126 lines
3.0 KiB
Go
126 lines
3.0 KiB
Go
package command
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
|
|
"github.com/hashicorp/terraform/config"
|
|
"github.com/hashicorp/terraform/terraform"
|
|
"github.com/mitchellh/cli"
|
|
"github.com/mitchellh/colorstring"
|
|
)
|
|
|
|
// Meta are the meta-options that are available on all or most commands.
|
|
type Meta struct {
|
|
Color bool
|
|
ContextOpts *terraform.ContextOpts
|
|
Ui cli.Ui
|
|
}
|
|
|
|
// Colorize returns the colorization structure for a command.
|
|
func (m *Meta) Colorize() *colorstring.Colorize {
|
|
return &colorstring.Colorize{
|
|
Colors: colorstring.DefaultColors,
|
|
Disable: !m.Color,
|
|
Reset: true,
|
|
}
|
|
}
|
|
|
|
// Context returns a Terraform Context taking into account the context
|
|
// options used to initialize this meta configuration.
|
|
func (m *Meta) Context(path, statePath string) (*terraform.Context, error) {
|
|
opts := m.contextOpts()
|
|
|
|
// First try to just read the plan directly from the path given.
|
|
f, err := os.Open(path)
|
|
if err == nil {
|
|
plan, err := terraform.ReadPlan(f)
|
|
f.Close()
|
|
if err == nil {
|
|
return plan.Context(opts), nil
|
|
}
|
|
}
|
|
|
|
if statePath != "" {
|
|
if _, err := os.Stat(statePath); err != nil {
|
|
return nil, fmt.Errorf(
|
|
"There was an error reading the state file. The path\n"+
|
|
"and error are shown below. If you're trying to build a\n"+
|
|
"brand new infrastructure, explicitly pass the '-init'\n"+
|
|
"flag to Terraform to tell it it is okay to build new\n"+
|
|
"state.\n\n"+
|
|
"Path: %s\n"+
|
|
"Error: %s",
|
|
statePath,
|
|
err)
|
|
}
|
|
}
|
|
|
|
// Load up the state
|
|
var state *terraform.State
|
|
if statePath != "" {
|
|
f, err := os.Open(statePath)
|
|
if err == nil {
|
|
state, err = terraform.ReadState(f)
|
|
f.Close()
|
|
}
|
|
|
|
if err != nil {
|
|
return nil, fmt.Errorf("Error loading state: %s", err)
|
|
}
|
|
}
|
|
|
|
config, err := config.LoadDir(path)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("Error loading config: %s", err)
|
|
}
|
|
if err := config.Validate(); err != nil {
|
|
return nil, fmt.Errorf("Error validating config: %s", err)
|
|
}
|
|
|
|
opts.Config = config
|
|
opts.State = state
|
|
ctx := terraform.NewContext(opts)
|
|
|
|
if _, err := ctx.Plan(nil); err != nil {
|
|
return nil, fmt.Errorf("Error running plan: %s", err)
|
|
}
|
|
|
|
return ctx, nil
|
|
|
|
}
|
|
|
|
// contextOpts returns the options to use to initialize a Terraform
|
|
// context with the settings from this Meta.
|
|
func (m *Meta) contextOpts() *terraform.ContextOpts {
|
|
var opts terraform.ContextOpts = *m.ContextOpts
|
|
opts.Hooks = make([]terraform.Hook, len(m.ContextOpts.Hooks)+1)
|
|
opts.Hooks[0] = m.uiHook()
|
|
copy(opts.Hooks[1:], m.ContextOpts.Hooks)
|
|
return &opts
|
|
}
|
|
|
|
// process will process the meta-parameters out of the arguments. This
|
|
// will potentially modify the args in-place. It will return the resulting
|
|
// slice.
|
|
func (m *Meta) process(args []string) []string {
|
|
m.Color = true
|
|
|
|
for i, v := range args {
|
|
if v == "-no-color" {
|
|
m.Color = false
|
|
return append(args[:i], args[i+1:]...)
|
|
}
|
|
}
|
|
|
|
return args
|
|
}
|
|
|
|
// uiHook returns the UiHook to use with the context.
|
|
func (m *Meta) uiHook() *UiHook {
|
|
return &UiHook{
|
|
Colorize: m.Colorize(),
|
|
Ui: m.Ui,
|
|
}
|
|
}
|