forked from named-data/ndn-cxx
/
nfd-controller.cpp
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/
nfd-controller.cpp
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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
* Copyright (c) 2013-2014 Regents of the University of California.
*
* This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
*
* ndn-cxx library is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later version.
*
* ndn-cxx library 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 Lesser General Public License for more details.
*
* You should have received copies of the GNU General Public License and GNU Lesser
* General Public License along with ndn-cxx, e.g., in COPYING.md file. If not, see
* <http://www.gnu.org/licenses/>.
*
* See AUTHORS.md for complete list of ndn-cxx authors and contributors.
*/
#include "nfd-controller.hpp"
#include "nfd-control-response.hpp"
namespace ndn {
namespace nfd {
const uint32_t Controller::ERROR_TIMEOUT = 10060;
const uint32_t Controller::ERROR_SERVER = 500;
const uint32_t Controller::ERROR_LBOUND = 400;
Controller::Controller(Face& face, KeyChain& keyChain)
: m_face(face)
, m_keyChain(keyChain)
{
}
void
Controller::startCommand(const shared_ptr<ControlCommand>& command,
const ControlParameters& parameters,
const CommandSucceedCallback& onSuccess,
const CommandFailCallback& onFailure,
const CommandOptions& options)
{
Name requestName = command->getRequestName(options.getPrefix(), parameters);
Interest interest(requestName);
interest.setInterestLifetime(options.getTimeout());
m_keyChain.sign(interest, options.getSigningInfo());
m_face.expressInterest(interest,
bind(&Controller::processCommandResponse, this, _2,
command, onSuccess, onFailure),
bind(onFailure, ERROR_TIMEOUT, "request timed out"));
}
void
Controller::processCommandResponse(const Data& data,
const shared_ptr<ControlCommand>& command,
const CommandSucceedCallback& onSuccess,
const CommandFailCallback& onFailure)
{
/// \todo verify Data signature
ControlResponse response;
try {
response.wireDecode(data.getContent().blockFromValue());
}
catch (tlv::Error& e) {
if (static_cast<bool>(onFailure))
onFailure(ERROR_SERVER, e.what());
return;
}
uint32_t code = response.getCode();
if (code >= ERROR_LBOUND) {
if (static_cast<bool>(onFailure))
onFailure(code, response.getText());
return;
}
ControlParameters parameters;
try {
parameters.wireDecode(response.getBody());
}
catch (tlv::Error& e) {
if (static_cast<bool>(onFailure))
onFailure(ERROR_SERVER, e.what());
return;
}
try {
command->validateResponse(parameters);
}
catch (ControlCommand::ArgumentError& e) {
if (static_cast<bool>(onFailure))
onFailure(ERROR_SERVER, e.what());
return;
}
if (static_cast<bool>(onSuccess))
onSuccess(parameters);
}
} // namespace nfd
} // namespace ndn