packer-cn/builder/amazon/common/ami_config.go

120 lines
2.8 KiB
Go

package common
import (
"fmt"
"github.com/mitchellh/goamz/aws"
"github.com/mitchellh/packer/packer"
)
// AMIConfig is for common configuration related to creating AMIs.
type AMIConfig struct {
AMIName string `mapstructure:"ami_name"`
AMIDescription string `mapstructure:"ami_description"`
AMIVirtType string `mapstructure:"ami_virtualization_type"`
AMIUsers []string `mapstructure:"ami_users"`
AMIGroups []string `mapstructure:"ami_groups"`
AMIProductCodes []string `mapstructure:"ami_product_codes"`
AMIRegions []string `mapstructure:"ami_regions"`
AMITags map[string]string `mapstructure:"tags"`
}
func (c *AMIConfig) Prepare(t *packer.ConfigTemplate) []error {
if t == nil {
var err error
t, err = packer.NewConfigTemplate()
if err != nil {
return []error{err}
}
}
templates := map[string]*string{
"ami_name": &c.AMIName,
"ami_description": &c.AMIDescription,
"ami_virtualization_type": &c.AMIVirtType,
}
errs := make([]error, 0)
for n, ptr := range templates {
var err error
*ptr, err = t.Process(*ptr, nil)
if err != nil {
errs = append(
errs, fmt.Errorf("Error processing %s: %s", n, err))
}
}
sliceTemplates := map[string][]string{
"ami_users": c.AMIUsers,
"ami_groups": c.AMIGroups,
"ami_product_codes": c.AMIProductCodes,
"ami_regions": c.AMIRegions,
}
for n, slice := range sliceTemplates {
for i, elem := range slice {
var err error
slice[i], err = t.Process(elem, nil)
if err != nil {
errs = append(
errs, fmt.Errorf("Error processing %s[%d]: %s", n, i, err))
}
}
}
if c.AMIName == "" {
errs = append(errs, fmt.Errorf("ami_name must be specified"))
}
if len(c.AMIRegions) > 0 {
regionSet := make(map[string]struct{})
regions := make([]string, 0, len(c.AMIRegions))
for _, region := range c.AMIRegions {
// If we already saw the region, then don't look again
if _, ok := regionSet[region]; ok {
continue
}
// Mark that we saw the region
regionSet[region] = struct{}{}
// Verify the region is real
if _, ok := aws.Regions[region]; !ok {
errs = append(errs, fmt.Errorf("Unknown region: %s", region))
continue
}
regions = append(regions, region)
}
c.AMIRegions = regions
}
newTags := make(map[string]string)
for k, v := range c.AMITags {
k, err := t.Process(k, nil)
if err != nil {
errs = append(errs,
fmt.Errorf("Error processing tag key %s: %s", k, err))
continue
}
v, err := t.Process(v, nil)
if err != nil {
errs = append(errs,
fmt.Errorf("Error processing tag value '%s': %s", v, err))
continue
}
newTags[k] = v
}
c.AMITags = newTags
if len(errs) > 0 {
return errs
}
return nil
}