int Query::ProcessQuery()

in platform/consensus/ordering/pbft/query.cpp [51:122]
67 lines of code
18 McCabe index (conditional complexity)

int Query::ProcessQuery(std::unique_ptr<Context> context,
                        std::unique_ptr<Request> request) {
  if (config_.GetPublicKeyCertificateInfo()
          .public_key()
          .public_key_info()
          .type() == CertificateKeyInfo::CLIENT) {
    auto find_primary = [&]() {
      auto config_data = config_.GetConfigData();
      for (const auto& r : config_data.region()) {
        for (const auto& replica : r.replica_info()) {
          if (replica.id() == 1) {
            return replica;
          }
        }
      }
    };
    ReplicaInfo primary = find_primary();
    std::string ip = primary.ip();
    int port = primary.port();

    LOG(ERROR) << "redirect to primary:" << ip << " port:" << port;
    auto client = std::make_unique<NetChannel>(ip, port);
    if (client->SendRawMessage(*request) == 0) {
      QueryResponse resp;
      if (client->RecvRawMessage(&resp) == 0) {
        if (context != nullptr && context->client != nullptr) {
          LOG(ERROR) << "send response from primary:"
                     << resp.transactions_size();
          int ret = context->client->SendRawMessage(resp);
          if (ret) {
            LOG(ERROR) << "send resp fail ret:" << ret;
          }
        }
      }
    }
    return 0;
  }

  QueryRequest query;
  if (!query.ParseFromString(request->data())) {
    LOG(ERROR) << "parse data fail";
    return -2;
  }

  QueryResponse response;
  if (query.max_seq() == 0 && query.min_seq() == 0) {
    uint64_t mseq = message_manager_->GetNextSeq();
    response.set_max_seq(mseq - 1);
    LOG(ERROR) << "get max seq:" << mseq;
  } else {
    for (uint64_t i = query.min_seq(); i <= query.max_seq(); ++i) {
      Request* ret_request = message_manager_->GetRequest(i);
      if (ret_request == nullptr) {
        break;
      }
      Request* txn = response.add_transactions();
      txn->set_data(ret_request->data());
      txn->set_hash(ret_request->hash());
      txn->set_seq(ret_request->seq());
      txn->set_proxy_id(ret_request->proxy_id());
    }
  }

  if (context != nullptr && context->client != nullptr) {
    // LOG(ERROR) << "send response:" << response.DebugString();
    int ret = context->client->SendRawMessage(response);
    if (ret) {
      LOG(ERROR) << "send resp fail ret:" << ret;
    }
  }
  return 0;
}