packer-cn/fix/fixer_createtime.go

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package fix
import (
"github.com/mitchellh/mapstructure"
"regexp"
)
// FixerCreateTime is a Fixer that replaces the ".CreateTime" template
// calls with "{{timestamp}"
type FixerCreateTime struct{}
func (FixerCreateTime) Fix(input map[string]interface{}) (map[string]interface{}, error) {
// Our template type we'll use for this fixer only
type template struct {
Builders []map[string]interface{}
}
// Decode the input into our structure, if we can
var tpl template
if err := mapstructure.Decode(input, &tpl); err != nil {
return nil, err
}
badKeys := []string{
"ami_name",
"bundle_prefix",
"snapshot_name",
}
re := regexp.MustCompile(`{{\s*\.CreateTime\s*}}`)
// Go through each builder and replace CreateTime if we can
for _, builder := range tpl.Builders {
for _, key := range badKeys {
raw, ok := builder[key]
if !ok {
continue
}
v, ok := raw.(string)
if !ok {
continue
}
builder[key] = re.ReplaceAllString(v, "{{timestamp}}")
}
}
input["builders"] = tpl.Builders
return input, nil
}
func (FixerCreateTime) Synopsis() string {
return `Replaces ".CreateTime" in builder configs with "{{timestamp}}"`
}