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output_config.go
40 lines (33 loc) · 868 Bytes
/
output_config.go
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package common
import (
"fmt"
"github.com/mitchellh/packer/common"
"github.com/mitchellh/packer/packer"
"os"
)
type OutputConfig struct {
OutputDir string `mapstructure:"output_directory"`
}
func (c *OutputConfig) Prepare(t *packer.ConfigTemplate, pc *common.PackerConfig) []error {
if c.OutputDir == "" {
c.OutputDir = fmt.Sprintf("output-%s", pc.PackerBuildName)
}
templates := map[string]*string{
"output_directory": &c.OutputDir,
}
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))
}
}
if !pc.PackerForce {
if _, err := os.Stat(c.OutputDir); err == nil {
errs = append(errs, fmt.Errorf(
"Output directory '%s' already exists. It must not exist.", c.OutputDir))
}
}
return errs
}