
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// that module.
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if plan != nil {
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mod = plan.Module
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}
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if outputs := outputsAsString(op.State, terraform.RootModulePath, mod.Config().Outputs, true); outputs != "" {
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c.Ui.Output(c.Colorize().Color(outputs))
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}
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}
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return 0
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}
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func (c *ApplyCommand) Help() string {
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if c.Destroy {
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return c.helpDestroy()
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}
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return c.helpApply()
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}
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func (c *ApplyCommand) Synopsis() string {
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if c.Destroy {
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return "Destroy Terraform-managed infrastructure"
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}
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return "Builds or changes infrastructure"
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}
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func (c *ApplyCommand) helpApply() string {
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helpText := `
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Usage: terraform apply [options] [DIR-OR-PLAN]
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Builds or changes infrastructure according to Terraform configuration
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files in DIR.
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By default, apply scans the current directory for the configuration
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and applies the changes appropriately. However, a path to another
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configuration or an execution plan can be provided. Execution plans can be
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used to only execute a pre-determined set of actions.
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DIR can also be a SOURCE as given to the "init" command. In this case,
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apply behaves as though "init" was called followed by "apply". This only
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works for sources that aren't files, and only if the current working
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directory is empty of Terraform files. This is a shortcut for getting
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started.
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Options:
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-backup=path Path to backup the existing state file before
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modifying. Defaults to the "-state-out" path with
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".backup" extension. Set to "-" to disable backup.
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-lock=true Lock the state file when locking is supported.
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-lock-timeout=0s Duration to retry a state lock.
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-input=true Ask for input for variables if not directly set.
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-no-color If specified, output won't contain any color.
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-parallelism=n Limit the number of parallel resource operations.
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Defaults to 10.
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-refresh=true Update state prior to checking for differences. This
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has no effect if a plan file is given to apply.
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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 state to that is different than
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"-state". This can be used to preserve the old
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state.
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-target=resource Resource to target. Operation will be limited to this
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resource and its dependencies. This flag can be used
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multiple times.
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-var 'foo=bar' Set a variable in the Terraform configuration. This
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flag can be set multiple times.
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-var-file=foo Set variables in the Terraform configuration from
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a file. If "terraform.tfvars" is present, it will be
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automatically loaded if this flag is not specified.
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`
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return strings.TrimSpace(helpText)
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}
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func (c *ApplyCommand) helpDestroy() string {
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helpText := `
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Usage: terraform destroy [options] [DIR]
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Destroy Terraform-managed infrastructure.
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Options:
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-backup=path Path to backup the existing state file before
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modifying. Defaults to the "-state-out" path with
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".backup" extension. Set to "-" to disable backup.
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-force Don't ask for input for destroy confirmation.
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-lock=true Lock the state file when locking is supported.
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-lock-timeout=0s Duration to retry a state lock.
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-no-color If specified, output won't contain any color.
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-parallelism=n Limit the number of concurrent operations.
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Defaults to 10.
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-refresh=true Update state prior to checking for differences. This
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has no effect if a plan file is given to apply.
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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 state to that is different than
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"-state". This can be used to preserve the old
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state.
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-target=resource Resource to target. Operation will be limited to this
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resource and its dependencies. This flag can be used
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multiple times.
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-var 'foo=bar' Set a variable in the Terraform configuration. This
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flag can be set multiple times.
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-var-file=foo Set variables in the Terraform configuration from
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a file. If "terraform.tfvars" is present, it will be
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automatically loaded if this flag is not specified.
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`
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return strings.TrimSpace(helpText)
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}
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func outputsAsString(state *terraform.State, modPath []string, schema []*config.Output, includeHeader bool) string {
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if state == nil {
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return ""
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}
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ms := state.ModuleByPath(modPath)
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if ms == nil {
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return ""
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}
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outputs := ms.Outputs
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outputBuf := new(bytes.Buffer)
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if len(outputs) > 0 {
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schemaMap := make(map[string]*config.Output)
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if schema != nil {
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for _, s := range schema {
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schemaMap[s.Name] = s
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}
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}
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if includeHeader {
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outputBuf.WriteString("[reset][bold][green]\nOutputs:\n\n")
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}
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// Output the outputs in alphabetical order
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keyLen := 0
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ks := make([]string, 0, len(outputs))
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for key, _ := range outputs {
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ks = append(ks, key)
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if len(key) > keyLen {
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keyLen = len(key)
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}
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}
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sort.Strings(ks)
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for _, k := range ks {
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schema, ok := schemaMap[k]
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if ok && schema.Sensitive {
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outputBuf.WriteString(fmt.Sprintf("%s = <sensitive>\n", k))
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continue
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}
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v := outputs[k]
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switch typedV := v.Value.(type) {
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case string:
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outputBuf.WriteString(fmt.Sprintf("%s = %s\n", k, typedV))
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case []interface{}:
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outputBuf.WriteString(formatListOutput("", k, typedV))
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outputBuf.WriteString("\n")
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case map[string]interface{}:
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outputBuf.WriteString(formatMapOutput("", k, typedV))
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outputBuf.WriteString("\n")
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}
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}
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}
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return strings.TrimSpace(outputBuf.String())
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}
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const outputInterrupt = `Interrupt received.
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Please wait for Terraform to exit or data loss may occur.
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Gracefully shutting down...`
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