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
}
// storeImageMetadataInState writes image metadata into state store.
func storeImageMetadataInState(st *state.State, env environs.Environ, source string, priority int, existingMetadata []*imagemetadata.ImageMetadata) error {
if len(existingMetadata) == 0 {
return nil
}
cfg := env.Config()
metadataState := make([]cloudimagemetadata.Metadata, len(existingMetadata))
for i, one := range existingMetadata {
m := cloudimagemetadata.Metadata{
MetadataAttributes: cloudimagemetadata.MetadataAttributes{
Stream: one.Stream,
Region: one.RegionName,
Arch: one.Arch,
VirtType: one.VirtType,
RootStorageType: one.Storage,
Source: source,
Version: one.Version,
},
Priority: priority,
ImageId: one.Id,
}
s, err := seriesFromVersion(one.Version)
if err != nil {
return errors.Annotatef(err, "cannot determine series for version %v", one.Version)
}
m.Series = s
if m.Stream == "" {
m.Stream = cfg.ImageStream()
}
if m.Source == "" {
m.Source = "custom"
}
metadataState[i] = m
}
if err := st.CloudImageMetadataStorage.SaveMetadata(metadataState); err != nil {
return errors.Annotatef(err, "cannot cache image metadata")
}
return nil
}