128 lines
3.0 KiB
Go
128 lines
3.0 KiB
Go
package command
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import (
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"fmt"
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"strings"
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"github.com/hashicorp/terraform/internal/command/arguments"
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"github.com/hashicorp/terraform/internal/command/views"
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"github.com/hashicorp/terraform/internal/states"
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"github.com/hashicorp/terraform/internal/tfdiags"
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)
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// OutputCommand is a Command implementation that reads an output
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// from a Terraform state and prints it.
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type OutputCommand struct {
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Meta
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}
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func (c *OutputCommand) Run(rawArgs []string) int {
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// Parse and apply global view arguments
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common, rawArgs := arguments.ParseView(rawArgs)
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c.View.Configure(common)
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// Parse and validate flags
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args, diags := arguments.ParseOutput(rawArgs)
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if diags.HasErrors() {
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c.View.Diagnostics(diags)
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c.View.HelpPrompt("output")
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return 1
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}
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view := views.NewOutput(args.ViewType, c.View)
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// Fetch data from state
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outputs, diags := c.Outputs(args.StatePath)
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if diags.HasErrors() {
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view.Diagnostics(diags)
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return 1
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}
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// Render the view
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viewDiags := view.Output(args.Name, outputs)
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diags = diags.Append(viewDiags)
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view.Diagnostics(diags)
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if diags.HasErrors() {
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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 *OutputCommand) Outputs(statePath string) (map[string]*states.OutputValue, tfdiags.Diagnostics) {
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var diags tfdiags.Diagnostics
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// Allow state path override
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if statePath != "" {
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c.Meta.statePath = statePath
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}
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// Load the backend
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b, backendDiags := c.Backend(nil)
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diags = diags.Append(backendDiags)
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if diags.HasErrors() {
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return nil, diags
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}
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// This is a read-only command
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c.ignoreRemoteVersionConflict(b)
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env, err := c.Workspace()
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if err != nil {
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diags = diags.Append(fmt.Errorf("Error selecting workspace: %s", err))
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return nil, diags
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}
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// Get the state
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stateStore, err := b.StateMgr(env)
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if err != nil {
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diags = diags.Append(fmt.Errorf("Failed to load state: %s", err))
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return nil, diags
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}
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if err := stateStore.RefreshState(); err != nil {
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diags = diags.Append(fmt.Errorf("Failed to load state: %s", err))
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return nil, diags
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}
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state := stateStore.State()
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if state == nil {
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state = states.NewState()
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}
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return state.RootModule().OutputValues, nil
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}
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func (c *OutputCommand) Help() string {
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helpText := `
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Usage: terraform [global options] output [options] [NAME]
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Reads an output variable from a Terraform state file and prints
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the value. With no additional arguments, output will display all
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the outputs for the root module. If NAME is not specified, all
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outputs are printed.
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Options:
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-state=path Path to the state file to read. Defaults to
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"terraform.tfstate".
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-no-color If specified, output won't contain any color.
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-json If specified, machine readable output will be
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printed in JSON format.
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-raw For value types that can be automatically
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converted to a string, will print the raw
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string directly, rather than a human-oriented
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representation of the value.
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`
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return strings.TrimSpace(helpText)
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}
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func (c *OutputCommand) Synopsis() string {
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return "Show output values from your root module"
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}
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