github.com/Cloud-Foundations/Dominator@v0.3.4/cmd/imagetool/estimate.go (about)

     1  package main
     2  
     3  import (
     4  	"fmt"
     5  
     6  	"github.com/Cloud-Foundations/Dominator/lib/format"
     7  	"github.com/Cloud-Foundations/Dominator/lib/log"
     8  )
     9  
    10  func estimateImageUsageSubcommand(args []string, logger log.DebugLogger) error {
    11  	if err := estimateImageUsage(args[0]); err != nil {
    12  		return fmt.Errorf("error estimating image size: %s", err)
    13  	}
    14  	return nil
    15  }
    16  
    17  func estimateImageUsage(image string) error {
    18  	fs, err := getTypedFileSystem(image)
    19  	if err != nil {
    20  		return err
    21  	}
    22  	_, err = fmt.Println(format.FormatBytes(fs.EstimateUsage(0)))
    23  	return err
    24  }