@Override
    public ShenyuContext build(final ServerWebExchange exchange) {
        Pair<String, MetaData> buildData = buildData(exchange);
        return decoratorMap.get(buildData.getLeft()).decorator(buildDefaultContext(exchange.getRequest()), buildData.getRight());
    }
Instantiates a new Default shenyu context builder.

@param decoratorMap the decorator map
shenyu-plugin/shenyu-plugin-global/src/main/java/org/apache/shenyu/plugin/global/DefaultShenyuContextBuilder.java