github.com/criteo-forks/consul@v1.4.5-criteonogrpc/command/validate/validate.go (about)

     1  package validate
     2  
     3  import (
     4  	"flag"
     5  	"fmt"
     6  
     7  	"github.com/hashicorp/consul/agent/config"
     8  	"github.com/hashicorp/consul/command/flags"
     9  	"github.com/mitchellh/cli"
    10  )
    11  
    12  func New(ui cli.Ui) *cmd {
    13  	c := &cmd{UI: ui}
    14  	c.init()
    15  	return c
    16  }
    17  
    18  type cmd struct {
    19  	UI    cli.Ui
    20  	flags *flag.FlagSet
    21  	// configFormat forces all config files to be interpreted as this
    22  	// format independent of their extension.
    23  	configFormat string
    24  	quiet        bool
    25  	help         string
    26  }
    27  
    28  func (c *cmd) init() {
    29  	c.flags = flag.NewFlagSet("", flag.ContinueOnError)
    30  	c.flags.StringVar(&c.configFormat, "config-format", "",
    31  		"Config files are in this format irrespective of their extension. Must be 'hcl' or 'json'")
    32  	c.flags.BoolVar(&c.quiet, "quiet", false,
    33  		"When given, a successful run will produce no output.")
    34  	c.help = flags.Usage(help, c.flags)
    35  }
    36  
    37  func (c *cmd) Run(args []string) int {
    38  	if err := c.flags.Parse(args); err != nil {
    39  		c.UI.Error(err.Error())
    40  		return 1
    41  	}
    42  
    43  	configFiles := c.flags.Args()
    44  	if len(configFiles) < 1 {
    45  		c.UI.Error("Must specify at least one config file or directory")
    46  		return 1
    47  	}
    48  
    49  	if c.configFormat != "" && c.configFormat != "json" && c.configFormat != "hcl" {
    50  		c.UI.Error("-config-format must be either 'hcl' or 'json")
    51  		return 1
    52  	}
    53  
    54  	b, err := config.NewBuilder(config.Flags{ConfigFiles: configFiles, ConfigFormat: &c.configFormat})
    55  	if err != nil {
    56  		c.UI.Error(fmt.Sprintf("Config validation failed: %v", err.Error()))
    57  		return 1
    58  	}
    59  	if _, err := b.BuildAndValidate(); err != nil {
    60  		c.UI.Error(fmt.Sprintf("Config validation failed: %v", err.Error()))
    61  		return 1
    62  	}
    63  	if !c.quiet {
    64  		c.UI.Output("Configuration is valid!")
    65  	}
    66  	return 0
    67  }
    68  
    69  func (c *cmd) Synopsis() string {
    70  	return synopsis
    71  }
    72  
    73  func (c *cmd) Help() string {
    74  	return c.help
    75  }
    76  
    77  const synopsis = "Validate config files/directories"
    78  const help = `
    79  Usage: consul validate [options] FILE_OR_DIRECTORY...
    80  
    81    Performs a thorough sanity test on Consul configuration files. For each file
    82    or directory given, the validate command will attempt to parse the contents
    83    just as the "consul agent" command would, and catch any errors.
    84  
    85    This is useful to do a test of the configuration only, without actually
    86    starting the agent. This performs all of the validation the agent would, so
    87    this should be given the complete set of configuration files that are going
    88    to be loaded by the agent. This command cannot operate on partial
    89    configuration fragments since those won't pass the full agent validation.
    90  
    91    Returns 0 if the configuration is valid, or 1 if there are problems.
    92  `