github.com/amanya/packer@v0.12.1-0.20161117214323-902ac5ab2eb6/builder/amazon/common/ami_config.go (about)

     1  package common
     2  
     3  import (
     4  	"fmt"
     5  
     6  	"github.com/mitchellh/packer/template/interpolate"
     7  )
     8  
     9  // AMIConfig is for common configuration related to creating AMIs.
    10  type AMIConfig struct {
    11  	AMIName                 string            `mapstructure:"ami_name"`
    12  	AMIDescription          string            `mapstructure:"ami_description"`
    13  	AMIVirtType             string            `mapstructure:"ami_virtualization_type"`
    14  	AMIUsers                []string          `mapstructure:"ami_users"`
    15  	AMIGroups               []string          `mapstructure:"ami_groups"`
    16  	AMIProductCodes         []string          `mapstructure:"ami_product_codes"`
    17  	AMIRegions              []string          `mapstructure:"ami_regions"`
    18  	AMISkipRegionValidation bool              `mapstructure:"skip_region_validation"`
    19  	AMITags                 map[string]string `mapstructure:"tags"`
    20  	AMIEnhancedNetworking   bool              `mapstructure:"enhanced_networking"`
    21  	AMIForceDeregister      bool              `mapstructure:"force_deregister"`
    22  	AMIEncryptBootVolume    bool              `mapstructure:"encrypt_boot"`
    23  }
    24  
    25  func (c *AMIConfig) Prepare(ctx *interpolate.Context) []error {
    26  	var errs []error
    27  	if c.AMIName == "" {
    28  		errs = append(errs, fmt.Errorf("ami_name must be specified"))
    29  	}
    30  
    31  	if len(c.AMIRegions) > 0 {
    32  		regionSet := make(map[string]struct{})
    33  		regions := make([]string, 0, len(c.AMIRegions))
    34  
    35  		for _, region := range c.AMIRegions {
    36  			// If we already saw the region, then don't look again
    37  			if _, ok := regionSet[region]; ok {
    38  				continue
    39  			}
    40  
    41  			// Mark that we saw the region
    42  			regionSet[region] = struct{}{}
    43  
    44  			if !c.AMISkipRegionValidation {
    45  				// Verify the region is real
    46  				if valid := ValidateRegion(region); valid == false {
    47  					errs = append(errs, fmt.Errorf("Unknown region: %s", region))
    48  					continue
    49  				}
    50  			}
    51  
    52  			regions = append(regions, region)
    53  		}
    54  
    55  		c.AMIRegions = regions
    56  	}
    57  
    58  	if len(c.AMIUsers) > 0 && c.AMIEncryptBootVolume {
    59  		errs = append(errs, fmt.Errorf("Cannot share AMI with encrypted boot volume"))
    60  	}
    61  
    62  	if len(errs) > 0 {
    63  		return errs
    64  	}
    65  
    66  	return nil
    67  }