github.com/amanya/packer@v0.12.1-0.20161117214323-902ac5ab2eb6/builder/digitalocean/config.go (about)

     1  package digitalocean
     2  
     3  import (
     4  	"errors"
     5  	"fmt"
     6  	"os"
     7  	"time"
     8  
     9  	"github.com/mitchellh/mapstructure"
    10  	"github.com/mitchellh/packer/common"
    11  	"github.com/mitchellh/packer/common/uuid"
    12  	"github.com/mitchellh/packer/helper/communicator"
    13  	"github.com/mitchellh/packer/helper/config"
    14  	"github.com/mitchellh/packer/packer"
    15  	"github.com/mitchellh/packer/template/interpolate"
    16  )
    17  
    18  type Config struct {
    19  	common.PackerConfig `mapstructure:",squash"`
    20  	Comm                communicator.Config `mapstructure:",squash"`
    21  
    22  	APIToken string `mapstructure:"api_token"`
    23  	APIURL   string `mapstructure:"api_url"`
    24  
    25  	Region string `mapstructure:"region"`
    26  	Size   string `mapstructure:"size"`
    27  	Image  string `mapstructure:"image"`
    28  
    29  	PrivateNetworking bool          `mapstructure:"private_networking"`
    30  	SnapshotName      string        `mapstructure:"snapshot_name"`
    31  	StateTimeout      time.Duration `mapstructure:"state_timeout"`
    32  	DropletName       string        `mapstructure:"droplet_name"`
    33  	UserData          string        `mapstructure:"user_data"`
    34  	UserDataFile      string        `mapstructure:"user_data_file"`
    35  
    36  	ctx interpolate.Context
    37  }
    38  
    39  func NewConfig(raws ...interface{}) (*Config, []string, error) {
    40  	c := new(Config)
    41  
    42  	var md mapstructure.Metadata
    43  	err := config.Decode(c, &config.DecodeOpts{
    44  		Metadata:           &md,
    45  		Interpolate:        true,
    46  		InterpolateContext: &c.ctx,
    47  		InterpolateFilter: &interpolate.RenderFilter{
    48  			Exclude: []string{
    49  				"run_command",
    50  			},
    51  		},
    52  	}, raws...)
    53  	if err != nil {
    54  		return nil, nil, err
    55  	}
    56  
    57  	// Defaults
    58  	if c.APIToken == "" {
    59  		// Default to environment variable for api_token, if it exists
    60  		c.APIToken = os.Getenv("DIGITALOCEAN_API_TOKEN")
    61  	}
    62  	if c.APIURL == "" {
    63  		c.APIURL = os.Getenv("DIGITALOCEAN_API_URL")
    64  	}
    65  	if c.SnapshotName == "" {
    66  		def, err := interpolate.Render("packer-{{timestamp}}", nil)
    67  		if err != nil {
    68  			panic(err)
    69  		}
    70  
    71  		// Default to packer-{{ unix timestamp (utc) }}
    72  		c.SnapshotName = def
    73  	}
    74  
    75  	if c.DropletName == "" {
    76  		// Default to packer-[time-ordered-uuid]
    77  		c.DropletName = fmt.Sprintf("packer-%s", uuid.TimeOrderedUUID())
    78  	}
    79  
    80  	if c.StateTimeout == 0 {
    81  		// Default to 6 minute timeouts waiting for
    82  		// desired state. i.e waiting for droplet to become active
    83  		c.StateTimeout = 6 * time.Minute
    84  	}
    85  
    86  	var errs *packer.MultiError
    87  	if es := c.Comm.Prepare(&c.ctx); len(es) > 0 {
    88  		errs = packer.MultiErrorAppend(errs, es...)
    89  	}
    90  	if c.APIToken == "" {
    91  		// Required configurations that will display errors if not set
    92  		errs = packer.MultiErrorAppend(
    93  			errs, errors.New("api_token for auth must be specified"))
    94  	}
    95  
    96  	if c.Region == "" {
    97  		errs = packer.MultiErrorAppend(
    98  			errs, errors.New("region is required"))
    99  	}
   100  
   101  	if c.Size == "" {
   102  		errs = packer.MultiErrorAppend(
   103  			errs, errors.New("size is required"))
   104  	}
   105  
   106  	if c.Image == "" {
   107  		errs = packer.MultiErrorAppend(
   108  			errs, errors.New("image is required"))
   109  	}
   110  
   111  	if c.UserData != "" && c.UserDataFile != "" {
   112  		errs = packer.MultiErrorAppend(
   113  			errs, errors.New("only one of user_data or user_data_file can be specified"))
   114  	} else if c.UserDataFile != "" {
   115  		if _, err := os.Stat(c.UserDataFile); err != nil {
   116  			errs = packer.MultiErrorAppend(
   117  				errs, errors.New(fmt.Sprintf("user_data_file not found: %s", c.UserDataFile)))
   118  		}
   119  	}
   120  
   121  	if errs != nil && len(errs.Errors) > 0 {
   122  		return nil, nil, errs
   123  	}
   124  
   125  	common.ScrubConfig(c, c.APIToken)
   126  	return c, nil, nil
   127  }