// Create a new blob object from an existing size
func (im *Image) MakeSize(sizing *imgry.Sizing) (*Image, error) {
defer metrics.MeasureSince([]string{"fn.image.MakeSize"}, time.Now())
if err := im.ValidateKey(); err != nil {
return nil, err
}
im2 := &Image{
Key: im.Key,
Data: im.Data,
SrcUrl: im.SrcUrl,
Sizing: sizing,
SizingQuery: sizing.ToQuery().Encode(),
}
// Clone the originating image
var err error
if err = im2.LoadImage(); err != nil {
return nil, err
}
// Resize the new image object
if err = im2.SizeIt(sizing); err != nil {
return nil, err
}
return im2, nil
}
func (b *Bucket) DbIndexKey(imageKey string, optSizing ...*imgry.Sizing) string {
var sizing *imgry.Sizing
if len(optSizing) > 0 { // sizing is optional
sizing = optSizing[0]
}
key := fmt.Sprintf("%s/%s", b.ID, imageKey)
if sizing != nil {
key = fmt.Sprintf("%s:q/%s", key, sha1Hash(sizing.ToQuery().Encode()))
}
return key
}