terraform/command/validate.go

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2015-11-05 15:47:08 +01:00
package command
import (
"fmt"
"path/filepath"
"strings"
"github.com/hashicorp/terraform/config"
"github.com/hashicorp/terraform/terraform"
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)
// ValidateCommand is a Command implementation that validates the terraform files
type ValidateCommand struct {
Meta
}
const defaultPath = "."
func (c *ValidateCommand) Run(args []string) int {
args = c.Meta.process(args, true)
var checkVars bool
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cmdFlags := c.Meta.flagSet("validate")
cmdFlags.BoolVar(&checkVars, "check-variables", true, "check-variables")
cmdFlags.Usage = func() {
c.Ui.Error(c.Help())
}
if err := cmdFlags.Parse(args); err != nil {
return 1
}
args = cmdFlags.Args()
var dirPath string
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if len(args) == 1 {
dirPath = args[0]
} else {
dirPath = "."
}
dir, err := filepath.Abs(dirPath)
if err != nil {
c.Ui.Error(fmt.Sprintf(
"Unable to locate directory %v\n", err.Error()))
}
rtnCode := c.validate(dir, checkVars)
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return rtnCode
}
func (c *ValidateCommand) Synopsis() string {
return "Validates the Terraform files"
}
func (c *ValidateCommand) Help() string {
helpText := `
Usage: terraform validate [options] [dir]
Validate the terraform files in a directory. Validation includes a
basic check of syntax as well as checking that all variables declared
in the configuration are specified in one of the possible ways:
-var foo=...
-var-file=foo.vars
TF_VAR_foo environment variable
terraform.tfvars
default value
If dir is not specified, then the current directory will be used.
Options:
-check-variables=true If set to true (default), the command will check
whether all required variables have been specified.
-no-color If specified, output won't contain any color.
-var 'foo=bar' Set a variable in the Terraform configuration. This
flag can be set multiple times.
-var-file=foo Set variables in the Terraform configuration from
a file. If "terraform.tfvars" is present, it will be
automatically loaded if this flag is not specified.
`
return strings.TrimSpace(helpText)
}
func (c *ValidateCommand) validate(dir string, checkVars bool) int {
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cfg, err := config.LoadDir(dir)
if err != nil {
c.Ui.Error(fmt.Sprintf(
"Error loading files %v\n", err.Error()))
return 1
}
err = cfg.Validate()
if err != nil {
c.Ui.Error(fmt.Sprintf(
"Error validating: %v\n", err.Error()))
return 1
}
if checkVars {
mod, err := c.Module(dir)
if err != nil {
c.Ui.Error(fmt.Sprintf("Failed to load root config module: %s", err))
return 1
}
opts := c.contextOpts()
opts.Module = mod
tfCtx, err := terraform.NewContext(opts)
if err != nil {
c.Ui.Error(fmt.Sprintf("Error: %v\n", err.Error()))
return 1
}
if !validateContext(tfCtx, c.Ui) {
return 1
}
}
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return 0
}