18835572909 commented on issue #37081:
URL:
https://github.com/apache/shardingsphere/issues/37081#issuecomment-3530593345
org.apache.shardingsphere.shadow.route.engine.ShadowRouteEngine#decorateRouteContext
default void decorateRouteContext(final RouteContext routeContext,
final ShadowRule shadowRule, final Map<String, String>
shadowDataSourceMappings) {
Collection<RouteUnit> toBeRemovedRouteUnit = new LinkedList<>();
Collection<RouteUnit> toBeAddedRouteUnit = new LinkedList<>();
for (RouteUnit each : routeContext.getRouteUnits()) {
String logicName = each.getDataSourceMapper().getLogicName();
String actualName = each.getDataSourceMapper().getActualName();
Optional<String> sourceDataSourceName =
shadowRule.getSourceDataSourceName(actualName);
if (sourceDataSourceName.isPresent()) {
String shadowDataSourceName =
shadowDataSourceMappings.get(sourceDataSourceName.get());
toBeRemovedRouteUnit.add(each);
toBeAddedRouteUnit.add(null == shadowDataSourceName
? new RouteUnit(new RouteMapper(logicName,
sourceDataSourceName.get()), each.getTableMappers())
: new RouteUnit(new RouteMapper(logicName,
shadowDataSourceName), each.getTableMappers()));
}
}
routeContext.getRouteUnits().removeAll(toBeRemovedRouteUnit);
routeContext.getRouteUnits().addAll(toBeAddedRouteUnit);
}
This is the source code:
shadowRule.getSourceDataSourceName(actualName);//
I don't quite understand this part of him. Is the variable
'practiceName' the result of shardingRule？
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