Function extract_res

tools/cpp_examples/demo-client/src/ximage_press.cpp:103–135

}

void extract_res(const Request& req, const Response& res) {
  uint32_t sample_size = res.predictions_size();
  std::string err_string;
  for (uint32_t si = 0; si < sample_size; ++si) {
    DensePrediction json_msg;
    std::string json = res.predictions(si).response_json();
    butil::IOBuf buf;
    buf.clear();
    buf.append(json);
    butil::IOBufAsZeroCopyInputStream wrapper(buf);
    if (!JsonToProtoMessage(&wrapper, &json_msg, &err_string)) {
      LOG(ERROR) << "Failed parse json from str:" << json;
      return;
    }

    uint32_t csize = json_msg.categories_size();
    if (csize <= 0) {
      LOG(ERROR) << "sample-" << si << "has no"
                 << "categories props";
      continue;
    }
    float max_prop = json_msg.categories(0);
    uint32_t max_idx = 0;
    for (uint32_t ci = 1; ci < csize; ++ci) {
      if (json_msg.categories(ci) > max_prop) {
        max_prop = json_msg.categories(ci);
        max_idx = ci;
      }
    }

    LOG(INFO) << "instance " << si << "has class " << max_idx;
  }  // end for
}

void thread_worker(PredictorApi* api, int thread_id) {
  Request req;