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Volkszaehler.hpp
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/
Volkszaehler.hpp
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/***********************************************************************/
/** @file Volkszaehler.hpp
* Header file for volkszaehler.org API calls
*
* @author Kai Krueger
* @date 2012-03-15
* @email kai.krueger@itwm.fraunhofer.de
* @copyright Copyright (c) 2011, The volkszaehler.org project
* @package vzlogger
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
*
* (C) Fraunhofer ITWM
**/
/*---------------------------------------------------------------------*/
/*
* This file is part of volkzaehler.org
*
* volkzaehler.org 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
* any later version.
*
* volkzaehler.org 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 volkszaehler.org. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _Volkszaehler_hpp_
#define _Volkszaehler_hpp_
#include <stdint.h>
#include <curl/curl.h>
#include <json/json.h>
#include <ApiIF.hpp>
#include <Options.hpp>
#include "Buffer.hpp"
namespace vz {
namespace api {
typedef struct {
char *data;
size_t size;
} CURLresponse;
typedef struct {
CURL *curl;
struct curl_slist *headers;
} api_handle_t;
class Volkszaehler : public ApiIF {
public:
typedef vz::shared_ptr<ApiIF> Ptr;
Volkszaehler(Channel::Ptr ch, std::list<Option> options);
~Volkszaehler();
void send();
void register_device();
const std::string middleware() const { return _middleware; }
private:
std::string _middleware;
CURL *curl() { return _api.curl; }
/**
* Create JSON object of tuples
*
* @param buf the buffer our readings are stored in (required for mutex)
* @param first the first tuple of our linked list which should be encoded
* @param last the last tuple of our linked list which should be encoded
* @return the json_object (has to be free'd)
*/
json_object * api_json_tuples(Buffer::Ptr buf);
/**
* Parses JSON encoded exception and stores describtion in err
*/
friend class Volkszaehler_Test;
void api_parse_exception(CURLresponse response, char *err, size_t n);
private:
api_handle_t _api;
// Volatil
std::list<Reading> _values;
uint64_t _last_timestamp; /**< remember last timestamp */
}; //class Volkszaehler
/**
* Reformat CURLs debugging output
*/
int curl_custom_debug_callback(CURL *curl, curl_infotype type, char *data, size_t size, void *custom);
size_t curl_custom_write_callback(void *ptr, size_t size, size_t nmemb, void *data);
} // namespace api
} // namespace vz
#endif /* _Volkszaehler_hpp_ */