// storeImageMetadataFromFiles puts image metadata found in sources into state.
func storeImageMetadataFromFiles(st *state.State, env environs.Environ, source simplestreams.DataSource) error {
// Read the image metadata, as we'll want to upload it to the environment.
imageConstraint := imagemetadata.NewImageConstraint(simplestreams.LookupParams{})
if inst, ok := env.(simplestreams.HasRegion); ok {
// If we can determine current region,
// we want only metadata specific to this region.
cloud, err := inst.Region()
if err != nil {
return err
}
imageConstraint.CloudSpec = cloud
}
existingMetadata, info, err := imagemetadata.Fetch([]simplestreams.DataSource{source}, imageConstraint)
if err != nil && !errors.IsNotFound(err) {
return errors.Annotate(err, "cannot read image metadata")
}
return storeImageMetadataInState(st, info.Source, source.Priority(), existingMetadata)
}
