src/query.hpp

/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
 * Copyright (c) 2014, Regents of the University of California.
 *
 * This file is part of NDNS (Named Data Networking Domain Name Service).
 * See AUTHORS.md for complete list of NDNS authors and contributors.
 *
 * NDNS 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.
 *
 * NDNS 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
 * NDNS, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef NDNS_QUERY_HPP
#define NDNS_QUERY_HPP

#include "rr.hpp"

#include <ndn-cxx/name.hpp>

namespace ndn {
namespace ndns {

class Query
{
public:

  enum QueryType {
    QUERY_DNS,
    QUERY_DNS_R
  };

  static std::string
  toString(const QueryType& qType)
  {
    std::string label;
    switch (qType)
      {
      case QUERY_DNS:
        label = "DNS";
        break;
      case QUERY_DNS_R:
        label = "DNS-R";
        break;
      default:
        label = "Default";
        break;
      }
    return label;

  }

  static const QueryType
  toQueryType(const std::string& str)
  {
    QueryType atype;
    if (str == "DNS") {
      atype = QUERY_DNS;
    }
    else if (str == "DNS-R") {
      atype = QUERY_DNS_R;
    }
    else {
      atype = QUERY_DNS;
    }
    return atype;
  }

  Query();

  virtual ~Query();

  const Name& getAuthorityZone() const {
    return m_authorityZone;
  }

  void setAuthorityZone(const Name& authorityZone) {
    m_authorityZone = authorityZone;
  }

  time::milliseconds getInterestLifetime() const {
    return m_interestLifetime;
  }

  void setInterestLifetime(time::milliseconds interestLifetime) {
    m_interestLifetime = interestLifetime;
  }

  enum QueryType getQueryType() const {
    return m_queryType;
  }

  void setQueryType(enum QueryType queryType) {
    m_queryType = queryType;
  }

  const Name& getRrLabel() const {
    return m_rrLabel;
  }

  void setRrLabel(const Name& rrLabel) {
    m_rrLabel = rrLabel;
  }

  const RR::RRType& getRrType() const {
    return m_rrType;
  }

  void setRrType(const RR::RRType& rrType) {
    m_rrType = rrType;
  }


private:
  template<bool T>
  size_t
  wireEncode(EncodingImpl<T> & block) const;

public:
  Interest
  toInterest() const;

  bool
  fromInterest(const Name &name, const Interest& interest);

  bool
  fromInterest(const Interest& interest);


public:
  Name m_authorityZone;
  enum QueryType m_queryType;
  time::milliseconds m_interestLifetime;
  Name m_rrLabel;
  enum RR::RRType m_rrType;

  mutable Block m_wire;
};


inline std::ostream&
operator<<(std::ostream& os, const Query& query)
{
  os<<"Query: authorityZone="<<query.getAuthorityZone().toUri()
    <<" queryType="<<Query::toString(query.getQueryType())
    <<" rrLabel="<<query.getRrLabel().toUri()
    <<" rrType="<<RR::toString(query.getRrType());
  return os;
}


} // namespace ndns
} // namespace ndn

#endif // NDNS_QUERY_HPP