mirror of
https://github.com/opentofu/opentofu.git
synced 2025-01-28 17:34:24 -06:00
a3403f2766
Due to how often the state and plan types are referenced throughout Terraform, there isn't a great way to switch them out gradually. As a consequence, this huge commit gets us from the old world to a _compilable_ new world, but still has a large number of known test failures due to key functionality being stubbed out. The stubs here are for anything that interacts with providers, since we now need to do the follow-up work to similarly replace the old terraform.ResourceProvider interface with its replacement in the new "providers" package. That work, along with work to fix the remaining failing tests, will follow in subsequent commits. The aim here was to replace all references to terraform.State and its downstream types with states.State, terraform.Plan with plans.Plan, state.State with statemgr.State, and switch to the new implementations of the state and plan file formats. However, due to the number of times those types are used, this also ended up affecting numerous other parts of core such as terraform.Hook, the backend.Backend interface, and most of the CLI commands. Just as with 5861dbf3fc49b19587a31816eb06f511ab861bb4 before, I apologize in advance to the person who inevitably just found this huge commit while spelunking through the commit history.
192 lines
4.8 KiB
Go
192 lines
4.8 KiB
Go
package command
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import (
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"bufio"
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"strings"
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"github.com/hashicorp/terraform/addrs"
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"github.com/hashicorp/terraform/backend"
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"github.com/hashicorp/terraform/helper/wrappedstreams"
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"github.com/hashicorp/terraform/repl"
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"github.com/hashicorp/terraform/tfdiags"
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"github.com/mitchellh/cli"
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)
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// ConsoleCommand is a Command implementation that applies a Terraform
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// configuration and actually builds or changes infrastructure.
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type ConsoleCommand struct {
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Meta
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}
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func (c *ConsoleCommand) Run(args []string) int {
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args, err := c.Meta.process(args, true)
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if err != nil {
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return 1
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}
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cmdFlags := c.Meta.flagSet("console")
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cmdFlags.StringVar(&c.Meta.statePath, "state", DefaultStateFilename, "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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configPath, err := ModulePath(cmdFlags.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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var diags tfdiags.Diagnostics
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backendConfig, backendDiags := c.loadBackendConfig(configPath)
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diags = diags.Append(backendDiags)
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if diags.HasErrors() {
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c.showDiagnostics(diags)
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return 1
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}
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// Load the backend
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b, backendDiags := c.Backend(&BackendOpts{
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Config: backendConfig,
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})
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diags = diags.Append(backendDiags)
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if backendDiags.HasErrors() {
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c.showDiagnostics(diags)
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return 1
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}
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// We require a local backend
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local, ok := b.(backend.Local)
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if !ok {
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c.showDiagnostics(diags) // in case of any warnings in here
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c.Ui.Error(ErrUnsupportedLocalOp)
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return 1
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}
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// Build the operation
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opReq := c.Operation(b)
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opReq.ConfigDir = configPath
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opReq.ConfigLoader, err = c.initConfigLoader()
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if err != nil {
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diags = diags.Append(err)
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c.showDiagnostics(diags)
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return 1
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}
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// Get the context
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ctx, _, ctxDiags := local.Context(opReq)
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diags = diags.Append(ctxDiags)
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if ctxDiags.HasErrors() {
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c.showDiagnostics(diags)
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return 1
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}
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defer func() {
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err := opReq.StateLocker.Unlock(nil)
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if err != nil {
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c.Ui.Error(err.Error())
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}
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}()
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// Setup the UI so we can output directly to stdout
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ui := &cli.BasicUi{
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Writer: wrappedstreams.Stdout(),
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ErrorWriter: wrappedstreams.Stderr(),
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}
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// Before we can evaluate expressions, we must compute and populate any
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// derived values (input variables, local values, output values)
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// that are not stored in the persistent state.
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scope, scopeDiags := ctx.Eval(addrs.RootModuleInstance)
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diags = diags.Append(scopeDiags)
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if scope == nil {
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// scope is nil if there are errors so bad that we can't even build a scope.
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// Otherwise, we'll try to eval anyway.
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c.showDiagnostics(diags)
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return 1
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}
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if diags.HasErrors() {
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diags = diags.Append(tfdiags.SimpleWarning("Due to the problems above, some expressions may produce unexpected results."))
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}
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// Before we become interactive we'll show any diagnostics we encountered
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// during initialization, and then afterwards the driver will manage any
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// further diagnostics itself.
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c.showDiagnostics(diags)
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// IO Loop
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session := &repl.Session{
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Scope: scope,
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}
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// Determine if stdin is a pipe. If so, we evaluate directly.
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if c.StdinPiped() {
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return c.modePiped(session, ui)
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}
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return c.modeInteractive(session, ui)
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}
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func (c *ConsoleCommand) modePiped(session *repl.Session, ui cli.Ui) int {
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var lastResult string
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scanner := bufio.NewScanner(wrappedstreams.Stdin())
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for scanner.Scan() {
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result, exit, diags := session.Handle(strings.TrimSpace(scanner.Text()))
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if diags.HasErrors() {
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// In piped mode we'll exit immediately on error.
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c.showDiagnostics(diags)
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return 1
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}
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if exit {
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return 0
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}
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// Store the last result
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lastResult = result
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}
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// Output the final result
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ui.Output(lastResult)
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return 0
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}
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func (c *ConsoleCommand) Help() string {
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helpText := `
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Usage: terraform console [options] [DIR]
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Starts an interactive console for experimenting with Terraform
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interpolations.
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This will open an interactive console that you can use to type
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interpolations into and inspect their values. This command loads the
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current state. This lets you explore and test interpolations before
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using them in future configurations.
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This command will never modify your state.
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DIR can be set to a directory with a Terraform state to load. By
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default, this will default to the current working directory.
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Options:
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-state=path Path to read state. Defaults to "terraform.tfstate"
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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" or any ".auto.tfvars"
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files are present, they will be automatically loaded.
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`
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return strings.TrimSpace(helpText)
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}
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func (c *ConsoleCommand) Synopsis() string {
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return "Interactive console for Terraform interpolations"
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}
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