terraform/command/env_new.go

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package command
import (
"context"
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"fmt"
"os"
"strings"
"github.com/hashicorp/terraform/command/clistate"
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"github.com/hashicorp/terraform/state"
"github.com/hashicorp/terraform/terraform"
"github.com/mitchellh/cli"
)
type EnvNewCommand struct {
Meta
}
func (c *EnvNewCommand) Run(args []string) int {
args = c.Meta.process(args, true)
statePath := ""
cmdFlags := c.Meta.flagSet("env new")
cmdFlags.StringVar(&statePath, "state", "", "terraform state file")
cmdFlags.Usage = func() { c.Ui.Error(c.Help()) }
if err := cmdFlags.Parse(args); err != nil {
return 1
}
args = cmdFlags.Args()
if len(args) == 0 {
c.Ui.Error("Expected a single argument: NAME.\n")
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return cli.RunResultHelp
}
newEnv := args[0]
if !validEnvName(newEnv) {
c.Ui.Error(fmt.Sprintf(envInvalidName, newEnv))
return 1
}
configPath, err := ModulePath(args[1:])
if err != nil {
c.Ui.Error(err.Error())
return 1
}
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// Load the backend
b, err := c.Backend(&BackendOpts{ConfigPath: configPath})
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if err != nil {
c.Ui.Error(fmt.Sprintf("Failed to load backend: %s", err))
return 1
}
states, err := b.States()
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for _, s := range states {
if newEnv == s {
c.Ui.Error(fmt.Sprintf(envExists, newEnv))
return 1
}
}
_, err = b.State(newEnv)
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if err != nil {
c.Ui.Error(err.Error())
return 1
}
// now save the current env locally
if err := c.SetEnv(newEnv); err != nil {
c.Ui.Error(fmt.Sprintf("error saving new environment name: %s", err))
return 1
}
c.Ui.Output(c.Colorize().Color(fmt.Sprintf(
strings.TrimSpace(envCreated), newEnv)))
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if statePath == "" {
// if we're not loading a state, then we're done
return 0
}
// load the new Backend state
sMgr, err := b.State(newEnv)
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if err != nil {
c.Ui.Error(err.Error())
return 1
}
if c.stateLock {
lockCtx, cancel := context.WithTimeout(context.Background(), c.stateLockTimeout)
defer cancel()
// Lock the state if we can
lockInfo := state.NewLockInfo()
lockInfo.Operation = "env new"
lockID, err := clistate.Lock(lockCtx, sMgr, lockInfo, c.Ui, c.Colorize())
if err != nil {
c.Ui.Error(fmt.Sprintf("Error locking state: %s", err))
return 1
}
defer clistate.Unlock(sMgr, lockID, c.Ui, c.Colorize())
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}
// read the existing state file
stateFile, err := os.Open(statePath)
if err != nil {
c.Ui.Error(err.Error())
return 1
}
s, err := terraform.ReadState(stateFile)
if err != nil {
c.Ui.Error(err.Error())
return 1
}
// save the existing state in the new Backend.
err = sMgr.WriteState(s)
if err != nil {
c.Ui.Error(err.Error())
return 1
}
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err = sMgr.PersistState()
if err != nil {
c.Ui.Error(err.Error())
return 1
}
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return 0
}
func (c *EnvNewCommand) Help() string {
helpText := `
Usage: terraform env new [OPTIONS] NAME [DIR]
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Create a new Terraform environment.
Options:
-state=path Copy an existing state file into the new environment.
`
return strings.TrimSpace(helpText)
}
func (c *EnvNewCommand) Synopsis() string {
return "Create a new environment"
}