func (api *API) parseMetadataFromParams(p params.CloudImageMetadata, env environs.Environ) (cloudimagemetadata.Metadata, error) {
result := cloudimagemetadata.Metadata{
cloudimagemetadata.MetadataAttributes{
Stream: p.Stream,
Region: p.Region,
Version: p.Version,
Series: p.Series,
Arch: p.Arch,
VirtType: p.VirtType,
RootStorageType: p.RootStorageType,
RootStorageSize: p.RootStorageSize,
Source: p.Source,
},
p.Priority,
p.ImageId,
}
// Fill in any required default values.
if p.Stream == "" {
result.Stream = env.Config().ImageStream()
}
if p.Source == "" {
result.Source = "custom"
}
if result.Arch == "" {
result.Arch = "amd64"
}
if result.Series == "" {
result.Series = config.PreferredSeries(env.Config())
}
if result.Region == "" {
// If the env supports regions, use the env default.
if r, ok := env.(simplestreams.HasRegion); ok {
spec, err := r.Region()
if err != nil {
return cloudimagemetadata.Metadata{}, errors.Annotatef(err, "getting cloud region")
}
result.Region = spec.Region
}
}
return result, nil
}
