// SetCharmURL sets the charm URL for each given unit. An error will
// be returned if a unit is dead, or the charm URL is not know.
func (u *UniterAPI) SetCharmURL(args params.EntitiesCharmURL) (params.ErrorResults, error) {
result := params.ErrorResults{
Results: make([]params.ErrorResult, len(args.Entities)),
}
canAccess, err := u.accessUnit()
if err != nil {
return params.ErrorResults{}, err
}
for i, entity := range args.Entities {
err := common.ErrPerm
if canAccess(entity.Tag) {
var unit *state.Unit
unit, err = u.getUnit(entity.Tag)
if err == nil {
var curl *charm.URL
curl, err = charm.ParseURL(entity.CharmURL)
if err == nil {
err = unit.SetCharmURL(curl)
}
}
}
result.Results[i].Error = common.ServerError(err)
}
return result, nil
}