| 26 | |
| 27 | impl Serve { |
| 28 | pub fn select_variation(&self, eval_param: &EvalParams) -> Result<Variation, FPError> { |
| 29 | let variations = eval_param.variations; |
| 30 | let index = match self { |
| 31 | Serve::Select(i) => *i, |
| 32 | Serve::Split(distribution) => distribution.find_index(eval_param)?, |
| 33 | }; |
| 34 | |
| 35 | match variations.get(index) { |
| 36 | None if eval_param.is_detail => Err(FPError::EvalDetailError(format!( |
| 37 | "index {} overflow, variations count is {}", |
| 38 | index, |
| 39 | variations.len() |
| 40 | ))), |
| 41 | None => Err(FPError::EvalError), |
| 42 | Some(v) => Ok(Variation { |
| 43 | value: v.clone(), |
| 44 | index, |
| 45 | }), |
| 46 | } |
| 47 | } |
| 48 | } |
| 49 | |
| 50 | #[derive(Serialize, Deserialize, Debug, PartialEq, Eq, Clone)] |