## 模塊說明 | | 說明 | | --- | --- | | | | ## repeater-aide 1. 比較器的定義是在repeater-aide中； 2. 結果的比對執行是在console的ReplayServiceImpl： ```java public RepeaterResult<String> saveRepeat(String body) { // 這里省略了一大段 Comparable comparable = ComparableFactory.instance().createDefault(); // simple compare CompareResult result = comparable.compare(actual, expect); replay.setSuccess(!result.hasDifference()); try { replay.setDiffResult(JacksonUtil.serialize(result.getDifferences() .stream() .map(differenceConvert::convert) .collect(Collectors.toList()), false)); } catch (SerializeException e) { log.error("error occurred serialize diff result", e); return RepeaterResult.builder().message("operate failed").build(); } Replay calllback = replayDao.saveAndFlush(replay); return RepeaterResult.builder().success(true).message("operate success").data("-/-").build(); } ``` 比較器執行主要代碼：com.alibaba.jvm.sandbox.repeater.aide.compare.IntegratedComparator，每個比較器都會比較一遍結果。 ```java @Override public CompareResult compare(Object left, Object right) { // try clear last compare result tryClear(); // dispatch compare task List<Path> paths = new ArrayList<Path>(0); try { dispatch(left, right, paths); } catch (Exception e) { // LogUtil.error("error occurred when dispatch compare task", e); addDifference(left, right, Difference.Type.COMPARE_ERR, paths); } return new CompareResult(left, right, differences); } public void dispatch(Object left, Object right, List<Path> paths) { // cycle reference detect try { String nodeName = pathLocator.encode(paths); leftDetector.detect(left, nodeName); rightDetector.detect(right, nodeName); } catch (CycleReferenceException e) { // LogUtil.error("error occurred when dispatch compare task", e); return; } // do compare，每個比較器都會比較一遍 for (Comparator comparator : comparators) { if (comparator.accept(left, right)) { comparator.compare(left, right, paths, this); break; } } } ``` ### 自定義結果比較器 為什么要自定義結果比較器？ 1. 重構等行為可能會造成包名的不一致、方法簽名不一致； 2. 字段增加也會對對比較結果產生影響； 按理來講，結果比較更加偏向于邏輯校驗。比較結果應該忽略上述問題的影響。