Program Listing for File influxdb.hpp

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#ifndef DIAGNOSTIC_REMOTE_LOGGING__INFLUXDB_HPP_
#define DIAGNOSTIC_REMOTE_LOGGING__INFLUXDB_HPP_

#if defined(_WIN32)
#define NOMINMAX
#endif

#include <curl/curl.h>

#include <string>

#include "diagnostic_msgs/msg/diagnostic_array.hpp"
#include "diagnostic_remote_logging/influx_line_protocol.hpp"
#include "rclcpp/rclcpp.hpp"

class InfluxDB : public rclcpp::Node
{
public:
  explicit InfluxDB(const rclcpp::NodeOptions & opt);
  ~InfluxDB();

private:
  rclcpp::Subscription<diagnostic_msgs::msg::DiagnosticArray>::SharedPtr diag_sub_;
  rclcpp::Subscription<diagnostic_msgs::msg::DiagnosticStatus>::SharedPtr top_level_sub_;

  std::string post_url_, influx_token_;
  CURL * curl_;

  std::string output_string_;

  rclcpp::TimerBase::SharedPtr diagnostics_send_timer_;

  void setupConnection(const std::string & telegraf_url);

  void diagnosticsCallback(const diagnostic_msgs::msg::DiagnosticArray::SharedPtr msg);
  void topLevelCallback(const diagnostic_msgs::msg::DiagnosticStatus::SharedPtr msg);
  void sendTimerCallback();

  bool sendToInfluxDB(const std::string & data);
};

#endif  // DIAGNOSTIC_REMOTE_LOGGING__INFLUXDB_HPP_