129 lines
3.0 KiB
Go
129 lines
3.0 KiB
Go
package validate
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import (
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"flag"
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"fmt"
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cmdcommon "github.com/mitchellh/packer/common/command"
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"github.com/mitchellh/packer/packer"
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"log"
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"strings"
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)
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type Command byte
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func (Command) Help() string {
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return strings.TrimSpace(helpString)
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}
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func (c Command) Run(env packer.Environment, args []string) int {
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var cfgSyntaxOnly bool
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buildOptions := new(cmdcommon.BuildOptions)
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cmdFlags := flag.NewFlagSet("validate", flag.ContinueOnError)
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cmdFlags.Usage = func() { env.Ui().Say(c.Help()) }
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cmdFlags.BoolVar(&cfgSyntaxOnly, "syntax-only", false, "check syntax only")
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cmdcommon.BuildOptionFlags(cmdFlags, buildOptions)
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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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args = cmdFlags.Args()
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if len(args) != 1 {
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cmdFlags.Usage()
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return 1
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}
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if err := buildOptions.Validate(); err != nil {
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env.Ui().Error(err.Error())
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env.Ui().Error("")
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env.Ui().Error(c.Help())
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return 1
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}
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userVars, err := buildOptions.AllUserVars()
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if err != nil {
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env.Ui().Error(fmt.Sprintf("Error compiling user variables: %s", err))
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env.Ui().Error("")
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env.Ui().Error(c.Help())
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return 1
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}
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// Parse the template into a machine-usable format
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log.Printf("Reading template: %s", args[0])
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tpl, err := packer.ParseTemplateFile(args[0])
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if err != nil {
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env.Ui().Error(fmt.Sprintf("Failed to parse template: %s", err))
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return 1
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}
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if cfgSyntaxOnly {
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env.Ui().Say("Syntax-only check passed. Everything looks okay.")
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return 0
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}
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errs := make([]error, 0)
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warnings := make(map[string][]string)
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// The component finder for our builds
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components := &packer.ComponentFinder{
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Builder: env.Builder,
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Hook: env.Hook,
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PostProcessor: env.PostProcessor,
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Provisioner: env.Provisioner,
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}
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// Otherwise, get all the builds
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builds, err := buildOptions.Builds(tpl, components)
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if err != nil {
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env.Ui().Error(err.Error())
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return 1
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}
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// Check the configuration of all builds
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for _, b := range builds {
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log.Printf("Preparing build: %s", b.Name())
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warns, err := b.Prepare(userVars)
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if len(warns) > 0 {
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warnings[b.Name()] = warns
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}
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if err != nil {
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errs = append(errs, fmt.Errorf("Errors validating build '%s'. %s", b.Name(), err))
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}
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}
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if len(errs) > 0 {
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env.Ui().Error("Template validation failed. Errors are shown below.\n")
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for i, err := range errs {
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env.Ui().Error(err.Error())
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if (i + 1) < len(errs) {
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env.Ui().Error("")
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}
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}
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return 1
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}
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if len(warnings) > 0 {
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env.Ui().Say("Template validation succeeded, but there were some warnings.")
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env.Ui().Say("These are ONLY WARNINGS, and Packer will attempt to build the")
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env.Ui().Say("template despite them, but they should be paid attention to.\n")
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for build, warns := range warnings {
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env.Ui().Say(fmt.Sprintf("Warnings for build '%s':\n", build))
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for _, warning := range warns {
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env.Ui().Say(fmt.Sprintf("* %s", warning))
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}
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}
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return 0
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}
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env.Ui().Say("Template validated successfully.")
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return 0
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}
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func (Command) Synopsis() string {
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return "check that a template is valid"
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}
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