face-helpers.hpp

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2014-2022,  Regents of the University of California,
 *                           Arizona Board of Regents,
 *                           Colorado State University,
 *                           University Pierre & Marie Curie, Sorbonne University,
 *                           Washington University in St. Louis,
 *                           Beijing Institute of Technology,
 *                           The University of Memphis.
 *
 * This file is part of NFD (Named Data Networking Forwarding Daemon).
 * See AUTHORS.md for complete list of NFD authors and contributors.
 *
 * NFD is free software: you can redistribute it and/or modify it under the terms
 * of the GNU General Public License as published by the Free Software Foundation,
 * either version 3 of the License, or (at your option) any later version.
 *
 * NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE.  See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef NFD_TOOLS_NFDC_FACE_HELPERS_HPP
#define NFD_TOOLS_NFDC_FACE_HELPERS_HPP
 
#include "execute-command.hpp"
 
namespace nfd::tools::nfdc {
 
using ndn::nfd::FaceQueryFilter;
using ndn::nfd::FaceStatus;
 
class FindFace : noncopyable
{
public:
  enum class Code {
    OK = 0, 
    ERROR = 1, 
    NOT_FOUND = 3, 
    CANONIZE_ERROR = 4, 
    AMBIGUOUS = 5, 
    NOT_STARTED = -1, 
    IN_PROGRESS = -2, 
  };
 
  enum class DisambiguationStyle
  {
    LOCAL_URI = 1 
  };
 
  explicit
  FindFace(ExecuteContext& ctx);
 
  Code
  execute(const FaceUri& faceUri, bool allowMulti = false);
 
  Code
  execute(uint64_t faceId);
 
  Code
  execute(const std::any& faceIdOrUri, bool allowMulti = false);
 
  Code
  execute(const FaceQueryFilter& filter, bool allowMulti = false);
 
  const std::vector<FaceStatus>&
  getResults() const
  {
    return m_results;
  }
 
  std::set<uint64_t>
  getFaceIds() const;
 
  const FaceStatus&
  getFaceStatus() const;
 
  uint64_t
  getFaceId() const
  {
    return this->getFaceStatus().getFaceId();
  }
 
  const std::string&
  getErrorReason() const
  {
    return m_errorReason;
  }
 
  void
  printDisambiguation(std::ostream& os, DisambiguationStyle style) const;
 
private:
  std::optional<FaceUri>
  canonize(const std::string& fieldName, const FaceUri& uri);
 
  void
  query();
 
private:
  ExecuteContext& m_ctx;
  FaceQueryFilter m_filter;
  Code m_res = Code::NOT_STARTED;
  std::vector<FaceStatus> m_results;
  std::string m_errorReason;
};
 
std::pair<std::optional<FaceUri>, std::string>
canonize(ExecuteContext& ctx, const FaceUri& uri);
 
std::pair<FindFace::Code, std::string>
canonizeErrorHelper(const FaceUri& uri,
                    const std::string& error,
                    const std::string& field = "");
 
} // namespace nfd::tools::nfdc
 
#endif // NFD_TOOLS_NFDC_FACE_HELPERS_HPP