How to use

accumulate

method

in

com.yahoo.bard.webservice.logging.RequestLog

  /**
   * Take a list of Jackson ArrayNodes and merge their contents, preserving order.
   *
   * @param responses  A list of pairs that encompass JSON nodes and response metadata
   *
   * @return A new pair holding the merged json and the aggregate request log context
   */
  private Pair<JsonNode, LoggingContext> mergeResponses(List<Pair<JsonNode, LoggingContext>> responses) {
    JsonNodeFactory factory = new JsonNodeFactory(true);
    ArrayNode result = factory.arrayNode();
    RequestLog.restore(logCtx);
    for (Pair<JsonNode, LoggingContext> entry : responses) {
      for (JsonNode jsonNode : entry.getKey()) {
        result.add(jsonNode);
      }
      RequestLog.accumulate(entry.getValue().getRequestLog());
    }
    RequestLog updatedCtx = RequestLog.dump();
    return new Pair<>(result, new LoggingContext(updatedCtx));
  }
}